Tender Document (Part 1)

Tender Document (Part 1)
CHENNAI METRO RAIL LIMITED
(A JOINT VENTURE OF GOVERNMENT OF INDIA AND GOVERNMENT OF
TAMILNADU)
PROPOSED CONSTRUCTION OF CAR SHELTER, AT CMRL KOYAMBEDU
DEPOT , CHENNAI 600 107
Part – 1C - Technical Tender Qualifying criteria
DATE FOR SUBMISSION OF TENDER ON 07- 04- 2015 at 15.00 Hours
DATE FOR OPENING OF TENDER ON 07-04-2015 at 15.30 Hours
TO BE SUBMITTED TO:
The Chief General Manager(EC)
Chennai Metro Rail Limited
Admn. Building, CMRL Depot
Poonnamallee High Road ,
Koyambedu, Chennai - 600107
TENDER SUBMITTED BY:
M/s._________________________
Address_____________________
____________________________
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
CHENNAI METRO RAIL LIMITED
(A JOINT VENTURE OF GOVERNMENT OF INDIA AND GOVERNMENT OF TAMILNADU)
TECHNO COMMERCIAL TENDER
(TWO COVER SYSTEM)
TECHNICAL TENDER - QUALIFICATION CRITERIA
Part I – C - INFORMATION AND INSTRUCTIONS TO TENDERER
PROPOSED CONSTRUCTION OF CAR SHELTER, AT CMRL, DEPOT,
KOYAMBEDU , CHENNAI 600 107
CONTENTS
I.
Notice inviting Tenders
II.
Information and Instructions to TENDERERS.
1. General
2. Brief Description of Project
3. Important Conditions of Contracts
4. Eligible TENDERER for applying.
5. Qualifying Criteria for Piling contractor
6. Site Visit
7. Submission of TENDER documents
8. Particular Attention
9. Final Decision Making Authority
II.
Qualification Information
1.
Appendix A :
Letter of Transmittal
2.
Qualification requirements
3.
Format - A :
4.
Format - B :
5.
Format - C :
6.
Format - D :
Details of Completed works
7.
Format - E :
Details of Ongoing works
8.
Format - F :
Plant, machinery & Equipment
9.
Format - G :
Details of Termination of contract in the past, if any
Structure and Organization of TENDERER
Key Personnel to be deployed
Financial Information
10. Format – H :
Status of Current litigations, if any
11. Annexure A :
Certificates
1
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
CHENNAI METRO RAIL LIMITED
NOTICE INVITING TENDER FOR
PROPOSED CONSTRUCTION OF CAR SHELTER, AT CMRL, DEPOT,
KOYAMBEDU, CHENNAI 600 107
TWO COVER SYSTEM
Tender Notice No: CMRL/CON/DEPOT/CS01/2015
1. Government of India proposes to construct Car Parking Shelter for CMRL, Depot, Koyambedu ,
Chennai, TAMILNADU. This involves parking of cars of about 100 nos On behalf of the President of
India, the Chief General Manager (EC ), CMRL, Depot, Koyambedu, Chennai 600 107 Tamil Nadu,
India invites tender for Proposed Construction of Car SHELTER for CMRL, Depot,Koyambedu Chennai
600 107under the two cover system from the Contractors who meet the following criteria:
The TENDERER to be eligible for Qualification, should fulfill the following qualification criteria :
a) The TENDERER should be a well established and reputed Engineering Contractor, registered
as a legal entity in India, and having experience of minimum Five years in the field of Civil
Engineering and its associated works.
b) Experience of having successfully completed similar works during the last 5 years ending on
31.03.2014.
Three Similar completed works costing not less than Rs.22 Lakhs each.
or
Two Similar completed works costing not less than Rs.33 Lakhs each.
or
One Similar completed works costing not less than Rs.44 Lakhs each.
The Experience certificate for having satisfatorily completed is to be obtained from the
engineers not below the rank of Executive Engineer / Director / Head of procurement
department / equivalent and the same should be in originals.
c) The TENDERER should have an average annual turnover of Rs.54.00 Lakhs in the field of
st
piling and associated works during the past five financial years, ending on 31 March, 2014.
d) The TENDERER should produce Banker‟s Solvency Certificate or Revenue Solvency
Certificate, of the value of Rs.22.00 Lakhs. Solvency certificate must have been obtained not
st
earlier than 31 December, 2014.
e) Should have access to financial resources, to sustain a firm cash flow, of INR 18.00 Lakhs
per month, exclusively available for this work. Letter of support from TENDERER‟s Bankers is
required in support of this to be enclosed in addition to the Bankers Solvency certificate for
INR 22.00 Lakhs.
f)
The successful TENDERER shall ensure that, no sub contractor will be engaged for this work
in whole or part, for which TENDERER should submit the affidavit duly signed.
g) Should have adequate material & equipment resources to complete the works within the
scheduled period, for which the TENDERER should assure, fill and submit the appropriate
format F in the prequalification document duly signed.
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Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
1. Salient features:
Name of work
PROPOSED CONSTRUCTION OF CAR SHELTER, AT
CMRL, DEPOT, KOYAMBEDU, CHENNAI,
, TAMIL NADU, INDIA
Period of Completion
THREE MONTHS (From the date of issuing LOA)
2. Tender documents can be purchased from the office of the Chief General Manager (EC), CMRL,
Depot, Koyambedu, Chennai Tamil Nadu, India
Rs.5,000/- (Rupees Five Thousand only) including tax by
Demand Draft drawn from any Nationalized or
Scheduled Banks in India payable at Chennai, in favour
of the Chennai Metro Rail Ltd, Chennai-107, Tamil Nadu,
for hard copy and Rs 4,000/- (Rupees Four Thousand
only) for downloading using web access.
(a)
Cost of Tender Document
(Including VAT) Non-refundable.
(b)
Period of
documents
(c)
Earnest Money Deposit (EMD)
(d)
Pre-tender Meeting
15.00 Hours on 17-03-2015 at the office of Chief General
Manager (EC), CMRL, Koyambedu, Chennai 600 107.
(e)
Issue of pre tender clarifications
On or before 15:00 Hours, 23-03-2015
(f)
Last date for submission of
tenders
15.00 Hours on 07.04.2015
(g)
Opening of Technical Tender
15.30 Hours on 07.04.2015
Issue
of
tender
06-03-2015 to 04-04-2015 (during office hours -10.00am
to 15.00 hours)
Rs.54,000/- (Rupees Fifty Four Thousand only) by
Demand Draft, drawn from any Nationalized or
Scheduled Bank in India payable at Chennai, in favour
of the Chennai Metro Rail Ltd, Chennai- 107 Tamil Nadu,
India (OR) by Bank Guarantee on any Nationalized or
Scheduled Bankers in India, valid upto 08-05-2015.
Only one set of document will be issued. Contractors have to take additional copies.
The tender document is available in the CMRL website viz. www.chennaimetrorail.gov.in
for view and reference only. The tenderer has to purchase the tender document from the Office
of CMRL, Depot, Koyambedu Chennai and payment to be made towards the tender document
in the form of demand draft drawn from any Nationalized or Scheduled Banks in India payable at
Chennai, in favour of the - Chennai Metro Rail Ltd, Chennai- 107, Tamil Nadu, India,
CMRL reserves the right to accept / reject any one / all the tenders without assigning any reason
thereof.
Evaluation of tender will be done by a committee constituted by CMRL or NIT approving authority.
Chief General Manager (EC),
Chennai Metro Rail Limited,,
Depot, Koyambedu, Chennai 600107
Tamil Nadu, India
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Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
INFORMATION AND INSTRUCTIONS TO TENDERERS
1.00
General:
1. Government of India proposes to construct Car Parking Shelter for CMRL, Depot, Koyambedu ,
Chennai, TAMILNADU. This involves parking of cars of about 100 nos On behalf of the President of
India, the Chief General Manager (EC ), CMRL, Depot, Koyambedu, Chennai 600 107 Tamil Nadu,
India invites tender for Proposed Construction of Car SHELTER for CMRL, Depot,Koyambedu Chennai
600 107under the two cover system from the Contractors who meet the following criteria:
1.02 Definitions:
i.
TENDER: shall mean the set of TENDER DOCUMENTS submitted by a TENDERER.
ii.
TENDER DOCUMENT: shall mean set of documents consisting of Techno Commercial
Tender with Drawings.
iii.
Employer: The Chief General Manager (EC), Chennai Metro Rail Limited, Ponnamalle
High Road, Koyambedu, Chennai 600 107 Tamil Nadu, India who will also be referred
as Employer / Owner
iv.
TENDERER: shall mean the firm, who has purchased the TENDER documents to submit for
Techno Commercial Tender to execute the said works.
v.
Works shall mean the construction of civil foundation, steel structure with galvalume roof for
car parking shelter of about 100 Nos.
vi.
Contract: shall mean the Contract entered into between the Employer and the successful
TENDERER on award of Contract for the Works.
vii.
Architects shall mean Consultants engaged by the Employer, M/S. C.R. Narayana Rao,
Architects and Engineers, Old No.5 / New No. 10, Karpagambal Nagar, Luz, Mylapore,
Chennai-600004, India.
viii.
Engineer engaged by the Employer, M/S. C.R. Narayana Rao, Architects and Engineers, Old
No.5 / New No.10, Karpagambal Nagar, Luz, Mylapore, Chennai-600004, India.
i.
1.03
Contractor shall mean the qualified engineering Contracting firm, whose tender for
Contract works has been accepted by the Employer and to whom a letter of award has
been issued and accepted / who enters into agreement / contract with the Employer and
executes the works after observing due formalities. The Contractor will co-operate and coordinate with Employers / Architects / Other independent specialist contracting Agencies, if
any appointed by the Employer, to execute certain special nature of works and undertake
responsibility to complete all the works concurrently, within the time frame of the Project
Completion Period and ensure sequential, unhindered and harmonious progress of work.
The Contractor shall include their executives, authorised representatives, administrators,
successors and permitted assignees and such contractors.
TENDERS are invited by the Employer from, reputed, well established and experienced Civil
& Structural works contractor well established and reputed, registered as a legal entity in
India for a minimum period of ten years Car parking shelter works or similar in nature in
India. The notice inviting tender is published in leading news papers and also available in
web site www.chennaimetrorail.gov.in and the tender documents will not be available for
e-submission.
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Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
1.04
TENDER DOCUMENT can be obtained from the office of the Chief General Manager, (EC),
Chennai Metro Rail Limited, Ponnammale high Road, Depot, Koyambedu Chennai, Tamil
Nadu, India from 07.03.2015 to 04-04-2015, upon payment of non-refundable amount of
INR.54,000 including tax, in the form of Demand Draft, obtained from any Nationalised /
Scheduled banks in India, payable at Chennai, drawn in favour of the Chennai Metro Rail
Ltd, Chennai - 107. Tender documents can also be downloaded from the above website, for
which the cost of tender document will have to be paid in the form of demand draft
drawn from any Nationalized or Scheduled Banks in India payable at Chennai, in favour of
Chennai Metro Rail Limited, Depot, Koyambedu, Chennai, Tamil Nadu, India (along with the
prequalification document). Without the submission of cost of tender document (in the form of
DD) along with the tender will not be considered for evaluation.
1.05
Letter of Transmittal and information required for Qualification shall be submitted as per
Appendix “A” attached.
1.06
TENDERS are not transferable and will be accepted, only from the parties, who have purchased
the documents from the office of CMRL.
1.07
All information called for, shall be furnished against the respective columns in the enclosed
form. If the space in the format is insufficient for furnishing full details, separate sheets may
be used duly stating the reference to the format and serial number therein. Separate sheets
shall be used for each format. If information is furnished in a separate document, reference to
the same should be given against respective column(s). If information is „Nil” it should also be
mentioned as “Nil” or “No such case”. If any particular query is not applicable to the
TENDERER it should be stated as “Not applicable”. However, the TENDERERS are
cautioned that not giving complete information called for in the Tender in the form required or
not giving it in clear terms or making any change in the prescribed forms may result in
disqualification of the TENDERER.
1.08
The tender should be submitted in English only. Supporting documents such as Annual
accounts, Balance sheets, Employer‟s Certifications, Testimonials etc., if attached in any
other language should be translated in English. The Embassy / Official Diplomatic Mission of
the TENDERER‟s country in India must certify that English documents are true and accurate
translation of original documents.
1.09
The Tender Document shall be submitted in duplicate in typewritten / handwritten form. The
TENDERER‟S signature and seal of the firm shall appear on each page of the Tender.
1.10
Overwriting shall be avoided. Mistakes shall be scored through and corrections incorporated
and attested by the authorised signatory. All pages of the TENDER document shall be
numbered, signed and submitted in a single packet along with a signed letter of transmittal.
1.11
References, Information and Certificates from the respective Employers certifying for
performance and suitability, technical know-how or capability of the TENDERER shall be
signed by the authorised signatory of Employer.
1.12
The TENDERER is advised to furnish any additional information, which they think is
necessary in regard to their capabilities. No further information will be entertained after
submission of Qualification TENDER document, unless it is called for by the Employer.
1.13
Tender Document details and enclosures shall be addressed and submitted in sealed
envelopes and addressed to Chief General Manager, (EC), Chennai Metro Rail Limited,
Depot, Koyambedu, Chennai - 6000107, Tamil Nadu, India as detailed in clause 8.01.
Tender submitted late will not be opened. All times and dates mentioned in this Tender Notice
and application are Indian Standard Time (IST) only. The same will be followed for
communication and other purposes.
1.14
Documents submitted in connection with the Tender, will be treated as CONFIDENTIAL and
will not be returned.
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Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
1.15
The cost incurred by TENDERERS in preparing their Tender, in collecting information, in
providing clarifications or attending discussions, conferences or in making presentations, site
visit etc. in connection with this TENDER will not be reimbursed by the Employer under any
circumstances
1.16
Any clarification given by the Employer on his own will be forwarded to all those who have
been given a copy of the TENDER documents.
1.17
The Employer reserves the right to reject any or all TENDERS or reduce the scope, without
assigning any reasons whatsoever and without incurring any liability to whomsoever.
1.18
Canvassing or influencing in any form will entail disqualification.
1.19
The Employer reserves the right to approach individuals, employers, companies and
corporations to verify TENDERER‟S competency and general reputation.
2.0
BRIEF DESCRIPTION OF PROJECT :
Proposed parking shelter for cars of about 100 nos at Depot, Koyambedu, Chennai
107 Tamil Nadu,
600
Time is the essence of project and the entire scope of work is to be completed within 3
(Three) months, with responsibility to co-operate and co-ordinate with Employer / Employer‟s
personnel if any to execute certain special nature of works and undertake responsibility to
complete all the works concurrently within the time frame of the Project Completion Period
and ensure sequential, unhindered and harmonious progress of work.
2.02
BRIEF DESCRIPTION OF THE WORK:
The Works for the present TENDER comprises of construction car parking shelter of about
100 nos at Depot, Koyambedu, Chennai 600 107 Tamil Nadu,
2.03.
The particulars of the proposed Works given herein must be considered only as advance
information and a general guide to assist TENDERERS.
PERIOD OF COMPLETION :
2.04
The period of completion of the work will be Three months. The work involves the dismantling
of flooring excavation, foundation works, structural steel shelter for Chennai Metro rail Ltd,
Depot, Koyambedu, Chennai 107 etc all as specified in the Bills of Quantities.
2.05
All construction documents, prepared by the Construction firm shall have to be reviewed and
approved by the Employer / Employer‟s personnel, before commencement of procurement
and construction.
All works shall have to be carried out, in compliance with Technical
Specification, as enclosed with the Tender Documents, relevant Indian standard (IS) Codes,
International Codes and local bye-laws.
2.06
Validity of tender : 30 days from the date of submission of tender.
3.0
IMPORTANT CONDITIONS OF CONTRACT:
3.01
The Contract shall be item rate contract with unit rates, to be quoted in Indian Rupees only.
3.02
Conditions of Contract, will be as per standard practice and duly modified to suit local
conditions incorporating Mobilization advance, performance bond, retention money, liquidated
damages, Compensation Events, default Arbitration clauses etc. The contractor shall be
responsible for procurement of all quality materials, required for due performance of the
contract.
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Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
3.03
Since the project is to be implemented strictly on the time schedule, the employer may extend
the deadline for submission of tenders by issuing an amendment in which case, all rights and
obligations of the Employer and Tenderer previously ensured in the original deadline, will then
be shifted to the new deadline. The Employer will lay high emphasis on the capacity of the
selected contractor to deploy high-tech and speedy construction techniques, high degree of
planning, good procurement and quality check procedures, quality assurance Plan,
Environment and Safety Plan to meet the appropriate standards, execution and co-ordination,
ability to prepare PERT network and adhering to it meticulously.
3.04
Therefore the TENDERERS are required to demonstrate with firm examples of deployment of
above techniques in their previously completed project. The commendable performance by
the TENDERER in their previous Projects will receive special consideration. (*)
3.05
Price Adjustment Clause :
Price Adjustment Clause is not applicable for this work.
EARNEST MONEY DEPOSIT :
The Earnest Money Deposit of INR 54,000/- (Rupees Fifty four only) must accompany the
Qualification Tender for this work.
3.05.1 The EMD may be produced in any one of the following forms
i.
Demand Draft issued by any one of the Nationalized or Scheduled Bank of India drawn in favour
of Chennai Metro Rail Ltd., Chennai – 107.
ii. Bank Guarantee from any Nationalised Bank or Scheduled Bank of India.
Note: (*) denotes requirement of enclosure(s) along with Tender.
3.05.2 Qualification schedule not accompanied by EMD will be rejected as Non-responsive tender.
3.05.3 If the TENDERER withdraws his tender after the acceptance of the tender (or) fails to pay the
requisite security deposit amount within the specified period of time the EMD remitted with the
Tender will be forfeited.
3.06
PERFORMANCE BOND :
3.06.1 The successful TENDERER shall furnish a Performance Bond in the shape of irrevocable Bank
guarantee for an amount equivalent to 5% of the total contract value within 7 days from the date
of receipt of Letter of Award. If the successful TENDERER fails to execute the contract (i.e.
signing the agreement) within 15 days, the EMD amount remitted will be forfeited.
3.06.2 The Performance Bond will be valid till the end of the Defects Liability Period
3.06.3 In addition to the aforesaid Performance Bond, CMRL shall deduct from the running account
bills, a sum of equivalent to 5% (Five Percent) of the total value of each bill as retention money.
3.06.4 Out of the total accumulated retention money of 5% (five Percent) up to the end of the
completion of project, 2.5% (two and a half percent) of the said amount will be released to the
contractor in the final bill.
3.06.5 The balance of 2.5% (Two and a half percent) of the total value of work, will be retained in the
final bill of the work, for a period of six months reckoned from the date of completion of the work,
or as soon after the expiration of such period of six months as all defects, shall have been made
good accordingly to the true intent and meaning hereof, whichever shall last happen, and , shall
be refunded to the contractor, after the defects liabilities attached to the contractor is over, after
deducting any amount due to the Department, subject to the following conditions.
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Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
a. The Employer‟s Representative (Engineer – in - Charge), concerned should certify that no
liability is due from the Contractor.
4.0
ELIGIBLE TENDERERS :
4.01
The firms applying for eligibility should have extensive experience and proven track record in
Piling and its associated works.
4.02
The Tender made by a partnership firm, shall be signed by all the partners of the firms above
their full typewritten / handwritten names and current addresses, or alternatively by a partner
holding Power of Attorney for the firm, in which case, a certified copy of the Power of Attorney
shall accompany the Tender. A certified copy of the deed, full names and current addresses
of all the partners of the firm shall also accompany the Tender. (*)
4.03
The Tender made by a firm shall be signed by Authorised signatory but appropriate evidence
should be enclosed for authorizing the signing person in the tender document. (*)
4.04
The financial Tenders of only those Tenderer, who fulfill the eligibility criteria mentioned in the
Notice Inviting Tender and mentioned in Clause No.5 below, will be opened.
4.05
Any change in the legal status of a TENDERER subsequent to submission of Tender will be
subject to approval of the Employer
4.06
TENDERERs under Joint Venture arrangements are not permitted.
Note: (*) denotes requirement of enclosure(s) along with Tender.
5.0
QUALIFYING CRITERIA FOR PILING CONTRACTOR:
5. 01 The TENDERER to be eligible for Qualification, should fulfill the following qualification criteria :
a) The TENDERER should be a well established and reputed Engineering Contractor, registered
as a legal entity in India, and having experience of minimum Five years in the field of Civil
Engineering and its associated works.
b) Experience of having successfully completed similar works during the last 5 years ending on
31.03.2014.
Three Similar completed works costing not less than Rs.22 Lakhs each.
or
Two Similar completed works costing not less than Rs.33 Lakhs each.
or
One Similar completed works costing not less than Rs.44 Lakhs each.
The Experience certificate for having satisfatorily completed is to be obtained from the
engineers not below the rank of Executive Engineer / Director / Head of procurement
department / equivalent and the same should be in originals.
c) The TENDERER should have an average annual turnover of Rs.54.00 Lakhs in the field of
st
piling and associated works during the past five financial years, ending on 31 March, 2014.
d) The TENDERER should produce Banker‟s Solvency Certificate or Revenue Solvency
Certificate, of the value of Rs.22.00 Lakhs. Solvency certificate must have been obtained not
st
earlier than 31 December, 2014.
e) Should have access to financial resources, to sustain a firm cash flow, of INR 18.00 Lakhs
per month, exclusively available for this work. Letter of support from TENDERER‟s Bankers is
required in support of this to be enclosed in addition to the Bankers Solvency certificate for
INR 22.00 Lakhs.
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Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
f)
The successful TENDERER shall ensure that, no sub contractor will be engaged for this work
in whole or part, for which TENDERER should submit the affidavit duly signed.
g) Should have adequate material & equipment resources to complete the works within the
scheduled period, for which the TENDERER should assure, fill and submit the appropriate
format F in the prequalification document duly signed.
5.02
The TENDERER should further furnish evidence for the following.
(i)
That they have the required minimum tools, plant and equipment
(ii)
That the TENDERER / Firm shall have a minimum Supervisory Staff of one
Project Manager and other Engineers with qualification and field experience.
Exclusively for carrying out this Project, other than the supporting staff for
executing the work without any complications.
6.0
SITE VISIT:
6.01
The TENDERER shall, prior to submission of the tender for the work at his own responsibility
and risk, visit and examine the site of work & its surroundings with prior intimation to the
Employer for proper assessment of the prospective assignment. The TENDERER should
refer to the Site Plan, and Location Map, enclosed with the list of drawings.
7.0
SUBMISSION OF TENDER DOCUMENTS :
Sealed Tenders should be addressed to the Chief General Manager(EC), Chennai Metro rail
Ltd, Depot, Koyambedu, Chennai 107 and superscripting, the name of the Tender on the top
left hand corner of the cover and the name of the TENDERER on the bottom left hand corner of
the cover and sent so as to reach him not later than 15-00 hours aon 07.04.2015.
The Tender shall be two cover system / Two part tender system, Part – I, the Technical
and Qualification Tender along with EMD and Part – II the Price Tender. Both the Parts,
each in separate sealed Covers -1 & 2 (i.e. Part I in cover -1 & Part II in cover -2), have to
be submitted together put in a common sealed cover.
Part – I (Technical and Qualification Tender), of the Tender document consists of Part - I (A),
I(B) & I(C), pertaining to Conditions of Contract (I-A), Technical Specification (I-B) and
Qualification criteria (I-C) and Part – II (Price Tender) of Tender document, pertaining to Bill of
Quantities shall be submitted in duplicate i.e. one original and one copy. All the other
enclosures that the TENDERERs wish to submit shall also be in duplicate. (Part 1-B Technical
Specification: Duplicate copy need not be submitted.)
All Tender Drawings duly signed and affixed with the seal of the TENDERER shall be returned
in a separate cover and need not be sealed, at the time of submission of the Tender.
A Tender which is not accompanied by EMD, in the approved form in a separate envelope
attached to the sealed cover will be rejected.
The duly sealed Tenders shall be submitted to the Employer after superscribing the name of
work, Tender Part No., and name of TENDERER, so as to reach him not later than the due date
and time specified above.
No indication of Tender value or any financial aspect of Tender shall be made in any manner in
any of the enclosures, covering letter etc. in Cover- 1 containing Part-1(A), (B) & (C) (Technical
and Qualification Tender). If so, such Tender will be rejected.
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Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
Documents submitted in connection with the Tender will not be returned.
In addition to the identification required above, the inner envelopes shall include the name and
addresses of the TENDERER to enable the Tender to be returned as unopened, in case it is
declared late.
If the outer envelope is not sealed and marked as above, the employer will assume no
responsibility for misplacement or premature opening of the tender and the tender will be
treated on the grounds of not substantially responsive.
To be eligible for Qualification, TENDERERS shall provide, evidence to the suitability of their
meeting the Criteria indicated in Clause – 5.0 above and furnish details giving their full biodata, organisation, technical experience, plant and equipments etc. to establish their capacity
and competence, and possession of adequate resources to carry out the contracts
effectively and for this, the TENDERS submitted shall include the following: (*)
a) Letter of transmittal; as in Appendix - A
b) Copies of original documents defining the legal status of the TENDERER, its structure
and organisation, place of registration and principal place of business of the TENDERER
in Format – A.
c) The qualification and experience of key personnel proposed for the administration and
execution of the contract, both on and off site in the format prescribed in Format-B.
d) Details of Financial Information in Format - C
e) Details of completed works of similar nature in Format- D as at date of Tender.
f)
Details of on-going works of similar nature in Format- E as at date of Tender.
g) Details of Plant, machinery & equipment in Format - F
h) Details of termination of contract by Employer, if any, in Format - G
i)
Details of Status of current litigations, if any in Format-H as at date of Tender.
j)
Certificates in support of suitability, technical know-how and capability for having
successfully completed the works during the last five years under Annexure „A‟.
i)
A detailed description on the approach methodology to the construction technology
proposed, schedule and type of equipment to be used, names and responsibilities and
detailed qualifications of the proposed sub-contractors, if any , etc.
j)
A detailed description of any method of approach specially devised by the Contractor to
speed up the work.
k) Current solvency or letter of support from the TENDERER‟S Banker, for an amount of
INR 22.00 Lakhs (Twenty two lakhs). Solvency certificate must have been obtained not
st
earlier than 31 December, 2014.
l)
Details of cases of having been barred or black listed from the Tendering process, if any.
Black-listed Agencies‟ Tender is liable to be rejected.
m) The tender should be submitted in English only. Supporting documents such as Annual
accounts, Balance sheets, Employer‟s certifications, Testimonials etc., if attached, in any
other language, should be translated in English. The Embassy / Official Diplomatic
Mission of the TENDERER‟s country in India must certify that English documents are true
and accurate translation of original documents.
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Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
n) All times and dates mentioned in this Tender Notice and application are Indian Standard
Time (IST). Indian Standard Time only will be followed for communication and other
purposes.
j) The tenderer has to submit the following records along with the tender
i.
PAN of the Bidder (Please enclose the attested photocopy of PAN card issued
by Income Tax Department)
ii.
Service Tax / VAT Number of the Bidder(Please enclose the attested photocopy
of Service Tax / VAT Registration Certificate issued by relevant authorities)
iii.
ESI Registration(Please enclose attested photocopy)
iv.
PF Registration of the Bidder (Please enclose attested photocopy of
Provident Fund Commissioner)
8.01
The TENDERERS must provide evidence of having adequate experience in carrying out civil works.
This should include supporting certificates of reports relating to financial, technical and other
capability of the TENDERERS.
8.02
The TENDERERS are required to make a presentation on their organisation, infrastructure,
project-scheduling, performance, capabilities etc.,etc. upon request from the Employer .
8.03
The TENDERERS for qualification shall provide all facilities to the Employer for verification
of the information / details furnished by them and also for inspection of their works carried out
/ in progress, if requested.
9.0
9.01
PARTICULAR ATTENTION :
The EMPLOYER reserves his rights to disqualify any TENDERER if:
(i)
The TENDERERS have made untrue or false representation in the forms, statements
and attachments submitted in proof of the qualification and requirements ;
(ii)
The TENDERER‟s track record of poor performance such as abandoning the work,
not properly completing the Contract, inordinate delays in completion or financial
failures etc.
(iii)
The TENDERERS have suits lodged / admitted / pending against it in a Court of Law
for proceedings for declaration of Bankruptcy, etc or any suit, which challenges the
basic existence of the TENDERER and substantially influences its capacity to
implement the Works satisfactorily. Information on the legal matters is to be
submitted as per FORMAT-I.
(iv)
The TENDERER shall unconditionally waive all rights in respect of challenging in any
court any matter concerning this TENDER evaluation and award / termination of
Contract.
10.0
FINAL DECISION MAKING AUTHORITY:
10.1
The main criteria for the selection of Contractors for the work will be on the consideration of
their ability to fulfill their obligations under the Contract. and competence to do good quality
works, within specified time schedule and in close co-ordination with other agencies,
resources committed, evaluation of technical submission etc. in addition to consideration
given for competitiveness of tender price.
10.2
After opening the outer envelope containing the Tender, its contents shall be examined for
compliance in pursuant to clause 5.0, in the presence of the TENDERERs or their authorized
representatives, at 15.00 hours, on the Last Date of receipt of Tender Documents, who
choose to be present. Tenders found not complying are liable to be rejected without further
examination. The contents of envelope titled “Technical Tender” will be opened first and its
contents shall be scrutinized as per requirements of Tender documents. Only for the
TENDERERs, whose contents of technical tender have been found in order and evaluated as
substantially responsive, the envelope titled “Financial Tender” shall be opened, at the same
address in the presence of TENDERERs or their authorized representatives, who choose to
be present at the time and date of opening of the tender. This intimation will be sent to those
11
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
TENDERERs whose technical tenders are found to be in order and evaluated as substantially
responsive.
10.3
Tenders determined to be substantially responsive will be checked by the Employer for any
arithmetic errors. Errors will be corrected by the Employer. Where there is discrepancy
between the unit rates in figures and in words, the rates in words only, will govern. The
amount stated in the tender will be adjusted by the Employer in accordance with the above
procedure for the correction of errors.
10.4
The Employer reserves the right, to accept or reject any Tender or to reduce the scope /
cancel the exercise without having to incur any cost or to assign any reason for its decision to
any party whatsoever, and the Employer’s decision on qualifying contractors will be final and
binding on all the contractors.
Note: (*) denotes requirement of enclosure(s) along with Tender.
Date of Submission
Authorized Signature of TENDERER with Official seal
12
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
Appendix - A
LETTER OF TRANSMITTAL
Date:
To
The Chief General Manager (EC)
Chennai Metro Rail Limited
Koyambedu, Depot,
Chennai – 600 107
Sir,
Sub:
Submission of Techno Commercial Tender for Proposed Construction of Car
SHELTER for CMRL, Depot,Koyambedu Chennai 600 107.
a) I / We ……………………………………….., having examined the details given in the Invitation to
TENDERERS, we hereby submit the following information and relevant documents.
b) I / We hereby certify that all the statements, information and data provided in the enclosed
formats A to G. and accompanying statements are true and correct to the best of my / our
knowledge.
c)
I / We .…………………………. have read the instructions appended with the qualification
document and I / We understand that any contract made between ourselves and the Employer
on the basis of the information given by me / us, is liable to be cancelled , if any false information
is detected at a later date.
d) I / We ……………………………..have also no objection, if enquiries are made on all the projects
and works listed by me / us, in the accompanying sheets or any other enquiry, on the information
furnished herewith in the accompanying sheets.
e) I / We have furnished all information and details as asked for and have no further pertinent
information to provide.
f)
I / We submit, the requisite certified solvency certificate and authorise the Employer to approach
the Bank issuing the Solvency Certificate to verify the correctness thereof. I / We also authorise
the Employer, to approach individuals, employers, companies, and corporation to verify my / our
competency and general reputation.
g) I / We submit in Annexure „A‟ the certificates in support of my / our suitability, technical know-how
and capability for having successfully completed the works during the last five years.
h) I / We also agree that the decision of the Employer, in the Qualification and selection of
Contractors will be final and binding upon me / us.
i)
I / We agree that the Employer reserves the right to qualify any contractor or to cancel the
exercise without assigning any reason for doing so or to incur any liability to any party
whatsoever.
j)
I / We agree not to withdraw from the contract after issue of LOA and before signing the
agreement. If so, we attendere by the condition that liquidated damages shall be claimed against
us by the Employer
k)
The following are enclosed as enclosures to the letter of transmittal :
1.
Certificate of Incorporation from Registrar of Companies
2.
Memorandum of Association
3.
Annual Report / Audited Balance Sheet & Profit and Loss Statement for the past 4 years
13
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
4. Registration with Govt. Departments or Public Bodies.
5.
Solvency Certificate from Bankers for the value of INR 22.00 Lakhs (Twenty two lakhs only),
th
current and dated, not earlier than 31 December 2014.
6.
Support Certificate from Bankers for Credit facilities available and cash flow of INR 18.00
Lakhs per month (exclusively available for this work)
7.
Letter of support from TENDERERs Bankers required to be enclosed in addition to the
subscribers of Bankers solvency certificate for INR 22.00 Lakhs.
8. Income Tax Clearance certificate / Saral Form giving details of total annual contract receipts
for the past five years under relevant paragraph.
9. Sales Tax / Works Contract Tax / VAT / PAN Registration and Clearance certificate.
10. PERT Charts and quality Formats used at site such as pour card for Concrete etc, referred in
Formats „D‟ & „E‟
11. Testimonials from Employers / Consultants for completion of works included in Format -D
12. LOI / Work Order issued by the Employers for ongoing works included in Format „E‟
13. Organization Chart of Company showing the Officer in-Charge who will have direct link with
and control of, site organization.
14. Organization Chart and Curriculum Vitae of top two officers, viz, Project Manager and
Coordinator.
15. Method Statement: Programming & Planning and Progress monitoring plan, weekly and
monthly ; Management of Direct Sub-Contractors from selection through execution of work;
Coordination with Specialist contractors ,if any, etc. ;Quality control & quality Assurance at
site; Safety Plan
16. Formats „A „ to „H „ with complete details., and any certificates other than that listed above.
I / we hereby agree to abide by the decisions of the Employer in all matters, relating to this
Qualification.
Date of Submission
Authorized Signature of TENDERER with Official Seal
14
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
QUALIFICATION REQUIREMENTS
1.
Do you satisfy requirement of Clause 5.01 a
Yes / No
2.
Do you satisfy requirement of Clause 5.01.b
Yes / No
3.
Do you satisfy requirement of Clause 5.01.c
Yes / No
4.
Do you satisfy requirement of Clause 5.01. d
Yes / No
5.
Do you satisfy requirement of Clause 5.01.e
Yes / No
6.
Do you satisfy requirement of Clause 5.01.f
Yes / No
7.
Do you satisfy requirement of Clause 5.01.g
Yes / No
8.
Do you satisfy requirement of Clause 5.02 (i)
Yes / No
9.
Do you satisfy requirement of Clause 5.02 (ii)
Yes / No
Have you enclosed necessary Documentary evidence for all
items Sl.No.1 to 7 above
Yes / No
10.
Date of Submission
Authorized Signature of TENDERER with Official Seal
15
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
FORMAT – A
STRUCTURE AND ORGANISATION OF TENDERER
S.No.
To be filled by the
Building Construction
Company
Details required
1
Name of the TENDERER's Company
2
Nationality of TENDERER
3
Establishment of the Company
i) Year
ii) Location
4.
The TENDERER is a company
(Please enclose attested copy of registration / incorporation
under appropriate laws of the TENDERER‟s country)
5
Address of the TENDERER :
i)
Registered Office Address
Telephone Number
Fax Number
E-mail Address
Web site
ii)
Local office address in India , if any:
Telephone Number
Fax Number
E-mail Address
iii)
Office address through which this work will be handled and
name of officer in-charge.
Telephone Number
Fax Number
E-mail Address
6
If the TENDERER is a Multinational Company, please furnish
the following :
a)
Whether the foreign company has an office in India?
If so, give the following details :
Year of Establishment
Location :
Name of the Contact Person :
16
Yes / No
Enclosed
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
Telephone Nos. :
Fax No.:
Email :
b)
Please mention the nature of Indian office. If so, please provide
the details whether marketing, liaison, capable of undertaking
complete project in India etc.
c)
Whether company has executed / currently executing / tender
for any project in India?
If so, please furnish the following details :
Name of the Employer :
Name of the Project :
Location of the Project :
Nature of Project :
Nature of Contract :
Project Duration :
Project value :
Probable Date of Completion
d)
The TENDERER has to furnish a detailed note on how it will
handle the project in India, if successful TENDERER, in terms
of (i) Finance,(ii) Manpower,(iii) Tools & equipment,(iv) Use of
local agencies and labour, (v) Project control and management
plan
7
Details of the Board of Directors
i) Name of the Director
ii) Qualification
iii) Organisation
iv) Office address
v) Telephone Number
vi) Fax Number
vii) E-mail Address
17
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
8
Enclose Company's Organisation Chart showing the structure
of the organisation including the names of the Directors / Chief
Executive Officer and position of Officers.
9
Number of years of experience and other Details.
a.
As a Principal Contractor
(Contractor shouldering major responsibility)
10(a)
Yes / No
i.
In own country
Yes / No
No. of Years :
ii.
Other countries (If yes, pl. specify country)
Yes / No
No. of Years :
Country :
Average number of permanent employees in the last 12
months.
i) Managerial
Nos.
ii) Technical
Nos.
iii) Administration
Nos.
iv) Financial
Nos.
v) Quality Control and Quality Assurance Engineer
Nos.
vi) Safety Officer
Nos.
vii) Industrial Relations Officer
Nos.
viii) Supervisors
Nos.
ix) Foreman
Nos.
x) Skilled Labours
Nos.
xi) Un Skilled Labours
Nos.
Nos.
Nos.
Nos.
xiii) Others ( to specify)
10(b)
Enclosed
1.
2.
3.
xii) Apprentices / Trainees
Nos.
11
i) How many years has your Company been in business of
similar work under its present name & address.
12
Whether registered with any Government / Public Sector
Undertaking / Local bodies like CPWD / MES / PWD or
equivalent applicable in the TENDERER's country.
……….Years
Yes / No.
1.
2.
If yes, please furnish details class and type of Registration.
3.
13
Registration Details :
i) Sales Tax Registration No or equivalent applicable in the
TENDERER's country & Valid upto
ii)
PF Registration No or equivalent applicable in the
TENDERER's country & Valid upto
18
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
iii) ESI Registration No or equivalent applicable in the
TENDERER's country & Valid upto
iv) Service Tax registration No or equivalent applicable in the
TENDERER's country & Valid upto
14
15
Whether adequate and satisfactory evidence to indicate
financial capacity of the organisation to undertake the said
construction work is enclosed.
Do you have experience in Modern technology of manufacture
and execute large span steel roof structure / concrete structure
/ Cast in situ or precast structure If yes, please furnish the
details.
Yes / No
Yes / No.
1.
2.
3.
16
i)
Do
you
have
and
follow
Safety
Manual?
If yes, please give details of health and safety facilities available
with you.
Yes / No
Enclose Environmental
Health and Safety Plan.
ii) Was there any major, fatal accident occurred at any of your
Sites during execution in the last five years? If yes, furnish
Details.
iii) Whether corrective action taken immediately and first-aid
facilities provided in the site?
17
Were any penalties imposed for delays on the completion of the
project?
If yes, Please furnish the name of project and reasons thereof.
Yes / No
Yes / No
Yes / No.
1. Name of Project :
Reasons
2. Name of Project :
Reasons
18
Were there any terminations of Contracts by the Employer?
If yes, please furnish the details.
Yes / No.
1. Name of Project :
Reasons
2. Name of Project :
Reasons
19
Litigation initiated by the Company and against the Company if
any?
i) Whether cases of litigation proceedings have arisen in your
projects during the last three financial years?
Yes / No
ii) If Yes, How many cases of litigation arisen during the last
three financial years?
iii) Furnish the details of the highest claim of Litigation during
the last three financial years.
19
Nos.
Rs.
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
iv) If the TENDERER is a multinational company, please furnish
the litigation history initiated by the Company and against the
company in India, if any
20
Details of the Banker
Name of the Banker
Contact person
Office Address
Telephone Number
Fax Number
21
Are you / Firm a Recipient of any Award in appreciation of your /
Firm’s
work?
If yes, please furnish the details
22
Please give atleast three references of Employers (Engineers,
Architects or top Officials of Organisation) for whom you may
have executed construction works of importance and similar
nature from whom the Employer can verify
Yes / No
1) Name :
Designation :
Company :
2) Name :
Designation :
Company :
3) Name :
Designation :
Company :
23
Any special information, which you may like to provide.
Place :
Authorized Signature of
the TENDERER
Common seal of the
Company
Date :
20
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
Format-C
\
FINANCIAL INFORMATIONS
Sl.No
Description
A
Annual Turn over in the last five financial
years ( In INR )
1
Year : 01st April 2009- 31st March 2010
2
Year : 01st April 2010- 31st March 2011
3
Year : 01st April 2011- 31st March 2012
4
Details to be filled in by TENDERER
Year : 01st April 2012 - 31st March 2013
5
Year : 01st April 2013 - 31st March 2014
B
Financial Information (In INR )
I
Year : 01st April 2009- 31st March 2010
a. Total assets
b. Current assets
c. Total Liabilities
d. Current Liabilities
e. Profits before taxes
f. Profits after taxes
g. Net worth
h. Working Capital
II
Year : 01st April 2010- 31st March 2011
a. Total assets
b. Current assets
c. Total Liabilities
d. Current Liabilities
e. Profits before taxes
f. Profits after taxes
g. Net worth
h. Working Capital
III
Year : 01st April 2011 - 31st March 2012
a. Total assets
b. Current assets
21
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
c. Total Liabilities
d. Current Liabilities
e. Profits before taxes
f. Profits after taxes
g. Net worth
h. Working Capital
IV
Year : 01st April 2012 - 31st March 2013
a. Total assets
b. Current assets
c. Total Liabilities
d. Current Liabilities
e. Profits before taxes
f. Profits after taxes
g. Net worth
h. Working Capital
V
Year : 01st April 2013 - 31st March 2014
a. Total assets
b. Current assets
c. Total Liabilities
d. Current Liabilities
e. Profits before taxes
f. Profits after taxes
g. Net worth
h. Working Capital
C
Solvency Certificate ( In INR )
a. Name of Banker with address
b. Date of Certificate
D
c. Amount
Credit facilities available to TENDERER –
Fund and non-fund based such as Cash
Credit, Working capital term loans, LCs
and Bank Guarantees
- Banker's or
Bankers' Letter must be produced - (In INR)
a. Name of Banker with address
b. Date of Letter of Support
22
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
E.
c. Amount
TENDERER's Financial resources for this
project
a. Own resources
F.
b. Banker's or Bankers' credits
a. Approximate total value of on-going works
b. Total Value of works to be completed as of
now
Note:
1) The TENDERER should furnish the value of
work to be completed as of now along with
break-up details of each work in the Proforma
enclosed with this Format - C.
G.
Note:
2) The TENDERER has to ensure that the list
of works covered in this Proforma should be
same as the ones listed in Format - E (List &
details of Ongoing works) with Proforma of
each work.
Anticipated total value of new works for
the next financial year i.e.
Please attach SARAL Form
Place :
Date :
Authorized Signature of the TENDERER
Official Seal
23
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
Format-D
Details of completed works in the Last Five Years
(To be furnished for each Project Separately)
S.No.
Details required
1
Name of work
2
Country and location
3
Employer‟s name and address
To be filled by the TENDERER
Name:
Address :
4
Consultants name and address.
Name
:
Address :
5
Total tendered cost of work Agreement No.
Date
INR
……………..
Agreement No:
Date :
6
Total actual cost of work after completion.
INR …………….. Millions
7
Excess / less in percentage.
……………..%
8
Explain if Excess / less is higher by 20% of the
tendered cost of work.
9
Date of commencement
10
Period of completion
11
Stipulated date of completion
12
Actual date of completion
13
Extended by the contractor, if any. Reason for
non-completion of work in stipulated time limit /
extended time limit, if so furnish details
Yes / No
14
Extension of time granted by the Employer, if any.
Yes / No
15
16
If yes, please specify the reason for extension of
time.
Brief description of works including principal
features and quantities of main items of the work.
Name of Contractor‟s Engineer in-charge of the
Project & Qualifications.
24
Name :Qualification :
Millions
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
17
Details of specialised work executed under this
Contract.
18
Details of specialised work executed by their own
divisions under the Contract
20
Whether the Programming and planning plan was
followed in the form of Pert Chart adopting
softwares like Primavera / MS Project?
Yes / No
21
Whether the Quality Control and Quality
Assurance
function
was
carried
out?
If yes, Please give details and copies of quality
formats used in anyone project
Yes / No
22
Whether the safety measures was followed?
If yes, Please give details.
Yes / No
23
i) Were there any labour strikes in any of your
Projects, during the course of Execution of
Project? If yes, Please give details.
Yes / No
ii) Whether corrective action taken immediately?
Yes / No
24
Were there any penalties / fines / stop notice /
compensation / liquidated damages imposed
during
execution
of
the
project?
Yes / No
Amount :
Reason :
If Yes, Please give amount, details and reason.
25
Whether the contract of the work was terminated?
If Yes, furnish the details.
Yes / No
Name of the Project :
Reason :
26
Please specify the details of litigation / arbitration
cases, if any, pertaining to works completed.
Yes / No
If Yes, furnish the details i.e. Nature of litigation /
arbitration. Please furnish whether the litigation is
initiated by the Company or against the Company.
27
Attach Employer‟s certificate, as may be available
(Not below the rank of Director or equivalent)
Yes / No
Date:
Authorized Signature of TENDERER
Place :
Official Seal
25
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
Format-E
Details of On-Going works
(To be furnished for each Project Separately )
S.No.
Details required
1
Name of work
2
Country and location
3
Employer's name and address
To Be filled by the TENDERER
Name
:
Address :
4
Consultants name and address.
Name
:
Address :
5
Total tendered cost of work (Agreement No. and Date)
6
(a) Brief description of works including principal features
and
quantities
of
main
items
of
the
work.
7
i) Percentage of physical completion
INR …………………. Millions
ii) Amount billed for the work completed.
iii) Cost of work remaining to be executed as on the date of
submission.
iv) Stipulated date of completion
v) Anticipated date of completion
8
Name of Contractor‟s Engineer in-charge of the Project &
Qualifications.
Name
Qualification :
9
Details of specialised works under this Contract
10
Specialised works being executed by their own divisions
26
:
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
11
i) Were there any labour strikes in any of your Projects,
during
the
course
of
Execution?
Yes / No
If yes, Please give details.
ii) Whether corrective action taken immediately?
12
Were there any
compensation
/
penalties /
liquidated
fines / stop-notice /
damages
imposed?
If Yes, Please give amount, details and reason.
Yes / No
Yes / No
Amount :
Reason :
13
Please specify the details of litigation / arbitration cases, if
any, pertaining to works ongoing.
Yes / No
14
Attach Employer's certificate, as may be available (Not
below the rank of Director or equivalent)
Yes / No
Place :
Authorized
Signature of the TENDERER
Date :
Common seal of the Company
27
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
Format-G
Details of Termination of contract by previous Employers in the past, if any
(To be furnished for each Project Separately, if more than one )
S.No.
Particulars
To Be filled by the TENDERER
1
Name of works
2
Name of the Employer
3
Value of Contract in INR
4
Period of Contract
5
Terminated at what stage
6
Reasons / grounds for termination
7
Approx. value of work completed at the time of
termination in INR
8
Approx. value of balance work not completed in
INR
9
Remarks
Place :
Authorized Signature of the
TENDERER
Date :
Common seal of the Company
28
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
Format ‘H’
STATUS OF CURRENT LITIGATIONS, IF ANY
(To be furnished for each Project Separately, if more than one )
The TENDERER is required to disclose as part of tender submission all cases filed against the
TENDERER in any Court of Law in any country. The TENDERER shall give the information in the
following format in separate sheets for each litigation as applicable:
I
General Information
(1)
Name of the Petitioner
:
(2)
Name of the Court in which case has
been admitted.
:
(3)
Name / designation of the Presiding
Authority of the Court
:
(4)
Date of Filing of the case and date of
Admittance of the case.
:
(5)
Expected date of next hearing
:
(6)
Has hearing already commenced?
so, when was the last hearing?
If
:
(7)
Name & Address of the TENDERER‟S
Counsel
:
(8)
Name & Address of the Petitioner‟s
Counsel
:
(9)
Current status of the litigation –
Whether any interim injunction or
injunction award has been given. If so,
give the details?
:
(10)
Has any appeal been filed against any
interim injunction or such award?
:
(11)
Value of litigation / damages claimed /
out standings and disputes, as per the
Petitioner
:
(12)
Any arrest warrant or any property
attachment
or
any
insolvency
proceedings or any such decree issued
against the TENDERER?
Give the
details.
:
29
Part – 1C – Qualification Criteria
Chennai Metro Rail Ltd
30
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
CHENNAI METRO RAIL LIMITED
(A JOINT VENTURE OF GOVERNMENT OF INDIA AND GOVERNMENT OF TAMILNADU)
PROPOSED CONSTRUCTION OF CAR SHELTER, AT CMRL
KOYAMBEDU DEPOT
CHENNAI 600 107
Part – 1A - CONDITIONS OF CONTRACT
DATE OF SUBMISSION OF TENDER 07-04-2015 at 15.00 Hours
DATE OF OPENING OF TENDER 07-04-2015 at 15.30 Hours
TO BE SUBMITTED TO:
Chief General Manager (EC)
Chennai Metro Rail Limited
Admin. Building, CMRL Depot
Poonnamallee High Road ,
Koyambedu, Chennai - 600107
TENDER SUBMITTED BY:
M/s._________________________
Address_____________________
____________________________
1
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
CHENNAI METRO RAIL LIMITED
(A JOINT VENTURE OF GOVERNMENT OF INDIA AND GOVERNMENT OF TAMILNADU)
PROPOSED CONSTRUCTION OF CAR PARKING SHELTER, AT CMRL
KOYAMBEDU DEPOT, CHENNAI 600 107
CONDITIONS OF CONTRACT
CONTENTS
CONTRACT DATA
TENDER FORM
1.
INTRODUCTION
1.1.
1.2.
1.3.
1.4.
1.5.
1.6.
1.7.
1.8.
1.9.
1.10.
1.11.
1.12.
1.13.
1.14.
1.15.
1.16.
1.17.
1.18.
2.
THE EMPLOYER
2.1.
2.2.
2.3.
2.4.
2.5.
3.
Background of Organization
Project Outline and Summary
Instructions to Tenderers
GENERAL CONDITIONS
Definitions
Interpretation
Communications
Law and Language
Validity of Tender
Priority of Documents
Contract Agreement
Assignment
Care and Supply of Documents
Employer’s Use of Contractor’s Documents
Contractor’s Use of Employer’s Documents
Confidential Details
Compliance with Laws
Joint and Several Liability
Right of Access to the Site
Permits, Licences or Approvals
Employer’s Personnel
Employer’s Financial Arrangements
Employer’s Claims
THE ENGINEER
3.1.
3.2.
Engineer’s Duties and Authority
Delegation by the Engineer
2
Chennai Metro Rail Ltd,
3.3.
3.4.
4.
Instructions of the Engineer
Determinations
THE CONTRACTOR
4.1.
4.2.
4.3.
4.4.
4.5.
4.6.
4.7.
4.8.
4.9.
4.10.
4.11.
4.12.
4.13.
4.14.
4.15.
4.16.
4.17.
4.18.
4.19.
4.20.
4.21.
4.22.
4.23.
4.24.
4.25.
4.26.
4.27.
4.28.
4.29.
5.
Conditions of Contract for Car Shelter works
Contractor’s General Obligations
Performance Guarantee / Performance Bond
Contractor’s Representative
Subcontractors
Assignment of Benefit of Subcontract
Co-operation
Setting Out
Post Construction Survey
Joint Inspection
Safety Procedures
Quality Assurance
Burden for Damage
Site Data
Sufficiency of the Accepted Contract Amount
Unforeseeable Physical Conditions
Rights of Way and Facilities
Avoidance of Interference
Access Route
Transport of Goods
Contractor’s Equipment
Protection of the Environment
Electricity and Water
Progress Reports
Security of the Site
Protection of Adjoining Facilities
Contractor’s Operations on Site
Site office
Vector Control
Fossils/Antiquities
STAFF AND LABOUR
5.1.
5.2.
5.3.
5.4.
5.5.
5.6.
5.7.
5.8.
5.9.
5.10.
5.11.
Engagement of Staff and Labour
Rates of Wages and Conditions of Labour
Persons in the Service of Employer
Labour Laws
Working Hours
Facilities for Staff and Labour
Health and Safety
Contractor’s Superintendence
Contractor’s Personnel
Records of Contractor’s Personnel and Equipment
Disorderly Conduct
3
Chennai Metro Rail Ltd,
6.
PLANT, MATERIALS AND WORKMANSHIP
6.1.
6.2.
6.3.
6.4.
6.5.
6.6.
6.7.
6.8.
6.9.
6.10.
6.11.
6.12.
7.
Contractor’s Obligations
Delayed Tests
Retesting
Failure to Pass Tests on Completion
PRACTICAL COMPLETION AND PRACTICAL COMPLETION CERTIFICATE
9.1.
9.2.
9.3.
9.4.
10.
Commencement of Works
Period of Completion
Programme
Delays
Extension of time for Completion
Rate of Progress
Liquidated Damages
TESTS ON COMPLETION
8.1.
8.2.
8.3.
8.4.
9.
Manner of Execution
Samples
Inspection
Testing
Rejection
Remedial Work
Employership of Plant and Materials
Storage of Materials
Temporary Hoardings and Safety netting
Pollution and site Hygiene
Fire Protection during Construction
Royalties
COMMENCEMENT, DELAYS AND SUSPENSION
7.1.
7.2.
7.3.
7.4.
7.5.
7.6.
7.7.
8.
Conditions of Contract for Car Shelter works
Practical Completion of the Works and Sections
Practical Completion of Parts of the Works
Interference with Tests on Completion
Surfaces Requiring Reinstatement
DEFECTS LIABILITY
10.1.
10.2.
10.3.
10.4.
10.5.
10.6.
10.7.
10.8.
10.9.
Completion of Outstanding Work and Remedying Defects
Cost of Remedying Defects
Extension of Defects Liability Period
Failure to Remedy Defects
Removal of Defective Work
Further Tests
Right of Access
Contractor to Search
Unfulfilled Obligations
4
Chennai Metro Rail Ltd,
10.10.
11.
Notice to Correct
Termination of the Contract
Valuation at Date of Termination
Payment after Termination
Employer’s Entitlement to Termination
SUSPENSION
15.1.
15.2.
15.3.
15.4.
15.5.
16.
Item Rate Contract
Contract Sum
Earnest Money Deposit
Mobilisation advance
Terms of payment
Payment of Part Rates
Price Adjustment
Interim Payments
Final Bill
Delayed Payments
Payment of Retention money
Secured advance on Materials at site
Currencies of Payment
TERMINATION
14.1.
14.2.
14.3.
14.4.
14.5.
15.
Variations, Provisional and Prime Cost Sums
Right to Vary
Variation Procedure
Payment in Applicable Currencies
Daywork
CONTRACT SUM AND PAYMENT
13.1.
13.2.
13.3.
13.4.
13.5.
13.6.
13.7.
13.8.
13.9.
13.10.
13.11.
13.12.
13.13.
14.
Works to be Measured
Method of Measurement
Omissions
VARIATIONS AND ADJUSTMENTS
12.1.
12.2.
12.3.
12.4.
12.5.
13.
Clearance of Site
MEASUREMENT AND EVALUATION
11.1.
11.2.
11.3.
12.
Conditions of Contract for Car Shelter works
Suspension of work
Consequences of Suspension
Payment for Plant and Materials in Event of Suspension
Prolonged Suspension
Resumption of Work
RISK AND RESPONSIBILITY
5
Chennai Metro Rail Ltd,
16.1.
16.2.
16.3.
16.4.
16.5.
16.6.
17.
General Requirements for Insurances
Injury to Persons and Property of Employer
Insurance for Works and Contractor’s Equipment
Insurance against Injury to Persons and Damage to Property
Insurance for Contractor’s Personnel
FORCE MAJEURE
18.1.
18.2.
18.3.
18.4.
18.5.
18.6.
18.7.
19.
Indemnities
Contractor’s Care of the Works
Employer’s Risks
Consequences of Employer’s Risks
Intellectual and Industrial Property Rights
Limitation of Liability
INSURANCE
17.1.
17.2.
17.3.
17.4.
17.5.
18.
Conditions of Contract for Car Shelter works
Definition of Force Majeure
Notice of Force Majeure
Duty to Minimise Delay
Consequences of Force Majeure
Force Majeure Affecting Subcontractor
Optional Termination, Payment and Release
Release from Performance under the Law
CLAIMS, DISPUTES AND ARBITRATION
19.1.
19.2.
19.3.
19.4.
19.5.
19.6.
19.7.
19.8.
19.9.
19.10.
19.11.
19.12.
19.13.
19.14.
Contractor’s Claims
Payment for Claims
No Legal Action till Dispute Settlement Procedure is Exhausted
Notice of Dispute
Two Stages for Dispute
Restoration
Conciliation
Conciliation Procedure
Termination of Conciliation Proceedings
Arbitration
Interest on Arbitration Award
Cost of Arbitration
Jurisdiction of Courts
Suspension of Work on Account of Arbitration
6
Chennai Metro Rail Ltd,
20.
Conditions of Contract for Car Shelter works
APPENDIX
APPENDIX 1 - PROFORMA OF BANK GUARANTEE FOR EARNEST MONEY DEPOSIT
APPENDIX 2 - ARTICLES OF AGREEMENT
APPENDIX 3 - FORM OF PERFORMANCE GUARANTEE
APPENDIX 4 - AFFIDAVIT
APPENDIX 5 - PROFORMA OF BANK GUARANTEE FOR MOBILISATION ADVANCE
PAYMENT
7
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
CONTRACT DATA
Period of Sale of Tender
Document
:
06-03-2015 to 04-04-2015
(During office hours from 10.00 hours to 15.00 hours)
Date of submission of tenders
:
15.00 Hours on 07-04-2015
Validity of tender
:
30 days from last date of submission of tender
Time and Date of Pre-bid
meeting
:
15.00 Hours on 17-03-2015 at the office of Chief General
Manager (EC), CMRL, Koyambedu, Chennai 600 107.
Issue of Pre tender
Clarifications
On or before 15:00 Hours, 23-03-2015
Earnest Money Deposit
:
Rs 54,000/- (Rupees Fifty four Thousand Only) by
Demand Draft, drawn from any Nationalized or Scheduled
Bank in India payable at Chennai, in favour of Chief Project
Manager (D & V), Chennai Metro Rail Ltd, Chennai-107,
Tamil Nadu, India (OR) by Bank Guarantee on any
Nationalized or Scheduled Bankers in India, valid up to 0805-2015
Tender Documents to be
submitted to
:
Chief General Manager (EC)
Chennai Metro Rail Limited
Admin. Building, CMRL Depot
Poonnamallee High Road ,
Koyambedu, Chennai - 600107
Place of Opening of Tender
:
Office of Chief General Manager (EC)
Chennai Metro Rail Limited
Admin. Building, CMRL Depot
Poonnamallee High Road ,
Koyambedu, Chennai - 600107
Period of completion of work
:
Three months ( From the date of issue of LOA)
Cost of Tender Document
:
Rs.5,000/- (Rupees Five Thousand only) including tax by
Demand Draft drawn from any Nationalized or Scheduled
Banks in India payable at Chennai, in favour of the Chennai
Metro Rail Ltd, Chennai-107, Tamil Nadu, for hard copy and
Rs 4,000/- (Rupees Four Thousand only) for downloading
using web access.
TENDER SUBMITTED BY
8
Chennai Metro Rail Ltd,
Conditions of Contract for Car Shelter works
TENDER FORM
To
Chief General Manager (EC)
Chennai Metro Rail Limited
Admin. Building, CMRL Depot
Poonnamallee High Road ,
Koyambedu, Chennai - 600107
Dear Sir,
1.
Having examined the drawings, specification, designs and Bill of Quantities, relating to
the works specified in the memorandum hereinafter set out, and having visited and examined
the site of the works specified in the said tender, and having acquired the requisite information
relating thereto as affecting the Tender, I / we, hereby offer to execute the works specified in the
said tender within the time specified in the said memorandum at the rates mentioned in the
attached Bill of Quantities and in accordance in all respects with the specification, designs,
drawings, and instructions in writing referred to in the Conditions of Tender, the Articles of
Agreement, Special Conditions, Bill of Quantities, and Conditions of Contract, and with such
materials as are provided for by and in all other respects in accordance with such conditions so
far as they may be applicable.
MEMORANDUM
a) Description of works
Proposed Construction of Car Parking Shelter
CMRL,KoyambeduDepot,koyambedu, Chennai 600 107.
b) Earnest Money Deposit
Rs 54, 000/- (Rupees Fifty FourThousand Only) by Demand
Draft, drawn from any Nationalized or Scheduled Bank in
India payable at Chennai, in favour of the Chennai Metro Rail
Ltd, Chennai-600 107, Tamil Nadu, India (OR) by Bank
Guarantee on any Nationalized or Scheduled Bankers in
India, valid up to 08-05-2015
c) Percentage to be deducted
from bills towards retention
money
at
5% (Five Percent) of the value of work billed in which 2.5 % of
final bill value, will be retained for a period of six Months, from
the date of handing over the Project, in all respects.
(d) Date of Commencement
10 days from the date of issue of Letter of Award.
(e) Period of Contract
3 (Three) Months from the date of signing the Agreement
9
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
2.
Should this Tender be accepted, I / we hereby agree to abide by and fulfill the terms and
provisions of the said Conditions of Contract annexed hereto or in default thereof to forfeit and pay to
Chennai Metro Rail Limited, Chennai -600 107 the amount mentioned in the said Contract.
3.
We agree to execute the proposed project works with complete cooperation and coordination with
the independent other contractors, if any, to achieve sequential, unhindered and harmonious progress
with the objective of completion of the Entire Project within the stipulated time for the entire project
works for the Employer’s beneficial use of the Project.
4.I / We have enclosed herewith the Earnest Money Deposit for INR 54,000/- in the form of which
amount is not to bear any interest. Should I / we, fail to execute the contract when called upon to do so I /
we do hereby agree that this sum shall be forfeited by me / us, to the Chennai Metro Rail Limited,
Chennai -600 107.
5.If this Tender is accepted We agree to provide a Bank Guarantee from a Nationalized / Scheduled Bank
in India as Performance Bond for a sum equivalent to Five percent of the Contract value for the due
performance of the Contract under the terms of the conditions of Contract within time.
6.
We agree to abide by this Tender for the period of Thirty days from the last date of submission of
tender and it shall remain binding upon us and may be accepted at any time before the expiration of that
period, without any additional cost.
7.
Unless and until, a formal agreement is prepared and executed this Tender together with your
written acceptance thereof shall constitute a binding contract between us.
8.
The lists showing the particulars of large works carried out and the names of manufacturers of
specialized items as required, are enclosed.
9.
Our bankers are :
(Please state name, address, and phone No.)
i)…………………………………………..
ii)………………………………………….
The names of Partners of our Firm / Directors, of our company are :
(Please state name, address, and Phone No.)
i)…………………………………………
ii) …………………………………………
10
Chennai Metro Rail Ltd,
Conditions of Contract for Car Shelter works
The name of the Partner, of the Firm / Director of our company, authorised to sign :
Yours faithfully,
Authorised Signature of Tenderder
(Should be signed by the authorised signatory. Board Resolution in the case of Company or a letter
signed by all partners in the case of Firm to be enclosed.)
WITNESSES :
i)
Signature:
Occupation:
Address:
ii)
Signature:
Occupation:
Address:
11
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
1.
INTRODUCTION
1.1.
Background of Organisation
Proposed Construction of Car Parking Shelter for CMRL,KoyambeduDepot,Koyambedu
Chennai 600 107. This involves parking of cars of about 100 nos On behalf of the
President of India, the Chief General Manager (EC ), CMRL, Koyambedu Depot ,
Chennai 600 107 Tamil Nadu, India invites tender for Proposed Construction of Car
SHELTER for CMRL,KoyambeduDepot,Koyambedu Chennai 600 107.
1.2.
Project Outline and Summary
The scope of this tender includes for
a. Civil works including steel trusses and posts with galvalume sheets.
1.3.
Instructions to Tenderers
1.3.1.
Before submission, the Tenderer shall visit the site and familiarize
himself with the site conditions including access to site, condition of
existing structures, space for stacking of material and auxiliary
construction activity, availability of required construction materials locally
etc. and also carefully examine the conditions of contract, technical
specifications (including drawing and other specifications referred to
therein), the schedules and the bill of quantities and if there should be or
appear to be any ambiguity in or discrepancy between any of these
documents or between figured and measured dimensions upon the
drawings, he should immediately refer the matter to the Employer /
Employer’s Personnel for clarifications.
1.3.2.
The Tenderer shall investigate the following items during the site
inspection referred above and to provide in his Tender rates for
assuming full responsibility for services and amenities therefor, which will
not be payable separately by the Employer.
●
Availability of power for construction
●
Availability of water for construction.
●
Means of disposal of storm waterfrom the site.
●
Means of disposal of water due to de-watering at the site
●
Suitability of soil stratum at foundation base
1.3.3.
The Employer discourages stipulation of additional conditions by the
Tenders, as they are expected to accept the various provisions and
conditions in the Tender documents. No conditional offer will be
12
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
accepted.
1.3.4.
Timely completion of the works is the essence of this contract and the
period specified for the completion of the works from the date of Letter of
Acceptance must be adhered to as indicated. Any deviation proposed
shall be clearly mentioned. Commitment on early completion of work will
be given due weightage while deciding on the tender.
1.3.5.
The Tenderer shall complete the required documentation and fill in the
rates and amounts in the bill of quantities. He shall sign and date the
Tender documents in the spaces provided for the purpose. The Tenderer
shall initial each page of the Tender Documents.
1.3.6.
The tender shall be signed by person or persons duly authorised by the
Tenderer with signature duly witnessed. In the case of proprietary firm
the Tender shall be signed by the proprietor. In case of a partnership firm
the Tender shall be signed by partner duly authorised under partnership
deed. In the case of a limited company the Tender shall be signed by a
person holding Power of Attorney. In the case of consortium authorised
signatory of each member of consortium.
1.3.7.
The Tender shall contain an address for serving notices required to be
served to the Tenderer in connection with the Tender.
1.3.8.
The Tender form and the documents attached to it shall not be detached
one from the other, and no alteration or mutilation (other than filling in all
the blank spaces) shall be made in any of the documents attached
hereto. Any modification proposed to the entries in the attached
documents shall be pointed out in the covering letter; otherwise it shall
not be entertained.
1.3.9.
The rates quoted by the Tenderer shall not be subject to any adjustment
with variations in wage rates, taxes, levies, prices of material or any
other costs except where specific provisions have been made in this
document.
1.3.10.
The Tender shall be accompanied by the following information,
schedules and drawings:Construction programme showing the
Tenderer’s proposed sequence of operations together with the estimated
time for each activity, including preparation of Shop drawings and
designs for approval of the Employer / the Engineer / Employer’s
repressentative manufacture, delivery, erection, commissioning and total
completion of the work, etc. The tenderer shall submit a bar chart for
fabrication and construction activities for the building.
The tenderer’s proposals for supervising the work, including the numbers and
experience of the various grades of supervisory personnel/officers for each
month of the construction period and name of the person proposed to act as site
in charge with brief details of his qualification and experience.
13
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
Schedule of labour requirements showing the total estimated labour force, for
each month of construction period.
Schedule of proposed sub-contractors / associates.
Schedule of monthly electric power consumption including peak power
requirement where applicable.
List of machinery & equipment to be deployed for the project.
The Tenderer should carefully go through the safety & quality norms required for
the project.The Tenderer has to strictly adhere to the quality & safety
requirements stated therein the Conditions of contract.
The Employer reserves the right to adjust arithmetical or other errors in the
tender in accordance with the following general rules. In the event of discrepancy
between words and figures quoted, the description in words shall prevail.
Similarly in the event of an error in the amount column arising as a result of
wrong extension, the unit or item rates shall be regarded as firm and extensions
amended accordingly.
Collection of Information for Tender: The Tenderer must obtain for himself on
his own responsibility and at his own expense all the information which may be
necessary for the purpose of making a Tender and for entering into a contract
and must examine the Drawings and must inspect the site of the work and
acquaint himself with all local and site conditions, means of access to the work,
nature of the work, nature of soil conditions, availability of any infrastructure and
all matters appertaining thereto. Ignorance of the site conditions shall not be
accepted by the Employer as a basis for any claim for compensation.
2.
GENERAL CONDITIONS
2.1.
Definitions
The contract document consists of the Agreement, Letter of Intent & Letter of Award, General
Instructions, Notice Inviting Tender, General Conditions of the Contract, Special Conditions
Technical Specifications and Schedule of quantities, suggested bar chart, Tender drawings
including all modifications thereof incorporated in the document before the execution and the
Contract Drawings prepared by The Employer from time to time. The following words and
expressions shall have the meanings stated. Words indicating persons or parties include
corporations and other legal entities, except where the context requires otherwise
2.1.1.
The Contract
“Contract” means the Contract Agreement, the Letter of Acceptance, the Letter
of Tender, these Conditions, the Specification, the Drawings, the Schedules, and
the further documents (if any) which are listed in the Contract Agreement or in
the Letter of Acceptance.
“Contract Agreement” means the contract agreement (if any) referred to in
14
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
Clause 2.7 [Contract Agreement].
“Letter of Acceptance” means the letter of formal acceptance, signed by the
Employer, of the Letter of Tender, including any annexed memoranda comprising
agreements between and signed by both Parties. If there is no such letter of
acceptance, the expression “Letter of Acceptance” means the Contract
Agreement and the date of issuing or receiving the Letter of Acceptance means
the date of signing the Contract Agreement.
“Letter of Tender” means the document entitled letter of tender, which was
completed by the Contractor and includes the signed offer to the Employer for
the Works.
“Specification” means the document entitled specification, as included in the
Contract, and any additions and modifications to the specification in accordance
with the Contract. Such document specifies the Works.
“Drawings” means the drawings of the Works, as included in the Contract,and
any additional and modified drawings issued by (or on behalf of) the Employer in
accordance with the Contract.
“Schedules” means the document(s) entitled schedules, completed by the
Contractor and submitted with the Letter of Tender, as included in the Contract.
Such document may include the Bill of Quantities, data, lists, and schedules of
rates and/or prices.
“Tender” means the Letter of Tender and all other documents which the
Contractor submitted with the Letter of Tender, as included in the Contract.
“Appendixto Tender” means the completed pages entitled appendix to tender
which are appended to and form part of the Letter of Tender.
“Bill of Quantities”and “Daywork Schedule” mean the documents so named (if
any) which are comprised in the Schedules.
2.1.2.
Parties and Persons
“Party” means the Employer or the Contractor, as the context requires.
“Employer” means the person named as employer in the Form of tender and the
legal successors in title to this person.
“Tenderer” means the company which competes withotherstogettheopportunityto
do work for the employer by offering a competitive quote todo the works defined
in the tender documents.
“Contractor” means the person(s) named as contractor in the Letter of Tender
accepted by the Employer and the legal successors in title to this person(s).
“Engineer” means the person appointed by the Employer to act as the Engineer
for the purposes of the Contract and named in the Form to Tender, or other
15
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
person appointed from time to time by the Employer.
“Contractor‟s Representative” means the person named by the Contractor in
the Contract or appointed from time to time by the Contractor under Clause 5.3
[Contractor’s Representative], who acts on behalf of the Contractor.
“Employer‟s Personnel” means the Engineer, the assistants referred to in
Clause 4.2 [Delegation by the Engineer] and all other staff, labour and other
employees of the Engineer and of the Employer; and any other personnel notified
to the Contractor, by the Employer or the Engineer, as Employer’s Personnel.
“Contractor‟s Personnel” means the Contractor’s Representative and all
personnel whom the Contractor utilises on Site, who may include the staff, labour
and other employees of the Contractor and of each Subcontractor; and any other
personnel assisting the Contractor in the execution of the Works.
“Subcontractor” means any person named in the Contract as a subcontractor,
or any person appointed as a subcontractor, for a part of the Works; and the
legal successors in title to each of these persons.
2.1.3.
Dates, Tests, Periods and Completion
“Base Date” means the date 28 days prior to the latest date for submission of the
Tender.
“Commencement Date” means
8.1[Commencement of Works].
the
date
notified
under
Clause
“Time for Completion” means the time for completing the Works or a Section
(as the case may be) under Clause 8.2 [Time for Completion],as stated in the
Appendix to Tender, calculated from the Commencement Date.
“Tests on Completion” means the tests which are specified in the Contract or
agreed by both Parties or instructed as a Variation, and which are carried out
under Clause 9 [Tests on Completion] before the Works or a Section (as the
case may be) are taken over by the Employer.
“Practical Completion Certificate” means a certificate issued under Clause
10[Employer’s Practical Completion].
“Tests after Completion” means the tests (if any) which are specified in the
Contract and which are carried out in accordance with the provisions of the
Particular Conditions after the Works or a Section (as the case may be) are taken
over by the Employer.
“Defects Liability Period” means the period for notifying defects in the Works or
a Section (as the case may be) under Clause 11.1[Completion of Outstanding
Work and Remedying Defects], as stated in the Conditions of the contract,
calculated from the date on which the Works or Section is completed as certified
under Clause 10.1 [Practical Completion of the Works and Sections].
16
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
“day” means a calendar day and “year” means 365 days.
2.1.4.
Money and Payments
“Accepted Contract Amount” means the amount accepted in the Letter of
Acceptance for the execution and completion of the Works and the remedying of
any defects.
“Contract Sum” means the price defined in Clause 14.1 [The Contract Sum],
and includes adjustments in accordance with the Contract.
“Cost” means all expenditure reasonably incurred (or to be incurred) by the
Contractor, whether on or off the Site, including overhead and similar charges,
but does not include profit.
“Final Payment Certificate” means the payment certificate issued under Clause
14.17 [Issue of Final Payment Certificate].
“Final Statement” means the statement defined in Clause 14.15[Application for
Final Payment Certificate].
“Foreign Currency” means a currency in which part (or all) of the Contract Sum
is payable, but not the Local Currency.
“Interim Payment Certificate” means a payment certificate issued under
Clause 14 [Contract Sum and Payment], other than the Final Payment
Certificate.
“Local Currency” means the currency of the Country.
“Payment Certificate” means a payment certificate issued under Clause 14[
Contract Sum and Payment ].
“Provisional Sum” means a sum (if any) which is specified in the Contract as a
provisional sum, for the execution of any part of the Works or for the supply of
Plant, Materials or services under Clause 13.1 [Provisional Sums].
“Retention Money” means the accumulated retention moneys which the
Employer retains under Clause 14.7 [Application for Interim Payment Certificates]
and pays under Clause 14.13 [Payment of Retention Money].
“Statement” means a statement submitted by the Contractor as part of an
application, under Clause 14 [Contract Sum and Payment], for a payment
certificate.
2.1.5.
Works and Goods
“Contractor‟s Equipment” means all apparatus, machinery, vehicles and other
things required for the execution and completion of the Works and the remedying
of any defects. However, Contractor’s Equipment excludes Temporary Works,
Employer’s Equipment (if any), Plant, Materials and any other things intended to
17
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
form or forming part of the Permanent Works.
“Goods” means Contractor’s Equipment, Materials, Plant and Temporary
Works, or any of them as appropriate.
“Materials” means things of all kinds (other than Plant) intended to form or
forming part of the Permanent Works, including the supply-only materials (if any)
to be supplied by the Contractor under the Contract.
“Permanent Works” means the permanent works to be executed by the
Contractor under the Contract.
“Plant” means the apparatus, machinery and vehicles intended to form or
forming part of the Permanent Works.
“Temporary Works” means all temporary works of every kind (other than
Contractor’s Equipment) required on Site for the execution and completion of the
Permanent Works and the remedying of any defects.
“Works” mean the Permanent Works and the Temporary Works, or either of
them as appropriate.
2.1.6.
Other Definitions
“Contractor‟s Documents” means the calculations, computer programs and
other software, drawings, manuals, models and other documents of a technical
nature (if any) supplied by the Contractor under the Contract.
“Country” means the country in which the Site (or most of it) is located,where
the Permanent Works are to be executed.
“Employer‟s Equipment” means the apparatus, machinery and vehicles (if any)
made available by the Employer for the use of the Contractor in the execution of
the Works, as stated in the Specification; but does not include Plant which has
not been taken over by the Employer.
“Force Majeure” is defined in Clause 19 [Force Majeure].
“Laws” means all national (or state) legislation, statutes, ordinances and other
laws, and regulations and by-laws of any legally constituted public authority.
“Performance Guarantee/Performance Bond” means the security (or
securities, if any) under Clause 5.2 [Performance Guarantee/Performance Bond].
“Site” means the places where the Permanent Works are to be executed and to
which Plant and Materials are to be delivered, and any other places as may be
specified in the Contract as forming part of the Site.
“Unforeseeable” means not reasonably foreseeable by an experienced
contractor by the date for submission of the Tender.
18
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
“Variation” means any change to the Works, which is instructed or approved as
a variation under Clause 13 [Variations and Adjustments].
2.2.
Interpretation
In the Contract, except where the context requires otherwise:
words indicating one gender include all genders;
words indicating the singular also include the plural and words indicating the
plural also include the singular;
provisions including the word “agree”, “agreed” or “agreement” require the
agreement to be recorded in writing, and
“written” or “in writing” means hand-written, type-written, printed or electronically
made, and resulting in a permanent record.
The marginal words and other headings shall not be taken into consideration in the
interpretation of these Conditions.
2.3.
Communications
Wherever these Conditions provide for the giving or issuing of approvals, certificates,
consents, determinations, notices and requests, these communications shall be:
2.3.1.
in writing and delivered by hand (against receipt), sent by mail or courier,
or transmitted using any of the agreed systems of electronic
transmission; and
2.3.2.
delivered, sent or transmitted to the address for the recipient’s
communications as stated in the Conditions of Contract.
However:
2.4.
2.3.3.
if the recipient gives notice of another address, communications shall
thereafter be delivered accordingly; and
2.3.4.
if the recipient has not stated otherwise when requesting an approval or
consent, it may be sent to the address from which the request was
issued.
Law and Language
The Contract shall be governed by the law of the country (or other jurisdiction). If there
are versions of any part of the Contract which are written in more than one language, the
version which is in the ruling language shall prevail. The language for communications
shall be English.
2.5.
Validity of Tender
19
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
Tender submittals shall remain valid for acceptance by the Employer for a period of 30
(Thirty) days from the last date of submission of Tender which period may be extended
due to unavoidable administrative reasons and after intimating to all the Tenderer. The
Tenderer shall not cancel or withdraw the Tender during this validity period.
2.6.
Priority of Documents
The documents forming the Contract are to be taken as mutually explanatory of one
another. For the purposes of interpretation, the priority of the documents shall be in
accordance with the following sequence:
a. the letter of Acceptance,
b. Articles of Agreement
c.
Pre Bid Queries
d. Preamble & Bill of Quantities
e. Technical Specification
f.
Conditions of Contract
g. Tender Drawings
h. IS Code
i.
Other Codes
If an ambiguity or discrepancy is found in the documents or conflicts between description
in 2 documents, then the following priority shall govern:
1.
Preamble & Bill of Quantities
2. Technical Specifications
3. Conditions of Contract
4. Tender Drawings
5. IS Code
6. Other codes
2.7.
Contract Agreement
The Parties shall enter into a Contract Agreement within 28 days after the Contractor
receives the Letter of Acceptance, unless they agree otherwise. The Articles of
Agreement shall be based upon the format in Appendix 2. The costs of stamp duties and
similar charges (if any) imposed by law in connection with entry into the Contract
Agreement shall be borne by the Employer.
2.8.
Assignment
20
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
Neither Party shall assign the whole or any part of the Contract or any benefit or
interest in or under the Contract. However, either Party:
2.9.
2.8.1.
may assign the whole or any part with the prior agreement of the other
Party, at the sole discretion of such other Party, and
2.8.2.
may, as security in favour of a bank or financial institution, assign its right
to any moneys due, or to become due, under the Contract.
Care and Supply of Documents
The Specification and Drawings shall be in the custody and care of the Employer. Unless
otherwise stated in the Contract, two copies of the Contract and of each subsequent
Drawing shall be supplied to the Contractor, who may make or request further copies at
the cost of the Contractor.
Each of the Contractor’s Documents shall be in the custody and care of the Contractor,
unless and until taken over by the Employer. Unless otherwise stated in the Contract, the
Contractor shall supply to the Engineer six copies of each of the Contractor’s Documents.
The Contractor shall keep, on the Site, a copy of the Contract, publications named in the
Specification, the Contractor’s Documents (if any), the Drawings and Variations and other
communications given under the Contract. The Employer’s Personnel shall have the right
of access to all these documents at all reasonable times.
If a Party becomes aware of an error or defect of a technical nature in a document which
was prepared for use in executing the Works, the Party shall promptly give notice to the
other Party of such error or defect.
2.10.
Employer‟s Use of Contractor‟s Documents
As between the Parties, the Contractor shall retain the copyright and other intellectual
property rights in the Contractor’s Documents and other design documents made by (or
on behalf of) the Contractor.
The Contractor shall be deemed (by signing the Contract) to give to the Employer a nonterminable transferable non-exclusive royalty-free licence to copy, use and communicate
the Contractor’s Documents, including making and using modifications of them. This
licence shall:
2.10.1.
apply throughout the actual or intended working life (whichever is longer)
of the relevant parts of the Works,
2.10.2.
entitle any person in proper possession of the relevant part of the Works
to copy, use and communicate the Contractor’s Documents for the
purposes of completing, operating, maintaining, altering, adjusting,
repairing and demolishing the Works, and
2.10.3.
in the case of Contractor’s Documents which are in the form of computer
21
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
programs and other software, permit their use on any computer on the
Site and other places as envisaged by the Contract, including
replacements of any computers supplied by the Contractor.
The Contractor’s Documents and other design documents made by (or on behalf
of) the Contractor shall not, without the Contractor’s consent, be used, copied or
communicated to a third party by (or on behalf of) the Employer for purposes
other than those permitted under this Sub-Clause.
2.11.
Contractor‟s Use of Employer‟s Documents
As between the Parties, the Employer shall retain the copyright and other intellectual
property rights in the Specification, the Drawings and other documents made by (or on
behalf of) the Employer. The Contractor may, at his cost, copy, use, and obtain
communication of these documents for the purposes of the Contract. They shall not,
without the Employer’s consent, be copied, used or communicated to a third party by the
Contractor, except as necessary for the purposes of the Contract.
2.12.
Confidential Details
The Contractor shall disclose all such confidential and other information as the Engineer
may reasonably require in order to verify the Contractor’s compliance with the Contract.
2.13.
Compliance with Laws
The Contractor shall, in performing the Contract, comply with applicable Laws. Unless
otherwise stated in the Particular Conditions:
2.14.
2.13.1.
The Employer shall have obtained (or shall obtain) the planning, zoning
or similar permission for the Permanent Works, and any other
permissions described in the Specification as having been (or being)
obtained by the Employer; and the Employer shall indemnify and hold
the Contractor harmless against and from the consequences of any
failure to do so; and
2.13.2.
the Contractor shall give all notices, pay all taxes, duties and fees, and
obtain all permits, licences and approvals, as required by the Laws in
relation to the execution and completion of the Works and the remedying
of any defects; and the Contractor shall indemnify and hold the Employer
harmless against and from the consequences of any failure to do so.
Joint and Several Liability
If the Contractor constitutes (under applicable Laws) a joint venture, consortium or other
unincorporated grouping of two or more persons:
2.14.1.
these persons shall be deemed to be jointly and severally liable to the
Employer for the performance of the Contract;
2.14.2.
these persons shall notify the Employer of their leader who shall have
22
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
authority to bind the Contractor and each of these persons; and
2.14.3.
3.
the Contractor shall not alter its composition or legal status without the
prior consent of the Employer.
THE EMPLOYER
3.1.
Right of Access to the Site
The Employer/ The Engineer / Employer’s Personnel or any person authorized by them
shall at all times have access to the Works and to the Site and to all workshops and
places where work is being prepared or when materials, manufactured articles or
machinery are being obtained for the Works and the Contractor shall afford every facility
for any/every assistance in or in obtaining the right to such access.
The Employer shall give the Contractor right of access to, and possession of, all parts of
the Site within the time (or times) stated in the Form to Tender. The right and possession
may not be exclusive to the Contractor. If, under the Contract, the Employer is required to
give (to the Contractor) possession of any foundation, structure, plant or means of
access, the Employer shall do so in the time and manner as required. However, the
Employer may withhold any such right or possession until the Performance Security has
been received.
3.2.
Permits, Licences or Approvals
The Employer shall provide reasonable assistance to the Contractor at the request of the
Contractor:
3.2.1.
for the Contractor’s applications for any permits, licences or approvals
required by the Laws of the Country:
3.2.1.1.1.
3.2.1.1.2.
3.2.1.1.3.
3.3.
which the Contractor is required to obtain under Clause
2.13 [Compliance with Laws],
for the delivery of Goods, including clearance through
customs, and
for the export of Contractor’s Equipment when it is
removed from the Site.
Employer‟s Personnel
The Employer shall be responsible for ensuring that the Employer’s Personnel and the
Employer’s other contractors on the Site:
3.4.
3.3.1.
co-operate with the Contractor’s efforts
3.3.2.
take actions similar to those which the Contractor is required to take
under Clause 5.10 [Safety Procedures] and under Clause 5.21
[Protection of the Environment].
Employer‟s Financial Arrangements
23
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
3.4.1.
3.5.
4.
The Employer shall submit, within 28 days after receiving any request
from the Contractor, reasonable evidence that financial arrangements
have been made and are being maintained which will enable the
Employer to pay the Contract Sum (as estimated at that time) in
accordance with Clause 14 [Contract Sum and Payment]. If the
Employer intends to make any material change to his financial
arrangements, the Employer shall give notice to the Contractor with
detailed particulars.
Employer‟s Claims
3.5.1.
If the Employer considers himself to be entitled to any payment under
any Clause of these Conditions or otherwise in connection with the
Contract, and/or to any extension of the Defects Liability Period, the
Employer or the Engineer shall give notice and particulars to the
Contractor. However, notice is not required for payments due under
Clause 5.22 [Electricity and Water], or for other services requested by
the Contractor.
3.5.2.
The notice shall be given as soon as practicable after the Employer
became aware of the event or circumstances giving rise to the claim. A
notice relating to any extension of the Defects Liability Period shall be
given before the expiry of such period
3.5.3.
The particulars shall specify the Clause or other basis of the claim, and
shall include substantiation of the amount and/or extension to which the
Employer considers himself to be entitled in connection with the
Contract. The Engineer shall then proceed in accordance with Clause
4.4 [Determinations] to agree or determine (i) the amount (if any) which
the Employer is entitled to be paid by the Contractor, and/or (ii) the
extension (if any) of the Defects Liability Period in accordance with
Clause 11.3 [Extension of Defects Liability Period].
3.5.4.
This amount may be included as a deduction in the Contract Sum and
Payment Certificates.The Employer shall only be entitled to set off
against or make any deduction from an amount certified in a Payment
Certificate, or to otherwise claim against the Contractor, in accordance
with this Clause.
THE ENGINEER
The term “Engineer" shall mean the representative of the Employer, and acting under the orders
of the Employer to inspect the works in the absence of the Employer the Contractor shall afford
the Engineer every facility and assistance for inspecting the works and materials, and for
checking and measuring, time and materials.
The Engineer or any representative of the Employer shall have power to give notice to the
Contractor or to his representative of non‑ approval of any work or materials, and such work shall
be suspended, or the use of such materials shall be discontinued until the decision of the
24
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
Employer is obtained. The works will from time to time ,be examined by the Employer the
Engineer or the other Engineer’s representative but such examination shall not in any way
exonerate the Contractor from the obligation to remedy any defects which may be found to exist
at any stage of the works or after the same is completed.
4.1.
Engineer‟s Duties and Authority
4.1.1.
The duties of the Engineer are to watch and supervise the Works and to
test and examine any materials to be used or workmanship employed in
connection with the Works. He shall have no authority to relieve the
Contractor of any of his duties or obligations under the Contract nor
except as expressly provided hereunder or elsewhere in the Contract to
order any work involving delay or any extra payment by the
Employer nor to make any variation of or in the works.
4.1.2.
The Engineer may from time to time in writing delegate to the Engineer
any of the powers and authorities vested in the Engineer and shall
furnish to the Contractor a copy of all such written delegations of powers
and authorities. Any written instruction or approval given by the
Engineer to the Contractor within the terms of such delegation (but not
otherwise) shall bind the Contractor and the Employer, as though it had
been given by the Engineer, provided always as follows:
Failure of the Engineer to disapprove any work or materials shall not prejudice
the power of the Engineer thereafter to disapprove such work or materials and to
order the pulling down removal or breaking up thereof.
If the Contractor shall be dissatisfied by reason of any decision of the Engineer's
Representative he shall be entitled to refer the matter to the Engineer who
shall thereupon confirm, reverse or vary such decision.
4.2.
Delegation by the Engineer
The Engineer may from time to time assign duties and delegate authority to
assistants,and may also revoke such assignment or delegation. These assistants may
include a resident engineer, and/or independent inspectors appointed to inspect and/or
test items of Plant and/or Materials. The assignment, delegation or revocation shall be in
writing and shall not take effect until copies have been received by both Parties.
However, unless otherwise agreed by both Parties, the Engineer shall not delegate the
authority to determine any matter in accordance with Clause 4.4 [Determinations].
Assistants shall be suitably qualified persons, who are competent to carry out these
duties and exercise this authority, and who are fluent in the language for communications
defined in Clause 2.4 [Law and Language].
Each assistant, to whom duties have been assigned or authority has been delegated,
shall only be authorised to issue instructions to the Contractor to the extent defined by
the delegation. Any approval, check, certificate, consent, examination, inspection,
instruction, notice, proposal, request, test, or similar act by an assistant, in accordance
with the delegation, shall have the same effect as though the act had been an act of the
25
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
Engineer. However:
a. any failure to disapprove any work, Plant or Materials shall not constitute
approval, and shall therefore not prejudice the right of the Engineer to reject the
work, Plant or Materials;
b. if the Contractor questions any determination or instruction of an assistant, the
Contractor may refer the matter to the Engineer, who shall promptly confirm,
reverse or vary the determination or instruction.
4.3.
Instructions of the Engineer
The Engineer may issue to the Contractor (at any time) instructions and additional or
modified Drawings which may be necessary for the execution of the Works and the
remedying of any defects, all in accordance with the Contract. The Contractor shall only
take instructions from the Engineer, or from an assistant to whom the appropriate
authority has been delegated under this Clause. If an instruction constitutes a Variation,
Clause 13 [Variations and Adjustments] shall apply.
The Contractor shall comply with the instructions given by the Engineer or delegated
assistant, on any matter related to the Contract. Whenever practicable, their instructions
shall be given in writing. If the Engineer or a delegated assistant:
1. gives an oral instruction,
2. receives a written confirmation of the instruction, from (or on behalf of) the
Contractor, within two working days after giving the instruction, and
3. does not reply by issuing a written rejection and/or instruction within two working
days after receiving the confirmation,
4.4.
Determination
Whenever these Conditions provide that the Engineer shall proceed in accordance with
this Clause 4.5 to agree or determine any matter, the Engineer shall consult with each
Party in an endeavour to reach agreement. If agreement is not achieved, the Engineer
shall make a fair determination in accordance with the Contract, taking due regard of all
relevant circumstances.
The Engineer shall give notice to both Parties of each agreement or determination, with
supporting particulars. Each Party shall give effect to each agreement or determination
unless and until revised under Clause 20 [Claims, Disputes and Arbitration].
5.
THE CONTRACTOR
5.1.
Contractor‟s General Obligations
5.1.1.
The Contractor shall Construct (to the extent specified in the Contract),
execute, (design to the extent specified in the contract) and complete the
Works in accordance with the Contract and with the Engineer’s
instructions, and shall remedy any defects in the Works.
26
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
5.1.2.
The Contractor shall provide the Plant and Contractor’s Documents
specified in the Contract, and all Contractor’s Personnel, Goods,
consumables and other things and services, whether of a temporary or
permanent nature, required in and for this design,execution, completion
and remedying of defects.
5.1.3.
The Contractor shall be responsible for the adequacy, stability and safety
of all Site operations and of all methods of construction. Except to the
extent specified in the Contract, the Contractor
shall be responsible for all Contractor’s Documents, Temporary Works, and such
design of each item of Plant and Materials as is required for the item to be in
accordance with the Contract, and
shall not otherwise be responsible for the design or specification of the
Permanent Works.
5.1.4.
The Contractor shall, whenever required by the Engineer, submit details
of the arrangements and methods which the Contractor proposes to
adopt for the execution of the Works. No significant alteration to these
arrangements and methods shall be made without this having previously
been notified to the Engineer.
5.1.5.
If the Contract specifies that the Contractor shall Construct any part of
the Permanent Works, then unless otherwise stated in the Particular
Conditions:
The Contractor shall submit to the Engineer the Contractor’s Documents for this
part in accordance with the procedures specified in the Contract;
These Contractor’s Documents shall be in accordance with the Specification and
Drawings, shall be written in the language for communications defined in Clause
2.4 [Law and Language], and shall include additional information required by the
Engineer to add to the Drawings for coordination of each Party’s designs;
The Contractor shall be responsible for this part and it shall, when the Works are
completed, be fit for such purposes for which the part is intended as are specified
in the Contract; andret
Prior to the commencement of the Tests on Completion, the Contractor shall
submit to the Engineer the “as-built” documents and operation and maintenance
manuals in accordance with the Specification and in sufficient detail for the
Employer to operate, maintain, dismantle, reassemble, adjust and repair this part
of the Works. Such part shall not be considered to be completed for the purposes
of Practical Completion under Clause 10.1 Practical Completion of the Works
and Sections] until these documents and manuals have been submitted to the
Engineer.
5.2.
Performance Guarantee/ Performance Bond
27
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
5.3.
5.4.
5.2.1.
The Contractor, within 7 days from the date of issue of LOA, shall
submit a Performance Bond from a Nationalised / Scheduled Bank in
India as Performance Bond for a sum equivalent to five percent (5%) of
the Contract value for the due performance of the Contract under the
terms of the conditions of Contract within time.
5.2.2.
The Performance Bond shall be in the form of Bank Guarantee as per
format in Appendix 3 approved by the Employer and shall remain so
deposited with the Employer and valid till the end of Defects Liability
Period.
5.2.3.
The said Performance Bond in the form of Bank Guarantee shall
indemnify the Employer against loss from defects arising from any cause
under this Contract or due to the failure of the Contractor to promptly
carry out any matters arising under this Contract.
Contractor‟s Representative
5.3.1.
The Contractor shall appoint the Contractor’s Representative and shall
give him all authority necessary to act on the Contractor’s behalf under
the Contract.
5.3.2.
Unless the Contractor’s Representative is named in the Contract, the
Contractor shall,prior to the Commencement Date, submit to the
Engineer for consent the name and particulars of the person the
Contractor proposes to appoint as Contractor’s Representative.If consent
is withheld or subsequently revoked, or if the appointed person fails to
act as Contractor’s Representative, the Contractor shall similarly submit
the name and particulars of another suitable person for such
appointment.
5.3.3.
The Contractor shall not, without the prior consent of the Engineer,
revoke the appointment of the Contractor’s Representative or appoint a
replacement.
5.3.4.
The whole time of the Contractor’s Representative shall be given to
directing the Contractor’s performance of the Contract. If the Contractor’s
Representative is to be temporarily absent from the Site during the
execution of the Works, a suitable replacement person shall be
appointed, subject to the Engineer’s prior consent, and the Engineer
shall be notified accordingly.
5.3.5.
The Contractor’s Representative may delegate any powers, functions
and authority to any competent person, and may at any time revoke the
delegation. Any delegation or revocation shall not take effect until the
Engineer has received prior notice signed by the Contractor’s
Representative, naming the person and specifying the powers, functions
and authority being delegated or revoked.
Joint Inspection
28
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
The Employer / The Engineer / Employer’s personnel shall conduct a joint inspection with
The Contractors’ authorised representative at every stage of the work, immediately upon
completion of such stage of works. The purpose of the joint inspection is to observe and
record any deviations from the specified tolerances / levels, plumb or any quality defects
or any such issues which require immediate attention / action from the Contractor to
make good or rectify such defects or observations jointly recorded. Such joint
inspections can be held at any time as deemed fit and shall be binding on the Contractor
to act upon and implement without any extra cost the directions arising out of such joint
inspections. Failure / delay in holding such joint inspections shall not absolve the
Contractor from his responsibilities to rectify any defects which may be subsequently
noticed at any time after the respective stages of work.
5.5.
Safety Procedures:
The Contractor shall exercise precaution at all times for the protection of persons and
their property. The Contractor shall install adequate safety guards and protective devices
for all equipment and machinery. The Contractor shall also provide and adequately
maintain all proper temporary walks, roads, guards, railings, lights and warning signs.
The Contractor shall comply with all applicable laws relating to safety precautions,
including the safety regulations of The Employer Representative. If The Contractor
designates other employees, its Foreman shall have the duty of prevention of accidents.
The Contractor shall institute a safety program, which includes all trades on the site.
Renovation, expansion, or remodel work of any existing building may expose workers to
lead-containing materials such as paint, flashings and pipe joints. The Contractor shall
comply with all applicable laws addressing such exposure. The Employer and The
Employer Representative may bring to the attention of The Contractor a possible
hazardous situation in the field regarding the safety of personnel on the site. The
Contractor shall be responsible for verifying that all local, state and Government
workplace safety guidelines are being observed. In no case shall this right to notify The
Contractor absolve The Contractor of its responsibility for monitoring safety conditions.
Such notification shall not imply that anyone other than The Contractor has assumed any
responsibility for field safety operations. In the event of an accident, The Contractor shall
make available to The Employer copies of its accident report to its insurance carrier. The
Contractor shall determine the cause of the accident and immediately correct any
equipment, procedure or condition contributing to the accident. The contractor shall follow
the Hand Book of Health and Safety at Work provided as part of Part 1 (C) Technical
Specifications.
5.6.
Quality Assurance
5.6.1.
The Contractor shall be fully responsible for the quality of materials and
workers skill in the project. The Contractor shall insist upon and carry out
on his own all the inspections and testing. Contractor shall maintain full
documentation Quality Control process both in-house and third party and
shall make it available to The Employer / The Engineer / Employer’s
personnel with free access. The Employer / The Engineer / Employer’s
Personnel reserve the right to insist upon their being present at special
inspections and tests performed by The Employer ’s selected
29
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
laboratories. All Third party tests / inspections shall be in the form of
written reports.
5.6.2.
5.7.
5.8.
Tenderer shall submit in his own format, checklists and quality manuals
in order to achieve quality assurance guidelines. This will include
inspection & testing and may include a Quality Assurance plan and
structural observations where applicable. All materials and installation
shall be tested in line with the BIS Codes and also Local authority
requirements. The Tenderer has to outline the methodology to be
adopted for the execution of the works for ensuring full compliance with
the entire testing and validation of materials, workmanship, services and
other installation.
Burden for Damage
5.7.1.
From the issuance of the official Notice to Proceed until formal
acceptance of the project by The Employer , The Contractor shall have
the charge and care of and shall bear the risk of damage to the project
and materials and equipment for the project. The Contractor, at its own
expense, shall promptly rebuild, repair, restore and make good all such
damage to any portion or to all of the project and materials therefore
before the acceptance of the project by The Employer except for such
damage as is proximately caused by acts of The Employer . In case of
suspension of work from any cause whatsoever, The Contractor shall be
responsible for all materials and shall properly store them, if necessary
and shall provide suitable drainage and erect temporary structures where
necessary. If The Contractor damages any property belonging to the
Employer , The Employer may, in addition to other remedies available to
The Employer , retain from the money due to The Contractor an amount
sufficient to ensure repair of the damage or an amount to contribute
towards repair of the damage. The Contractor shall be responsible for
any damage to the project and materials and equipment for the project.
5.7.2.
The Contractor shall also be responsible for handling and resolving all
potential objections or hindrances arising out of complaints etc. from
neighbours and others who may claim to be affected by the construction
activity.
Site Data
Before Tendering, the Contractor shall have visited and examined the site and satisfied
himself as to the nature of the existing roads or other means of communication and the
character of the soil and of the excavations, the correct dimensions of the work, and the
facilities for obtaining any special articles called for in the Contract Document and shall
have obtained generally his own information on all matters affecting the continuation and
progress of the works.
No extra charge made in consequence of any misunderstanding or incorrect information
on any of these points or on the grounds of insufficient description will be allowed.
30
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
Should the Contractor
after visiting the site find any discrepancies , omissions,
ambiguities or conflicts in or among the Contract Document or be in doubt as to their
meaning he shall bring, the questions to the Employer's attention not later than 48 Hours
before the pre-bid meeting, with the Employer.
5.9.
Sufficiency of the Accepted Contract Amount
The Contractor shall be deemed to:
5.10.
5.9.1.
have satisfied himself as to the correctness and sufficiency of the
Accepted Contract Amount, and
5.9.2.
have based the Accepted Contract Amount on the data, interpretations,
necessary information, inspections, examinations and satisfaction as to
all relevant matters referred to in Clause 5.13 [Site Data].
Unforeseeable Physical Conditions
If, however, during the execution of the Works adverse physical conditions (other than
weather conditions or conditions due to weather conditions or soil or groundwater
conditions) or artificial obstructions are encountered, the Contractor shall forthwith give
written notice thereof to the Engineer and if (in either case) such conditions could not in
the opinion of the Engineer have been reasonably foreseen by an experienced
contractor, then the Engineer shall certify and the Employer shall pay the additional
expense to which the Contractor shall have been put by reason of such conditions
including the proper and reasonable expenses:
a. of complying with any instruction which the Engineer may issue to the Contractor
in connection therewith and
b. of any proper reasonable measures approved by the Engineer which the
contractor may take in the absence of specific instruction from the Engineer.
c. Provided that Engineer shall not certify any additional expenses until the
same are approved by the Employer in writing.
5.11.
Rights of Way and Facilities
The Contractor shall bear all costs and charges for special and/or temporary right of-way
which he may require, including those for access to the Site. The Contractor shall also
obtain, at his risk and cost, any additional facilities outside the Site which he may require
for the purposes of the Works.
5.12.
Avoidance of Interference
The Contractor shall not interfere unnecessarily or improperly with:
1. the convenience of the public, or
2. the access to and use and occupation of all roads and footpaths, irrespective oF
31
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
whether they are public or in the possession of the Employer or of others.
5.13.
Access Route
The Contractor shall be deemed to have been satisfied as to the suitability and
availability of access routes to the Site. The Contractor shall use reasonable efforts to
prevent any road or bridge from being damaged by the Contractor’s traffic or by the
Contractor’s Personnel. These efforts shall include the proper use of appropriate vehicles
and routes.
Except as otherwise stated in these Conditions:
a. The Contractor shall (as between the Parties) be responsible for any
maintenance which may be required for his use of access routes;
b. the Contractor shall provide all necessary signs or directions along access
routes, and shall obtain any permission which may be required from the relevant
authorities for his use of routes, signs and directions
c.
The Employer shall not be responsible for any claims which may arise from the
use or otherwise of any access route,
d. The Employer does not guarantee the suitability or availability of particular
access routes, and
e. Costs due to non-suitability or non-availability, for the use required by the
Contractor, of access routes shall be borne by the Contractor.
5.14.
Transport of Goods
Except where otherwise specified, the Contractor shall at his own expense supply and
provide all the Constructional plant, Temporary Works, materials both for Temporary and
for permanent Works/Plant/Equipment, Labour (including the supervision thereof)
transport to or from the Site and in and about the Works and other things of every kind
required for the construction, completion and maintenance of the Works/Plant/
Equipment.
5.15.
Contractor‟s Equipment
The Contractor shall provide and install all necessary cranes, hoists, ladders, scaffolding,
tools, tackles, plants, dewatering equipment, shoring, strutting etc., all transport for
labour, materials and plant necessary, for the proper carrying on execution, and
completion of the work, to the satisfaction of the Employer.
5.16.
Protection of the Environment
The Contractor shall take all reasonable steps to protect the environment (both on and off
the Site) and to limit damage and nuisance to people and property resulting from
pollution, noise and other results of his operations. The Contractor shall ensure that
emissions, surface discharges and effluent from the Contractor’s activities shall not
exceed the values indicated in the Specification, and shall not exceed the values
prescribed by applicable Laws.
32
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
5.17.
Electricity and Water
The Contractor shall be responsible to supply of electricity and water required for all the
works including that of all other agencies directly engaged by him such as Direct Subcontractors etc. The Contractor shall ensure uninterrupted power and water supply at site
by receiving temporary power supply through Electricity Department after arriving with
exact demand and keeping in mind the future demands of power. Diesel generators of
required numbers also shall be arranged at appropriate places at site as a stand by
measure to meet out the demand to run the site 24x7 basis. Nothing extra shall be paid
on this account.
5.18.
Progress Reports
The Contractor shall prepare programme charts according to the Conditions of Contract,
and submit the same for approval of the Employer and for his record within two weeks
of the Acceptance of the Contract. The charts shall indicate the expected date of
commencement and completion of each of the items of the work and shall be, in a form
approved by the Engineer. The chart, shall also indicate the scheduling of samples,
Shop Drawings and approvals.
Photographs and Video Cassettes:
The Main Contractor shall take photos and videos from the locations approved by the
Employer / Employer’s Personnel to show the progress of work at regular intervals,
throughout the Construction Period, and furnish three sets of Photographs of minimum
size of 200 X 150 MM with date embossed on the Photograph and video Compact Disks
of required duration, duly indicating therein the specified number of negative / prints
affixed in albums. Each photograph, shall be marked with the description of the
photograph and location from which it was taken.
The negatives shall be dated, location labeled, and retained by the Contractor, to enable
further prints, to be obtained, as and when, required by the Employer / Employer’s
Personnel .
5.19.
Security of the Site
The Contractor shall make his own security arrangements to guard the Site and premises
at all times, at his own expense. The security arrangements shall be adequate to
maintain strict control on the movement of material and labour.The Contractor shall
extend the security arrangements to guard the material stored and/or fixed on the
premises by the Sub-Contractors.
5.20.
Protection of Adjoining Facilities
The Contractor shall protect adjoining property and nearby buildings, roads and other
facilities and improvements from dust, dirt, debris and other nuisances arising out of
Contractor’s operations. Dust shall be controlled by sprinkling or other effective methods
acceptable to The Employer . An erosion and sedimentation control program shall be
33
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
initiated, which includes measures addressing erosion caused by wind and water and
sediment in runoff from site. A regular watering program shall be initiated to adequately
control the amount of fugitive dust in accordance with applicable Law.
5.21.
Contractor‟s Operations on Site
The Contractor shall confine his operations to the Site, and to any additional areas which
may be obtained by the Contractor and agreed by the Engineer as working areas. The
Contractor shall take all necessary precautions to keep Contractor’s Equipment and
Contractor’s Personnel within the Site and these additional areas, and to keep them off
adjacent land.
During the execution of the Works, the Contractor shall keep the Site free from all
unnecessary obstruction, and shall store or dispose of any Contractor’s Equipment or
surplus materials. The Contractor shall clear away and remove from the Site any
wreckage, rubbish and Temporary Works which are no longer required.
Upon the issue of a Practical Completion Certificate, the Contractor shall clear away and
remove, from that part of the Site and Works to which the Practical Completion Certificate
refers, all Contractor’s Equipment, surplus material, wreckage, rubbish and Temporary
Works. The Contractor shall leave that part of the Site and the Works in a clean and safe
condition. However, the Contractor may retain on Site, during the Defects Liability Period,
such Goods as are required for the Contractor to fulfil obligations under the Contract.
6.
STAFF AND LABOUR
6.1.
Engagement of Staff and Labour
6.1.1.
The Contractor shall make his own arrangements for engagement of all
labour, local or otherwise, and save in so far as the Contract otherwise
provides for the transport, housing (not at the Employer’s site), feeding
and payment thereof.
6.1.2.
The Contractor shall provide on the Site to the satisfaction of the
Employer's Personnel’s an adequate supply of drinking and other water
for the use of the Contractor 's staff and work people.
6.1.3.
The Contractor shall, in all dealings with labor in his employ, have due
regard to all recognized festivals, days of rest and religious or other
customs.
6.1.4.
The Contractor shall be responsible for observance by his subcontractors of the foregoing provisions.
6.1.5.
The Contractor shall employ labour in sufficient number to maintain the
required rate of progress and of quality to ensure a workmanship of the
degree required by the Specification and to the satisfaction of the
34
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
Employer / The Engineer / Employer’s personnel. He shall be
responsible at his own cost for all recruiting, transport, welfare, sanitary
and other accommodation, provision of necessary passports or permits
for all personnel and employees required for this contract.
6.2.
6.1.6.
All workmen engaged by the Contractor shall be the Contractor’s
employees and no such workmen shall have any claim or right
whatsoever, against the Employer either during the validity of this
contract or after its completion/termination.
6.1.7.
The Contractor will bear the cost of any charges levied by the local
Authority for the execution of such work by the local Authority on his
behalf.
Rates of Wages and Conditions of Labour
The Contractor shall pay rates of wages, and observe conditions of labour, which are not
lower than those established for the trade or industry where the work is carried out. If no
established rates or conditions are applicable, the Contractor shall pay rates of wages
and observe conditions which are not lower than the general level of wages and
conditions observed locally by employers whose trade or industry is similar to that of the
Contractor.
6.3.
Persons in the Service of Employer
The Contractor shall not recruit, or attempt to recruit, staff and labour from amongst the
Employer’s Personnel.
6.4.
6.5.
Labour Laws
6.4.1.
The Contractor shall remain liable for the payment of all wages or other
monies to his workmen, or employees under the Payment of Wages Act,
1936, Minimum Wages Act, 1948, Employees liability Act, 1936,
Workmen's Compensation Act, 1923 or any other Act or enactments
relating thereto and rules framed thereunder from time to time.
6.4.2.
The Contractor shall comply fully with local laws dealing with the
employment of persons including the Indian Employment of Children
Act, 1938, the Indian Workmen's Compensation Act, 1923, the Factories
Act, 1948, the Minimum Wages Act, 1948, the Employees State
Insurance Act, 1948, Contract Labour (Regulations and Abolition) Act,
1970, Employees Provided Funds & Miscellaneous Provisions Act, 1952
and any statutory amendment or re-enactment thereof for the time being
in force.
6.4.3.
The Contractor may employ female labour if he chooses but he shall not
employ in connection with the works any person who has not completed
the minimum age (18 – eighteen) as per law locally applicable.
Working Hours
35
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
The Contractor shall work only on and during the hours of a working day unless he
obtains the prior written approval of the Employer /Employer’s Personnel to do otherwise.
If such approval is given, no liability in respect of any excess cost arising therefrom shall
be incurred by the Employer.
6.6.
Facilities for Staff and Labour
6.6.1.
The Contractor, during the progress of the Works, shall provide, erect
and maintain at his own expense and to approved standards and
scales all necessary temporary sanitary accommodation required
for his workmen on the Site in connection with the execution of the
Works. The planning, sitting and erection of these buildings shall be
approved by the Employer / Employer’s Personnel and the whole of
such temporary accommodation shall, at all times during the progress of
the Works, be kept tidy and in a clean and sanitary condition to the
entire satisfaction of the Employer / Employer’s Personnel and at the
Contractor 's expense. The Contractor shall conform to the sanitary
requirement of local Medical and Health authorities, and at all times
adopt such precautions as may be necessary to prevent soil pollution of
the Site.
6.6.2.
The Contractor shall, at his expense, conform to all anti-malarial
instructions given to him by the Employer / Employer’s Personnel or by
any local authority including the filling up of borrow pits.
6.6.3.
The Contractor shall, at his own expense, carry out all instructions
issued to him by the to effect a proper disposal of night soil and other
conservancy work in respect of the Contractor’s workmen or employees
on the Site.He shall also conform to the sanitary requirements of the
Local Medical and Health Authorities.
6.6.4.
The Contractor shall provide and maintain upon the Works sufficient,
proper and efficient life-saving appliances and first-aid equipment to the
approval of the Employer / Employer’s Personnel and in accordance
with the requirements of I.L.O. Convention No. 62. The appliances and
equipment shall be available for use at all times.
6.6.5.
If the Site is within an existing industrial establishment belonging to the
Employer, the Contractor, Subcontractors and their the Employers shall
strictly comply with the Employer's regulations in regard to ingress,
egress, traffic, security and conduct for the establishment. The
Contractor shall be responsible for observance by his sub-contractors
of the foregoing provisions.
6.6.6.
In the event of any outbreak of illness of an epidemic nature, the
Contractor shall comply with and carry out such regulations, orders and
requirements as may be made by the Government or the local medical
or sanitary authorities for the purpose of dealing with and overcoming
the same.
36
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
6.7.
Health and Safety
The Contractor shall at all times take all reasonable precautions to maintain the health
and safety of the Contractor’s Personnel. In collaboration with local health authorities,the
Contractor shall ensure that medical staff, first aid facilities, sick bay and ambulance
service are available at all times at the Site and at any accommodation for Contractor’s
and Employer’s Personnel, and that suitable arrangements are made for all necessary
welfare and hygiene requirements and for the prevention of epidemics.
6.7.1.
Safety Code and Safety Rules:
A. First Aid Facility shall be maintained in a readily accessible place with first aid
appliances including adequate supply of sterilised dressings and cotton wool.
B. An injured person shall be taken to a public hospital without loss of time, in cases
where the injury necessitates hospitalisation.
C. Suitable and strong scaffolds should be provided for workmen for all works that
cannot safely be done from ground.
D. No portable single ladder shall be over 8 meters in length. The width between the
side rails shall not be less than 30 cm. (clear) and the distance between two
adjacent rungs shall not be more than 30cm. When a ladder is used an extra
mazdoor shall be engaged for holding the ladder.
E. The excavation material shall not be placed within 1.5 metres of the edge of the
trench or half of the depth of trench whichever is more. All trenches and
excavations shall be provided with necessary fencing and lighting.
F. Every opening in the floor of a building or in a working platform be provided with
suitable means to prevent the fall of persons or materials by providing suitable
fencing or railing whose minimum height shall be one metre.
G. No floor, roof or other part of the structure shall be so overloaded with debris or
materials as to render it unsafe.
H. Workers employed on mixing and handling material such as asphalt, cement
mortar or concrete and lime mortar shall be provided with protective footwear and
rubber hand gloves.
I.
Those engaged in welding works should be provided with welder's protective
eyeshields and gloves. All persons at site shall wear shoes and protective safety
helmets approved for construction sites.
J.
No paint containing lead or lead products shall be used except in the form of
paste or readymade paint.
K. Suitable face masks should be supplied for use by the workers when the paint
is applied in the form of spray or surface having lead paint dry rubbed and
scrapped.
L. Overalls shall be supplied by the Contractor to the painters and adequate
facilities shall be provided to enable the working painters to wash during the
period of cessation of work.
37
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
M. Hoisting machines and tackle used in the works, including their attachments,
anchorage and supports shall be in perfect condition.
N. The ropes used in hoisting or lowering material or as a means of suspension
shall be of durable quality and adequate strength and free from defects.
O. The safety features like nets, canvas sheets etc. shall be provided while men are
working at heights.
6.8.
Contractor‟s Superintendence
Throughout the execution of the Works, and as long thereafter as is necessary to fulfil the
Contractor’s obligations, the Contractor shall provide all necessary superintendence to
plan, arrange, direct, manage, inspect and test the work.
Superintendence shall be given by a sufficient number of persons having adequate
knowledge of the language for communications (defined in Clause 2.4 [Law and
Language]) and of the operations to be carried out (including the methods and
techniques required, the hazards likely to be encountered and methods of preventing
accidents), for the satisfactory and safe execution of the Works.
6.9.
Contractor‟s Personnel
The Contractor’s Personnel shall be appropriately qualified, skilled and experienced in
their respective trades or occupations. The Engineer may require the Contractor to
remove (or cause to be removed) any person employed on the Site or Works, including
the Contractor’s Representative if applicable, who:
1. persists in any misconduct or lack of care,
2. carries out duties incompetently or negligently,
3. fails to conform with any provisions of the Contract, or
4. persists in any conduct which is prejudicial to safety, health, or the protection of
the environment.
6.10.
Records of Contractor‟s Personnel and Equipment
The Contractor shall submit, to the Engineer, details showing the number of each class of
Contractor’s Personnel and of each type of Contractor’s Equipment on the Site. Details
shall be submitted each calendar month, in a form approved by the Engineer, until the
Contractor has completed all work which is known to be outstanding at the completion
date stated in the Practical Completion Certificate for the Works.
6.11.
Disorderly Conduct:
6.11.1.
The Contractor shall at all times take all reasonable precautions to
prevent any unlawful, riotous or disorderly conduct by or amongst his
employees and for the preservation of peace and protection of persons
and property in the neighbourhood of the Works against the same.
38
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
6.11.2.
7.
The Contractor will not at any time do, cause or permit any
nuisance on the Site or adjoining areas or do anything which shall cause
unnecessary disturbance or inconvenience to the Employers, tenants or
occupiers of other properties near the Site and to the Authorities or to the
public generally and will secure the efficient protection of all land and sea
areas against pollution.
PLANT, MATERIALS AND WORKMANSHIP
7.1.
Manner of Execution
Except where otherwise specified, the Contractor shall at his own expense supply and
provide all the Constructional plant, Temporary Works, materials both for Temporary and
for permanent Works/Plant/Equipment, Labour (including the supervision thereof)
transport to or from the Site and in and about the Works and other things of every kind
required for the construction, completion and maintenance of the Works/Plant/
Equipment.
7.2.
Samples
The Contractor shall submit the following samples of Materials, and relevant information,
to the Engineer for consent prior to using the Materials in or for the Works:
1. manufacturer’s standard samples of Materials and samples specified in the
Contract, all at the Contractor’s cost, and
2. additional samples instructed by the Engineer as a Variation.
Each sample shall be labelled as to origin and intended use in the Works.
7.3.
Inspection
The Contractor shall inspect and examine the site and its surroundings and shall satisfy
himself before submitting his tender as to the nature of the ground and sub soil and form
and nature of the site, the quantities and nature of the work and materials necessary for
the completion of the Works and the means of access to the site, the accommodation he
may require, & in general, shall himself obtain all necessary information as to risk
contingencies and other circumstances which may influence or affect his tender.
7.4.
Testing
All materials and workmanship shall be of the respective kinds described in the Contract
and in accordance with the Engineer's instructions and shall be subjected from time to
time to such tests as the Engineer may direct at the place of manufacture or
fabrication or on the Site or at all or any of such places. The Contractor shall provide
adequate samples and materials as are normally required for examining measuring and
testing any work and the quality, weight or quantity of any materials through a third party
testing agent. before incorporation in the Works
as required by the Engineer or
Employer.
7.5.
Rejection
If, as a result of an examination, inspection, measurement or testing, any Plant, Materials
39
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
or workmanship is found to be defective or otherwise not in accordance with the Contract,
The Employer / The Engineer / Employer’s personnel may reject the Plant, Materials or
workmanship by giving notice to The Contractor , with reasons. The Contractor shall
then promptly make good the defect and ensure that the rejected item complies with the
Contract. If The Employer / The Engineer / Employer’s personnel require this Plant,
Materials or workmanship to be re tested, the tests shall be repeated under the same
terms and conditions. If the rejection and retesting cause the TheEmployer to incur
additional costs, The Contractor shall be subject to penalty.
7.6.
Remedial Work
Notwithstanding any previous test or certification, The Employer / The Engineer /
Employer’s personnel may instruct The Contractor to:
7.6.1.
remove from the Site and replace any Plant or Materials which is not in
accordance with the Contract,
7.6.2.
remove and re-execute any other work which is not in accordance with
the Contract, and
7.6.3.
Execute any work which is urgently required for the safety of the Works,
whether because of an accident, unforeseeable event or otherwise.
The Contractor shall comply with the instruction within a reasonable time, which shall be
the time (if any) specified in the instruction.
7.7.
Employership of Plant and Materials:
Each item of Plant and Materials shall, to the extent consistent with the Laws of the
Country, become the property of the Employer at whichever is the earlier of the following
times, free from liens and other encumbrances:
a. when it is delivered to the Site;
b. when the Contractor is entitled to payment of the value of the Plant and Materials
under Clause 16.3 [Payment for Plant and Materials in Event of Suspension.
7.8.
Storage of Materials
The Contractor shall provide, erect and maintain proper shed for the storage and
protection of the materials etc. and also for the execution of Work which may be
prepared on the Site. Sheds used for the storage of cement, lime and other perishable
materials shall have raised floors.All petroleum, explosives and flammable materials
shall be stored in fire-proof buildings and precautions taken with regard to siting and fire
risks.
7.9.
Temporary Hoardings and Safety Netting
The site is to be enclosed by a hoarding (with gates) and painted on all exposed
surfaces in patterns and colours to the approval of the Employer / Employer’s Personnel.
Provide and maintain all other necessary temporary fencing, hoarding, gates, fans,
planked footways, guard rails, gantries, safety netting, warning lights and notices for the
40
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
proper execution of the Works, the security of the Site, the protection of the public and
the occupants of any adjoining premises and for meeting the requirements of the Local
Authority Alter, shift and adopt from time to time as necessary and clear away on
completion.
7.10.
7.11.
Pollution and Site Hygiene
7.10.1.
Mechanical plant, equipment, etc. which emits smoke, fumes or other
obnoxious gases will not be allowed on the site
7.10.2.
Provide and maintain temporary channels, drains and the like for
keeping the Site clear of water.
7.10.3.
Take all reasonable precautions to ensure the efficient protection of all
streams and waterways against pollution arising out of or by reason of
the execution of the Works.
7.10.4.
The Contractor shall not dump unwanted building debris, chemicals, any
noxious or polluting matter on any vacant plot of land, roadside or drains
thereby causing chokage leading to mosquito breeding or causing
contamination of the Site or the drainage system.
7.10.5.
Comply with and pay all charges levied by any Government or Public
Authority with jurisdiction on matters of pollution or site hygiene
Fire Protection during Construction
Provide and keep in working order adequate fire fighting equipment for emergency use.
7.12.
Royalties
Unless otherwise stated in the Specification, the Contractor shall pay all royalties, rents
and other payments for:
1. Natural Materials obtained from outside the Site, and
2. the disposal of material from demolitions and excavations and of other surplus
material (whether natural or man-made), except to the extent that disposal areas
within the Site are specified in the Contract.
8.
COMMENCEMENT, DELAYS AND SUSPENSION
8.1.
Commencement of Works
The LOA (letter of acceptance) shall be issued to the successful tenderer within 15 days
from the Date of opening the Financial Tender (Part 2). The Agreement shall be signed
within 28 days from the date of LOA, unless otherwise agreed. The Contractor shall
commence the Works from the Date of signing of the Agreement. Thereafter the
Contractor shall proceed with due diligence, without delay, and in accordance with the
programme or any revised or modified programme of the Works. Time will be the
essence of Contract and time for Completion shall run from the date the Contractor is to
commence the Works under this Clause.
The Contractor shall not commence the construction, manufacture or installation of the
41
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
Works or of any part of the Works unless and until the Engineer has endorsed the
relevant Working Drawings in accordance with the Employer's Requirements.
8.2.
Period of Completion
The Contractor shall complete the whole of the Works, and each Section (if any), within
the “Period of Completion”3 months from the date of issue of LOA.
a. achieving the passing of the Tests on Completion, and
b. completing all work which is stated in the Contract as being required for the
Works or Section to be considered to be completed for the purposes of Practical
Completion under Clause 10.1 [Practical Completion of the Works and Sections].
8.3.
Programme
The Contractor shall submit a detailed time programme to the Engineer within 28 days
after receiving the notice under Clause 8.1 [Commencement of Works]. The Contractor
shall also submit a revised programme whenever the previous programme is inconsistent
with actual progress or with the Contractor’s obligations. Each programme shall include:
a. the order in which the Contractor intends to carry out the Works, including the
anticipated timing of each stage of design (if any), Contractor’s Documents,
procurement, manufacture of Plant, delivery to Site, construction, erection and
testing,
b. each of these stages for work by each nominated Subcontractor
c.
the sequence and timing of inspections and tests specified in the Contract and
d. a supporting report which includes:
i.
a general description of the methods which the Contractor intends to
adopt, and of the major stages, in the execution of the Works, and
ii.
details showing the Contractor’s reasonable estimate of the number of
each class of Contractor’s Personnel and of each type of Contractor’s
Equipment, required on the Site for each major stage.
Unless the Engineer, within 21 days after receiving a programme, gives notice to the
Contractor stating the extent to which it does not comply with the Contract, the Contractor
shall proceed in accordance with the programme, subject to his other obligations under
the Contract. The Employer’s Personnel shall be entitled to rely upon the programme
when planning their activities.
The Contractor shall promptly give notice to the Engineer of specific probable future
events or circumstances which may adversely affect the work, increase the Contract Sum
or delay the execution of the Works. The Engineer may require the Contractor to submit
an estimate of the anticipated effect of the future event or circumstances, and/or a
proposal under Clause 13.3 [Variation Procedure].
If, at any time, the Engineer gives notice to the Contractor that a programme fails (to the
42
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
extent stated) to comply with the Contract or to be consistent with actual progress and
the Contractor’s stated intentions, the Contractor shall submit a revised programme to the
Engineer in accordance with this Sub-Clause.
8.4.
Delays
In case of delay on the part of the Contractor, the Contractor shall be liable to pay
liquidated damages and any other compensation for the damages suffered by the
Employer as per clause 8.6 (Liquidated Damages). This is without prejudice to the right of
the Employer to rescind the Contract.
Failure or delay by the Employer or the Engineer, to hand over to the Contractor the Site
necessary for execution of Works, or any part of the Works or to give necessary notice to
commence the works, or to provide necessary Drawings or instructions or clarifications or
to supply any material, plant or machinery, which under the Contract is the responsibility
of the Employer shall in no way affect or vitiate the Contract or alter the character thereof;
or entitle the Contractor to damages or compensation thereof but in any such case, the
Engineer shall extend the time period for the completion of the Contract as in his opinion
is / are reasonable.
8.5.
Extension of Time for Completion
8.5.1.
Extension of time
The Contractor may apply for an extension of the Time for Completion, if the
Work is or will be delayed either before or after the Time for Completion by any of
the following causes:
a. "Force Majeure" referred to in Clause 19
b. The Contractor's work held up for not being given possession of or
access to the Site in accordance with the Contract
c.
Instruction of the Engineer to suspend the Works and the Contractor not
being in default as to reasons of suspension.
d. Acts or omissions of other Designated Contractors in executing, work not
forming part of this Contract and on whose performance, the
performance of the Contractor necessarily depends.
e. Any act of prevention or Breach of Contract by the Employer and not
mentioned in this Clause
f.
Any order of Court restraining the performance of the Contract in full or in
any part thereof
g. Any other event or occurrence which, according to the Employer is not
due to the Contractor's failure or fault, and is beyond his control without
Employer being responsible for the same.
h. An Employer's Variation
43
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
However, the Contractor shall not be entitled to any extension of time where the
instructions or acts of the Employer or the Engineer are necessitated by or
intended to cure any default of or breach of Contract by the Contractor or where
any delay is due to
i.
the failure of SubContractor to commence or to carry out work in due
time,
ii.
non-availability, or shortage of Contractor's equipment, labour, utility
services, Plant and Materials,
iii.
Inclement weather conditions, and
iv.
the Contractor not fulfilling his obligations under Clause 5.1.
If the Contractor considers himself to be entitled to an extension of time for
Completion, he shall give notice to the Engineer of such intention as soon as
Possible and in any event within 28 days of the start of the event giving rise to
the delay and full and final supporting details of his application within 21 days of
the last day of delay, together with any notice required by the Contract and
relevant to such Clause.
The Engineer shall proceed in accordance with the Conditions of the Contract to
agree or determine either prospectively or retrospectively such extension of the
Time for Completion as may be due. The Engineer shall notify the Contractor
accordingly. The extension of time including that of key date shall not entitle the
Contractor to retain the advance.
8.6.
Rate of Progress
The whole of the materials plant and labour to be provided by the Contractor under
Clause 5 hereof and the mode, manner and speed of execution and maintenance of the
Works are to be of a kind and conducted in a manner to the satisfaction of the Engineer.
Should the rate of progress of the Works or any part thereof be at any time in the opinion
of the Engineer too slow to ensure the completion of the Works by the prescribed time or
extended time for completion the Engineer shall so notify the Contractor in writing and the
Contractor shall thereupon take such steps as the Contractor may think necessary and
the Engineer may approve to expedite progress so as to complete the Works by the
prescribed time or extended time for completion. The Employer shall not bear any extra
cost that may be incurred by the Contractor in this regard. Any additional cost incurred by
the Engineer or Employer due to extended hours of work shall be borne by the
contractor.
All work at night shall be carried out without unreasonable noise and disturbance. The
contractor shall indemnify the Employer from and against any liability for damages on
account of noise or other disturbance created while or in carrying out the work and
from and against all claims, demands, proceedings, costs, charges and expenses
whatsoever in regard or in relation to such liability.
If any steps taken by the Contractor in meeting his obligations under this Clause cause
the Employer to incur additional costs, such costs shall be recoverable from the
Contractor by the Employer and shall be deducted by the Employer from any sum due, or
44
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
to become due, to the Contractor.
8.7.
Liquidated Damages
If the Contractor fails to complete the works within the period of completion specified in
Form of Tender, and the Employer certifies in writing that in his opinion the same ought,
reasonably so, to have been completed, the Contractor shall pay or allow to the Employer
a sum calculated at the rate stated in the Form of Tender as agreed Liquidated damages
(not as a penalty) for the period during which the said work, shall so remain or have
remained incomplete. The Employer may deduct such damages from any monies
otherwise payable to the Contractor under this Contract.
The total amount of liquidated damages in respect of the Works in all stages shall,
however, not exceed the limit of liquidated damages stated in the Form of Tender.
The Tenderers are required to submit with the Tender a preliminary Bar Chart / Pert
Chart showing activities with corresponding resource allocation and time planned for
various activities to achieve a coordinated completion as per the specified completion
period, taking into account all local weather, site and other, prevailing conditions. The
progress of work will be constantly monitored by the Employer and The Engineer. Time
is the essence of the contract and the project is time bound.
On award of work, the successful Tenderer, within 10 (ten) days, shall in consultation
with the Employer and Engineer produce a detailed and working programme indicating
physical progress of work on a weekly basis. Upon acceptance of the W orking
Programme, by the Employer and Engineer the successful Tenderer shall strive and
maintain the planned progress most diligently.
The payment or deduction of such damages shall not relieve the Contractor from his
obligations to complete the Works or from any other of his duties, obligations or
responsibilities under the Contract.
The Contractor shall use and continue to use his best endeavours to avoid or reduce
further delay to the Works, or any relevant Stages.
At any time after the Employer has become entitled to liquidated damages, the Engineer
may give notice to the Contractor, requiring the Contractor to complete the Works within
a specified reasonable time. Such action shall not Prejudice the Employer’s Entitlement
to recovery of liquidated damages, under this Clause and to terminate under Clause 15.2
The decision of the Engineer as to the compensation payable by the Contractor under
this Clause shall be final and binding.
If on the expiry of agreed contract period, the work remains incomplete, liquidated
damages (not as penalty) will be imposed on the Contractor as stipulated in the first part
of this condition.
Beyond the stipulated period / extended period of completion,the contractor shall, without
prejudice to anyother right,the contractor shall be liable to pay compensation at 2% per
month of delay to be computed on daily basis for having stipulated time of completion
morethan 6 months.The total amount of compensation for delay to be paid under this
condition shall not exceed 10% of the tendered value of the work.
9.
TESTS ON COMPLETION
9.1.
Contractor‟s Obligations:
45
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
The Contractor shall carry out the Tests on Completion in accordance with this Clause
and Clause 7.4 [Testing], after providing the documents in accordance with Clause 5.1
[Contractor’s General Obligations].
The Contractor shall give to the Engineer not less than 21 days’ notice of the date after
which the Contractor will be ready to carry out each of the Tests on Completion. Unless
otherwise agreed, Tests on Completion shall be carried out within 14 days after this date,
on such day or days as the Engineer shall instruct.
9.2.
Delayed Tests:
If the Tests on Completion are being unduly delayed by the Employer, Clause 7.4
[Testing] and/or Clause 10.3 [Interference with Tests on Completion] shall be applicable.
If the Tests on Completion are being unduly delayed by the Contractor, the Engineer may
by notice require the Contractor to carry out the Tests within 21 days after receiving the
notice. The Contractor shall carry out the Tests on such day or days within that period as
the Contractor may fix and of which he shall give notice to the Engineer.
If the Contractor fails to carry out the Tests on Completion within the period of 21 days,
the Employer’s Personnel may proceed with the Tests at the risk and cost of the
Contractor. The Tests on Completion shall then be deemed to have been carried out in
the presence of the Contractor and the results of the Tests shall be accepted as
accurate.
9.3.
Retesting
If the Works, or a Section, fail to pass the Tests on Completion, Clause 7.5 [Rejection]
shall apply, and the Engineer or the Contractor may require the failed Tests, and Tests
on Completion on any related work, to be repeated under the same terms and conditions.
9.4.
Failure to Pass Tests on Completion
If the Works, or a Section, fail to pass the Tests on Completion repeated under Clause
9.3 [Retesting], the Engineer shall be entitled to:
a. order further repetition of Tests on Completion under Clause 9.3(Retesting);
b. if the failure deprives the Employer of substantially the whole benefit of the
Works or Section, reject the Works or Section (as the case may be), in which
event the Employer shall have the same remedies as are provided in Clause
11.4 [Failure to Remedy Defects]; or
c.
10.
issue a Taking-Over Certificate, if the Employer so requests.
PRACTICAL COMPLETION and PRACTICAL COMPLETION CERTIFICATE
10.1.
Practical Completion of the Works and Sections
10.1.1.
The Contractor shall complete the whole of the Works, and each
Section (if any), within the Time for Completion for the Works or Section
46
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
(as the case may be), including:
10.1.2.
Achieving the passing of the Tests on Completion, and
10.1.3.
Completing all work which is stated in the Contract as being required for
the Works or Section to be considered to be completed for the purposes
of Practical Completion.
10.1.4.
As soon as, in the opinion of the Employer’s Personnel / the Employer /
the Engineer, the Works/Plant/Equipment shall have been completed
and shall have satisfactorily passed any final test that may be
prescribed by the Contract, the Engineer shall issue a Practical
Certificate of Completion in respect of the Works/Plant/Equipment and
the Defects liability period shall commence from the date of such
certificate.
10.1.5.
Provided that a Practical Completion Certificate given in accordance
with the foregoing provisions of any part of the Works occupied and
used as aforesaid shall not be deemed to certify completion of any
ground or surfaces requiring reinstatement unless such certificate shall
expressly so state.
10.1.6.
The Contractor may apply by notice to the Employer’s Personnel / the
Employer / the Engineer for a Practical Completion Certificate not earlier
than 14 days before the Works will, in the Contractor’s opinion, be
complete and ready for Practical Completion. The Employer’s Personnel
/ the Employer / the Engineer shall, within 28 days after receiving the
Contractor’s application:
Issue the Practical Completion Certificate to the Contractor, stating the date on
which the Works or Section were completed in accordance with the Contract,
except for any minor outstanding work and defects which will not substantially
affect the use of the Works or Section for their intended purpose (either until or
whilst this work is completed and these defects are remedied).
or
Reject the application, giving reasons and specifying the work required to be
done by the Contractor to enable the Practical Completion Certificate to be
issued. The Contractor shall then complete this work before issuing a further
notice.
10.1.7.
If at any time or times before Practical completion of the work the
Employer with the consent of the Contractor shall take possession of
any part or parts of the same as may be needed by the the Employer on
any exigencies then notwithstanding anything expressed or implied
elsewhere in this Contract. Such part or parts shall not be deemed to be
practically complete. Practical completion of such part or parts shall be
considered for the purpose of Practical Completion only and all
47
Chennai Metro Rail Ltd,
Conditions of Contract for Car Shelter works
provisions under this contract shall be complied with till the entire work
is completed and Employer’s Personnel / the Employer / the Engineer’s
Certificate issued to that effect.
10.2.
Practical Completion of Parts of the Works
The Engineer may, at the sole discretion of the Employer, issue a Practical Completion
Certificate for any part of the Permanent Works.
The Employer shall not use any part of the Works (other than as a temporary measure
which is either specified in the Contract or agreed by both Parties) unless and until the
Engineer has issued a Practical Completion Certificate for this part. However, if the
Employer does use any part of the Works before the Practical Completion Certificate is
issued:
a. the part which is used shall be deemed to have been taken over as from the date
on which it is used,
b. the Contractor shall cease to be liable for the care of such part as from this date,
when responsibility shall pass to the Employer, and
c.
if requested by the Contractor, the Engineer shall issue a Practical Completion
Certificate for this part.
After the Engineer has issued a Practical Completion Certificate for a part of the Works,
the Contractor shall be given the earliest opportunity to take such steps as may be
necessary to carry out any outstanding Tests on Completion. The Contractor shall carry
out these Tests on Completion as soon as practicable before the expiry date of the
relevant Defects Liability Period.
If the Contractor incurs Cost as a result of the Employer Practical Completion and/or
using a part of the Works, other than such use as is specified in the Contract or agreed
by the Contractor, the Contractor shall (i) give notice to the Engineer and (ii) be entitled
subject to Clause 20.1 [Contractor’s Claims] to payment of any such Cost plus
reasonable profit, which shall be included in the Contract Sum. After receiving this notice,
the Engineer shall proceed in accordance with Clause 4.4 [Determinations] to agree or
determine this Cost and profit.
If a Practical Completion Certificate has been issued for a part of the Works (other than a
Section), the delay damages thereafter for completion of the remaining of the Works shall
be reduced. Similarly, the delay damages for the remaining of the Section (if any) in
which this part is included shall also be reduced. For any period of delay after the date
stated in this Practical Completion Certificate, the proportional reduction in these delay
damages shall be calculated as the proportion which the value of the part so certified
bears to the value of the Works or Section (as the case may be) as a whole. The
Engineer shall proceed in accordance with Clause 4.4 [Determinations] to agree or
determine these proportions. The provisions of this paragraph shall only apply to the daily
rate of delay damages under Clause 8.7 [Delay Damages], and shall not affect the
maximum amount of these damages.
48
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
10.3.
Interference with Tests on Completion
If the Contractor is prevented, for more than 14 days, from carrying out the Tests on
Completion by a cause for which the Employer is responsible, the Employer shall be
deemed to have taken over the Works or Section (as the case may be) on the date when
the Tests on Completion would otherwise have been completed.
10.4.
Surfaces Requiring Reinstatement
Except as otherwise stated in a Practical Completion Certificate, a certificate for a
Section or part of the Works shall not be deemed to certify completion of any ground or
other surfaces requiring reinstatement.
11.
DEFECTS LIABILITY
i. When in the opinion of The Employer, "Practical Completion" of the Works is achieved,
it shall forthwith issue a certificate to that effect and "Practical Completion" of Works
shall be deemed for all the purposes of this Contract to have taken place on the day
stated in such certificate.
ii. The Defects Liability Period shall be a period of 180 days (one hundred eighty
Days) commencing upon the Date of Issue of Practical Completion Certificate.
iii. In case any defects in the work due to bad materials and/or equipment, and/or bad
workmanship develop in the work before the expiry of the Defects Liability Period, the
Contractor, on notification by The Employer, shall rectify or remedy the defects at their
own cost and shall make their own arrangements to provide materials and/or
equipment, labour, and any other appliances required in this regard. In case, even on
due notification by The Employer, the Contractor fails to rectify or remedy the defects,
The Employer shall have the right to get this done and recover the cost incurred by
deductions from any amounts due to the Contractor including invoking the Retention
Money Bank Guarantee, in case this cost is within the value of the retention amount,
and if not, the Contractor shall be liable to pay to The Employer the balance amount.
iv. The Employer shall be entitled to an extension of the Defects Liability Period for the
Works or a Section if and to the extent that the Works, Section or a major item of Plant
(as the case may be, and after Practical Completion) cannot be used for the purposes
for which they are intended by reason of a defect or damage.
v. If the defect or damage cannot be remedied expeditiously on the Site and the
Employer gives consent, the Contractor may remove from the Site for the purposes of
repair such items of Plant as are defective or damaged. This consent may require The
Contractor to increase the amount of the Retention by the full replacement cost of
these items, or to provide other appropriate security.
11.1.
Completion of Outstanding Work and Remedying Defects
In order that the Works and Contractor’s Documents, and each Section, shall be in the
condition required by the Contract (fair wear and tear excepted) by the expiry date of the
49
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
relevant Defects Liability Period or as soon as practicable thereafter, the Contractor shall:
1. complete any work which is outstanding on the date stated in a Practical
Completion Certificate, within such reasonable time as is instructed by the
Engineer, and
2. Execute all work required to remedy defects or damage, as may be notified by
(or on behalf of) the Employer on or before the expiry date of the Defects Liability
Period for the Works or Section (as the case may be).
11.2.
Cost of Remedying Defects
All work referred to in Clause 11.1 [Completion of Outstanding Work and Remedying
Defects] shall be executed at the risk and cost of the Contractor, if and to the extent that
the work is attributable to:
1. any design for which the Contractor is responsible,
2. Plant, Materials or workmanship not being in accordance with the Contract, or
3. failure by the Contractor to comply with any other obligation.
11.3.
Extension of Defects Liability Period
The Employer shall be entitled to an extension of the Defects Liability Period for the
Works or a Section if and to the extent that the Works, Section or a major item of Plant
(as the case may be, and after Practical Completion) cannot be used for the purposes for
which they are intended by reason of a defect or damage.
11.4.
Failure to Remedy Defects
In case any defects in the work due to bad materials and/or equipment, and/or bad
workmanship develop in the work before the expiry of the Defects Liability Period, the
Contractor, on notification by the Employer, shall rectify or remedy the defects at their
own cost and shall make their own arrangements to provide materials and/or equipment,
labour, and any other appliances required in this regard. In case, even on due notification
by the Employer, the Contract or fails to rectify or remedy the defects, the Employer shall
have the right to get this done and recover the cost incurred by deductions from any
amounts due to the Contractor including invoking the Retention Money Bank Guarantee,
in case this cost is within the value of the retention amount, and if not, the Contractor
shall be liable to pay to the Employer the balance amount.
11.5.
Removal of Defective Work
If the defect or damage cannot be remedied expeditiously on the Site and the employer
gives consent, The Contractor may remove from the Site for the purposes of repair such
items of Plant as are defective or damaged. This consent may require The Contractor to
increase the amount of the Retention by the full replacement cost of these items, or to
provide other appropriate security.
11.6.
Further Tests
50
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
If the work of remedying of any defect or damage may affect the performance of the
Works, the Engineer may require the repetition of any of the tests described in the
Contract. The requirement shall be made by notice within 28 days after the defect or
damage is remedied.
11.7.
Right of Access
Until the Practical Completion Certificate has been issued, the Contractor shall have such
right of access to the Works as is reasonably required in order to comply with this Clause,
except as may be inconsistent with the Employer’s reasonable security restrictions.
11.8.
Contractor to Search
The Contractor shall, if required by the Engineer, search for the cause of any defect,
under the direction of the Engineer. Unless the defect is to be remedied at the cost of the
Contractor under Clause 11.2 [Cost of Remedying Defects], the Cost of the search plus
reasonable profit shall be agreed or determined by the Engineer in accordance with
Clause 4.4 [Determinations] and shall be included in the Contract Sum.
11.9.
Unfulfilled Obligations
After the completion of the defects liability period, each Party shall remain liable for the
fulfilment of any obligation which remains unperformed at that time. For the purposes of
determining the nature and extent of unperformed obligations, the Contract shall be
deemed to remain in force.
11.10.
Clearance of Site
Upon receiving the Practical completion Certificate, The Contractor shall remove any
remaining Contractor’s Equipment, surplus material, wreckage, rubbish and Temporary
Works from the Site. If all these items have not been removed within 28 days after the
issue of Practical Completion Certificate, the Employer may sell or otherwise dispose of
any remaining items. The Employer shall be entitled to be paid the costs incurred in
connection with, or attributable to, such sale or disposal and restoring the Site.
12.
MEASUREMENT AND EVALUATION
12.1.
Works to be Measured
The Engineer shall, except as otherwise stated ascertain and determine by measurement
and / or design dimension, at the discussion of the Engineer, to determine the value in
accordance with the Contract of Work done in accordance with the Contract. He shall,
when he requires any part or parts of the Works to be measured, give notice to the
Employer and Contractor's authorized agent or representative who shall forthwith attend
or send a qualified agent to assist the Engineer in making such measurement and shall
furnish all particulars required by either of them. Should the Contractor not attend or
neglect or omit to send such agent, then the measurement made by the Engineer or
approved by him, either of which must be approved by the Employer, shall be taken to be
the correct measurement of the work.
51
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
For the purpose of measuring such permanent work as is to be measured by record
drawings, the Engineer shall prepare record drawings month by month of such work and
the Contractor as and when called upon to do so in writing shall, within 14 days, attend to
examine and agree such record drawings with the Engineer and shall sign the same
when so agreed and if the contractor does not so attend to examine and agree any such
record drawings, they shall be taken to be correct. If after examination of such record
drawings, the Contractor does not agree to the same or does not sign the same as
agreed, they shall nevertheless be taken to be correct unless the Contractor shall, within
14 days of such examination, lodge with the Engineer for decision by the Engineer and
Employer, notice in writing of the respects in which such record drawings are claimed by
him to be incorrect.
12.2.
Method of Measurement
Where Works have to be measured for any purpose whatsoever, it shall be in
accordance with IS 1200 except where it is otherwise specifically indicate in the
respective item under Bill of Quantities or Technical Specification of material and
workmanship or conditions of Contract.
12.3.
Omissions
Whenever the omission of any work forms part (or all) of a Variation, the value of which
has not been agreed, if:
1. the Contractor will incur (or has incurred) cost which, if the work had not been
omitted, would have been deemed to be covered by a sum forming part of the
Accepted Contract Amount;
2. the omission of the work will result (or has resulted) in this sum not forming part
of the Contract Sum; and
3. this cost is not deemed to be included in the evaluation of any substituted work;
13.
VARIATIONS AND ADJUSTMENTS
13.1.
Variations, Provisional and Prime Cost Sums
13.1.1.
The Employer’s Personnel / The Employer / The Engineer may issue
instructions requiring a variation and sanction in writing any variation
made by the Contractor otherwise than pursuant to an instruction of the
Employer’s Personnel/ The Employer / The Engineer. No variation
required by the Employer’s Personnel/ The Employer / The Engineer or
subsequently sanctioned by him shall violate this contract.
13.1.2.
The term "Variation" as used in these conditions means the alteration or
modification of the design, quality or quantity of the work as shown upon
the Contract Drawings and desired by or referred to in the Contract Bills,
and includes the addition, omission or substitution of any work, the
alteration of the kind of standard of any of the materials or goods to be
used in the work, and the removal from the site of any works materials
52
Chennai Metro Rail Ltd,
Conditions of Contract for Car Shelter works
or goods executed or brought thereon by the Contractor for the
purposes of the work other than work, materials or goods which are not
in accordance with this Contract.
13.1.3.
The Employer's Personnel/ The Employer / The Engineer shall issue
instructions in regard to the expenditure of Prime Cost and Provisional
Sums included in the Contract Bills and of Prime Cost Sums which arise
as a result of instructions issued in regard to the expenditure of
Provisional Sums.
13.1.4.
All variations required by the Employer's Personnel/ The Employer / The
Engineer or subsequently sanctioned by him in writing and all work
executed by The Contractor for which Provisional Sums are included in
the Contract Bills shall be measured and valued by the Employer's
Personnel/ The Employer / The Engineer who shall give to The
Contractor an opportunity of being present at the time of such
measurement and of taking such notes and measurements as the
Contractor may require. The valuation of variations and of work
executed by the Contractor for which a Provisional Sum is included in
the Contract Bills, (other than work for which a Tender has been
accepted as aforesaid) unless otherwise agreed shall be made in
accordance with the following rules.
13.1.5.
The price in the Contract Bills shall determine the valuation of work of
similar character executed under similar conditions as work priced
therein
13.1.6.
The said prices, where work is not of a similar character or executed
under similar conditions as aforesaid, shall be the basis of prices for the
same so far as may be reasonable, failing which a fair valuation thereof
shall be made.
13.1.7.
Where work cannot properly be measured and valued, the Contractor
shall be allowed day-work rates on the prices prevailing when such work
is carried out (unless otherwise provided in the contract bills):
13.1.8.
At the rates if any, inserted by the Contractor in the Contract Bills or in
the form of Tender or
13.1.9.
When no such rates have been inserted, at the rates prevailing in the
market for material and labour and at the control rates for the controlled
materials including in all cases the rate for delivery of the material at the
work. Over and above the rate so worked out, Contractor's overheads
and profits at 15% (Fifteen Percent) shall be added and rate finally
arrived for consideration and approval of the Employer.
13.1.10.
The above mentioned percentage to be added as overheads and profits
to the basic rate analysis for new items / additional items of work shall
include all site and office overheads and profits of the Contractor, all
53
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
incidental and connected charges / expenditure, whether direct or
indirect, all applicable taxes, duties and levies and similar liabilities
which the Contractor may have to incur in the process of completing the
said item of work and the said overheads and profits shall also include
all infrastructure facilities, amenities, transportation, supervision,
insurance etc.
13.2.
13.1.11.
Provided that in any case voucher specifying the time daily spent upon
the work (and if required by the Employer's Personnel/ The Employer
/The Engineer, the workmen's names) and the materials employed shall
be delivered for verification to the Employer's Personnel/ The Employer
/ The Engineer or his authorized representative not later than the end of
the week following that in which the work has been executed.
13.1.12.
The prices in the Contract Bills shall determine the valuation of items
omitted, provided that if omissions substantially vary the conditions
under which any remaining items of work are carried out the prices for
such remaining items shall be valued under this clause.
13.1.13.
Effect shall be given to the measurement and valuation of variations
under this condition in Interim Certificates and by adjustment of the
Contract Sum; and effect shall be given to the measurement and
valuation of work for which a Provisional Sum is included in the Contract
Bills under the said Clause in Interim Certificate and by adjustment of
the Contract Sum in accordance with the Conditions of Contract.
13.1.14.
If upon written application being made to him by the Contractor, the
Employer's Personnel / The Employer / The Engineer is of the opinion
that a variation or the execution by The Contractor of work for which a
Provisional Sum is included in the Contract Bills has involved the
Contract in direct loss and/or express for which he would not be
reimbursed by payment in respect of a valuation made in accordance
with the rules contained in this Clause of the condition and if the said
application is made within a reasonable time of the loss or expense
having been incurred then the Employer's Personnel/ The Employer /
The Engineer shall ascertain the amount of such loss or expense.
13.1.15.
Any amount from time to time so ascertained shall be added to the
Contract Sum, and if an Interim Certificate is issued after the date of
ascertainment any such amount shall be added to the amount which
would otherwise be stated as due in such certificate.
Right to Vary
Variations may be initiated by the Engineer at any time prior to issuing the Practical
Completion Certificate for the Works, either by an instruction or by a request for the
Contractor to submit a proposal.
The Contractor shall execute and be bound by each Variation, unless the Contractor
54
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
promptly gives notice to the Engineer stating (with supporting particulars) that the
Contractor cannot readily obtain the Goods required for the Variation. Upon receiving this
notice, the Engineer shall cancel, confirm or vary the instruction.
Each Variation may include:
a. changes to the quantities of any item of work included in the Contract (however,
such changes do not necessarily constitute a Variation),
b. changes to the quality and other characteristics of any item of work,
c.
changes to the levels, positions and/or dimensions of any part of the Works,
d. omission of any work unless it is to be carried out by others,
e. any additional work, Plant, Materials or services necessary for the Permanent
Works, including any associated Tests on Completion, boreholes and other
testing and exploratory work, or
f.
changes to the sequence or timing of the execution of the Works.
The Contractor shall not make any alteration and/or modification of the Permanent
Works, unless and until the Engineer instructs or approves a Variation.
13.3.
Variation Procedure
If the Engineer requests a proposal, prior to instructing a Variation, the Contractor shall
respond in writing as soon as practicable, either by giving reasons why he cannot comply
(if this is the case) or by submitting:
A. a description of the proposed work to be performed and a programme for its
execution,
B. the Contractor’s proposal for any necessary modifications to the programme
according to Clause 8.3 [Programme] and to the Time for Completion, and
C. the Contractor’s proposal for evaluation of the Variation.
The Engineer shall, as soon as practicable after receiving such proposal, respond with
approval, disapproval or comments. The Contractor shall not delay any work whilst
awaiting a response.
Each instruction to execute a Variation, with any requirements for the recording of Costs,
shall be issued by the Engineer to the Contractor, who shall acknowledge receipt.
Each Variation shall be evaluated in accordance with Clause 12 [Measurement and
Evaluation], unless the Engineer instructs or approves otherwise in accordance with this
Clause.
13.4.
Payment in Applicable Currencies
If the Contract provides for payment of the Contract Sum in more than one currency, then
55
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
whenever an adjustment is agreed, approved or determined as stated above, the amount
payable in each of the applicable currencies shall be specified. For this purpose,
reference shall be made to the actual or expected currency proportions of the Cost of the
varied work, and to the proportions of various currencies specified for payment of the
Contract Sum.
13.5.
Daywork
For work of a minor or incidental nature, the Engineer may instruct that a Variation shall
be executed on a daywork basis. The work shall then be valued in accordance with the
Daywork Schedule included in the Contract, and the following procedure shall apply. If a
Daywork Schedule is not included in the Contract, this Clause shall not apply.
Before ordering Goods for the work, the Contractor shall submit quotations to the
Engineer. When applying for payment, the Contractor shall submit invoices, vouchers
and accounts or receipts for any Goods.
Except for any items for which the Daywork Schedule specifies that payment is not due,
the Contractor shall deliver each day to the Engineer accurate statements in duplicate
which shall include the following details of the resources used in executing the previous
day’s work:
a. the names, occupations and time of Contractor’s Personnel,
b. the identification, type and time of Contractor’s Equipment and Temporary
Works, and
c.
the quantities and types of Plant and Materials used.
One copy of each statement will, if correct, or when agreed, be signed by the Engineer
and returned to the Contractor. The Contractor shall then submit priced statements of
these resources to the Engineer, prior to their inclusion in the next Statement under
Clause 14.9 [Application for Interim Payment Certificates].
14.
CONTRACT SUM AND PAYMENT
14.1.
Item Rate Contract
14.1.1.
The Contract shall be an item rate contract. The Contractor shall be paid
for the actual quantity of work permanently installed and in accordance
with the contract documents, at the rates quoted by him in the Contract
Bills. Measurement shall be carried out as indicated in the tender
specification and as per schedule of quantities and prices.
14.1.2.
The schedule of Quantities given in Contract Bill is provisional and is
meant to indicate the scope of the work and to provide a uniform basis
for Tendering. The Owner reserves the right to increase or decrease any
of the quantities or to totally omit any item of work and the Contractor
shall not claim any extras or damages on these grounds.
14.1.3.
Quantity variation will have no ceiling limit in respect of individual items
56
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
and individual quantities can vary to any extent. Such variations shall
not warrant any claims for modifications to already quoted and accepted
rates. However variation to the value of total contract sum can vary to
the extent up to Plus (+) or minus (-) 30% without warranting change of
rates. In case the total value of contract varies in excess of the above
limit, rates of only the variation items and extra items will be reconsidered based on actual impact.
14.2.
14.1.4.
Tax - The rates shall also be firm and shall not be subject to variations in
costs of any or all inputs, such as but not limited to, materials, labour,
exchange variations, labour conditions, fluctuations in railway freights, or
any conditions whatsoever. Tenderers must include in their rates /
various tax / Duty / Freight charges such as Value Added Tax on works
contract, excise duty, entry, octroi or other tax, duty or, and any other
tax and duty or other levy levied by the Central Government or any State
Government or local authority except Service tax and cess, as applicable
including any variation during the Contract period and any agreed
extension thereto. No claim in respect of any variation or introduction
taxes or duties or levies as existing or future, shall be entertained by the
Employer.
14.1.5.
The Service Tax and Cess shall be payable as extra at prevailing rates.
However Service Tax shall be paid by the contractor to the concerned
department on demand and it will be reimbursed to him by the Employer
after the contractor produces the original challan to satisfy the employer
that it has been actually and genuinely paid by the contractor.
The Contract Sum
i.
the Contract Sum shall be agreed or determined and be subject to adjustments in
accordance with the Contract;
ii.
the Contractor shall pay all taxes, duties and fees required to be paid by him
under the Contract, and the Contract Sum shall not be adjusted for any of these
costs
iii.
any quantities which may be set out in the Bill of Quantities or other Schedule are
estimated quantities and are not to be taken as the actual and correct quantities:
a. of the Works which the Contractor is required to execute, or
b. for the purposes of Clause 12 [Measurement and Evaluation];
14.3.
Earnest Money Deposit (EMD):
Intending Tenderers shall pay as earnest money a sum of Rs 54,000./-(Rupees Fifty Four
Thousand only), produced as Demand Draft issued by a Nationalised, or Scheduled
Bank in India, drawn in favour of Chennai Metro Rail Limited, Chennai, Tamil Nadu,
India, OR by Bank Guarantee as per format in Appendix 1 on any Nationalized or
Scheduled Bankers in India valid for 90 days from the last date of submission of Tender.
57
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
A Tender which is not accompanied by such EMD will not be considered. The Earnest
Money will be returned to the chosen Tenderer without any interest after submission of
the First Bill.
E.M.D. of unsuccessful tenderers’ will be returned, without any interest after the
successful tenderer is awarded the work by the Employer and the tender documents are
returned.
14.4.
14.5.
Mobilisation Advance
14.4.1.
10% of tendered amount at 18% simple interest shall be paid as
Mobilisation advance (recoverable) payment in two equal instalments
against Bank Guarantee from a Nationalised / Scheduled Bank in India
valid till the completion of work. Payment will be made after the receipt
of Performance Bank Guarantee from the Contractor.
14.4.2.
The first instalment of Mobilisation Advance shall be paid within 14 days
from the date of issue of letter of Acceptance subject to furnishing
required Bank guarantee valid till the completion of work and also
Performance Bank Guarantee. The second instalment shall be paid
against required Bank Guarantee, on full mobilisation by the Contractor
at site to the satisfaction of the Employer / Engineer / Employer’s
representative.
14.4.3.
The value of the Bank Guarantee for Mobilisation Advance shall be
110% of the Mobilisation Advance.
14.4.4.
The recovery shall be commenced after 10% of work is complete and the
entire amount together with interest shall be recovered by the time 80%
of the work is complete.
Terms of Payment:
14.5.1.
All payments by the Employer under this contract will be made through
banking channel within the specified period based on detailed
measurements taken by the contractor in the presence of Employer at
the site and it will be checked and recorded by the Employer or his
representative. The Tender should be prepared by the contractor based
on the above measurement and the payment will be made after the
scrutiny and certification of the bill by the Engineers.
14.5.2.
All such interim / progressive payments shall be regarded as payment,
by way of advances against final payment only, and shall not preclude
the requiring of bad, unsound, and imperfect or unskilled work, to be
rejected, removed, taken away and re-constructed or re-erected. Any
Certificate given by the Engineer relating to the work done or materials
delivered forming part of such payment, may be modified or corrected by
any subsequent such certificate(s), or by the final certificate, and shall
not by itself, be conclusive evidence that any work or materials to which
it relates is / are in accordance with the Contract and Specification. Any
58
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
such interim payment or any part thereof shall not in any respect
conclude, determine, or affect, in any way the powers of the Engineer
under the Contract or any of such payments be treated as final
settlement and adjustment of accounts, or in any way vary, or affect the
contract or right of the Employer under the terms of the Contract.
14.6.
14.7.
Payment of Part rates:
14.6.1.
Payment at part rates to the extent of work done against agreement
rates for certain items may be made in the running account bills at the
discretion of the Employer/ Engineer.
14.6.2.
The part rate to be allowed for an item shall be as assessed and decided
by the Employer/ Engineer, for the extent of work done, and whether the
item could be completed in all respects, as per Specification, within the
balance amount available.
14.6.3.
Reasons for allowing part rates shall be recorded in the bills against the
items under remarks column.
14.6.4.
Full rate shall be released, in subsequent bills on completion of the item
of work in all respects as per Specification after duly deducting the
Amount already paid as Part payment.
Interim Payments :
14.7.1.
Payment for works:
Progressive payment shall be made on monthly running account bills.
Engineer shall certify the running account bills within 14 days from the date of
submission of bills in complete shape by the Contractor with all required
enclosures, attachments etc.
The Employer shall make payment within 21 days from the date of certification of
bills by the Engineer .
Mobilization Advance will be recovered
Any other applicable deductions as per Conditions of Contract
Other applicable deductions.
14.8.
Final Bill:
14.8.1.
The Contractor shall submit his final bill for the works within a month of
completion of works. The bill shall be based only on works as measured
and at accepted agreement rates, including rates for any additional or
extra work, which might have been sanctioned by the Employer. All
deductions due under the Contract shall be made.
59
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
14.8.2.
Final bill Payment:
a. Final bill shall be submitted by the Contractor, within a month from the
date of completion of all the works.
b. The Employer shall certify the final bill within a month of submission in
complete shape with all the required documents, subject to finalisation of
extra claims, if any.
c. The Employer shall make payment for the final bill within a month from
the date of certification of final bill by the Employer.
14.8.3.
Deduction in Final bill :
a. Applicable deductions as per Conditions of Contract.
b. Any money recoverable from the Contractor.
c. All interim payments effected.
14.9.
Delayed Payment:
No interest is payable on Delayed Payments.
14.10.
Payment of Retention Money:
14.10.1.
Payment on Account and Retention:
The Contractor may, at intervals specified in the Tender, submit claims
for payment of advances on account of work done and materials
delivered at the Site in accordance with the Contract. Such claims which
shall be for a net amount not less than the minimum named in the tender
shall be computed as under
14.10.2.
Retention Amount:
In addition to the Performance Bond/Performance Guarantee in the form
of Bank Guarantee as required under Clause No.5.2 above, as a further
security for the due fulfilment of the contract by the Contractor, 10% of
the value of the work done will be deducted by the Employer from each
payment to be made to the Contractor until the retention money amounts
to a maximum of 5% of the contract sum of the work.
Upon the Engineer’s certificate of completion of the works, 50% of the
retention money would be refunded and the balance after due
completion of all obligations under the contract agreement and defects
liability period. The amounts retained by the Employer shall not bear
interest.
14.11.
Secured Advance on Material at site:
60
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
Secured Advance against material delivered at site is not payable.
14.12.
Currencies of Payment
The Contract Sum shall be paid in the currency or currencies named in the
Conditions of the Contract.
15.
TERMINATION
15.1.
Notice to Correct:
If the Contractor fails to carry out any obligation under the Contract, the Engineer may by
notice require the Contractor to make good the failure and to remedy it within a specified
reasonable time.
15.2.
Termination of the contract :
If the Contractor shall become bankrupt or have a receiving order made against him or
shall present his petition in bankruptcy or shall make an arrangement with or assignment
in favour of his creditors or shall agree to carry out the Contract under a committee of
inspection of his creditors or (being a corporation) shall go into liquidation (other than a
voluntary liquidation for the purposes of amalgamation or reconstruction) or if the
Contractor shall assign the Contract without the consent in writing of the Employer first
obtained or shall have an execution levied on his goods or if the Engineer shall certify in
writing to the Employer that in his opinion the Contractor:-
i. has abandoned the Contract or
ii. without reasonable excuse has failed to commence the Works or has suspended
the progress of the Works for 28 days after receiving from the Engineer written
notice to proceed or
iii. has failed to remove materials from the Site or to pull down and replace work for
28 days after receiving from the Engineer written notice that the said materials or
work had been condemned and rejected by the Engineer under these conditions
or
iv. is not executing the Works in accordance with the Contract or is persistently or
flagrantly neglecting to carry out his obligations under the Contract or
v. has to the detriment of good workmanship or in defiance of the Engineer's
instructions to the contrary sub-let any part of the Contract then the Employer
may after 14 days notice in writing to the Contractor enter upon the Site and the
Works and expel the Contractor therefrom without thereby voiding the Contract
or releasing the Contractor from any of his obligations or liabilities under the
Contract or affecting the rights and powers conferred on the Employer or the
Engineer by the Contract and may himself complete the Works or may employ
any other contractor to complete the Works and the Employer or such other
contractor may use for such completion so much of the Constructional Plant
Temporary Works and materials which have been deemed to become the
property of the Employer under the provisions of the Contract as he or they may
61
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
think proper and the Employer may at any time sell any of the said Constructional
Plant Temporary Works and unused materials and apply the proceeds of sale in
or towards the satisfaction of any sums due or which may become due to him
from the Contractor under the Contract.
15.3.
Valuation at Date of Termination:
As soon as may be practicable after any such entry and expulsion by the Employer, the
Engineer, with the prior written consent of the Employer, shall fix and determine ex-parte
or by or after reference to the parties or after such investigation or enquiries as he may
think fit to make or institute and shall certify what amount (if any) had at the time of such
entry and expulsion been reasonably earned by or would reasonably accrue to the
Contractor in respect of work then actually done by him under the contract and what was
the value of any unused or partially used materials any Constructional Plant and
Temporary Works which have been deemed to become the property of the Employer
under the provisions of the Contract.
15.4.
Payment after Termination:
If the Employer shall enter and expel the Contractor under this Clause the Employer shall
not be liable to pay to the Contractor any money on account of the Contract until the
expiration of the Period of Maintenance and thereafter until the costs of completion and
maintenance damages for delay in completion (if any) and all other expenses incurred by
the Employer have been ascertained and the amount thereof certified by the Engineer in
consultation with the Employer. The Contractor shall then be entitled to receive only
such sum or sums (if any) as the Engineer may certify would have been due to him upon
due completion by him after deducting the said amount. But if such amount shall exceed
the sum which would have been payable to the Contractor on due completion by him
then the Contractor shall upon demand pay to the Employer the amount of such excess
and it shall be deemed a debt due by the Contractor to the Employer and shall be
recoverable accordingly.
15.5.
Employer‟s Entitlement to Termination:
The Employer shall be entitled to terminate the Contract, at any time for the Employer’s
convenience, by giving notice of such termination to the Contractor. The termination shall
take effect 28 days after the later of the dates on which the Contractor receives this
notice or the Employer returns the Performance Security. The Employer shall not
terminate the Contract under this Clause in order to execute the Works himself or to
arrange for the Works to be executed by another contractor.
16.
SUSPENSION
16.1.
Suspension of Work
The Engineer may at any time instruct the Contractor to suspend progress of part or all of
the Works. During suspension, the Contractor shall protect, store and secure such part or
whole of the Works against any deterioration, loss or damage.
16.2.
Consequences of Suspension
62
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
The Contractor shall not be entitled to extra cost (if any), incurred by him, during the
period of suspension of Work, if such suspension is
a. provided for in the Contract, or
b. necessary for proper execution of Works or by reasons or weather condition or
by some default on the part of the Contractor, or
c.
necessary for the safety of Works or any part thereof or
d. necessary for the safety of adjoining public or other properly or safety of the
public or workmen or those who have to be at the site or
e. to ensure safety and to avoid disruption of traffic and utilities, as also to permit
fast repairs and restoration of any damaged utilities,
If suspension is ordered by the Engineer for reasons other than those mentioned in
clause 8.8 then the Contractor's entitlement are in the table below :
Suspension
Period
Extension
of time
Compensation for
the
suspension period
Remarks
Upto
14 days
No
No
Engineer may, at
his sole discretion,
give extension of
time in exceptional
circumstances
15-30 Days
YES
No
Extension of time
as considered
proper by the
Engineer
Above
Days
30-90
YES
No
Extension of time
as considered
proper by the
Engineer
Above 90 days
if
Contractor
asks for fore
Closure.
YES
As per Daily rate of
wages for idle
labour/Employees
70% of the rate for
hire charges for idle
plant and machinery
(excluding cost of
fuel
and lubricants)
15% above all these
items to cover
Compensation as
assessed by the
Engineer on
submission of
documentary proof
by the Contractor to
Engineer’s
satisfaction.
63
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
overhead costs
16.3.
Payment for Plant and Materials in Event of Suspension
The Contractor shall be entitled to payment of the value (as at the date of suspension) of
Plant and/or Materials which have not been delivered to Site, if:
1. the work on Plant or delivery of Plant and/or Materials has been suspended for
more than 28 days, and
2. the Contractor has marked the Plant and/or Materials as the Employer’s property
in accordance with the Engineer’s instructions.
16.4.
Prolonged Suspension
If the progress of the works or any part thereof is suspended on the written order of the
Engineer for more than 90 days, the Contractor may serve a written notice on the
Engineer requiring permission within 28 days from the receipt thereof to proceed with the
Works or that part thereof in regard to which progress is suspended and if such
permission is not granted within that time, the Contractor, by a further written notice so
served, may (but is not bound to) elect to treat the suspension where it affects part only
of the Works as an omission of such part under Clause 12 hereof or where it affects the
whole works as an abandonment of the Contract by the Employer/Engineer.
16.5.
Resumption of Work
After the permission or instruction to proceed is given, the Contractor and the Engineer
shall jointly examine the Works and the Plant and Materials affected by the suspension.
The Contractor shall make good any deterioration or defect in or loss of the Works or
Plant or Materials, which has occurred during the suspension.
17.
RISK AND RESPONSIBILITY
17.1.
Indemnities:
The Contractor shall indemnify and hold harmless the Employer, the Employer’s
Personnel, and their respective agents, against and from all claims, damages, losses and
expenses (including legal fees and expenses) in respect of:
A. bodily injury, sickness, disease or death, of any person whatsoever arising out of
or in the course of or by reason of the Contractor’s design (if any), the execution
and completion of the Works and the remedying of any defects, unless
attributable to any negligence, wilful act or breach of the Contract by the
Employer, the Employer’s Personnel, or any of their respective agents, and
B. damage to or loss of any property, real or personal (other than the Works), to the
extent that such damage or loss:
a. arises out of or in the course of or by reason of the Contractor’s design (if
any), the execution and completion of the Works and the remedying of
64
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
any defects, and
b. is attributable to any negligence, wilful act or breach of the Contract by
the Contractor, the Contractor’s Personnel, their respective agents, or
anyone directly or indirectly employed by any of them.
The Employer shall indemnify and hold harmless the Contractor, the Contractor’s
Personnel, and their respective agents, against and from all claims, damages, losses and
expenses (including legal fees and expenses) in respect of (1) bodily injury, sickness,
disease or death, which is attributable to any negligence, wilful act or breach of the
Contract by the Employer, the Employer’s Personnel, or any of their respective agents,
and (2) the matters for which liability may be excluded from insurance cover, as
described in Clause 18.4 [Insurance Against Injury to Persons and Damage to Property].
17.2.
Contractor‟s Care of the Works:
From the commencement to the completion of the Works/Plant/Equipment, the
Contractor shall take full responsibility for the care thereof and of Temporary Works and
Constructional Plant and in case any damage, loss or injury shall occur to the
Works/Plant/Equipment or to any part thereof or to any Temporary Works or
Constructional Plant from any cause whatsoever Contractor shall at his own cost, repair
and make good the same so that at completion the Work/Plant/Equipment shall be in
good order and condition and in conformity in every respect with the requirement of the
Contract and the Engineer's instructions.
The Contractor also assumes all risks, hazards and conditions in connection with the
performance of the Contract. If the performance of the contract involves a greater
expenditure than the Contractor anticipated, no allowance will be made on account
thereof, and the Contractor shall nevertheless complete the work in accordance with the
terms of the contract.
The Contractor will be responsible for loss or damage to his own / or Subcontractor’s own
equipment or materials which will not form part of the completed project.
17.3.
Employer‟s Risks:
The risks referred to in Clause 17.4 below are:
A. war, hostilities (whether war be declared or not), invasion, act of foreign enemies,
B. rebellion, terrorism, revolution, insurrection, military or usurped power, or civil
war, within the Country,
C. riot, commotion or disorder within the Country by persons other than the
Contractor’s Personnel and other employees of the Contractor and
Subcontractors,
D. munitions of war, explosive materials, ionising radiation or contamination by
radio-activity, within the Country, except as may be attributable to the
Contractor’s use of such munitions, explosives, radiation or radio-activity,
E. pressure waves caused by aircraft or other aerial devices travelling at sonic or
65
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
supersonic speeds,
F. use or occupation by the Employer of any part of the Permanent Works, except
as may be specified in the Contract,
G. design of any part of the Works by the Employer’s Personnel or by others for
whom the Employer is responsible, and
H. any operation of the forces of nature which is Unforeseeable or against which an
experienced contractor could not reasonably have been expected to have taken
adequate preventative precautions.
17.4.
Consequences of Employer‟s Risks:
If and to the extent that any of the risks listed in Clause 17.3 above results in loss or
damage to the Works, Goods or Contractor’s Documents, the Contractor shall promptly
give notice to the Engineer and shall rectify this loss or damage to the extent required by
the Engineer.
If the Contractor suffers delay and/or incurs Cost from rectifying this loss or damage, the
Contractor shall give a further notice to the Engineer and shall be entitled subject to
Clause 20.1 [Contractor’s Claims] to:
a. an extension of time for any such delay, if completion is or will be delayed,
b. payment of any such Cost, which shall be included in the Contract Sum. In the
case of Clause 17.3 [Employer’s Risks], reasonable profit on the Cost shall also
be included.
17.5.
Intellectual and Industrial Property Rights:
In this Clause, “infringement” means an infringement (or alleged infringement) of
any patent, registered design, copyright, trademark, trade name, trade secret or
other intellectual or industrial property right relating to the Works; and “claim”
means a claim (or proceedings pursuing a claim) alleging an infringement.
Whenever a Party does not give notice to the other Party of any claim within 28
days of receiving the claim, the first Party shall be deemed to have waived any
right to indemnity under this Clause.
The Employer shall indemnify and hold the Contractor harmless against and from
any claim alleging an infringement which is or was:
17.5.1.
an unavoidable result of the Contractor’s compliance with the Contract,
or
17.5.2.
a result of any Works being used by the Employer:
for a purpose other than that indicated by, or reasonably to be inferred from, the
Contract, or
66
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
in conjunction with any thing not supplied by the Contractor, unless such
use was disclosed to the Contractor prior to the Base Date or is stated in the
Contract.
17.6.
Limitation of Liability
Neither Party shall be liable to the other Party for loss of use of any Works, loss
of profit, loss of any contract or for any indirect or consequential loss or damage
which may be suffered by the other Party in connection with the Contract, other
than under Clause 16.3 [Payment on Termination] and Clause 17.1 [Indemnities].
The total liability of the Contractor to the Employer, under or in connection with
the Contract other than under Clause 5.22 [Electricity, Water], Clause 17.1
[Indemnities] and Clause 17.5 [Intellectual and Industrial Property Rights], shall
not exceed the sum stated in the Particular Conditions or (if a sum is not so
stated) the Accepted Contract Amount.
This Clause shall not limit liability in any case of fraud, deliberate default or
reckless misconduct by the defaulting Party.
18.
INSURANCE
18.1.
GeneralRequirements for Insurances:
18.1.1.
It is the Contractor’s responsibility, to take insurance for the work,
workmen, and third party liability, and indemnify the Employer, from all
claims, arising out of this Contract. the Employer will arrange for
insurance only after Practical Completion of the Project from the
Contractor.The Contractor has to allow for all risks in his Tende rates
and no compensation on any account will be paid by the Employer.
Force Majeure will only permit time extension within his Tender rates for
contract performance as may be approved by the Employer.
18.1.2.
The Contractor shall be responsible for all injury or damage to persons,
animals or things and for all damage to property which may arise from
any factor, omission, on the part of The Contractor, or any Subcontractor
or any of their employees.
18.1.3.
The liability under this clause shall cover also, inter alia, any damage to
structures, whether immediately adjacent to the works or otherwise, any
damage to roads, streets, footpaths, bridges, as well as damage caused
to the buildings and other structures and works, forming the subject
matter of this Contract. The Contractor shall also be responsible for any
damage caused to the buildings and other structures and works, forming
the subject matter of this Contract due to rain, wind, frost, or other
inclemency of weather.
18.1.4.
The Contractor shall indemnify and keep indemnified the Employer and
hold him harmless in respect of all and any loss and expenses arising
67
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
from any such injury, or damage to persons, or property as aforesaid and
also against any claim made in respect of injury or damage, whether
under any statute or otherwise, and also in respect of any award or
compensation or damage consequent upon such claim.
Contractor‟s All Risk (CAR) Policy
18.1.5.
The Contractor shall, at his own expense, effect and maintain till the
issue of the Virtual Completion Certificate under this Contract with an
Indian insurance company approved by the Employer, an All Risks
Policy of Insurance including earthquake risk, in the joint names of the
the Employer and The Contractor (the name of the former being placed
first in the policy) against all risk as per the standard comprehensive All
Risk Policy for the amount of Contract and deposit such policy or
policies with the Employer before commencing the works.
Insurance Cover for Contractor’s All Risk shall include the following but
not limited to
●
50/50 Clause
●
72 Hours Clause
●
Free Automatic Reinstatement Clause upto 10% of SI
●
Loss Minimisation Expenses
●
Professional Fees
●
Waiver of Contribution Clause
●
Expediting cost including Air Freight and Express Freight upto 30% of
net claim amount.
●
Amendment in Fire Fighting Endorsement wording.
●
Owner Surrounding Property upto 10% of the policy SI with FLEXA Risk.
●
Debris Removal upto Rs.10 Cr.
●
Cover for offsite storage/fabrication
●
TPL with cross liability till expiry of the Extended Maintenance Period
AOA Limit is as 1% of the Contract price
●
Escalation Cost upto 50% of the policy SI
●
Waiver of Subrogation Clause
●
Design Defect Cover as per DE3 wordings of Munich Re.
●
Extended Maintenance Cover for 24 Months.
68
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
●
Earthquake
●
STFI
●
Terrorism
18.1.6.
The Contractor shall reinstate all damage of every sort mentioned in this
Clause so as to deliver up the whole of the works complete and perfect
in every respect and so as to make good or otherwise satisfy all claims
for damage to property of third parties.
18.1.7.
THIRD PARTY INSURANCE
The Contractor shall also indemnify and keep indemnified the Employer
against all claims which may be made against the the Employer, by any
person, in respect of anything, which may arise in respect of the works or
in consequence thereof and shall, at his own expense, effect and
maintain until the Virtual Completion of the Contract with an Insurance
Company, approved by the Employer, a policy of Insurance in the joint
names of the the Employer and The Contractor (name of the former
being placed first in the policy) against such risks and deposit such policy
or policies before commencement of the works. The minimum limit of the
coverage under the Policy shall be One percent (1%) of the Value of the
Total Contract Price for any one incident, with number of incidents
unlimited.
18.1.8.
The Contractor shall, also indemnify the Employer against all which may
be upon the Employer, whether under the workmen's compensation Act
or any other statute in force during the currency of this Contract or at
common Law, in respect of any employee of The Contractor or of any
Subcontractor and shall at his own expense, effect and maintain until the
Virtual Completion of the Contract with an Indian Insurance Company
approved by the Employer, a Policy of Insurance, against such risks and
deposit such policy or policies with the Employer from time to time during
the currency of this Contract.
18.1.9.
In default of the Contractor, insuring as provided above, the Employer
may insure him on the above lines and may deduct the premiums paid
from any moneys, due or which may become due to The Contractor.
18.1.10.
The Contractor shall be responsible, for any liability which may not be
covered by the Insurance Policies referred to above, and also for all
other damages to any person, animal or things, or defects while carrying
out of this Contract, whatever may be the reasons due to which the
damage shall have been caused.
18.1.11.
The Contractor shall also indemnify and keep indemnified the Employer,
against all and any cost, charges or expenses, arising out of any claim,
or proceedings, relating to the works and also in respect of any award of
damages or compensation arising there from.
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Conditions of Contract for Car Shelter works
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18.2.
18.1.12.
Without prejudice to the other rights of the Employer against the
Contractor in respect
of such default, the Employer shall be entitled to
deduct from any sums payable to the Contractor the amount of any
damages, compensation costs, charges, and other expenses, paid by
the Employer and which are payable by The Contractor under this
Clause.
18.1.13.
The Contractor shall upon settlement by the Insurer of any claim made
against the Insurer pursuant to a policy taken under this clause, proceed
with due diligence to rebuild or repair the works destroyed or damaged.
In this event, all the monies received from the Insurer in respect of such
damage shall be paid to The Contractor and The Contractor shall not
be entitled to any further payment in respect of the expenditure incurred
for rebuilding or repairing of the materials or goods destroyed or
damaged.
18.1.14.
The Contractors in case of re-building or reinstatement after fire shall be
entitled to such Extension of Time for completion as Employer’s
Personnel / the Employer / the Engineer may deem fit, but shall,
however, not be entitled to reimbursement by the Employer of any
shortfall or deficiency in the amount finally paid by the Insurer in
settlement of any claim arising as set out herein.
18.1.15.
Without prejudice to his liability under this Clause, the Contractor shall
also cause all Direct Subcontractors to effect for their respective portions
of the works, similar policies of insurance in accordance with the
provisions of this Clause and shall produce or cause to produce to the
Employer, such policies. In the event of failure of the subcontractor to
take out such a policy of insurance before commencing the works at the
site, The Contractor shall be responsible for any claim or damage
attributable to the said Sub- Contractor.
Injury to persons and property of Employer:
18.2.1.
The Contractor shall be liable for and shall indemnify the Employer
against any liability, loss, claim, or proceedings whatsoever arising under
any statute or at common law, in respect of personal injury to or the
death of any person, whomsoever, arising out of or in the course of or
caused by the carrying out of the works, unless such claim arises due to
any act, or neglect of the Employer, or of any person for whom the
Employer is responsible.
18.2.2.
The Contractor shall be liable for and shall indemnify the Employer
against any expense, liability, loss, claim, or proceedings, in respect of
any injury, or damage, whatsoever, to any property, movable or
immovable, in so far as, such injury or damage arises out of ,or in the
course of , or by reason of, the carrying out of the works, and provided
always that the same is due to any negligence, omission, or default of
The Contractor, his servants or agents or of any Subcontractor, his
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Conditions of Contract for Car Shelter works
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servant or agent.
18.3.
Insurance for Works and Contractor‟s Equipment:
18.3.1.
The Contractor shall in the joint names of the Employer and the
Contractor , insure against loss or damage by fire, storm, tempest,
lightning, flood, earthquake, aircraft or anything dropped there from,
aerial objects, riot, and civil commotion, for the full value thereof, all work
executed and all unfixed materials, and goods intended for, delivered to,
and placed on, or adjacent to the work, but excluding temporary building
plant, tools, and equipment, owned or hired by The Contractor, or any
Subcontractor, and shall ,keep such work, materials, and goods, so
insured until Virtual Completion of the Project. Such insurances shall be
with insurers approved by the Employer / Consultant and The Contractor
shall deposit with the Employer/Consultant, the policy or policies and the
receipts in respect of premiums paid: and should The Contractor make
default in insuring or continuing to insure, as aforesaid, the the Employer
may himself insure against any risk with respect of which the default
shall have occurred and deduct, a sum equivalent to the amount paid by
him in respect of premium from any monies due to, or to become due to
The Contractor.
18.3.2.
Provided always, that if The Contractor shall independently of his
obligations under this Contract, maintain a policy of Insurance which
covers (inter alia) the said work, materials, and goods, against the
aforesaid contingencies to the full value thereof, then, the maintenance
by The Contractor of such policy shall, if the Employer’s interest is
endorsed thereon, be a discharge of The Contractor's obligation to insure
in the joint names of the Employer and Contractor and the production by
The Contractor as and when may reasonably be required by the
Employer of a current Certificate of Insurance from the company or firm
which shall have issued the said policy, shall be a discharge of The
Contractor's obligation ,to deposit with the Employer ,a policy or policies
and the receipts in respect of premiums paid.
18.3.3.
Upon settlement of any claim under the Insurances aforesaid, the
Contractor with due diligence shall restore, work damaged, replace, or
repair, unfixed materials, or goods, which have been destroyed or
injured, remove, or dispose of, any debris, and proceed with the carrying
out and completion of the work. All monies received from such
insurances, shall be paid to The Contractor, by instalments, under
Certificates of Employer's Personnel / the Employer / the Engineer
Issued, at the period of interim Certificates, named in the Appendix to
these Conditions. The Contractor shall not be entitled to payment, in
respect of the restoration of work damaged, the replacement, and repair
of any unfixed materials, or goods, and the removal, and disposal of,
debris, other than the monies received under the said insurances.
18.3.4.
All works executed and all unfixed materials and goods intended for,
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Conditions of Contract for Car Shelter works
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delivered to, and placed on or adjacent to the works (except temporary
buildings, plant, tools and equipment owned or hired by the Contractor or
his Subcontractor), shall be at the sole risk of the Contractor, as regards
loss or damage by fire, storm, tempest, lightning, flood, earthquake,
aircraft or anything dropped there from, aerial objects, riot, and civil
commotion. If any loss or damage, affecting the work, or any part thereof
or any such unfixed materials or goods, is occasioned by, any one or
more of the said contingencies, then:
18.3.5.
The occurrence of such loss or damage shall be disregarded, in
computing any amounts payable to the Contractor under or by virtue of
this Contract.
18.3.6.
The Contractor with due diligence shall restore work damaged, replace
or repair any unfixed materials or goods which have been destroyed or
injured, remove and dispose of any debris, and proceed with carrying out
and completion of the work. The restoration of work damaged, the
replacement and repair of unfixed materials, and goods, and the removal
and disposal of debris, shall be deemed to be a variation required by the
Consultant.
18.3.7.
The existing structure together with all the contents thereof and the
works, and all unfixed materials, and goods, intended for, delivered to,
and placed on, or adjacent to the works, (except temporary buildings,
plant, tools and equipment, owned or hired by The Contractor, or any
Subcontractor) shall be at the sole risk of the Employer, as regards loss
or damage by fire, storm, tempest, lightning, flood, earthquake, aircraft or
anything dropped there from, aerial objects, riot, and civil commotion,
and the Employer shall maintain adequate Insurance, against that risk, if
any loss or damage, affecting the work, or any part thereof, or any
such unfixed materials, or goods, is occasioned, by any one or more of
the said contingencies, then :
18.3.8.
The occurrence of such loss or damage shall be disregarded, in
computing any amounts payable to The Contractor, under or by virtue of
this Contract.
If it is just and equitable so to do the employment of the Contractor, under this
Contract may within 28 days of the occurrence of such loss or damage be
determined at the option of either party, by notice by registered post, or recorded
delivery, from either party to the other. Within seven days of receiving such
notice ,(but not thereafter) either party may give to the other, a written request to
concur in the appointment of an Arbitrator under Clause of these Conditions, in
order that it may be determined whether such determination will be just and
equitable.
Upon the giving or receiving by the Employer of such a notice of determination or
where a reference to Arbitration is as aforesaid upon the Arbitrator upholding the
notice of determination,
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Conditions of Contract for Car Shelter works
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If no notice of determination is served as aforesaid or where reference to
Arbitration is made as aforesaid if the Arbitrator decides against the notice of
determination then.
18.4.
18.3.9.
The Contractor with due diligence shall reinstate or make good such loss
or damage and proceed with the carrying out and completion of the
works.
18.3.10.
Employer’s Personnel / The Employer / The Engineer may issue
instructions requiring Contractor to remove and dispose of any debris;
and
18.3.11.
The reinstatement and making good of such loss or damage and (when
required) the removal and disposal of debris, shall be deemed to be a
variation required by the Employer.
Insurance against Injury to Persons and Damage to Property :
18.4.1.
Without Prejudice to his liability to indemnify the the Employer, under
Clause- of these Conditions, The Contractor shall maintain and shall
cause any Subcontractor to maintain:
18.4.2.
Such Insurances, as are necessary, to cover the liability of The
Contractor ,or as the case may be of such Subcontractor, in respect of
personal injuries or deaths arising out of or in the course of or caused by
the carrying out of the work; and
18.4.3.
Such insurances as may be specifically required by the Contract Bills in
respect of injury or damage to property, movable or immovable, arising
out of or in the course of, or by reason of, the carrying out of the work,
and caused by any negligence, omission, or default, of The Contractor,
his servants or agents or, as the case may be, of such Sub- Contractor,
his servants or agents.
18.4.4.
The Contractor shall produce or cause any Subcontractor to produce for
inspection, the relevant policy or policies of Insurance together with the
receipts, in respect of premiums paid under such policy or policies, as
and when required so by the Employer / Consultant, provided always,
that as and when may be reasonably required by the Employer, the
production by either The Contractor or any Subcontractor, of a current
Certificate of Insurance, from the company or firm which shall have
issued the policy or policies aforesaid, shall be a good discharge of The
Contractor's obligation to produce or to cause the production of the policy
or policies, and the receipts in respect of premium paid.
18.4.5.
The Contractor shall maintain in the joint names of the Employer and the
Contractor, such Insurances, as may be required, in respect of any
expense, liability, loss, claim or proceedings which the Employer may
incur or sustain by reason of injury, or damage to property, real or
personal, arising out of, or in the course of, or by reason of ,the carrying
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Conditions of Contract for Car Shelter works
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out of the work, and caused otherwise than by the negligence, omission,
or default of The Contractor, his servants or agents or any
Subcontractor, his servants or agents.
18.4.6.
Any such Insurance as is referred to, in the immediately preceding
paragraph shall be placed with insurers to be approved by the Employer,
and The Contractor shall have to deposit with the Employer the policy or
policies and the receipts in respect of premiums paid for the scrutinizing
of the Employer.
18.4.7.
Should The Contractor or any Subcontractor make default in insuring or
in continuing to insure as provided in the above Clauses, the Employer
may himself insure against any risk with respect to which the default
shall have occurred, and may deduct a sum equivalent to the amount
paid in respect of premiums from any monies due to or become due to
The Contractor.
Insurance for Contractor‟s Personnel:
18.5.
The Contractor shall effect and maintain insurance against liability for claims,
damages, losses and expenses (including legal fees and expenses) arising from
injury, sickness, disease or death of any person employed by the Contractor or
any other of the Contractor’s Personnel.
The Employer and the Engineer shall also be indemnified under the policy of
insurance, except that this insurance may exclude losses and claims to the
extent that they arise from any act or neglect of the Employer or of the
Employer’s Personnel.
The insurance shall be maintained in full force and effect during the whole time
that these personnel are assisting in the execution of the Works. For a
Subcontractor’s employees, the insurance may be effected by the Subcontractor,
but the Contractor shall be responsible for compliance with this Clause.
19.
FORCE MAJEURE
19.1.
Definition of Force Majeure:
In this Clause, “Force Majeure” means an exceptional event or circumstance:
a. which is beyond a Party’s control,
b. which such Party could not reasonably have provided against before entering
into the Contract,
c.
which, having arisen, such Party could not reasonably have avoided or
overcome, and
d. which is not substantially attributable to the other Party.
Force Majeure may include, but is not limited to, exceptional events or circumstances of
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Conditions of Contract for Car Shelter works
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the kind listed below, so long as conditions (a) to (d) above are satisfied:
19.2.
i.
war, hostilities (whether war be declared or not), invasion, act of foreign
enemies,
ii.
rebellion, terrorism, revolution, insurrection, military or usurped power, or
civil war,
iii.
riot, commotion, disorder, strike or lockout by persons other than the
Contractor’s Personnel and other employees of the Contractor and
Subcontractors,
iv.
munitions of war, explosive materials, ionising radiation or contamination
by radioactivity, except as may be attributable to the Contractor’s use of
such munitions, explosives, radiation or radioactivity, and
v.
natural catastrophes such as earthquake, hurricane, typhoon or volcanic
activity.
Notice of Force Majeure:
If a Party is or will be prevented from performing any of its obligations under the
Contract by Force Majeure, then it shall give notice to the other Party of the event
or circumstances constituting the Force Majeure and shall specify the obligations,
the performance of which is or will be prevented. The notice shall be given within
14 days after the Party became aware, or should have become aware, of the
relevant event or circumstance constituting Force Majeure.
The Party shall, having given notice, be excused performance of such obligations
for so long as such Force Majeure prevents it from performing them.
Notwithstanding any other provision of this Clause, Force Majeure shall not apply
to obligations of either Party to make payments to the other Party under the
Contract.
19.3.
Duty to Minimise Delay:
Each Party shall at all times use all reasonable endeavours to minimise any
delay in the performance of the Contract as a result of Force Majeure. A Party
shall give notice to the other Party when it ceases to be affected by the Force
Majeure.
19.4.
Consequences of Force Majeure:
19.4.1.
If the Contractor is prevented from performing any of his obligations
under the Contract by Force Majeure of which notice has been given
under Clause 19.2 [Notice of Force Majeure], and suffers delay and/or
incurs Cost by reason of such
19.4.2.
Force Majeure, the Contractor shall be entitled subject to Clause 20.1
[Contractor’s Claims] to:
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Conditions of Contract for Car Shelter works
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an extension of time for any such delay, if completion is or will be delayed, under
Conditions of this contract.
if the event or circumstance is of the kind described in Clause 19.1 [Definition of
Force Majeure] and, in the case of subparagraphs (ii) to (iv), occurs in the
Country, payment of any such Cost.
19.5.
Force Majeure Affecting Subcontractor:
If any Subcontractor is entitled under any contract or agreement relating to the
Works to relief from force majeure on terms additional to or broader than those
specified in this Clause, such additional or broader force majeure events or
circumstances shall not excuse the Contractor’s non-performance or entitle him
to relief under this Clause.
19.6.
Optional Termination, Payment and Release:
If the execution of substantially all the Works in progress is prevented for a
continuous period of 84 days by reason of Force Majeure of which notice has
been given under Clause 19.2 [Notice of Force Majeure], or for multiple periods
which total more than 140 days due to the same notified Force Majeure, then
either Party may give to the other Party a notice of termination of the Contract. In
this event, the termination shall take effect 7 days after the notice is given, and
the Contractor shall proceed in accordance with the Conditions of the contract
19.7.
19.6.1.
the amounts payable for any work carried out for which a price is stated
in the Contract;
19.6.2.
the Cost of Plant and Materials ordered for the Works which have been
delivered to the Contractor, or of which the Contractor is liable to accept
delivery: this Plant and Materials shall become the property of (and be at
the risk of) the Employer when paid for by the Employer, and the
Contractor shall place the same at the Employer’s disposal;
19.6.3.
any other Cost or liability which in the circumstances was reasonably
incurred by the Contractor in the expectation of completing the Works;
19.6.4.
the Cost of removal of Temporary Works and Contractor’s Equipment
from the Site and the return of these items to the Contractor’s works in
his country (or to any other destination at no greater cost);
19.6.5.
the Cost of repatriation of the Contractor’s staff and labour employed
wholly in connection with the Works at the date of termination.
Release from Performance under the Law:
Notwithstanding any other provision of this Clause, if any event or circumstance
outside the control of the Parties (including, but not limited to, Force Majeure)
arises which makes it impossible or unlawful for either or both Parties to fulfil its
or their contractual obligations or which, under the law governing the Contract,
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Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
entitles the Parties to be released from further performance of the Contract, then
upon notice by either Party to the other Party of such event or circumstance:
20.
19.7.1.
the Parties shall be discharged from further performance, without
prejudice to the rights of either Party in respect of any previous breach of
the Contract, and
19.7.2.
the sum payable by the Employer to the Contractor shall be the same as
would have been payable under Clause 19.6 [Optional Termination,
Payment and Release] if the Contract had been terminated under Clause
19.6 (Optional Termination, Payment and Release.)
CLAIMS, DISPUTES, CONCILIATION AND ARBITRATION
20.1.
Procedure for Claims:
If the Contractor intends to claim any additional payment under any clause of
these Conditions or otherwise, the Contractor shall give notice to the Engineer as
soon as possible and in any event, within 28 days of the start of the event giving
rise to the claim.
The Contractor shall keep such contemporary records as may be necessary to
substantiate any claim either on the Site or at any other location acceptable to
the Engineer. Without admitting the Employer's liability, the Engineer shall on
receipt of such notice, inspect such records and may instruct the Contractor to
keep further contemporary records. The Contractor shall permit the Engineer to
inspect all such records and shall (if instructed) submit copies to the Engineer.
Within 28 days of such notice or such other time as may be agreed by the
Engineer, the Contractor shall send to the Engineer an account, giving detailed
particulars of the amount and basis of the claim. Where the event giving rise to
the claim has a continuing effect, such amount shall be considered as interim.
The Contractor shall then, at such intervals as the Engineer may reasonable
require, send further interim accounts giving the accumulated amount of the
claim and any further particulars. Where interim accounts are sent to the
Engineer, the Contractor shall send a final account within 28 days of the end of
the effects resulting from the event. If the Contractor fails be comply with this
clause, he shall not be entitled to claim any additional payment.
20.2.
Payment for Claims
The Contractor shall be entitled to have included in any interim payment
certificate such amount for any claim as the Engineer considers due, after taking
approval from the Employer. If the particulars supplied are insufficient to
substantiate the whole of the claim the Contractor shall be entitled to payment for
such part of the claim as has been substantiated.
20.3.
No Legal Action Till Dispute Settlement Procedure is Exhausted
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Conditions of Contract for Car Shelter works
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Any and all Disputes shall be settled in accordance with the provisions of Clause
20. No action at law concerning or arising out of any Dispute shall be
commenced unless and until all applicable Dispute resolution procedures set out
in Clause 20 shall have been finally exhausted in relation to that Dispute or any
Dispute out of which that Dispute shall have arisen with which it may be or may
have been connected.
20.4.
Notice of Dispute
A Dispute shall be deemed to arise when one party serves on the other party a
notice in writing (herein called a “Dispute of Notice”) stating the nature of the
Dispute provided that no such notice shall be served later than 28 days after the
completion of the Defects Liability Period.
20.5.
Two Stages for Dispute
Disputes shall be settled through two stages:
20.6.
20.5.1.
Conciliation procedures as established by “The Arbitration and
Concialition Act-1996” (as amended from time to time) and in
accordance with this clause.In the event thisprocedure fails to resolve
the Dispute then:
20.5.2.
Arbitration procedures undertaken as provided by “The Arbitration and
Conciliation Act-1996”(as amended from
time to time) and in
accordance with this Clause.
Conciliation
Within 60 days of receipt of Notice of Dispute, either party shall refer the matter
in Dispute to Conciliation. Conciliation proceedings shall be initiated within 30
days of one party inviting the other in writing to Conciliation. Conciliation shall
commence when the other party accepts in writing this invitation. If the invitation
is not accepted then Conciliation shall not take place. If the party initiating
Conciliation does not receive a reply within 30 days from the date on which he
sends the invitation he may elect to treat this as a rejection of the invitation to
conciliate and inform the other party accordingly. The Conciliation shall be
undertaken by one Conciliator selected from a panel of Conciliators maintained
by the Employer. The Conciliator shall assist the parties to reach an amicable
settlement in an independent and impartial manner.
20.7.
Conciliation Procedure
The Employer shall maintain a panel of Conciliators, who shall be from serving or
retired Engineers of Government Departments or of Public Sector Undertakings.
Out of this panel a list of three Conciliators shall be sent to the Contractor who
shall choose one of them to act as Conciliator and conduct Conciliation
proceedings in accordance with "The Arbitration and Conciliation Act - 1996”
India.
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Conditions of Contract for Car Shelter works
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There will be no objection if Conciliator so nominated is a serving employee of
CMRL who would be deputy level officer and above. The Employer and the
Contractor shall in good faith co-operate with the Conciliator and in particular,
shall endeavour to comply with requests by the Conciliator to submit written
materials, provide evidence and attend meetings. Each party may, on his own
initiative or at the invitation of the Conciliator, submit to the
Conciliator suggestions for the settlements of the Dispute. When it appears to the
Conciliator that there exist elements of a settlement which may be acceptable to
the parties, he shall formulate the terms of a possible settlement and submit
them to the parties for their observations. After receiving the observations of the
parties, the Conciliator may reformulate the terms of a possible settlement in the
light of such observations. If the parties reach agreement on a settlement of the
dispute, they may draw up and sign a written settlement agreement. If requested
by the parties, the Conciliator may draw up, or assist the parties in drawing up
the settlement agreement.
When the parties sign the settlement agreement, it shall be final and binding on
the parties and persons claiming under them respectively.
The Conciliator shall authenticate the settlement agreement and furnish a copy
thereof to each of the parties. As far as possible the conciliation proceedings
should be completed within 60 days of the receipt of notice by the Conciliator.
The parties shall not initiate, during the conciliation proceedings, any arbitral or
judicial proceedings in respect of a Dispute that is the subject matter of the
conciliation proceedings.
20.8.
Termination of Conciliation proceedings
The conciliation proceedings shall be terminated:
20.8.1.
by the signing of the settlement agreement by the parties on the date of
agreement; or
20.8.2.
by written declaration of the Conciliator, after consultation with the
parties to the effect further efforts at conciliation are no longer justified,
on the date of declaration; or
20.8.3.
by a written declaration of the parties to the Conciliator to the effect that
the conciliation proceedings are terminated, on the date of declaration; or
20.8.4.
by a written declaration of a party to the other party and the Conciliator, if
appointed, to the effect that the conciliation proceedings are terminated,
on the date of declaration.
Upon termination of the conciliation proceedings, the Conciliator shall fix the
costs of the conciliation and give written notice thereof to the parties. The costs
shall be borne equally by the parties unless settlement agreement provides for a
different apportionment. All other expenses incurred by a party shall be borne by
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Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
that party.
20.9.
Arbitration
If the efforts to resolve all or any of the dispute through conciliation fails, then
such disputes or differences, whatsoever arising between the parties, arising out
of touching or relating to construction / manufacture, measuring operation or
effect of the contract or the breach thereof shall be referred to Arbitration in
accordance with the following provisions:
20.9.1.
Matters to be arbitrated upon shall be referred to a sole Arbitrator if the
total value of the claims is up to Rs.10 million and to a panel of three
Arbitrators if total value of claims is more than Rs.10 million. The
Employer shall provide a panel of three Arbitrators which may also
include CMRL officers for the claims up to Rs.10 Million and a panel of
five Arbitrators which may also include CMRL officers for claims of more
than Rs.10 million. The Contractor shall have to choose the sole
Arbitrator from the panel of three and / or one Arbitrator from the panel of
five in case three Arbitrators are to be appointed.
The Employer shall also choose one Arbitrator from this panel of five and the two
so chosen will choose the third Arbitrator from the panel only. The Arbitrators
shall be appointed within a period of 60 days from the date of receipt of written
notice/demand of appointment of Arbitrator from either party.
Neither party shall be limited in the proceedings before such Arbitrators to the
evidence or arguments put before the Engineer for the purpose of obtaining his
decision. No decision given by the Engineer in accordance with foregoing
provisions shall disqualify him from being called as a witness and giving evidence
before the Arbitrators on any matter, whatsoever, relevant to Dispute or
difference referred to Arbitrators. The arbitration proceedings shall be held in
Chennai only. The language of proceedings that of documents and
communication shall be English.
20.10.
20.9.2.
The Employer at the time of offering the panel of Arbitrator(s) to be
appointed as Arbitrator shall also supply the information with regards to
the qualifications of the said Arbitrator nominated in the panel along with
their professional experience, phone numbers and addresses to the
Contractor.
20.9.3.
The award of the sole Arbitrator or the award by majority of three
Arbitrators as the case may be shall be binding on all parties.
Interest on Arbitration Award
Where the arbitral award is for the payment of money, no interest shall be
payable on whole or any part of the money for any period, till the date on which
the award is made.
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Conditions of Contract for Car Shelter works
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20.11.
Cost of Arbitration
The cost of arbitration shall be borne by the respective parties. The cost shall,
inter alia, include the fees of the Arbitrator(s) as per rates fixed by the Employer
from time to time.
20.12.
Jurisdiction of Courts
Where recourse to a Court is to be made respect of any matter, the Court at
Chennai shall have the exclusive jurisdiction to try all disputes between the
parties.
20.13.
Suspension of Work on Account of Arbitration
The reference to Conciliation / Arbitration shall proceed notwithstanding that the
works shall not then be or be alleged to be complete, provided always that the
obligations of the Employer, Engineer and the Contractor shall not be altered by
reasons of arbitration being conducted during the progress of the works. Neither
party shall be entitled to suspend the work or part of the work to which the
dispute relates on account of arbitration and payments to the Contractor shall
continue to be made in terms of the Contract.
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Conditions of Contract for Car Shelter works
APPENDIX - 1
Proforma of Bank Guarantee for Earnest Money Deposit
Whereas, ………………………………………………………… (hereinafter called “the Tenderer”) has
submitted its tender dated, ------------------------- for the “PROPOSED CONSTRUCTION OF THE CAR
PARKING SHELTER,ATCMRL, KOYAMBEDU DEPOT CHENNAI 107 TAMILNADU” hereinafter called
“the tender”.
KNOW ALL MEN, by these presents, that we, …………………………………………. , having our
registered office at, . . . . . . . (hereinafter called “the Bank”), are bound unto, the Chief General Manager
(EC), Chennai Metro Rail Ltd, KoymbeduDept,Koyambedu
Chennai 600 107,(hereinafter called the
“Employer”), in the sum of INR…………. ( Indian Rupees…………………………………………………
only), for which, payment, well and truly to be made, to the said “Employer, the Bank binds itself, its
successors, and assigns by these presents.
Sealed with common seal of the said Bank, this ……………… day of …………. 2015.
The Conditions of the obligation are :
a)if the Tenderer , withdraws his tender, during the period of tender validity.
b)if the Tenderer fails to accept the corrections of his errors in the tender documents as
determined by the “Employer”
c)If the Tenderer having been notified of the acceptance of his tender by the “Employer” during the period
of validity of tender :
i)fails or refuses to execute the Form of Agreement.
ii)fails or refuses or neglects to furnish the Performance Bank Guarantee.
We undertake to pay to the “Employer”, the above amount, upon receipt of his, first written demand,
without the “Employer, having to substantiate his demand, provided that in his demand the “Employer“,
will note, that the amount claimed by him, is due to him, owing to the occurrence of any of the above
conditions, specifying the occurred condition or conditions.
This guarantee will remain in force up to and including the date, thirty (30) days after the date of expiry of
the period of tender validity, and any demand in respect thereof should reach the Bank not later than the
date of expiry of this guarantee.
Signature of the Bank
Signature of Witness
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Chennai Metro Rail Ltd,
Conditions of Contract for Car Shelter works
Name of Witness
Address
83
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
APPENDIX - 2
ARTICLES OF AGREEMENT
(FORMAT)
ARTICLES OF AGREEMENT made on this …...…. day of …........... 20015 between M/s………………,
The Chief General Manager (EC)CMRL,KoyambeduDepot,Koyambedu, Chennai 600 8107, Tamil Nadu,
India, (hereinafter called "the Employer or the Employer") of the one part on behalf of the President of
India,New Delhi.and.................................................................... of the other part, whose registered office
is situated at,………………………………………………(hereinafter called “the Contractor )
WHEREAS the Employer is desirous of to do “PROPOSED CONSTRUCTION OF CAR PARKING
SHELTER AT CMRL KOYAMBEDU , DEPOT, KOYAMBEDU CHENNAI, TAMILNADU”, (hereinafter
called "the Work"), and has caused drawings and Bill of Quantities showing and describing the work to be
done as prepared by or under the direction of Consultant, M/s. C.R. NarayanaRao, Architects &
Engineers, Old No. 5, New No. 10, Karpagambal Nagar, Luz, Mylapore, Chennai ‑ 600 004, [hereinafter
referred to as the “Employer’s Personnel“].
AND WHEREAS the said drawings numbered, hereinafter referred to as “the Contract / Tender drawings”,
as per list attached to the Tender document covering conditions, the specification and the Bill of
Quantities, have been signed by or on behalf of the parties hereto.
AND WHEREAS the Contractor has furnished Bank Guarantee for a sum of INR.………………. ( Indian
Rupees …………………………………………. only) as Performance Bond valid from the date of
commencement of work till the end of Defects Liability Period of 730 days from the date of taking over the
work by the Employer with provision for direct revalidation of the Bond, on demand if so required by the
Employer, for due performance of this Agreement.
AND WHEREAS the Contractor, has supplied the Employer with a fully priced copy of the said Bill of
Quantities (which copy is hereinafter referred to as "the Contract Bills") AND WHEREAS the Contract
/Tender Drawings and the Contract Bills have been signed by or on behalf of the parties hereto.
NOW IT IS HEREBY AGREED AS FOLLOWS:
1. For the consideration hereinafter mentioned, the Contractor will, upon and subject to the Conditions
annexed, carry out and complete the Work shown upon the Contract / Tender Drawings and described by
,or referred to, in the Contract Bills and in the said Conditions.
2.The Employer will pay the Contractor a sum of INR ……. (Indian Rupees……………………….… only)
(hereinafter, referred to as "the Contract Sum") or such other sum as shall become payable hereunder at
the times and in the manner specified in the said Conditions.
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Conditions of Contract for Car Shelter works
3. The term "the Employer’s Personnel" in the said Conditions shall mean the said M/s.C.R.
NarayanaRaoor in the event of his ceasing to be the Employer’s Representative for the purpose of this
Contract, such other person as the Employer shall nominate for that purpose not being a person objected
to by Contractor, for reasons considered to be sufficient by an Arbitrator appointed in accordance with
Article-.9. Provided always, that no person subsequently appointed to be the Employer’s Representative
under this clause shall be entitled to disregard or overrule any certificate or opinion or decision or
approval or instruction given or expressed by the Employer’s Representative(s) for the time being.
4. The said Condition and Appendix thereto shall be read and construed as forming part of this
Agreement and the parties hereto shall respectively abide by and submit themselves to the Conditions
and perform the agreements on their parts respectively in such Conditions contained.
5. The plans, agreement and documents mentioned herein, shall form part of this Contract.
6.The Contract is not a lump sum contract, but an item rate contract to carry out the work in respect of
Construction and associated works. The Contractor shall be paid for the actual quantity of work done as
measured at site at the accepted rate contained in the Bill of quantities and Probable quantities, or as
provided in the said Conditions.
7. The Employer reserves to himself the right of altering the Drawings and nature of the work by adding
to or omitting any items of work, or having portions of the same carried out without prejudice to this
Contract. The individual quantities can vary to any extent, however the scope and extent of changes that
can be ordered by the Employer will be limited to +/- 30% of the contract sum, and the Contractor shall
not be entitled to any compensation or claim due to such change (s) / Order (s) by the Employer. The
Contractor will only be paid for the actual quantity of works done, payable at the accepted unit rates.
8. All differences and disputes arising between the Employer / Consultant, on his behalf, and the
Contractor, either during the progress or after completion or abandonment of works, shall be settled by
referring to Arbitration, as detailed in Clause-20 of Conditions of Contract. If the award issued by
Arbitrators is not acceptable, the Contractor / Employer has to approach the court as specified in the
contract document elsewhere.
9. Time shall be considered as the essence of this Contract and the Contractor hereby agrees to
commence the work within a period of ten days from the date of issue of Letter of Award as provided for
in the said Conditions, and to complete the entire work within a period of3 months thereof subject
nevertheless to the provisions for extension of time.
10. All payments by the Employer, under this contract will be made only through Banking Channel at
Chennai in Indian Rupees only.
11. All disputes arising out of, or in any way connected with this Agreement, shall be deemed to have
arisen at Chennai and only Courts in Chennai shall have jurisdiction over them.
12. That the several parts of this Contract, have been read by the Contractor and fully understood by the
Contractor.
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Conditions of Contract for Car Shelter works
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Signature Clause
Chief General Manager (EC)
Chennai Metro Rail Limited
Admin. Building, CMRL Depot
Poonnamallee High Road ,
Koyambedu, Chennai - 600107
Contractor
Signed and
Delivered By
…………………………………..
……………………
Name & Designation
……………………………………
……………………
Address
……………………………………
……………………
WITNESSES :
1)
2)
Signature
……………………………………
……………………
Occupation
……………………………………
……………………
Address
……………………………………
……………………
Signature
……………………………………
……………………
Occupation
……………………………………
……………………
Address
……………………………………
……………………
The COMMON SEAL OF ………............................................... was hereunto affixed pursuant to the
resolutions passed by its Board of Directors, at the meeting held on .....………..
In the presence of
:
(1) Name and Designation: …………………………………….
(2) Name and Designation: …………………………………….
If the Contractor signs under its common seal, the signature clause, should correspond, with the sealing
clause , in the Articles of Association.
Directors who have signed, these presents in token thereof , in the presence of :
(1) Name and Designation: ……………………………………..
(2) Name and Designation:………………………………………
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Conditions of Contract for Car Shelter works
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APPENDIX- „3‟
FORM OF PERFORMANCE GUARANTEE
1.In consideration of the Chief General Manager, ( EC ) CMRL,Koyambedu Chennai 107, Tamil Nadu,
India,. (hereinafter, called “Employer” having agreed to allow M/s. ……………………….. (hereinafter
called, “the said Contractor(s)”) from the demand under the terms and conditions of an Agreement No. .
. . . . . . . . . . . ., for the work of “Proposed Construction of Car parking Shelter at
KoyambeduDepot,KoyambeduChennai 600 107., (hereinafter called “the said Agreement” for furnishing
Performance Bond for the due fulfillment, by the said Contractor(s) of the terms and conditions in the
said Agreement, by production of a BANK GUARANTEE for INR.. . . . . . . . ( Indian Rupees.. . . . . . . . . .
. only). We, the . . . . . . . . . . . . . (Name of the Bank) having our Head Office at ,. . . . . . . . . . . and
having branch at,. . . . . . . . . .
referred to as “the Bank” at the request of M/s. ….. . . . . . . .
Contractor(S), do hereby undertake to pay to the Employer an amount not exceeding INR.... . . . . . ., on
demand by the Employer.
2.We, . . . . . . . . . . . . . . . . . . . . (Name of the Bank) . . . . . . . . Branch, do hereby undertake to pay the
amounts due, and payable under this guarantee without any demur, merely on a demand from the
Employer, stating that the amount claimed is required to meet the recoveries due or likely to be due, from
the said Contractor(s). Any such demand made on the Bank shall be conclusive as regards the amount
due, and payable by the Bank under this guarantee. However, our liability under this guarantee shall be
restricted to an amount not exceeding, INR... . . . . . . . ( Indian Rupees.. . . . . . . . only).
3.We undertake to pay to the Employer the amount due under this Guarantee so demanded,
notwithstanding any dispute or disputes raised by the Contractor(s), in any suit or proceeding pending
before any Court, or Tribunal, relating thereto, our liability under this present
being absolute and
unequivocal.
The payment so made by us under this bond shall be a valid discharge of our liability for payment thereunder.
4. We , . . . . . . . . . . . . (Name of the Bank) . . . . . . . . .. , Branch, further agree, that the guarantee herein
contained shall remain in full force and effect during the period, that would be taken for the performance
of the said agreement, and that it shall continue, to be enforceable till the dues of under or by virtue of,
the said agreement have been fully paid and its claims satisfied or discharged ,or till the Engineer in
charge on behalf of the Employer certifies that the terms and conditions of the said Agreement have
87
Conditions of Contract for Car Shelter works
Chennai Metro Rail Ltd,
been fully and properly carried out by the said Contractor(s) accordingly discharges this guarantee.
5.We, . . . . . . . . . . (Name of the Bank) . . . . . . . . ,Branch, further agree with the Employer, that the
Employer,
shall have the fullest liberty, without our consent and without affecting in any manner ,our
obligations hereunder, to vary any of the terms, and conditions, of the said Agreement ,or to extend time
of performance, by the said Contractor(s), from time to time, or to postpone, for any time, or from time to
time, any of the powers exercisable, by the Employer ,against the said Contractor(s), and to forbear or
enforce, any of the terms and conditions, relating to the said agreement, and we shall not be relieved,
from our liability, by reason of any such variation or extension of time
being granted to the said
Contractor(s), or for any forbearance act or omission, on the part of Employer or any indulgence by the
Employer to the said Contractor(s), or by any such matter or thing whatsoever which under the law
relating to sureties would, but for this provision have effect of so relieving us.
6.This guarantee will not be discharged, due to the change in the constitution of the Bank or the
Contractor(s).
7.We hereby waive the necessity of your demanding, the Contractor, before presenting us, with the
demand.
8.We, . . . . . . . . . . . . (Name of the Bank) . . . . . . Branch , lastly undertake not to revoke this guarantee
except with the previous consent, of the Employer in writing.
9.This guarantee shall be valid upto . . . . . . . . . . . . , not –withstanding, anything contained hereinbefore ,
our liability against this guarantee, is restricted to INR. . . . . . . ( Indian Rupees.….. …. . only) ,and it will
remain in force till . . . . . ………..) ,unless, a claim or demand in writing is made against us under this
guarantee before the expiry of six months from the aforesaid date that is before . . . . . . . of
. . . .
……….. …. ( . . ………………..) ,all your rights under the said guarantee shall be forfeited and, we shall
be relieved and discharged from all liability hereunder.
Dated the
day of
………
for (Name of the Bank)
Branch.
88
Chennai Metro Rail Ltd,
Conditions of Contract for Car Shelter works
APPENDIX - 4
(In a Stamp Paper of ………../-)
AFFIDAVIT
We have submitted Bank Guarantee, for the work of . . . . . . . . . . . . . . . . . . . . . . . . . . .
Agreement No. ---------------- from ------------(Name of the Bank) ------------------ Branch, to The Chief
General Manager (EC) , Chennai Metro Rail Ltd, Koyambedu, Chennai 600 107, Tamil Nadu, with a view
to furnish Performance Bond. This Bank Guarantee expires on .. . . …….. We undertake, to keep the
validity, of the Bank Guarantee in force by getting it, extended from time to time, at our own initiative, up
to a further period of six months or as directed by the The Chief General Manager, (EC)Chennai Metro
Rail Ltd, Chennai -107 . We also indemnify, The Chief General Manager, (EC) CMRL,,Koyambedu,
Chennai 600 107, against any losses arising out of non-encashment of the Bank Guarantee, if any.
Notary Public Signature
Authorised Signature of the Contractor
89
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Conditions of Contract for Car Shelter works
APPENDIX - 5
PROFORMA OF BANK GUARANTEE FOR MOBILISATION ADVANCE PAYMENT
In consideration of The Chief General Manager (EC), Chennai Metro Rail Ltd, Koyambedu, Chennai
600 107, Tamil Nadu, India (hereinafter called the “Employer “, having agreed to pay mobilisation
advance, under the terms and conditions of letter of acceptance, No............................... dated
……...........,
made
between
M/s.
……………................................……………………………………………………………….
,a
company
having
its
registered
office,
at
..............................................................................
,in
..........................................................
in
the state of .................... , (hereinafter called "the said CONTRACTOR", which expression, shall unless,
the context required otherwise, include its successors and assigns), for the WORK “Proposed
Construction of Car parking Shelter at CMRL KoyambeduDepot,Koyambedu, Chennai 600 107.,
TAMILNADU” by "the said CONTRACTOR",
on production
of a Bank Guarantee, for INR.
............................. (Indian Rupees ........................................................only).
We, ............................................................ (hereinafter referred to "as the Bank" at the request of
M/s..................................................... , do hereby undertake to pay to the Employer an amount not
exceeding INR................... (Indian Rupees..............................…………………………………...
................................................................. only).
We, ................................................ do hereby undertake. to pay the amounts due. and payable under this
guarantee. without any demur, merely on a demand from the Employer, stating that the amount claimed
is required to meet the recoveries due or likely to be due from the said CONTRACTOR. Any such
demand made on the Bank shall be conclusive as regards the amount due and payable by the Bank
under this guarantee. However, our liability, under this guarantee shall be restricted to an amount not
exceeding
INR.
...........................
(Indian
Rupees
..................................
............................................................... only).
We undertake to pay to the Employer any money so demanded ,not withstanding any dispute or disputes
raised by the CONTRACTOR in any suit or proceeding pending before any Court or Tribunal relating
thereto, our liability under this present being absolute and unequivocal.
The payment so made, by us under this guarantee shall be a valid discharge of our liability or payment
there-under and the CONTRACTOR shall have no claim against us for making such payment.
This Guarantee shall remain in force and effect so long as the said advance or any part thereof,,
remaining outstanding ,and shall expire and become ineffectual only after the recovery of the entire sum
of INR..________________________ covered by the Guarantee.
The Guarantee shall come into force from the date the CONTRACTOR receives from the Employer the
said advance.
90
Chennai Metro Rail Ltd,
Conditions of Contract for Car Shelter works
This Guarantee will not be discharged due to change in the constitution of the bank or the
CONTRACTOR.
We, .................................................... ,lastly undertake not to revoke this guarantee except with the
previous consent of the Employer in writing.
This Guarantee shall be valid upto ................................, unless extended on demand by the Employer.
Notwithstanding anything mentioned above, our liability against this guarantee is restricted to
INR............................. (Indian Rupees ........................................……….
................................... only).
Witness:
For and on behalf of the Bank
:
Designation
91
CHENNAI METRO RAIL LIMITED
(A JOINT VENTURE OF GOVERNMENT OF INDIA AND GOVERNMENT OF
TAMILNADU)
PROPOSED CONSTRUCTION OF CAR SHELTER, AT CMRL KOYAMBEDU
DEPOT
CHENNAI 600 107
TECHNICAL TENDER – PART - 1B - TECHNICAL SPECIFICATION
DATE FOR SUBMISSION OF TENDER ON 07- 04- 2015 at 15.00 Hours
DATE FOR OPENING OF TECHNICAL TENDER ON 07-04-2015 at 15.30 Hours
TO BE SUBMITTED TO:
The Chief General Manager(EC)
Chennai Metro Rail Limited
Admn. Building, CMRL Depot
Poonnamallee High Road ,
Koyambedu, Chennai - 600107
TENDER SUBMITTED BY:
M/s._________________________
Address_____________________
____________________________
Chennai Metro Rail Ltd.,
Technical Specification
SECTION – 1
PARTICULAR SPECIFICATION
TABLE OF CONTENTS
1.0
GENERAL
2.0
THE SITE
3.0
THE WORKS
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SECTION – 1
PARTICULAR SPECIFICATION
1.0
GENERAL
1.1.1
Scope and Applicability
This Particular Specification gives the project specific special requirements for the of
Construction of Car sheler at Koyambedu, Chennai - 600107. herein after referred to as the
Works, except where otherwise modified or amended within the Contract. Reference
must be made to the General Specification for general requirements and to the
appropriate Technical Specification for the corresponding technical requirements of all
work.
1.1.2
The Specifications listed in paragraph 1.1.3 (below) have been added for guidance of
the Employer / Employer‟s Personnel responsible for carrying out the Works who shall
however ensure that all aspects of the construction of the Works shall comply with
Local Standards, Laws and Regulations and accepted good practice in India.
The Indian Standards referred to shall be subject to its relevance as appropriate
currency and British Standards that are referred herein shall correspond to equivalent
Indian Standards (IS) that apply.
1.1.3
1.2
The following specifications shall be applicable to the work in addition to the Technical
Specification provided for other sub-heads to the masonry, floor etc. pertains to civil and
structural works in general.
a)
Particular specification
b)
General specification
c)
Technical specification for instrumentation and monitoring
Statutory Bodies
The requirement of statutory bodies connected with the project work shall be complied with by
taking timely action without causing any hold up in completion of work as per time schedule.
1.3
Contractor’s Responsibility
Apart from carrying out necessary surveying and setting out of the buildings and equipment
foundations wherever required collecting all materials, equipment, plant, labour, consumables,
tools and services necessary for proper execution, fabrication, ensuring quality control by
conducting required tests at the appropriate time and intervals during the execution, disposal of
excavated material as instructed, carrying out all associated works like removal, disposal of the
debris, getting out, remove temporary facilities on completion of the works, clearance from local
bodies / authorities for commissioning of all installation / equipment of the project work shall be
obtained and furnished before taking over of the completed work, all within the quoted rates
only. Machinery operators, drivers should have valid license.
Child labours are strictly prohibited.
Top most attention shall be paid to the Health, safety of workers and Environment and the
same shall be monitored on daily basis by a qualified and experienced personnel in HSE. .A
LMV (PASSENGER VEHICLE) shall be kept available round the clock as ambulance with
drivers on shift basis.
1.4
Rates of wages and Conditions of Labour
The contractor shall make himself aware of all labour regulations and their impact on the cost
and build up the same in the contract price. During the contract period no extra amount in this
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Technical Specification
regard shall be payable to contractor for whatsoever reason including any revision of rate
payable to the labour due to revision of rates payable in Minimum Wages Act. Labour provided
by the contractor, either directly or through sub-contractor, for the exclusive use of the
employer of the engineer, shall for the purpose of this sub-clause, be deemed to be employed
by the contractor. In the event of default being made in the payment of any money in respect of
wages of any person employed by the contractor or any of its sub-contractors of any tier in and
for carrig out this contract and if a claim therefore is filled in the office of the labour authorities
and proof thereof is furnished to the satisfaction of the labour authorizes, the employer may,
failing payment of the said money by the contractor, make payment of such claim on behalf of
the contractor to the said labour authorities and any sums so paid shall be recoverable by
Employer from the contractor.
2.0
THE SITE
2.1
Description of the site
2.2
2.1.1
The site is located at CMRL,Koyambedu depot.
2.1.2
The full report of the site investigation may be examined during office hours and by
prior appointment at the Employer / Employer‟s Personnel.
Site Conditions
2.2.1
2.3
2.4
Monitoring
2.3.1
The Contractor shall allow for providing and maintaining the check points and settlement
monitoring points as directed, at the site, the constructed works and adjacent structures /
retaining walls and for monitoring them at the frequencies shown. Reference shall be
made to the Technical Specification for Instrumentation and Monitoring. Results shall be
reported in MS Project / Primevera and graphical format weekly.
2.3.2
Should the monitoring points mentioned in 2.3.1 (above) be existing and serviceable,
the Contractor shall conduct an initial conditional and full monitoring survey on site
possession and shall thereafter maintain and survey those points as specified.
2.3.3
All adjacent roads, structures and utilities that may be affected by the works shall be
surveyed and monitored prior to the commencement of the works to provide a baseline
set of readings. In particular, monitoring points shall be installed on and adjacent to
the railway and hospital mentioned in 2.4.1 (below).
Interfaces – Adjacent Sites, Ground, Roads and Structures
2.4.1
2.5
The Contractor shall forthwith notify the Employer / Employer‟s Personnel in writing
should conditions encountered on the site be significantly different from those generally
described in the Contract Documents.
Adjacent to the site there is on western side.The works, including all associated
temporary works, shall be designed and constructed to minimise the effect on all
adjacent roads, structures and utilities and the Contractor shall take all necessary
precautions in this respect.
Supervision
The supervision requirements in terms of grades and numbers of Employer / Employer‟s
Personnel etc. shall be as provided in the Conditions of Contract.
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3.0
THE WORKS
3.1
Description
Technical Specification
The project is for the Construction Car Shelter at Koyambedu, Chennai - 600107. including all
facilities
Key Elements
3.3
Interfaces – Co-ordination and Management
The Contractors role and responsibility in Interface Management in terms of management and
“team-leading” of Sub-contractors particularly with regard to shared access, work sequencing,
information requirements and forward planning etc. Long lead-in and procurement times for
imported items to be identified to the Contractor to assist his forward planning shall be as
provided in the Conditions of Contract.
3.4
Specialist Trades
Full method statements on a trade-by-trade basis for all trades not covered in the
accompanying TS shall be as provided in the Technical Specification of respective trade should
include any requirements in excess of those specified in the Technical Specification.
3.5
Samples
3.6.1 The Contractor shall provide all samples required by the Specification for the approval of
the Employer / Employer‟s Personnel and provide safe storage including racks for the display,
reference and inspection of approved samples.
3.6
Guarantees
3.7.1
The Contractor shall provide in a format acceptable to the Employer / Employer‟s
Personnel the following specific item guarantees
3.7.1.1 Caulking materials, sealant, hydrophilic strips.
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SECTION - 2
GENERAL SPECIFICATION
TABLE OF CONTENTS
1.0
GENERAL
2.0
SCOPE OF WORK
3.0
CONTRACT DRAWINGS
4.0
SITE INFORMATION
5.0
SETTING OUT
6.0
MATERIALS
7.0
STORAGE OF MATERIALS
8.0
WORKMANSHIP
9.0
PLANT
10.0
POLLUTION & ENVIRONMENTAL PARTICULARS
11.0
METHODOLOGY AND SEQUENCE OF WORK
12.0
TESTING OF WORK AND MATERIALS
13.0
FIELD LABORATORY
14.0
PROTECTION
15.0
CLEARING OF SITE
16.0
PREPARATION OF BUILDING FOR OCCUPATION
17.0
RATES
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Technical Specification
SECTION – 2
INSTRUMENTATION AND MONITORING
TABLE OF CONTENTS
1.0
GENERAL
2.0
INSTRUMENTATION USED IN MONITORING
3.0
MONITORING OF CONSTRUCTION.
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SECTION – 2
INSTRUMENTATION & MONITORING
1.0
GENERAL
1.1
Scope
1.1.1 This Specification gives the technical requirements for instrumentation for and
monitoring Construction of Car Shelter, Koyambedu, Chennai – 600107 except where
otherwise modified or amended within the Contract. All general requirements are given
in the accompanying General Specification and Particular Specification covering, but
not limited to definitions, Contractor‟s responsibilities, site conditions, site safety,
construction programme, quality control, materials, testing, site transportation and
accommodation, temporary works, maintenance and as-built drawings.
2.0
INSTRUMENTATION USED IN MONITORING
2.1
General
2.2
2.1.1
Prior to commencement of any work the Contractor shall be responsible for installing
instrumentation, comprising inclinometers, piezometers and standpipes, and building
and ground settlement points as shown on the drawings. The Contractor shall obtain
instrumentation equipment from an approved supplier. The Contractor may nominate a
specialist Sub-contractor for the instrumentation works to the prior approval of the
Client / Consultant.
2.1.2
The Contractor shall satisfy himself that the drill whole locations for the instrumentation
are free from existing services prior to commencement of drilling. In order to avoid any
utilities and services the required drill hole positions may be adjusted onsite to the
approval of the Client / Consultant. The Contractor shall be responsible for any
damage and any claims arising from such damage and shall make every effort to make
good the damage or have the damage made good forthwith.
2.1.3
The Contractor shall obtain any and all necessary permits and permissions required in
connection with drilling and excavation work for the purpose of instrumentation
installation.
2.1.4
Should the Contractor propose alternative locations and instrumentation for monitoring,
he shall submit a shop drawing of the proposal for the Client / Consultant‟s approval.
Inclinometer System Installation
2.2.1
Wherever instructed by the Client / Consultant the Contractor shall install inclinometers
in drill holes sunk for this purpose. The inclinometers shall be installed in accordance
with the written instructions of the Manufacturer of the equipment. These instructions
shall be submitted to the Client / Consultant for approval prior to the commencement of
installation.
2.2.2
Drill holes shall be sunk in “H” size unless otherwise specified by the Client /
Consultant. The rate of drilling shall be limited to prevent jamming of the casing.
Measurers to prevent jamming such as surging of the casing or the use of bentonite as
drilling fluid may be used where necessary with the approval of the Client / Consultant.
Where inclinometers are to be installed in any pile a 150 mm steel tube to the length
specified shall be firmly tied to the reinforcing cage or by other means as appropriate.
2.2.3
The back filling grout shall be a bentonite cement mix with strength comparable to that
of the surrounding soil.
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2.2.4
The Contractor shall submit full details of the proposed grout mix for the approval of the
Client / Consultant . When required by the Client / Consultant , the Contractor shall
perform trial mixes and tests such as laboratory unconfined triaxial compression tests
or vane shear tests to ensure the suitability of the proposed grout mix.
2.2.5
Prior to installation, the end edges and the keyways of the inclinometer tubings shall be
examined and the Contractor shall remove any damaged tubings and provide
replacements when required to do so by the Client / Consultant . The inclinometer
tubings shall be inserted into the drill hole inside the temporary casing. The top and
bottom of the inclinometer tubing shall be fitted with an end cap and all tubing
couplings shall be riveted connections. During connection of the tubings, the inserted
section shall be securely clamped at ground level and the next section connected to it.
All completed connections shall be sufficiently wrapped with sealing tape to prevent
ingress of grout. The tube shall be filled with water to overcome buoyancy.
2.2.6
After insertion of the inclinometer tubing, the hole shall be back filled by pumping grout
through a tremie pipe. All grout mix quantities shall be monitored and records shall be
submitted to the Client / Consultant with full details of the installation. Where required
by the Client / Consultant, the Contractor shall take samples of the grout being used for
curing and subsequent strength testing. The grout shall be pumped initially to fill the
top of the temporary casing. The casing shall then be extracted in such a manner that
the level of the grout inside the hole shall be at all times higher than the bottom of the
casing. In filling grout may be necessary, the adjustment shall be carried out during
the grouting work if the time required to extract the casing is considered to be too long.
2.2.7
The Contractor shall flush the tubings after installation to remove all solids and flush
again after two days.
Piezometer and Standpipe Installation
2.3.1
Piezometer
2.3.1.1 Where instructed by the Client / Consultant , the Contractor shall install
piezometers in drill holes sunk for this purpose. The drill holes shall be a
minimum of “N” size. Samples shall be taken as instructed for each drill hole.
The piezometer pipe shall be rigid PVC tubing not less than 19 mm nominal
bore. It shall be supplied and installed in not less than 3 m lengths except for
one shorter length as required to suit the total piezometer dimensions. The
tubes shall be joined together, and to the porous element, with approved
couplings and glue such that the joints remain water proof under the
anticipated head of water.
2.3.1.2 The tube shall be connected at its lower end, by a suitable PVC fitting, to a
piezometer tip. The tip shall be of rigid PVC perforated pipe, not less than 150
mm having an expanded polystyrene lining moulded to form an inner tube not
less than 13 mm bore and retained in position by a moulded flange or of
alternative design (such as a porous ceramic pot) to the approval of the Client /
Consultant . The piezometer tip shall have permeability of the order of 5 x 10
m/sec. The upper end of the tube shall be set in concrete and fitted with a
lockable surface box.
2.3.1.3 Where the depth of the completed hole is greater than the depth at which the
porous element and sand filter are to be installed, then the bottom of the hole
shall be grouted. The grout used shall consist of 1:1 cement : bentonite
prepared by adding sufficient water to form a pumpable grout. Sufficient grout
shall be placed in the hole using a tremie pipe reaching to the bottom of the
hole, such that the upper surface of grout shall be 1.5 m below the proposed
filter.
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2.3.1.4 A bentonite seal shall be formed using bentonite tables or balls of approved
manufacture, that are capable of forming an effective seal in the hole and
tamped in position with a suitable shaped tamper to form a homogeneous plug
to the hole. The level of the top of the plug shall be recorded.
2.3.1.5 The sand filter surround to the porous element shall be clean sand, falling
wholly between the limits of grading 1200 and 210 microns, and the volume of
the sand filter to be placed shall be recorded. The sand filter forming the
response zone shall extend from 0.5 m below the tip of the porous element to
1.0 m above the tip of the element.
2.3.1.6 In placing the sand the Contractor shall ensure that no sand adheres to the soil
n the sides of an unlined hole. Where there is water in a hole the Contractor
shall allow sufficient time for all the sand to settle and measurements of the
upper surface of the sand shall be taken from time to time to ensure this. The
final elevation of the top of this sand shall be recorded.
2.3.1.7 A bentonite seal shall be formed above the sand filter as for the lower seal in
2.3.1.4 (above) and the hole shall then be back filled with cement / bentonite
grout.
2.3.1.8 The Contractor shall submit to the Employer / Employer‟s Personnelfor
approval prior to the construction of the piezometer, samples of the bentonite
he intends to use.
2.3.2
Standpipes
2.3.2.1 Where instructed by the Employer / Employer‟s Personnelthe Contractor shall
install standpipes in drill holes sunk for this purpose. The drill holes shall be a
minimum of “N” size. Samples shall be taken as instructed for each drill hole.
2.3.2.2 The stand pipe installation shall be identical to the piezometer installation
described in 2.3.1 (above) except that :
2.3.3
a)
No upper bentonite seal shall be installed and the hole shall be back
filled with 10 mm single size gravel to a depth of 0.5 m below the
ground surface. The remaining hole shall then be filled with cement /
bentonite grout, a lockable surface box installed and
b)
The tube shall be capped at its lower end and perforated for its length
with 6 mm diameter holes for a minimum of 5% of its surface area.
The upper 1 m shall be free from such perforation.
Commissioning and Monitoring of Piezometers and Standpipes
2.3.3.1 Within three working days of the completion of the installation of any
piezometer or standpipe the Contractor shall carry out a response test to prove
the successful operation of the installation. The Contractor shall give the
Employer / Employer‟s Personnela minimum one working days notice prior to
such test and shall carry out the test in the following manner :
a)
Record water level in piezometer / standpipe.
b)
Fill the piezometer / standpipe tube to the top with water.
c)
Record the fall of the water level as a distance from the top of the tube
after the following elapsed time in minutes.
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2.3.3.2 The Contractor shall submit to the Employer / Employer‟s Personnelthe results
of all response tests within two working days of completion of each test.
2.4
Ground Surface and Building Settlement Point Installation
2.4.1
Ground surface settlement points
2.4.1.1 The Contractor shall install ground surface settlement points where instructed
by the Employer / Employer‟s Personnelas described in 2.4.1.2 (below).
2.4.1.2 A hole, of minimum dimensions 400 mm diameter and 600 mm deep (300 mm
deep in paved areas) shall be formed. The hole shall be back filled with
concrete and trimmed and levelled at ground surface. A 12 mm diameter
brass rod of length at least equal to the depth of the hole shall be placed
centrally and vertically within the hole containing wet concrete. The upper end
of the brass rod shall have a domed surface and shall protrude 3 mm above
the final level of the placed concrete.
2.4.1.3 The Contractor shall also install survey nails of approved design in locations as
instructed by the Client / Consultant .
2.4.2
Building settlement points
2.4.2.1 The Contractor shall install building settlement points where instructed by the
Employer / Employer‟s Personnelas described in 2.4.2.2 (below).
2.4.2.2 A hole, of dimensions 30 mm diameter and atleast 80 mm in length shall be
drilled into the wall or column. The hole shall be back filled with grout or
epoxy material to the approval of the Client / Consultant . A 19 mm anchor
socket shall be placed and supported centrally within the hole and shall have a
threaded protective cap, the face of which is level with the wall or column face.
A sample of the anchor socket and protective plug shall be submitted to the
Employer / Employer‟s Personnelfor approval, and the Contractor shall obtain
and use the approved materials.
2.5
Defective Instrumentation
2.5.1
All instrumentation installed shall be to the approval of the Client / Consultant . Any
instrument which, in the opinion of the Client / Consultant , cannot satisfactory serve the
purpose for which it is installed shall be repaired or replaced by the Contractor at no
extra cost to the Contract. All additional instrumentation shall be installed and functioning
to the satisfaction of the Employer / Employer‟s Personnelbefore construction of the work
commences.
3.0
MONITORING OF CONSTRUCTION
3.1
General
3.2
3.1.1
A comprehensive programme of monitoring of all construction operations and
instrumentation shall be carried out as part of this contract.
3.1.2
The clauses of this Specification, the requirements specified on the drawings and any
monitoring of construction carried out by the Employer / Employer‟s Personnelor his
representative, shall in no way relieve the Contractor of his responsibilities to prevent
damage to surrounding buildings, structures, roads or services as a result of his
working. The Contractor shall at all times take any precautions as he sees fit to
prevent untoward movement of the adjoining ground or property.
Monitoring Equipment
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3.2.1
The Contractor shall provide all necessary equipment required to monitor all
installations and shall list all such proposed equipment for the Client / Consultant s
approval prior to any installation.
3.2.2
All monitoring equipment shall be supplied by a reputable manufacturer acceptable to
the Employer / Employer‟s Personneland shall be installed and used by experienced
personal in accordance with the manufacturer‟s written instructions and best current
practice.
3.2.3
The same instruments shall be used each time the installations are monitored. In
particular only one inclinometer prove and readout unit shall be used unless otherwise
approved by the Client / Consultant .
3.2.4
All monitoring equipment shall be stored on site in controlled conditions as
recommended by the manufacturers or as otherwise agreed with the Client /
Consultant .
3.2.5
The equipment shall be calibrated to the approval of the Employer / Employer‟s
Personneland the results shall be submitted to the Employer / Employer‟s
Personnelprior to commencement of monitoring.
3.2.6
The equipment shall be adequately protected against damage or theft. The Contractor
shall immediately replace any equipment should it be necessary.
Monitoring of Installations
3.3.1
The Contractor shall carry out monitoring of ground and ground water variations during
construction in three sections as given in 3.3.1.1 to 3.3.1.3 (below).
3.3.1.1 Surface Movements
a)
Once daily throughout the course of the Contract.
3.3.1.2 Ground water Piezometers and Standpipes
a)
Only daily throughout the course of the Contract and
b)
On one designated day per week at times corresponding to high and
low tide throughout the course of the Contract.
3.3.1.3 Inclinometers
a)
3.4
3.5
Once in a weekly throughout the course of the Contract.
Readings and Reporting
3.4.1
The formats of all reports and record sheets required by this Specification shall be
submitted to the Employer / Employer‟s Personnelfor approval not more than seven days
after the award of the Contract.
3.4.2
The Contractor shall keep full details of all drilling and installation and submit a
complete record to the Employer / Employer‟s Personnelwithin two working days of
installation, is so directed..
3.4.3
The results of all monitoring shall be recorded and submitted in full graphical and / or
tubular form to the Employer / Employer‟s Personnelwithin one week of the readings
being taken, or at other intervals as agreed with the Engineer.
Pre-construction Survey
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3.6
3.7
Technical Specification
The Contractor is advised to inspect the condition of the surrounding buildings,
structures, roads and services and where necessary record the condition of the
structures and the finishes of the buildings in case of compliant with respect to possible
damage caused by the Works.
On Site Observation
3.6.1
The Contractor shall keep adjacent roads and property clear of equipment and spoil and
shall regularly inspect the surface of the ground, surrounding buildings, structures, roads
and services and shall report to the Employer / Employer‟s Personnelforthwith any signs
of subsidence or cracking.
3.6.2
The Contractor shall also keep the Site reasonably clear of equipment and spoil and
shall regularly inspect the surface of the ground and shall report to the Employer /
Employer‟s Personnelforthwith any signs of subsidence or cracking.
Undue Monitoring Readings and Suspension of Work
3.7.1
If one of the following observations is noted, the Contractor shall inform the Client /
Consultant forthwith and all disturbing works shall be suspended pending review.
3.7.1.1 Any undue settlement or a difference greater than 25 mm in the settlement point
readings or as otherwise directed by the Client / Consultant .
3.7.1.2 Any undue drawdown or a difference greater than 3 m of the dry season water
level in the Piezometer / Standpipe readings.
3.7.1.3 Any undue lateral movement or a difference greater than 1 in 300 in the
inclinometer readings.
3.7.1.4 Any sign of subsidence or cracking in the surrounding buildings, structures or
roads.
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SECTION – 3
GENERAL SPECIFICATION
1.00
GENERAL
These specifications are intended for general description of quality and workmanship of materials
and finished work. They are not intended to cover minute details. The work shall be executed in
accordance with best modern practices.
These specifications shall have precedence in case anything contrary to this is stated
anywhere in this document. The Employer / Employer‟s Personnel‟s decision shall be final on
any issues arising out of such discrepancies.
This specification shall be read in conjunction with the particular specifications for various items
of work the relevant drawings, construction logic, schedule of quantities and instructions to the
Contractors to ascertain in detail the type and amount of work covered under this scope. The
Contractor shall carefully acquaint himself with the general specifications, coordinate the same
with any other specifications forming a part of the contract document and determine his
contractual obligations or the execution of various items of work in accordance with good
Construction Management practice.
All works shall be carried out as per this specification, the respective work specifications and
the latest Indian Standards, Acts, Codes and best practices.
All standards, specifications, code of practice referred to are applicable and shall be
considered to be a part of this specification. In case of variation and discrepancy in condition
mentioned here, and in particular specifications, the Employer‟s representative interpretation
and discretion shall govern.
All applicable standards, specifications etc. and codes of practice mentioned in respective work
specifications shall generally be the latest editions, including all applicable official amendments
and revisions. A complete set of all these documents shall generally be available at site, with
the Contractor.
2.00
SCOPE OF WORK
The work to be carried out under the Contract shall consist of the various items as generally
described in the Tender Documents as well as in the Bill of Quantities furnished in the Tender
Documents.
The works to be performed shall also include all general works preparatory to the construction
of civil, structural, drawings and these specifications and further drawings and orders that may
be issued by the Employer‟s representative from time to time. The scope of work shall include
compliance by the Contractor with all general conditions of contract, whether specifically
mentioned or not in the various clauses of these specifications, all materials, apparatus, plant,
equipment, tools, fuel, water, strutting, timbering, transport, offices, stores, workshop, staff,
labour and the provision of proper and sufficient protective works, diversions, temporary
fencing lighting.
It shall also include safety of workers, first-aid equipment, suitable
accommodation for the staff and workmen, with adequate sanitary arrangements, the effecting
on maintenance of all insurance, the payment of all wages, salaries, fees, royalties, duties or
other charges arising out of the erection of works and the regular clearance of rubbish,
reinstatement and clearing up of the site as may be required completion of works safety of the
public and protection of the works and adjoining land, structures properties etc.
The contractor shall ensure that all actions are taken to build in quality assurance in the
planning and execution of works. The quality assurance shall cover all stages of work such as
setting out, selection of materials, selection of construction methods, selection of equipment
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and plant, deployment of personnel and supervisory staff, quality control testing, etc. The work
of building in quality assurance shall be deemed to be covered in the scope of the work.
The Contractor shall furnish, at least 15 days in advance, his programme of commencement of
item of work, the method of working he intends to adopt for various items of work. He shall
provide information regarding the details of the method of working, and equipment he proposes
to employ and satisfy the Employer / Employer‟s Personnel about the adequacy and safety of
the same. The sole responsibility for the safety and adequacy of the method adopted by the
Contractor will, however, rest on the Contractor, irrespective of any approval given by the
Employer / Employer‟s Personnel.
The Contractor shall strictly follow, at all stages of work, the stipulations contained in the Indian
Standard Safety Code and the provisions of the safety code and the provision of the safety rules
as specified in the General Conditions of the Contract for ensuring safety of men and materials.
Any approval, instructions, permission, checking, review, etc. whatsoever by the Employer /
Employer‟s Personnel, shall not relieve the Contractor of his responsibility and obligation
regarding adequacy, correctness, completeness, safety, strength, quality, workmanship, etc.
3.00
CONTRACT DRAWINGS
The Contract Drawings provided for tendering purposes shall be as contained in the Tender
Documents and shall be used as a reference and for guidance only.
The Contractor should visualise the nature and type of work contemplated and ensure that the
rates and prices quoted by him in the Bill of Quantities have due consideration of the qualitative
and quantitative variations, as may be found at the site and complexities of work involved
during actual execution/construction.
The Contract drawings will also include any other drawings which the Employer / Employer‟s
Personnel may issue from time to time during the currency of the contract.
“Issued for Construction” drawings will be issued to the Contractor during the progress of the
work and as further data becomes available to supplement the tender drawings.
“Issued for Construction” drawings will be revised and fresh revised copies issued to the
Contractor from time to time by the Employer / Employer‟s Personnel to adopt the work to the
final designs and to suit the physical conditions encountered during the progress of the work.
“Issued for Construction” drawings as issued by the Employer / Employer‟s Personnel shall
form part of this specification. Unless otherwise specified, the plans and specifications are
intended to include everything obviously requisite and necessary for the proper and entire
completion of the work and accordingly the work shall be carried out in completeness as
required whether each item is mentioned herein or not.
It shall be understood that drawings furnished to the Contractor shall be interpreted by the use
of given dimensions, and nomenclature only, and that the drawing shall not be scaled. Figured
dimensions on drawings are in all cases to be accepted in preference to scaled sizes and
drawings to a large scale shall take precedence over those to a smaller scale drawings. In
case of discrepancy the Contractor shall ask for clarification before proceeding with the work.
All dimensions shall be checked on site prior to execution.
In case of difference between drawings and specifications, the specifications shall govern. Any
thing mentioned in the specifications, and not shown on the drawings, or shown on the
drawings and not mentioned in specifications, shall be of like effect as if shown or mentioned in
both.
Shop drawings consisting of such detailed drawings as are not included in the contract
drawings or larger scale details of certain parts of the work indicated on the contract drawings,
shall be complete and shall contain all required detailed information as may be reasonably
required for satisfactory execution of the work. Prior to submittal for approval, the Contractor
shall be responsible for thoroughly checking all drawings whether prepared by him or by his
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sub-contractors to ensure that they comply with the intent and the requirements of the contract
specifications, and that they fit in with the overall building layout.
Examination and/or approval by the Employer / Employer‟s Personnel of any drawing or other
drawings or other documents submitted by the Contractor shall not relieve the Contractor of his
responsibilities or liabilities under the contract.
The approval of the drawings by the Employer / Employer‟s Personnel shall not be construed
as a complete dimensional check, but will indicate only that the general method of construction
and detailing is satisfactory. Approval of such drawings will not relieve the Contractor of the
responsibility for any errors or compliance with requirements of the contract plans and
specifications not will any discrepancy between shop drawings and contract plans, and
specifications constitute a basis for deviation from the requirements of the contract plans, and
specifications. The Contractor shall be responsible for the dimensions and design of adequate
connections, supports details and satisfactory construction of the work, any fabrication,
erection setting or other work done in advance of the receipt of approved drawings shall be
done entirely at the Contractor‟s risk. Approval of the shop drawings shall not be construed as
authorising additional work or increased costs to the Employer. Adjustment in the bid price or
any extension of time to cover required changes in the shop drawings to comply with the
requirements of the contract specifications shall not be permitted.
The tendered rates/prices for the work shall be deemed to include the cost of preparation,
supply and delivery of all necessary drawings, prints, tracings and negatives which the
contractor is required to provide in accordance with the contract.
4.00
SITE INFORMATION
The Contractor shall visit the construction site and examine himself thoroughly the site
condition and satisfy himself as to the nature of the existing roads or other means of
communications, the character of the soil and the excavations, the extent and magnitude of the
work and facilities for obtaining materials and shall obtain generally his own information on all
matters affecting the execution of the work. No extra charges made in consequence of any
misunderstanding or incorrect information on any of these points or on the grounds of
insufficient description will be allowed. All expenses incurred by the Contractor in connection
with obtaining information for submitting this tender including his visits to the site or efforts in
compiling the tender shall be borne by the tenderer and no claims for reimbursement thereof
shall be entertained.
5.00
SETTING OUT
The Contractor shall set out the works. Employer will provide one permanent mark in the
vicinity of the plant for reference. All further laying out work, temporary bench-mark, grid pillars
etc. shall be carried out accurately by the Contractor and maintained till the end of the job.
The work of setting out construction of permanent / temporary pillars etc.,shall be deemed to
be a part of general works preparatory to the execution of work and no separate payment shall
be made for the same.
6.00
MATERIALS
The relevant standards for materials, as well as the testing procedures, have been indicated at
appropriate places in the Specifications.
Materials shall be of approved quality and the best of their kind available and shall generally
conform to I. S. Specifications. The Contractor shall order all the materials required for the
execution of work as early as necessary and ensure that such materials are on site well ahead
of requirement for use in the work.
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All material brought on the site of work by Contractor meant to be used in the same, shall be as
per the specification and to the approval of the Employer / Employer‟s Personnel.
The Contractor shall obtain the Employer / Employer‟s Personnel‟s approval for samples of all
materials to be used in the works and shall deposit these samples with him before placing an
order for the materials with suppliers. The materials brought on the works, shall conform in
every respect to their approved samples, fresh samples shall be deposited with Employer /
Employer‟s Personnel whenever type or source of any material changes.
The Contractor shall check each fresh consignment of materials as it is brought to the site of
works to see that they conform in all respects to the specifications of the samples approved by
the Employer / Employer‟s Personnel.
The Employer / Employer‟s Personnel will have the option to have any of the materials tested
to find out whether they are in accordance with the specification and the Contractor will bear all
expenses for such testing.
Any materials that have not been found to conform to the specification will be rejected forthwith
and shall be removed from the site by the Contractor at his own cost.
The Employer / Employer‟s Personnel shall have power to cause the Contractor to purchase
and use such materials from any particular source, as may in his opinion be necessary for the
proper execution of the work.
7.00
STORAGE OF MATERIALS
The Contractor shall store cement on site in a weatherproof and leak proof shed and the shed
shall hold atleast 3 months requirement. The Contractor shall store all the other materials in a
proper manner to avoid contamination and deterioration, at places at site approved by the
Employer / Employer‟s Personnel and protect from sun, wind, rain or other natural causes.
Should the place where the Contractor stores material be required by the Employer for any
other purpose, the Contractor shall forthwith remove the material from that place at his own
cost and clear the place for the use of the Employer.
The Contractor shall make his own arrangement for storing water, if necessary, in U.G.Sumps or
tanks or cisterns, to the approval of the Employer / Employer‟s Personnel. Care shall be
exercised to see that water is not contaminated in any way.
8.00
WORKMANSHIP
The work-involved calls for high standard of workmanship combined with speed and to the
entire satisfaction of the Employer / Employer‟s Personnel.
All works shall be true to level, plumb and square and the corners, edges and arises in all
cases shall be unbroken and neat.
Any work not to the satisfaction of the Employer / Employer‟s Personnel or his representative
will be rejected and the same shall be rectified, or removed and replaced with work of the
required standard of workmanship at no extra cost.
Child Labour is strictly prohibited.
9.00
PLANT
The Contractor will be required to provide and maintain in working order the power driven
equipments required during the construction work.
In addition to the general conditions indicated in the Contract Documents, the following
conditions regarding use of equipment in works shall be satisfied:
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a) The Contractor shall be required to give a trial run of the equipment for establishing
their capability to achieve the laid down Specifications and tolerances to the
satisfaction of the Employer / Employer‟s Personnel before commencement of the work
b) All equipment provided shall be of proven efficiency and shall be operated and
maintained at all times in a manner acceptable to the Employer / Employer‟s Personnel
c) All the plant/equipment to be deployed on the works shall be got approved from the
Employer / Employer‟s Personnel for ensuring their fitness and efficiency before
commencement of work /equipment, operators, drivers should have valid license.
d) Any material or equipment not meeting the approval of the Employer / Employer‟s
Personnel shall be removed from the site forthwith ;
e) No equipment will be removed from site without permission of the Employer /
Employer‟s Personnel ; and
f) The Contractor shall also make available the equipment for site quality control work as
directed by the Employer / Employer‟s Personnel.
10.00
POLLUTION AND ENVIRONMENTAL PROTECTION
The Contractor shall take all precautions for safeguarding the environment during the course of
the construction of the works. He shall abide by all laws, rules and regulations in force
governing pollution and environmental protection that are applicable in the area where the
works are situated.
The Contractor must take all reasonable steps to minimise dust nuisance during the
construction of the works.
11.00
METHODOLOGY AND SEQUENCE OF WORK
Prior to start of the construction activities at site, the Contractor shall submit to the Employer /
Employer‟s Personnel for approval, the detailed construction methodology including
mechanical equipment proposed to be used, sequence of various activities and schedule from
start to end of the project.
12.00
TESTING OF WORK AND MATERIALS
The Contractor shall, if required by the Employer / Employer‟s Personnel, arrange to test
materials and / or portions of the works at his own cost in order to prove their soundness and
efficiency. If after any such test the work or portion of works is found in the opinion of the
Employer / Employer‟s Personnel to be defective or unsound, the Contractor shall pull down
and redo the same at his own cost. Defective materials shall immediately be removed from the
site.
Note : The items and their numbers listed above in this Clause shall be decided by the
Employer / Employer‟s Personnel as per requirements of the Project and modified accordingly.
13.00
PROTECTION
The Contractor shall properly cover up and protect all work throughout the duration of work
until completion, particularly masonry, arrises, mouldings, steps, terrazzo or special floor
finishes, staircases and balustrades, doors and window frames, plaster angles / corners
lighting and sanitary fittings, glass, paint work and all finishing.
14.00
CLEARING OF SITE
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The Contractor shall after completion of the work clear the site of all debris and left over
materials at his own expense to the entire satisfaction of the Employer / Employer‟s Personnel
and Municipal or other public authorities.
15.00
PREPARATION OF BUILDING FOR OCCUPATION
The whole of the work shall be thoroughly inspected by the Contractor and all deficiencies and
defects put right. On completion of such inspection, the Contractor shall inform the Employer /
Employer‟s Personnel in writing that he has finished the work and it is ready for the Employer /
Employer‟s Personnel inspection.
On completion, the Contractor shall clean all windows and doors and all glass panes, including
cleaning of all floors, staircases and every part of the building including oiling of all hardware.
He will leave the entire building neat and clean and ready for immediate occupation and to the
satisfaction of the Employer / Employer‟s Personnel.
16.00
RATES
The quoted rate shall be for finished work covering all labour, materials, wastage, temporary
work, plant, equipment, overhead charges and profit as well as the general liabilities,
obligations, insurance and risks arising out of General Conditions of Contract.
The items rates quoted by the Contractor shall, unless otherwise specified, also include
compliance with / supply of the following:
a)
General works such as setting out, clearance of site before setting out and clearance of
works after completion.
b)
A detailed programme for the construction and completion of the works (using
CPM/PERT techniques) giving, in addition to construction activities, detailed network
activities for the submission and approval of materials, procurement of critical materials
and equipment, fabrication of special products / equipment and their installation and
testing, and for all activities of the Employer that are likely to affect the progress of
work, etc. including updating of all such activities on the basis of the decisions taken at
the periodic site review meetings or as directed by the Employer / Employer‟s
Personnel .
c)
Samples of various materials proposed to be used on the work for conducting tests
thereon as required as per the provisions of the contract.
d)
Design of concrete mixes as per the relevant clauses of the specifications giving
proportions of ingredients, sources of aggregates along with accompanying trial mixes
as per the relevant clauses of these specifications to be submitted to the Employer /
Employer‟s Personnel for his approval before use on the works ;
e)
Detailed design calculations and drawings for all Temporary works (such as form work,
staging, centering, specialised constructional handling and launching equipment and
the like) to be submitted to Employer / Employer‟s Personnel for approval.
f)
Detailed drawings for templates, bar bending and cutting schedules for reinforcement,
material lists for fabrication of structural steel etc ;
g)
Mill test reports for all mild and high tensile steel and cast steel as per relevant
provisions of the specifications;
h)
Testing of various finished items and materials including bitumen, cement, concrete as
required under these specifications and furnishing test reports / certificates ;
i)
Inspection Reports in respect of formwork, staging, reinforcement and
other items of work as per the relevant Specifications ;
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j)
Any other data which may be required as per these specifications or the conditions of
contract or any other annexures / schedules forming part of the contract;
k)
Any other item of work which is not specifically provided in the Bill of Quantities but
which is necessary for complying with the provisions of the contract
l)
All temporary works, form work and false work; scaffolding etc.
m)
Establishing and running a laboratory with facilities for testing for various items of
works as specified
n)
Cost of in-built provisions for quality Assurance
o)
Cost of safeguarding the environment
p)
Cost of providing “as-built drawings” in original and two sets of prints and
q)
Cost of other facilities and requirements connected with the work
All expenses incurred by the Contractor in connection with obtaining information for submitting
this tender including his visits to the site or efforts in compiling the tender shall be borne by the
tenderer and no claims for reimbursement thereof shall be entertained.
*********
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SECTION - 4
EARTHWORK EXCAVATION
TABLE OF CONTENTS
1.0
GENERAL
2.0
Definition & Classification
3.0
Excavation
4.0
Earthwork
5.0
Filling
6.0
Testing
7.0
Precautions for Heavy Rainfall
8.0
Mode of Measurement
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SECTION - 4
EARTH WORK EXCAVATION
GENERAL
1.1
1.2.2
Scope
1.1.1
The technical specification for all excavation and earthworks (including filling), referred
herein shall apply to the works, expect where otherwise modified or amended within
the contract.
1.2.1
All excavation and earthworks shall comply with the requirements of The Indian
Building (Construction) Regulations and the latest version of Indian Standards (IS),
except where more stringent requirements are specified herein.
Some of the relevant Indian standards, Acts and Codes are referred to here below:
IS:383
:
Specification for coarse and fine
aggregates from natural sources for
concrete.
IS:2720 (Part-II, IV to
XXIII,
XXIV, XXVII to XXIX
& XL)
:
Methods of tests for soils determination XIV, XXI, VIII,
of water content etc.
IS:3764
:
Safety code for excavation work
IS:4081
:
Safety code for blasting and
related drilling operations
IS:4701
:
Code of Practice for earth work in
canals
IS:9758
:
Guide lines for Dewatering during
construction.
IS:10379
:
Code of practice for field control of
moisture and compaction of soils for
embankment and sub-grade.
Indian Explosives Act 1940: as undated.
1.3
Contractor’s Submission
1.3.1
The Contractor shall submit to the Employer / Employer‟s Personnel, for his approval,
the following information well before the commencement of the work.
1.3.1.1
Schedule of construction plant and haulage vehicles
1.3.1.2
Proposed sources of supply and uses of imported material
1.3.1.3
Method statement for the excavation and filling
1.3.1.4
Method statement for stock piling and disposal methods
1.3.1.5
Method statement for controlling the moisture content of fills material
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1.3.1.6
Method statement for controlling ground and surface water and prevention of
water damage
1.3.1.7
Method statement for monitoring ground water levels and adjacent ground
and structure
1.3.2
2.0
The Contractor shall prepare a shoring and excavation plan and submit to the
Employer / Employer‟s Personnel for approval prior to commencement of work well in
advance. The Contractor shall be deemed to have allowed for all time and costs
associated with the preparation of the Plan to the required standard, its approval
process and any subsequent amendments deemed necessary to satisfy the
Specification or the reasonable requirements of the Employer / Employer‟s Personnel.
DEFINITION AND CLASSIFICATION
2.1
Definitions
2.1.1
“Top soil” shall mean soil that is capable of supporting vegetation.
2.1.2
“Approved material” shall comprise all that which is acceptable in accordance
with the Contract for use in the Works, and which is capable of being compacted
in the manner specified in paragraph 5.7 (below) to form a stable fill.
2.1.3
“Unsuitable material” shall mean other than approved material and shall
include :
a)
Material from swamps
b)
Peat, logs, stumps and perishable materials
c)
Material susceptible to spontaneous combustion
d)
Soil of liquid limit exceeding 65% and / or plasticity index exceeding
35%
e)
Material having an in-situ moisture content greater than the maximum
permitted for such material in the Contract, unless otherwise permitted
by the Employer / Employer‟s Personnel.
2.1.4
“Hard Rock” is where both the 90 class machine and D 50 class dozers (or
equivalent) are unable to function.
2.1.5
“Type A” rock fill is a well graded and durable material with a maximum particle
size of 2m.
2.1.6
“Type B” rock fill is similar, but with max. particle size of 300mm and isolated
boulders of < 2m.
2.1.7
“Special filling material” shall mean “approved material” but capable also of
passing a 75mm IS sieve. The fraction passing a 75mm IS sieve shall have
the following characteristics:
a)
Liquid limit not exceeding 45%
b)
Plasticity index not exceeding 20%
c)
Co-efficient of uniformity shall be greater than 50
d)
The percentage passing a 63 µm IS sieve shall be less than 45% by
weight.
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2.1.8
“Cohesive soil” includes clay with up to 20% of gravel and having a moisture
content not less than the value of the plastic limit minus 4.
2.1.9
“Well-graded granular and dry cohesive soils” includes clays containing more
than 20% of gravel and / or having a moisture content less than the value of
plastic limit minus 4, well-graded sands and gravels with a uniformity
coefficient exceeding 10.
2.1.10 “Uniformly-graded material” includes sands and gravels with a uniformity
coefficient of 10 or less, and all silts. Any soil containing 80% or more of
material particle size range 60 to 2 mm will be regarded as silt for this purpose.
3.0
EXCAVATION
3.1
General
3.1.1
The Contractor shall be fully responsible for proper setting out of works, profiling
in excavation, stacking etc. taking adequate safety measures etc.
The contractor shall submit the methodology of excavation to the Employer /
Employer‟s Personnel for approval.
3.1.2
The Contractor shall furnish all skilled and unskilled labour, plant, tools, tackles,
equipment, men, materials required for complete execution of the work in
accordance with the drawings and as described herein and / or as directed by
the Employer / Employer‟s Personnel.
3.1.3
Excavation shall be carried out to the dimensions, lines, levels, and slopes as
indicated on the drawings. If the Contractor excavates deeper than the depths
shown on the drawings or as instructed by the Employer / Employer‟s Personnel
then he shall, at his own expense, fill in such excessive depths with CC 1:4:8
with 40 mm down size HDG metal to the satisfaction of the Employer /
Employer‟s Personnel.
3.1.4
The bottoms of all excavations shall be kept free from mud and water, trimmed
clean, protected from the effects of weather and thoroughly compacted and
consolidated in an approved manner and means, subject to the requirements
as stipulated under paragraph 5.7 (below).
3.1.5
All soft or defective portions of soil below formation level shall be cut out and
filled in with approved material well consolidated in layers of approved
thickness.
3.1.6
Unless otherwise specified no excavated approved material other than surplus
to the requirements of the Contract shall be removed from the Site except on
the direction or with the permission of the Employer / Employer‟s
Personnel/Employer. Should the Contractor be permitted to remove approved
material from the Site to suit his operation procedures, then he shall make
good at his own expense any consequent deficit of filling arising there from
with approved material.
3.1.7
Where the excavation reveals a combination of approved and unsuitable
materials the Contractor shall, unless otherwise agreed by the Employer /
Employer‟s Personnel, carry out the excavation in such a manner that the
approved materials are excavated separately for use in the Works without
contamination by the unsuitable materials.
3.1.8
All materials obtained from excavation shall remain Employer‟s property. All
salvaged materials of archeological importance or of value (in the opinion of
the Employer / Employer‟s Personnel) shall be segregated from the other
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materials and both stacked separately and in regular manner at locations
indicated by the Employer / Employer‟s Personnel.
3.1.9
3.2
Approval of Excavation
3.2.1
3.3
The Contractor shall erect during progress of work caution sign boards,
adequate lighting and protective barricades.
The Contractor shall report to the Employer / Employer‟s Personnel when secure
bottoms have been obtained to the excavations and are ready to receive the
concrete. Any concrete or other work put in before the excavations have been
inspected and approved by the Employer / Employer‟s Personnel shall, if so directed,
be removed and new work substituted in accordance with the Specification after the
excavations have been approved, all at the Contractor‟s own expense.
Cuttings :
3.3.1
Unless otherwise specified or shown on the drawings, the top edges of cutting shall
be neatly rounded to the dimensions shown on the drawings or as directed by the
Employer / Employer‟s Personnel. Such work shall be deemed to be included in the
Contractor's rate for cutting work.
3.3.2
Trenches cut into the toe of a slope can undermine a slopes stability and shall not
be permitted.
3.3.3 Trenches excavated may provide a location where infiltration of water into the hillside
could cause slope instability. Trenches loosely backfilled with soil can permit
almost as much infiltration from the surface as an open trench and will permit
lateral flow of water along the trench through the backfilled material. The
Contractor shall not normally open up such service (or other) trenches in or above
slopes during the rainy season.
3.3.4
Where such trench excavations are permitted by the Employer / Employer‟s
Personnel, the Contractor shall:
(a)
protect the trench against ingress or egress of water by means of sand bags,
concrete kerbs or compacted earth fill bunds along each side of the trench
(b)
(c)
provide pumps at all low points to maintain the trench bottom in a dry state
supervise the functioning and maintenance of the pumps continuously (24 hours
per day) even when work is not proceeding and
(d)
on completion of the work, the Contractor shall backfill the trench in layers not
greater than 150mm deep compacted to not less than 95% MDD
3.4
Excavation of foundation pits and trenches
3.4.1
Where required by the nature of the materials to be excavated, the Contractor
shall provide all necessary planking, strutting and shoring required upholding the
face of the excavation and any necessary staging. The Contractor is
responsible for the design, supply, fixing and removal of all planking and strutting
required resisting all anticipated loading and to ensure safety and prevent
damage to any adjoining property. The Employer / Employer‟s Personnel may
direct that such supports be left in position.
3.4.2
The Contractor may suitably batter faces of excavations subject to the Employer
/ Employer‟s Personnel‟s prior approval.
3.4.3
The bottoms of all excavations shall be leveled carefully and stepped or benched
horizontally as shown on the drawings. Any pockets of soft material or loose
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rock in the bottom of pits and trenches shall be removed and the resulting
cavities and any large fissures filled with 1:4:8 mix concrete. After the placing of
any blinding concrete required by the Contract, no trimming of the side faces
shall be carried out for 24 hours.
3.4.4
The Contractor shall obtain the Employer / Employer‟s Personnels approval to all
foundation excavations prior to the placing of any blinding layer or fixing of
reinforcement. The Contractor shall also take photographic records of all such
excavations and shall provide an as-built level survey of all such excavations,
prepared by an independent registered surveyor.
3.4.5
Trenches and pits shall not be wider than is necessary for the efficient laying and
jointing of pipes or for other works to be carried out.
3.4.6
No greater length of trench shall be opened at any one time than has been
approved by the Employer / Employer‟s Personnel. All surplus spoil shall be
removed immediately on excavation. Unless otherwise specified sacked spoil for
filling shall be kept tidy at all times.
The Contractor shall make good with approved material or plain cement
concrete 1:4:8 using 40 mm metal and down size blue granite aggregate as
directed by the Employer / Employer‟s Personnel, the following:
3.4.7
3.5
Any excavation greater than the net volume required for the works as
described in the Contract.
3.4.7.2
Any additional excavation at or below the bottom of foundations to
remove material which the Contractor allows to become unsuitable.
Trial Holes
3.5.1
3.6
3.4.7.1
The Contractor shall be deemed to have satisfied himself as to conditions
affecting execution of the Works by visiting and inspecting the site of the
proposed works. He may be permitted to inspect the trial holes that have been
made and any open excavations in connection with other works should such be
in progress, and also to study any available drawings which might be of
assistance. The Contractor must clearly understand that all information is given
expressly without guarantee and he shall obtain his own information regarding
the notices of the excavation, conditions peculiar to the Site, and all other
matters affecting the proposed works, and he shall make provision in his rates to
cover for the types of materials to be excavated.
Proving of Bearing Stratum
3.6.1
Where strip, pad, raft or similar foundations are used, the bearing stratum shall
be proven by the Contractor and the results of all such proving tests shall be
submitted to the Employer / Employer‟s Personnel for information along with the
records mentioned in 3.4.4 (above) prior to the construction of any such
foundation. The Contractor shall be deemed to have allowed for all time and
costs associated with such proving and reporting of results.
3.6.2
Where foundations as mentioned in 3.6.1 (above) are to be founded on rock,
proving tests shall be carried out at each isolated pad footing or at 10m (or other)
centres and shall include core drilling to a depth of 5m below the founding
stratum and “star-drilling” or other appropriate method to detect weathered
seams, voids and the like wherever directed.
3.6.3
Where foundations as mentioned in 3.6.1 (above) are to be founded on material
other than rock, proving tests shall be carried out at each isolated pad footing or
at 10m (or other) centres and shall include plate loading tests or other
appropriate method as directed by the Employer / Employer‟s Personnel.
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Technical Specification
Excavation in hard rock
3.7.1
Rock which is in solid beds, which can only be removed either by air
compressed jack hammer, by wedging or chiseling by using hydraulic rock
breaker / chiseling or by using chemical compound approved make and
application as per Manufacturer‟s Specification shall be treated as hard rock. A
boulder or detached rock measuring one cubic metre or more, and existing R.CC
STRUCTURES shall also be treated as hard rock if the same cannot be
removed without, wedging or chiseling. No blasting will be permitted.
3.7.2
Since blasting is not practicable and is prohibited, excavation shall be done by
air compressed jack hammer, by wedging or chiseling by using hydraulic rock
breaker / chiseling or by using chemical compound approved make and
application as per Manufacturer‟s specification and it shall be restricted to the
quantity required to enable the necessary foundation etc. to be put in. In case,
the dimension of trenches exceed those shown in drawings the excess quantity
shall not be paid for.
3.7.3
Benching on rocky strata shall be done wherever required or as directed for
foundation beds and drilling of holes at specified spacing for embedment of
dowel bars as provided in the work or as shown in the drawing.
Excavation in Soft Rock :
This shall include all materials which are rock or hard conglomerate, all
decomposed weathered rock, highly fissured rock, old masonry, boulders bigger
than 0.03 cum, in volume but not bigger than 0.5 cum. and other varieties of soft
rock which can be removed only with pick axes, crow bars, wedges and
hammers with some difficulty. The mere fact that the contractor resorts to
blasting and / or wedging and chiseling of reasons of his own, shall not mean the
rock is classifiable as hard rock.
All types of Soils, Murrum, Boulders:
This includes earth, murrum, top deposits of agricultural soil, reclaimed soil, clay,
sand or any combination thereof and soft and hard murrum, shingle etc. which is
loose enough to be removed with spades, shovel and pick axes. Boulders not
more than 0.03 cum. in volume found during the course of excavation shall also
fall under this classification.
4.0 EARTHWORKS
4.1
General
4.1.1
The Contractor shall carry out all earthworks in such a manner as to prevent
erosion or slips, shall limit working faces to safe slopes and height, and shall
ensure that all surfaces have at all times sufficient gradients to enable them to
shed water without causing erosion. He shall also take all other relevant
precautions and as noted on the drawings.
4.1.2
At the end of each day, all surfaces shall be left with no area that can retain
water. If necessary, the Contractor shall provide and maintain temporary and
approved surface or sub-surface drainage system to ensure minimum delay in
working progress due to wet weather. Alternatively, adequate means, such as
covering all surfaces with polythene, shall be provided and maintained.
4.1.3
The Contractor shall provide and maintain all necessary temporary access roads
and shall divert and reinstate permanent drainage system. All temporary roads
shall be provided with drainage ditches over full length.
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4.2
Surplus Earth
4.2.1
The Contractor shall remove, deposit, spread and level surplus excavated
materials after filling where directed within the confines of the site.
Rate of excavation shall inclusive of backfilling with the available excavated
earth and multiple handling if required.
4.2.2
The Contractor shall take all necessary precautions to prevent any spillages or
soiling of the Public Roads during the earth removal operation.
The contractor shall remove all surplus and unusable excavated earth from the
site and dispose to places approved by the local authority at the quoted price.
4.2.3
4.3
4.4
4.5
Technical Specification
Existing Services
4.3.1
The Contractor shall notify the Employer / Employer‟s Personnel of any mains,
pipes or conduits met with during the excavation and where any excavation is
carried out adjacent to or under any existing cable, and the like the Contractor
shall prevent damage by subsidence, as the Employer / Employer‟s Personnel
may direct, whether such work is shown on the drawings or not.
4.3.2
In the event that damage is done to the public services due the Contractor‟s
work or otherwise, all expenditure for such necessary repairs, etc. shall be borne
by the Contractor. Should these repairs be carried out by the relevant
Authorities, the Contractor shall reimburse the Authorities for the cost of carrying
out the repairs, failing which the Employer / Employer‟s Personnel reserves the
right to pay the Authorities directly and deduct same from any monies due or
becoming due to the Contractor.
Dealing with Water
4.4.1
The Contractor shall keep the excavations well drained and dry at all times and
shall take all precautions to prevent surface water from entering the excavations.
He shall maintain on the site, at all times, pumps of sufficient capacity to deal
with any surface or subterranean water, which may arise from the excavations.
The Contractor shall also provide all pumps, hoses and other equipment
necessary for the drainage and de-watering.
4.4.2
The Contractor shall allow for the construction of all necessary temporary earth
drains, 300 mm half round drains and pipe culverts and the maintenance and
temporary diversion or damming of any existing drains. If required, any drains or
water course so diverted shall be reconstructed in original position upon
completion of the works.
4.4.3
The Contractor shall provide a network of temporary drains to adequately drain
the site. The drainage system should comply with the requirements of the
appropriate local authorities. The Contractor shall obtain the necessary
approvals and pay all costs and expenses in this respect.
4.4.4
The drains shall be sufficiently large so that no mud or water will spill onto the
roads or pavements. The Contractor shall also keep the main Authorities drains
in the immediate and surrounding areas free from silting up owing to the effluent
from the site. If the water is muddy, it will be necessary to place strutted and
supported boarding near the exposed surface. The space in between the
boarding and the surface shall be filled in with graded stone chippings and
coarse sand which will act as a filter to prevent the loss of soil.
Well point and deep well pumps
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4.5.1
The Contractor shall, when using well points or deep well points for de-watering
the site, comply with the following requirements:
4.5.2
The Contractor shall provide full details of the proposed well point or deep-well
pump system duly taking into consideration the soil profile and the grain size
analysis curve as to permeability characteristics of different layers based on bore
hole data for deciding the spacing and size of Steiner pipes.
4.5.3
The Contractor shall conduct preliminary site trials to determine the final layout
of the system and verify its effectiveness and shall determine the spacing and
depth of the points and the number of stages required based upon these trials.
Two stages of de-watering shall however be a minimum.
4.5.3.1
4.5.4
The manner of installation of the well points shall not cause weakening or
subsidence of either the surrounding area or any slips in nearby slopes.
4.5.4.1
4.5.5
4.7
The jetting operation during installation of Steiner shall not cause
disturbance to sub-soil stratification.
The Contractor shall install measuring device to determine water head and flow
rate for purposes of control. The system shall provide for sufficient valves in
leaders and pipes to maintain control over separate sections of the system.
4.5.5.1
4.6
Withdrawal of stages shall be done as decided by the Employer /
Employer‟s Personnel at site, while removal of lowest stage, which is
mandatory, shall be only after completion of roof of the lowest
basement.
The water table shall be lowered by not less than 10 metre and
maintain the level to ensure that the bottom of excavation is
reasonably dry till the basement work is completed.
4.5.6
Where auxiliary sand drains are installed, they shall be considered an integral
part of the system.
4.5.7
The arrangement of the system shall go well with excavation operation and shall
have adequate stand by pumps etc.
4.5.8
The contract sum shall be deemed to include for the provisions of paragraphs
4.5.1 to 4.5.7 above.
Planking and Strutting
4.6.1
The Contractor shall be responsible for the design, supply, fixing and removal of
all planking and strutting, shoring, etc. required by the Works or as otherwise
deemed appropriate by the Employer / Employer‟s Personnel.
4.6.2
All such shoring etc. shall be sufficiently strong to resist earth pressure, insure
the safety of the workpeople and the works and to prevent damage to any
adjoining property. The Contractor at his own expense shall clear any falls of
earth into the excavations. The Contractor at his own cost shall similarly carry
out any consequential back filling or reinstatement.
Steel Sheet Piling
4.7.1
Necessity
The sides of excavation in foundations whether of shallow or deep, depending
on site conditions, shall be protected and taken care of by the Contractor.
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Steel sheet piles used for protection of sides of excavation shall be driven
adequately below excavation levels to give stability. The sheet piles shall be
supported at several points, by soldier beams, wales and struts. Wherever the
excavation width is more inclined bracing or rakes shall be provided to support
the sheet pile.
4.7.2
Contractors Responsibilities
The Contractor shall submit his plans on sheet piling for the pits and trenches,
shoring and strutting system along with the tender.
The Contractor shall responsible for the design of the shoring which shall be
strong enough to resist side thrust and prevent slips / blows and damage to
adjacent works and property. It shall be capable of safe removal when all the
items of work for which it is required are completed, without causing damage to
adjacent property or the foundations already completed.
Adequate protective measures shall be taken to see that the foundation
excavation does not affect or damage adjoining structures and sides of
foundations. The Contractor shall take all measures required for ensuring
stability of the excavation and safety of the property and people in the vicinity.
4.7.3
Shapes of Sheet Piling
Steel piling comprises a row of piles engaging with or interlocked with one
another so as to form a continuous wall, which may be a temporary retaining
wall to protect the sides of vertical cut for deep foundations or shallow foundation
depending on specific site condition. Steel sheet piling shall have suitable joints,
which do not deform during driving and shall form a continuous protection wall.
The pile length can be increased either by welding or bolting.
The shapes of steel sheet piles shall be of either straight sheet piling, shallow
arch-web piling, arch-web piles and or Z- piles. The deep arch-web and Z-piles
shall be used in cases where the large bending moments are to be resisted.
Where the bending moments are less, the shallow arch piles with corresponding
smaller section module shall be used. Straight-web sheet piles shall be used
where the web will be subjected to tension.
4.7.4
Driving steel sheet piles
Steel sheeting shall be driven by a pile frame with hammers or by an automatic
double acting hammer suspended from a derrick. The pile shall be guided to an
interlock system. A drop hammer or a double acting hammer shall be used for
clay and non-cohesive soils such as coarse sand and gravel respectively for
non-cohesive soils.
Alignment of the piling shall be maintained. Double acting hammers shall be
operated either by steam or by compressed air. The operation of a double
acting hammer shall be in such a manner that the whole weight of the hammer
always rest on the head of the pile. The hammer shall hit directly on the pile or
on a suitable head fixed on the pile.
Steel sheet piles shall be interlocked in pairs with helmets. Steel sheet piles with
web section shall be reinforced by steel strips bolted or welded on to minimise
skin friction on the pile driven in stiff cohesive soil.
4.7.5
Extraction of sheet piles
The driven steel sheet piles shall be withdrawn on completion of foundation,
carefully without disturbing / damaging the newly laid foundation or the adjoining
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area using either double acting hammers fitted with an extracting attachment or
an extractor suspended from a derrick.
5.0
FILLING
5.1
5.2
5.3
Filling Generally
5.1.1.
End tipping of fill shall not be permitted except in special circumstances and then
only with the approval of the Employer / Employer‟s Personnel. Such approval
shall not exempt the Contractor from compacting of the end-tipped material to
the requirements as specified in paragraph 5.7 (below).
5.1.2
When the state of the weather is such that in the opinion of the Employer /
Employer‟s Personnel, it would adversely affect the placing of specially
compacted fill, all such shall be stopped.
5.1.3
All filling material, whether placed and / or compacted or awaiting placing and /
or compaction which, in the opinion of the Employer / Employer‟s Personnel,
does not comply with the Specification, or has been damaged by weather or in
any other way, shall be removed and replaced at the Contractor‟s expense.
5.1.4
The Contractor shall also observe all requirements of section 4 (above).
Ground Preparation for Roads and Ground slabs
5.2.1
All unsuitable material evident on the surface shall be removed. The cleared site
shall then be scarified to a minimum depth of 300mm. Any areas where visual
examination reveals the presence of unsuitable material shall be excavated as
necessary to remove such material. Any soft spots indicating underlying pockets
of unsuitable material shall also be excavated.
5.2.2
The Contractor shall undertake thorough compaction of all perimeter and
entrance areas where non-suspended ground slab has been specified.
Similarly, all areas for internal roads construction shall be thoroughly compacted
as specified herein.
5.2.3
At all times during ground preparation / earthworks the surface shall be gently
sloped to temporary ditches to enable surface water to run off. Any ponding
evident after rain shall immediately be pumped dry and the area filled and
compacted with suitable material.
Filling of Foundation pits and trenches and removal of supports
5.3.1
5.3.2
5.4
Unless otherwise shown on the drawings, or directed by the Employer /
Employer‟s Personnel, all filling for this purpose shall consist of approved
material, deposited and compacted by approved plan in accordance with
paragraph 5.7 (below). Timber sheeting and other excavation supports shall be
carefully removed as the filling proceeds except where such are required by the
Contract to be left in position, but the removal of such supports will not relieve
the Contractor of his responsibilities for the stability of the works.
Fill adjacent to pipes shall be free of stones, concrete, etc. and shall be hand
placed and compacted uniformly on both sides of the pipe and where practicable
upto a minimum depth of 300 mm over the top of pipes. While tamping around
the pipes, care should be taken to avoid unequal pressure.
Embankments
5.4.1
Embankment construction (founding on fill) shall include the preparation and
compaction to the degree as specified under paragraph 5.7 (below) of the areas
upon which embankments are to be placed, the placing and compacting of
approved material within areas from which unsuitable material has been
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removed as specified, and the placing and compacting of embankment material
in holes, pits and other depressions within the foundation area.
5.5
5.4.2
Unless otherwise specified, the natural ground over which filling is to be placed
shall be cleared of all loose boulders, grass, top soil, bushes, trees, roots and
other vegetation. If the Employer / Employer‟s Personnel considers that any
under lying material is unstable or unsuitable, he may direct it to be removed and
replaced with approved material.
5.4.3
The Contractor is to provide all necessary de-watering measures for the
completion of the works.
5.4.4
The construction of any section of fill shall not be commenced until the Employer
/ Employer‟s Personnel has approved that section.
Placing Fill
5.5.1
Fill shall be placed in even horizontal layers over the full width laid in thickness
appropriate to the compaction plant used and compacted to satisfy the
requirement as specified in paragraph 5.7 (below).
At all times the
embankments shall be maintained with a sufficient camber and a surface
sufficiently even to enable the surface water to drain readily from them.
5.5.2
If the material deposited as fill subsequently reaches a condition such that it
cannot be compacted in accordance with the requirements of the Contract, the
Contractor shall at his own expense either.
5.5.2.1
Make good by removing the material off the fill either to tip or
elsewhere until it is in a suitable physical condition for re-use, and
replacing it with suitable materials or
5.5.2.2
Make good the material by mechanical or chemical means to improve
its stability or
5.5.2.3
5.5.3
5.6
In-situ Ground Compaction
5.6.1 Following ground preparation, the Contractor shall thoroughly compact the whole
using a vibrating roller of approximately 5000 kg. Dead weight, e.g. Dynapac
CA25 or Ingersoll-Rand DA30 roller as specified herein.
5.6.2
5.7
Cease work on the material until its physical condition is again such
that it can be compacted as described in the contract.
Rock material shall be broken down to dimensions not exceeding the compacted
thickness of the layer in which it is placed. Rock material shall be well
distributed in layers extending the full width of the fill, and sufficient fine material
shall be placed around the larger material as it is deposited to fill the voids and
produced a dense compacted fill. Where insufficient fine material is present to
fill the voids, additional fine material shall be obtained from other sources of
Contractor‟s expense.
Where small deep areas have to be compacted following local excavation of
unsuitable material, the Contractor shall place fill in layers not exceeding 200mm
loose, compaction shall be carried out using approved vibratory tampers or as
specified in to be included
Compaction of Fill
5.7.1
All material shall be compacted in layers as soon as practicable after deposition.
The thickness of each layer shall be compatible with the compaction plant used
and shall be agreed with the Employer / Employer‟s Personnel. Earth moving
plant shall not be accepted as compaction equipment under this clause.
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5.8
Technical Specification
5.7.2
Each class of material to be compacted shall be tested, prior to compaction, by
approved agencies, to determine its maximum dry density and optimum moisture
content for compaction.
5.7.3
The moisture content of the in-situ material during compaction shall be
maintained as close to the optimum moisture content as possible. If necessary,
this shall be adjusted by wetting or drying on site to establish required in-situ field
densities of the fill material to be obtained consistently.
5.7.4
Other than site formation compaction specified under paragraph 5.6.1 (above)
and small localised compaction specified under paragraph 5.6.2 (above), shall
be used as a guide for the Contractor in establishing general compaction
arrangements. However, site trials shall be carried out to ensure that the density
requirement is achieved.
Definitions and Requirements (Associated with Table 2)
5.8.1 The depth of compacted layer is the height by which an embankment is raised
by each successive compacted layer.
5.8.2 For items marked the rollers shall be towed by track laying tractors. Self
propelled rollers are unsuitable.
5.8.3
Where combinations of different types of categories of plant are used, the
compaction requirements shall be :
5.8.3.1
The depth of layer shall be that for the type of plant requiring the least
depth of layer; and
5.8.3.2
5.8.4
The number of passes shall be that for the type of plant requiring the
greatest number of passes
However, where the Contractor uses a lighter type of plant to provide some
preliminary compaction only to assist the use of heavier plant, this shall be
disregarded in assessing the above requirements.
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Table 2 : Compaction Requirement
Type of
compacti
on plant
Smooth
wheeled
roller
Category
Force
per
100mm width
2.1 – 2.6 kN
2.61 – 5.5 kN
Cohesive Soil
Well-graded
Granular and Dry
Cohesive soils
Uniformly graded
materials
Max.
depth of
compac
ted
layer
(mm)
Min.
no. of
passes
Max.
depth of
compac
ted
layer
(mm)
Min. no.
of
passes
Max. depth
of
compacted
layer (mm)
Min.
no. of
passe
s
125
8
125
10
125
10*
125
6
125
8
125
8*
150
4
150
8
Unsuitable
Unsuit
able
150
10
10
8
Unsuitab
le
150
150
Unsuitab
le
Unsuitable
125
12
Unsuit
able
150
12
Unsuitab
le
Unsuitab
le
Unsuitab
le
Unsuitable
> 5.2 kN
Grid Roller
Force
per
100mm width
2.6 – 5.2 kN
5.3 – 7.8 kN
150
4
> 7.8 kN
Pneumatic
Tyred
Roller
Unsuitable
Unsuit
able
Wheel Load
1 – 1.5 ton
125
6
1.5 – 2 ton
150
5
150
10*
Unsuitable
Unsuit
able
2 – 2.5 ton
175
4
Unsuitab
le
2.5 – 4 ton
225
4
125
12
Unsuitable
4 – 6 ton
300
4
125
10
Unsuitable
6 – 8 ton
350
4
125
10
Unsuitable
8 – 12 ton
400
4
159
8
Unsuitable
> 12 ton
450
4
175
8
Unsuitable
175
6
Unsuit
able
Unsuit
able
Unsuit
able
Unsuit
able
Unsuit
able
Vibratory
Roller
Force
per
100mm width
0.25 – 0.45 kN
0.46 – 0.70 kN
0.71 – 1.25 kn
1.26 – 1.75 kN
1.76 – 2.30 kN
2.31 – 2.80 kN
Unsuitab
le
Unsuita
ble
75
16
150
16
Unsuitab
le
Unsuita
ble
75
12
150
12
125
12
150
6
100
12
150
8
200
10*
125
8
150
4
225
12*
150
4
175
4
250
10*
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Compactor
Technical Specification
2.81 – 3.50 kN
175
4
200
4
275
8*
3.51 – 4.20 kN
200
4
225
4
300
8*
4.21 – 4.90 kN
225
4
250
4
300
8*
250
4
Unsuitab
le
Unsuita
ble
Unsuitab
le
Unsuitab
le
75
6
100
6
Unsuitab
le
Unsuita
ble
75
10
150
4
75
6
Unsuitab
le
Unsuita
ble
150
4
125
6
200
4
100
6
150
5
250
4
150
6
200
5
200
6
50 – 65
100
3
100
3
150
3
65 – 75
125
3
125
3
200
3
> 75
200
3
150
3
225
3
100
150
4
150
6
Unsuitable
> 100
275
8
275
12
Unsuitable
Unsuit
able
Static pressure
under base plate
8.6 – 10.3 kN/m
10.3 – 12.1 kN/m
12.1 – 13.8 kN/m
13.8 – 17.2 kN/m
17.2 – 20.7 kN/m
> 20.7 kN/m
Vibro
Tamper
Mass Kilogram
Power
Rammer
Mass Kilogram
Unsuit
able
5.9
5.10
6.0
Settlement
5.9.1 The Contractor shall be responsible for making good to the satisfaction of the
Employer / Employer‟s Personnel all settlement in filling and back filling which
may occur up to the end of the Defects Liability Period.
Hardcore
5.10.1 Hardcore where noted, shall be well graded hard, dry stone, brick, concrete,
block or other sound hard material to the Employer / Employer‟s Personnel‟s
approval broken to a maximum gauge of 50 mm thick well consolidated in layers
not exceeding 150 mm thick. The surface shall be dense and well watered prior
to placing concrete.
TESTING
6.1
General
6.1.1
Following the compaction process, in-situ density test, moisture content test,
maximum dry density test and optimum moisture content test shall be carried as
specified by the Employer / Employer‟s Personnel. Each layer shall be tested in
the field QC lab and approved by the Employer / Employer‟s Personnel prior to
the placing of the next layer where filling is required for construction of roads or
non-suspended ground slabs. The Employer / Employer‟s Personnel may
require additional in-situ density tests by an external agency.
6.1.2
Field density tests shall form the basis for acceptance of the compaction. These
tests shall be carried out at the surface and at depths 1.0m and 3.0m below the
surface. Each layer of fill shall be well compacted and have obtained the
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required density before subsequent layer can be laid. The Employer /
Employer‟s Personnel shall approve Field density tests procedure. The
Contractor shall undertake density and moisture control tests as and wherever
directed by the Employer / Employer‟s Personnel.
6.1.3
6.2
Reports
6.2.1
6.3
As a measure of quality control the Contractor shall undertake field density tests
at 10m centres as a minimum requirement around the areas of non-suspended
ground slabs and at 10m centres along all roads.
All tests shall be reported in a format acceptable to the Employer / Employer‟s
Personnel and shall be submitted for his approval. Daily records of field tests
shall be kept available at the site for the Employer / Employer‟s Personnel‟s
inspection. All sampling and testing shall be undertaken by a laboratory to be
approved by the Employer / Employer‟s Personnel. The Contractor shall
propose the names of at least 3 laboratories for approval and shall allow for all
costs to comply with this specification and tests.
Acceptance Criteria
6.3.1
The following in-situ field densities of compacted materials given as percentages
of the maximum dry density (MDD) shall be obtained :
6.3.1.1
6.3.1.2
6.3.1.3
6.3.1.4
Within 500mm of formation level (subgrade or foundation) – 95%
MDD
From 500mm to 1500mm below formation level – 95% MDD.
More than 1500mm below formation level – 90% MDD.
Face zone of any embankment 95% MDD.
6.3.2
The Contractor may chose to establish by site trials the relationship among the
in-situ material for compaction, compaction plant used, thickness of each layer,
and compacting effort in terms of number of passes. If so established and
agreed by the Employer / Employer‟s Personnel, the Contractor shall follow the
same compaction. However, the Employer / Employer‟s Personnel may at any
time carry out in-situ field density tests to determine whether the degree of
compaction has satisfied the requirement in paragraph 5.7 (above).
6.3.3
The agreed compaction arrangement as mentioned in paragraph 5.7 (above)
shall be adjusted to the satisfaction of the Employer / Employer‟s Personnel
when the compaction is found inadequate.
7.0 PRECAUTIONS FOR HEAVY RAINFALL
7.1
During Rainy Season
7.1.1
The Contractor shall intercept and conduct from the site to an indicated safe
discharge point, all surface water flowing into the site. At each intersection and
abrupt change in direction of surface drainage channels, an accessible catch pit
shall be provided within the quoted rate. All drainage works shall be kept clear
of debris at all times.
7.1.2
Where partially completed permanent drainage works discharge within the site, the
Contractor shall provide a temporary conduit to the approved discharge point at no extra
cost
7.1.3
The Contractor shall grade all earthworks to ensure run-off and to avoid ponding.
7.1.4
The Contractor shall adopt a method of working in which the minimum of bare soil is
exposed at any time. The Contractor shall provide a channel or bund wall at the head of
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basement excavation and an adequate number of sump pits at the base. The sump pits
shall be lined with chunam and contain operational submersible pumps to pump water to
approved discharge points.
7.1.5
7.2
Where slope faces are to be temporarily exposed for more than two weeks temporary
hard surfacing such as chunam shall be provided and temporary drains shall be installed.
When heavy rainfall is imminent, or as and when determined by the Employer /
Employer’s Personnel or the Employer / Employer’s Personnel
7.2.1
Excavations shall not be left open on or adjacent to a slope.
7.2.2
In trenches on or adjacent to slopes are to be excavated, this shall be done with
extreme care and in short sections. The Contractor shall take precautions to
prevent water entering and collecting in the trench.
7.2.3
The Contractor shall seal bare earth slope faces with a suitable hard surfacing or
by sheeting well secured against the wind.
7.2.4
The Contractor shall seal earthworks to the satisfaction of the Employer /
Employer‟s Personnel.
8.0
MODE OF MEASUREMENT
Unless noted otherwise in the bills of quantities, the method of measurement for various
items shall be generally in accordance with IS 1200 subject to the following.
8.1
EXCAVATION
8.1.1
Raft slab and Base slab: Depth of Excavation for Raft slab / base slab requires mass /
open excavation, mechanically or manually shall be measured from average natural
ground level (as decided by Employer / Employer‟s Personnel) upto bottom of raft slab /
base slab and size equal to size of slabs. If a levelling course is ordered, its shall be
measured upto the bottom of levelling course. Any additional excavation taken for
working space, providing shoring, strutting and for any kind of works including water
proof treatment on the side walls shall not be measured and paid for.
8.1.2
Column Footings: Depth of Excavation for footing requires mass / open excavation
shall be measured from average natural ground level (as decided by Employer /
Employer‟s Personnel) upto bottom of footing and size equal to size of footing. If a
levelling course is ordered, it shall be measured upto the bottom of levelling course. Any
additional excavation taken for working space, providing shoring, strutting and for any
kind of works including water proof treatment on the side walls shall not be measured
and paid for.
8.1.3
Plinth Beams : Depth of excavation for plinth beam shall be measured from ground level
upto bottom of beam and width equal to width of beam. If a levelling course is ordered, it
shall be measured upto the bottom of the levelling course.
8.1.4
Where excavation is made in trenches, measurements for cutting shall be taken by
means of tape and staff and the width of concrete or rubble packing as shown on the
drawing shall be considered as width of excavation.
8.1.5
Where excavation is made for levelling the site, levels shall be taken before start and
after completion of work and total quantity of excavation computed from these levels in
manner approved by the Employer / Employer‟s Personnel.
8.1.6
Where soil including soft rock and hard rock and mixed, hard rock after excavation shall
be stacked separately. Measurement of the entire excavation shall be taken as indicated
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above. Excavation of hard rock shall be measured from stacks of excavated hard rock
and reduced by 40% for bulkage and voids. The quantity so arrived at shall be paid for
under hard rock. The difference between the quantity of entire excavation and quantity
payable under hard rock shall be paid as soil including soft rock.
8.2
In open spaces : Filling shall be measured from cross sections of embankments, levels of
which are recorded by means of levels before start of work and after completion of work.
When it is not possible to measure filling from cross sections, it may be measured from loose
stacks or lorry measurements with previous written permission from the Employer /
Employer‟s Personnel and 20% deduction shall be made from the measured quantity to
arrive at the net quantity payable.
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SECTION – 5
CONCRETE WORKS
TABLE OF CONTENTS
1.0
General
2.0
Materials
3.0
Concrete – Workmanship
4.0
Mode of measurement
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SECTION - 6
CONCRETE WORKS
1.0
CONCRETE - GENERAL
1.1
Scope
1.1.1
1.2
This section gives the technical requirements for all structural concrete in building and
civil Construction Management works except where otherwise modified or amended
within the Contract. All general requirements are given in this specification and in the
Bill of quantities covering, but not limited to; definitions; Contractor‟s responsibilities;
site conditions; site safety; construction programme; quality control; materials; testing;
site transportation and accommodation; temporary works; maintenance and as-built
drawings.
Building Regulations and Authoritative Standards and Codes of Practice
1.2.1
Where the structural concrete is to be used in any building works in the concrete shall
comply with the requirements of the latest version of Indian Standards (IS), except where
more stringent requirements are specified herein. A complete set of all these documents
shall generally be available at site with the Contractor.
1.2.2
List of certain important Indian Standards and Codes applicable to this work is given
below. However, the applicable standards and codes shall be as per, but not limited to
the list given below :
IS:383
:
Coarse and fine aggregates from natural
sources for concrete.
IS:432
:
Specification for mild steel, medium
bars
and
hard
drawn
steel
wire
reinforcement.
IS:455
:
Portland slag cement
IS:456
:
Code of practice for plain and reinforced
concrete.
IS:457
:
Code of practice for general construction
of plain & reinforced concrete for dams
massive structures.
tensile steel
for
concrete
&
other
IS:516
:
Method of test for strength of concrete
IS:650
:
Standard sand for testing of cement
IS:1199
:
Methods of sampling and analysis of
concrete
IS:1200
:
Methods of measurement of building
and civil Employer / Employer‟s Personnel /Engineer ing
works
IS:1489
:
Portland-pozzolana cement
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Fly ash based &Calcined clay based
IS : 1566
:
Hard drawn steel wire fabric for
Concrete reinforcement
IS : 1786
:
Specification for cold-worked steel high
strength deformed bars for concrete
reinforcement.
IS : 1791
:
Batch type concrete mixers.
IS : 1834
:
Hot applied sealing compound for joint
in concrete.
IS : 1838
:
Preformed fillers for expansion
joint in concrete pavements and
structures
IS : 2062
:
Steel for general structural purposes.
IS : 2074
:
Ready mixed paint, air drying, red oxide
-Zinc, chrome priming.
IS : 2204
:
Code of practice for construction of
reinforced concrete shell roof.
IS : 2210
:
Criteria for the design of
reinforced concrete shell structures and
folded plates.
IS : 2386
:
Methods of test of aggregates for
concrete
IS : 2430
:
Methods of sampling of aggregates for
concrete.
IS : 2438
:
Roller pan mixer
IS : 2502
:
Code of practice for bending and fixing
of bars for concrete reinforcement.
IS : 2505
:
Concrete vibrators - immersion type
IS : 2506
:
General requirements for screed board
concrete vibrators
IS : 2514
:
Concrete vibrating tables
IS : 2571
:
Code of practice for laying in-situ
cement concrete flooring
IS : 2722
:
Portable swing weigh batchers for
concrete (Single and double bucket
type)
IS : 3025
:
Methods of sampling and test
(physical and chemical) for water and
waste water.
IS : 3067
:
Code of practice for general design
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details and preparatory work for damp
proofing & water proofing of buildings.
Code of practice for concrete
structures for the storage of liquids.
IS : 3370
:
IS : 3414
:
Code of practice for design and
installation of joints in buildings.
IS : 3558
:
Code of practice for use of
immersion vibrators for consolidating
concrete.
IS : 4031
:
Methods for physical tests for hydraulic
cement.
IS : 4082
:
Recommendation on stacking and
storage of construction materials at site.
IS : 4326
:
Code of practice for earthquake
resistant design and construction of
buildings.
IS : 4656
:
Form vibrators for concrete.
IS : 4671
:
Expanded polystyrene for thermal
insulation purposes.
IS : 4925
:
Batching and mixing plant.
IS : 4995
:
Criteria for design of reinforced concrete
bins for the storage of granular and
powdery materials
IS:4998
:
Criteria
chimneys
for
design
of
reinforced
IS : 5256
:
Code of practice for sealing
expansion
joints in concrete lining on canals.
IS : 5816
:
Method of test for splitting tensile
strength of concrete cylinders.
IS : 6452
:
Specification for high alumina cement
for structural use.
IS : 64 61
:
Glossary of terms relating to cement
concrete.
IS : 6494
:
Code
of
practice
for
underground water reservoirs and
swimming pools.
IS : 6509
:
Code of practice for installation of
joints In concrete pavements.
IS : 6909
:
Specification for supersulphated
Cement.
IS : 7293
:
Safety code for working with
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Technical Specification
Construction machinery.
IS : 7861
:
Code of practice for extreme weather
Concreting
IS : 8041
:
Specification for rapid hardening
Portland cement (first revision)
IS : 8042
:
IS : 8043
:
Specification for white Portland cement
(first revision)
Specification for hydrophobic Portland
Cement (first revision)
IS : 8112
:
43 Grade ordinary Portland cement
IS : 9012
:
Recommended practice for shotcreting.
IS : 9013
:
Method
of
making, curing
and
determining
strength of accelerated cured concrete test specimens.
IS : 9103
:
Admixtures for concrete.
IS : 10262
:
Recommended guidelines for concrete mix design.
IS : 11384
:
Code
of
practice
for composite construction in
structural steel and concrete.
IS : 12118
:
Two part polysulphide based sealant.
IS:1220
:
Code of practice for prosvision of water Stops at transverse
contraction joints in masonry and
concrete dams.
IS:12269
:
53 Grade ordinary Portland cement.
IS:12600
:
Low heats Portland cement.
SP : 23
:
Handbook of concrete mixes
SP : 24
:
Explanatory Hand book on Indian Standard code
for plain and reinforced concrete(IS:456-1978)
1.2.3
The Contractor must understand thoroughly any such requirements stated by the
foregoing Codes and Regulations before tendering. He shall also construct the work in
strict accordance with this Specification, working drawings and written instructions issued
by the Employer / Employer‟s Personnel .
1.2.4
If the Contractor wishes to substitute any other authoritative standard or code of
practice for any listed above he shall submit details of any such together with two
complete copies to the Employer / Employer‟s Personnel for approval. Approval for
such substitution shall be at the discretion of the Employer / Employer‟s Personnel and
will not be given unless the Employer / Employer‟s Personnel considers the proposed
standard or code of practice will give a quality of finished work equal to or better than
the specified standard.
The Employer / Employer‟s Personnel reserves the right to check the work constructed
by the Contractor, and his setting out at such times as he may deem fit. There is
however no duty on his part to make such checks and any omission by him to observe
errors shall not relieve the Contractor of his responsibilities in these respects.
Preliminary Information from Contractor
1.2.5
1.3
compressive
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1.3.1
The Contractor shall submit the following information on his proposals for the approval of
the Employer / Employer‟s Personnel before work is commenced.
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
k)
l)
m)
1.4
1.7
Reinforcement bar bending schedules shall be prepared by the Contractor and submitted
to the Employer / Employer‟s Personnel on this project as and when directed.
Use of Concrete
1.5.1
1.6
Source of supply of all aggregates / concrete / bricks / solid & hollow blocks
Source of supply of cement
Source of supply of water
Grading curves for coarse and fine aggregate
Certificate of soundness of cement
Results of tests for organic and inorganic impurities of aggregates and water
Results of tests drying shrinkage of aggregates
Source of supply of reinforcing steel
Test certificates for reinforcing steel
Types of water bars
Types of joint fillers and sealant
Positions of all construction joints
Types of form work
Bar bending Schedules
1.4.1
1.5
Technical Specification
No concrete of any particular mix proportions shall be incorporated into the Works until
all the requirements of this specification have been met in respect of those mix
proportions and have been approved by the Employer / Employer‟s Personnel .
Approvals
1.6.1
A minimum of 14 working days before construction commences the Contractor shall
supply to the Employer / Employer‟s Personnel for his approval details of his proposed
layouts of concrete plant and on site workshop, details of form work systems and
construction devices, eg. Cranes, chutes, scaffolding, which he proposes to use for
structural concrete. The information is to be sufficiently detailed to enable the Employer /
Employer‟s Personnel to approve or otherwise.
1.6.2
Where the Contractor proposed to use climbing tower cranes or any type of plant which
places any load on the reinforced concrete structure, he must furnish full details of
such plant to the Employer / Employer‟s Personnel for approval a minimum 14 days
before the work is commenced. If approved by the Employer / Employer‟s Personnel,
the structure will be strengthened to carry such loads and the Contractor shall be
responsible for any resulting additional design and construction costs or time incurred.
Loads from such plant or equipment shall only be imposed on such completed storey
of the structure where the loaded concrete has already attained the minimum specified
28 days compressive strength.
1.6.3
The Contractor should note that further approvals are required by the Specification
before construction starts. The Contractor is wholly responsible for obtaining these
approvals and no claim for delays or additional payments will be entertained due to the
Contractors failure to obtain such approvals in adequate time.
1.6.4
Any approval, instructions, permission, checking, review etc. whatsoever by the
Employer / Employer‟s Personnel , shall not relieve the Contractor of his responsibility
and obligation regarding adequacy, correctness, completeness, safety, strength,
quality, workmanship etc.
Contractors Responsibility and Defects
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1.8
Technical Specification
1.7.1
The Contractor shall furnish all skilled and unskilled labour, plant, equipment, scaffolding,
all materials etc. required for complete execution of the work in accordance with the
drawings and as described herein and / or as directed by the Employer / Employer‟s
Personnel .
1.7.2
The fact that the Contractor has used materials, etc. to the approval of the Employer /
Employer‟s Personnel shall in no way relieve the Contractor of his responsibilities of
producing a concrete of the required minimum strength, workability, shrinkage
characteristics etc. for the purpose to which it is put.
1.7.3
Any defects due to materials and workmanship not being in accordance with this
specification shall be made good to the satisfaction of the Employer / Employer‟s
Personnel by the Contractor at the Contractor‟s own expense.
1.7.4
The Contractor shall be responsible for making good to the satisfaction of the Employer
/ Employer‟s Personnel any damage to the permanent structure which may be caused
by his plant.
1.7.5
If the Contractor desires to leave any permanently embedded supports for his
shuttering, etc. in the concrete, he must furnish in writing exact details of his proposals
and approval must be obtained from the Employer / Employer‟s Personnel
Source of Supply
1.8.1
1.9
The Contractor shall not alter the source of supply of any material from that initially
approved by the Employer / Employer‟s Personnel without the prior written permission of
the Employer / Employer‟s Personnel .
Supervision
1.9.1
1.10
The Contractor shall employ competent personnel whose first duty will be the supervision
of all stages of mixing, placing and site testing of all concrete and for the supervising of
the preparation of cubes for testing.
Safety and Site Conditions
1.10.1 The Contractor shall strictly follow, at all stages of work, the stipulations contained in
the Indian Standard Safety Code and the provisions of the safety code and the
provision of the safety rules as specified in the General Conditions of the Contract for
ensuring safety of men and materials and in the event of an accident shall hold the
Employer blameless.
1.11
Quality Control
1.11.1 Reference shall be made to the accompanying General Specification for Quality
Control Requirements
1.11.2 The Contractor shall submit to the Employer / Employer‟s Personnel , within 14 days of
award, a Quality Manual in accordance with ISO 9001. The Quality Manual shall
outline the Quality Control measures that the Contractor shall put in place to carry out
the Works and shall include the Quality Control of the Sub-contractors. The Quality
Manual shall include a Project Quality Plan. The Quality Manual shall be reviewed by
the Employer / Employer‟s Personnel and, upon acceptance, shall be implemented by
the Contractor.
1.11.3 The Contractor shall submit to the Employer / Employer‟s Personnel , within 14 days of
award, a list of the Quality Control Personnel proposed for the Works and shall outline
roles and responsibilities. Staff listed shall include the Employer, Quality Control
Superintendent and Project Foreman. If, for some reason, a person so listed is unable
to fulfill their role in this Works, then the Contractor shall find an equivalently qualified
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Technical Specification
person to fill that vacancy. Details of the proposed replacement shall be submitted to
the Employer / Employer‟s Personnel s before.
1.11.4 The Contractor shall establish, document and maintain an inspection and testing
system capable of producing objective evidence that the Works conform to the
Specification, whether carried out by the Contractor or his sub-contractors, or procured
from vendors. A summary of this system shall be included in the Quality Manual.
2.0
MATERIALS
2.1
General
2.1.1
All materials shall conform to the requirements laid down in this section the Indian
Construction Regulations and the relevant current Indian Standards, and also subject
to the satisfaction and approval of the Employer / Employer‟s Personnel . The
Contractor shall maintain a current copy of all such regulations and standards on site
for the use of the Employer / Employer‟s Personnel .
2.1.2
After specific materials have been accepted, the source of supply of such materials
shall not be changed without prior approval of the Employer / Employer‟s Personnel .
2.1.3
Any material considered being sub-standard, or not upto satisfaction of the Employer /
Employer‟s Personnel , shall not be used by the Contractor and shall be removed from
the site immediately.
2.1.4
Representative samples shall be procured by the Contractor and submitted to the
Employer / Employer‟s Personnel for approval before bulk procurement. The approved
representative samples shall be retained by the Employer / Employer‟s Personnel for
future comparison and reference.
2.1.5
The Employer / Employer‟s Personnel shall have the right to inspect the sources of
materials, method of procurement and storage of materials, quality control procedures,
etc.
2.1.6
Generally, all materials shall be stacked and stored by the Contractor as described in
IS: 4082 unless otherwise mentioned and in a manner affording convenient access for
identification and inspection at all times. The storage area and arrangements shall be
subject to the approval of the Employer / Employer‟s Personnel . Any material
rendered unserviceable during the Contractor‟s custody, shall be replaced or repaired
by the Contractor as determined by the Employer / Employer‟s Personnel .
2.1.7
All materials shall be as stored as to prevent deterioration or intrusion of foreign matter
and to ensure the preservation of their quality and fitness for the work. Any material
which has deteriorated or has been damaged or is otherwise considered defective by
the Employer / Employer‟s Personnel , shall not be used and shall be removed
immediately and the cost thereof, shall be realized from the Contractor‟s dues. The
Contractor shall maintain up to date accounts of receipts, issue and balance (stock
wise) of all materials.
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2.2
Technical Specification
Cement
2.2.1
Type of Cement
2.2.1.1 The cement used shall be any of the following with prior approval of the
Employer / Employer‟s Personnel .
I. High strength ordinary Portland cement (Grade 43) conforming to IS:
8112.
II. Portland Pozzolana cements conforming IS: 1489.
III. Portland slag cements conforming to IS: 455.
2.2.2
2.2.3
2.2.1.2
Unless otherwise specified ordinary Portland cement of 43 grade conforming
to latest IS - 8112 shall be used for all concrete works.
2.2.1.3
Ordinary Portland cement (53 Grade) conforming to IS : 12269 shall be used
for important concrete works and wherever higher grade of concrete is
specified.
2.2.1.4
White or coloured Portland cement shall comply with physical requirements
of IS 8112 and pigments shall be inorganic oxide pigments, either natural or
synthetic in origin complying with the requirements of BS : 1014 Pigments
whether added just before mixing or by the cement manufacturer shall only
be incorporated in the proportions approved.
2.2.1.5
Supersulphate and high alumina cement shall not be used in any part of the
works unless specified.
Certification and Testing of Cement
2.2.2.1
The Contractor shall obtain a manufacturer‟s certificate of test in accordance
with the appropriate standard for each consignment of cement delivered to the
site and shall immediately forward these certificates to the Employer /
Employer‟s Personnel for his retention.
2.2.2.2
Not withstanding the manufacturer‟s certificate the Employer / Employer‟s
Personnel may require that any cement delivered to the site, or elsewhere
for use in the works, shall be sampled and tested. Any batch of cement so
tested which fails to comply with this specification will be rejected. The cost
of any such testing shall be borne by the Contractor.
Delivery and Storage of Cement
2.2.3.1 Cement of different types and manufacture shall not be mixed one with another.
Cement shall be transported to site in covered vehicles adequately protected
against water. All cement shall be delivered to the Site or elsewhere for use in
the Works in the original sealed bags of the manufacturer or in approved bulk
containers.
2.2.3.2
The Contractor shall make his own arrangements for the storage of
adequate quantity of cement and all cement shall at all times be protected
from deterioration. Cement, unless delivered in bulk,
shall be stored and neatly stacked in piles not exceeding 10 bags high in
weather proof closed sheds well away from walls, the floor of which shall be
with raised wooden plank flooring to prevent deterioration by dampness or
intrusion of foreign matter, Storage under tarpaulins shall not be permitted.
Cement delivered in bulk shall be stored in a weather proof silo.
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Technical Specification
2.2.3.3
Each consignment of cement shall be clearly identified, stored separately
with clear identifiable stack number and used in chronological order of
receipt ie. the first received being first used.
2.2.3.4
Daily record of cement received and consumed shall be maintained by the
Contractor in an approved form and a copy submitted to the Employer /
Employer‟s Personnel once a week.
2.2.4
Inspection of Cement
2.2.4.1 Any cement which, upon inspection, is considered by the Employer / Employer‟s
Personnel to have deteriorated in any way will be rejected.
2.2.4.2
Any type and grade of cement more than 3 months old shall invariably be
tested to ascertain that it satisfies the acceptability requirements.
2.2.4.3 All cement rejected for any cause shall be removed from the site i immediately.
2.2.4.4 Bulk cement shall be used only if the Employer / Employer‟s Personnel ‟s
approval in writing has been obtained. Bulk cement shall conform in all respects
to the relevant clauses above. Automatic weighing equipment shall be used for
weighing the cement to be added to each batch.
2.2.5
2.3
Cement for use in all concrete floor slabs and beams shall be obtained from a single
source to maintain uniformity of colour.
Aggregates for Concrete
2.3.1
Type of Aggregates
2.3.1.1 Aggregates mean both coarse and fine inert materials used in the preparation
of concrete. Aggregates shall consist of natural sands, crushed stone and gravel from a
source known to produce satisfactory aggregate for concrete complying with IS: 383 and
shall be chemically inert, clean, hard, strong, durable against weathering of limited
porosity and free from such quantities of deleterious materials as may cause corrosion of
reinforcement or may impair the strength and / or durability of the concrete. Additionally,
the flakiness index when determined by the sieve method described in IS 2386 shall not
exceed 35 for any size of concrete aggregate. Total percentage of all deleterious
materials, including coal, lignite, clay lumps, materials finer than 75 microns, soft
fragments and shale but excluding mica shall not exceed 5%. However, for crushed fine
aggregate, total percentage of coal and lignite and clay lumps, shall be limited to 2%.
2.3.1.2 Aggregates shall not contain water soluble sulphur trioxide in excess of 0.1%
2.3.1.3 The chloride ion content of the fine and coarse aggregate shall not exceed
0.06% and 0.02% respectively by mass of dry aggregate. If either aggregate
exceeds these limits the material may still be
considered acceptable by the Employer / Employer‟s Personnel provided that
the total chloride ion concentration derived from the aggregates is not greater
than 0.35% by mass of the cement in the mix.
2.3.1.4 All aggregates shall comply with IS – 2386 and IS 383 in respect of impurities
and additionally with the following
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a)
Technical Specification
Absorption
6% maximum by weight for ordinary construction
2% maximum for water proof construction
b)
Salt
1% maximum (equivalent anhydrous calcium percentage by weight of
cement).
c)
Shell
8% maximum by weight
d)
2.3.1.5
Carbonates
10% maximum by weigh
The drying shrinkage of the aggregates measured in accordance with IS :
2386 shall not exceed.
a)
0.06% for general purpose concrete
b)
0.04% for pre-cast concrete, concrete for special purposes and water
proof concrete.
2.3.1.6
For reinforced concrete work, aggregates conforming to IS:383 & IS:2386
having a maximum size of 20 mm shall be used. For certain reinforced
concrete works, aggregates having a maximum size other than 20 mm size
shall also be used as called for in the drawings. However, for lean concrete
provided as mud mat below structural concrete, maximum size upto 40 mm
shall be used.
2.3.1.7
Aggregates (coarse or fine) with a specific gravity below 2.6 shall not be
used without special permission of the Employer / Employer‟s Personnel .
Sand and crushed rock shall be prepared for use by such screening or
washing, or both, as necessary to remove all objectionable foreign matter at
contractors cost.
2.3.1.8
Fine Aggregate: Fine aggregate shall mean aggregate which pass through
IS Sieve 4.75 mm (3/16 B.S.) test sieve to IS: 2430, leaving a residue not
more than 5% and shall conform to IS : 383. It shall be sand from a natural
source approved by the Employer / Employer‟s Personnel . Machine-made
sand will be acceptable provided the constituent (rock/gravel) is sound, hard,
dense and is acceptable to the Employer / Employer‟s Personnel . Sand
containing any trace of salt shall be rejected. The fine aggregate for
concrete shall be graded within limits as specified in Table – 1 of IS : 383 1970 and the fineness modules shall range between 2.60 to 3.20.
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Technical Specification
Table – 1
IS Sieve
Designation
2.3.1.9
Percentage Passing
Grading
Grading Grading
Zone I
Zone II Zone III
Grading
Zone IV
10 mm
100
100
100
100
4.75 mm
90 - 100
90 - 100
90 - 100
95 - 100
2.36 mm
60 - 95
75 - 100
85 - 100
95 - 100
1.18 mm
30 - 70
55 - 90
75 - 100
90 - 100
600 Micron
15 - 34
35 - 59
60 - 79
80 - 100
300 Micron
5 - 20
8 - 30
12 - 40
15 - 50
150 Micron
0 - 10
0 - 10
0 - 10
0 - 15
Coarse Aggregate : Coarse aggregate shall mean aggregate of which not
less than 95% by weight is retained on a 4.75 mm mesh IS test sieve to IS :
2430 and shall conform to Table – 2 of IS : 383 – 1970 It shall be obtained
from crushed granite, trap, basalt or similar approved stones from approved
quarry. Coarse aggregate shall be chemically inert when mixed with cement
and shall be angular in shape and free from soft friable thin porous laminated
or flaky pieces. It shall be free from dust and other foreign matter. Unless
otherwise specifically stated, for all RCC works the size of coarse aggregate
shall be 20 mm and down size.
Table – 2
IS Sieve
Desig-nation
A
% Passing for single sized aggregate of
nominal size
63 mm
40
20
16
12.5
10
mm
mm
mm
mm mm
B
% Passing of graded
aggregate of nominal size
40
20
16
12.5
mm
mm mm
mm
80 mm
100
-
-
-
-
-
100
-
-
-
63 mm
85 - 100
100
-
-
-
-
-
-
-
-
40 mm
0 - 30
85 100
100
-
-
-
95 100
100
-
-
20 mm
0-5
0-20
85 100
100
-
-
30 70
95 100
100
100
16 mm
-
-
-
85 100
100
-
-
-
90 100
-
12.5 mm
-
-
-
-
85 100
100
-
-
-
90 100
10 mm
0-5
0-5
0-20
0-30
0-45
85 100
1035
2555
3070
40-85
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IS Sieve
Desig-nation
A
% Passing for single sized aggregate of
nominal size
63 mm
40
20
16
12.5
10
mm
mm
mm
mm mm
B
% Passing of graded
aggregate of nominal size
40
20
16
12.5
mm
mm mm
mm
4.75 mm
-
-
0-5
0-5
0-10
0-20
0-5
0-10
0-10
0-10
2.36 mm
-
-
-
-
-
0-5
-
-
-
-
2.3.2
2.3.3
2.3.4
Technical Specification
2.3.1.10
Between the limits specified for coarse and fine aggregates the grading
shall be such as to produce dense concrete of a consistency, which will
work into position without segregation, and without the use of excess
water content.
2.3.1.11
Aggregates for water proof concrete shall be non-porous not subject to
internal movement, change in volume, shape or structure and suitable in
every respect for use in water proof concrete.
2.3.1.12
Lightweight aggregate shall be 5mm exfoliated vermiculite or similar
material approved by the Employer / Employer‟s Personnel
Approval of Aggregate
2.3.2.1
A minimum of 14 working days before the commencement of any concrete
work, the Contractor shall forward to the Employer / Employer‟s Personnel for
approval, details of his proposed source of supply of aggregates giving the
aggregate group classification and typical physical properties as required by IS
: 383.
2.3.2.2
The Employer / Employer‟s Personnel shall be given advance notice of any
alteration in the source of supply of aggregate.
Certification of Aggregates
2.3.3.1
The Contractor shall provide the Employer / Employer‟s Personnel with
a certificate for his retention at such regular intervals as the Employer /
Employer‟s Personnel may prescribe from time to time showing that all
aggregates have been re-tested since the date of the last such
certificate and showing that they continue to comply with the
requirements of this specification.
2.3.3.2
Samples of aggregates of different sizes or types shall be sent to an
approved laboratory for testing prior to the commencement of any
concrete works. The cost of such testing shall be borne by the
Contractor.
2.3.3.3
Not withstanding any certificate of compliance the Employer /
Employer‟s Personnel may at any time require that any aggregate
delivered to the site, or elsewhere for use in the works be sampled and
tested. Any aggregate so tested which fails to comply with this
specification will be rejected.
Delivery and Storage of Aggregates
2.3.4.1 No deliveries in bulk shall be commenced until the Contractor has
demonstrated to the satisfaction of the Employer / Employer‟s Personnel that
the samples comply with this specification.
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2.3.4.2 The samples approved by the Employer / Employer‟s Personnel shall be
representative of the grading and general quality of the aggregate delivered
during the course of the work.
2.3.4.3 Graded aggregate as recommended / shown in Table 2 in the document, only
shall be used for all R.C.C. Works.
2.3.4.4 Any aggregate, which in the opinion of the Employer / Employer‟s Personnel ,
has become contaminated or does not conform to the foregoing requirements
may be rejected by the Employer / Employer‟s Personnel .
2.3.5
Testing of Aggregates
2.3.5.1 Tests shall be carried out on samples obtained from the delivered aggregates
taken at intervals required by the Employer / Employer‟s Personnel in
accordance with IS : 2386. Tests shall be carried out in the presence of the
Employer / Employer‟s Personnel and to the expense of the Contractor.
2.3.5.2 Should a sample fail to comply with any of the tests the Employer / Employer‟s
Personnel may, at his discretion, either reject the batch from which the sample
was taken, order it to be washed and / or screened, or permit it to be used with
variations in the proportions or the concrete mixes specified. Any batch of
aggregate rejected by the Employer / Employer‟s Personnel shall be removed
from site forthwith.
2.3.6
Grading Aggregate
2.3.6.1 Aggregates will be subjected to sieve analysis to IS: 2386, and the limits of
acceptance are as shown in Table 1 and 2 in the document. The Employer /
Employer‟s Personnel may require further analysis to be made if there is any
alteration in the type of aggregate. The cost of any such analysis is to be borne
by the Contractor.
2.3.6.2 The Contractor is to provide a set of IS sieves and weighing equipment with
accuracy to 0.5% of the mass of test sample and carry out sieve analysis to IS :
2386 on site as required by the Employer / Employer‟s Personnel at the expense
of the Contractor.
2.3.6.3 The Contractor shall carry out sieve analysis for coarse and fine aggregates at
the minimum of one per week at each stockpile. At the start of the contract,
sieve analysis should be taken twice per week at each stockpile until the
consistency of grading is evident and agreed by the Employer / Employer‟s
Personnel .
2.4
Water and Ice for Concrete
2.4.1
Water for use in mixing and curing concrete shall be clean, fresh and free from
injurious amounts of oils, acids, alkalis, sugar, organic materials or other substances
that may be deleterious to concrete or steel. Potable water is generally considered
satisfactory for mixing concrete. The maximum permissible values of impurities shall
be as given in clause no. 5.4 of IS: 456 - 2000. Water storage tanks shall be covered
to the satisfaction of the Employer / Employer‟s Personnel to prevent contamination.
2.4.2
In case of doubt regarding development of strength, the suitability of water for making
concrete shall be ascertained by the compressive strength and initial setting time tests
specified in IS:456.
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2.5
Technical Specification
2.4.3
The Employer / Employer‟s Personnel may require that any water be sampled and tested
at the expense of the Contractor by the method given in IS: 3025. Water failing the
criteria given in the appendix to IS: 3025 will be rejected.
2.4.4
The Contractor shall produce test results of water proposed to be used on the job for
approval by the Employer / Employer‟s Personnel before using for concrete works.
2.4.5
Water for use in mixing with cement shall neither be hotter than 25 C nor colder than 5 C
at the time of mixing.
2.4.6
Wherever temperature controlled concrete is specified, the Contractor may establish an
ice making plant of required capacity at site.
o
o
Measures for Controlling Alkali – Aggregate Reaction
2.5.1
Measures to control the occurrence of alkali-aggregate reaction (AAR) in concrete shall
be submitted to the Employer / Employer‟s Personnel for approval. In the absence of
alternative proposals, such control shall be achieved by limiting the reactive alkali content
of the concrete as described in clauses 2.5.2 to 2.5.4 below unless in the opinion of the
Employer / Employer‟s Personnel the concrete element will not be subjected to moisture
ingress throughout its design life.
2.5.2
The reactive alkali of concrete expressed as the equivalent sodium oxide per cubic metre
of concrete shall not exceed 3.0 kg.
2.5.3
The equivalent sodium oxide (Na2O) content of the concrete shall be determined in
accordance with the following steps :
The equivalent Na2O shall be calculated by the expression :
Equivalent Na2O = A + B + C
Where;
A
is the sum of the acid-soluble alkalis (expressed as equivalent Na2O) of cement,
admixture and water
B
is equal to 1/6 the total alkalis of pulverised fuel ash (PFA) (expressed as
equivalent Na2O) and
C
is equal to 0.76 times the chloride ion (Cl) of the aggregate
2.5.3.2
The acid-soluble alkali content of the cement shall be determined in
accordance with IS : 4032 and shall be taken as the average of the latest 25
daily determination of equivalent sodium oxide plus twice the standard
deviation of the results.
2.5.3.3
The acid soluble alkali content of admixtures shall be determined in
accordance with IS : 4032.
2.5.3.4
The acid-soluble alkali content of water shall be determined in accordance with
American Public health Association (APHA) 17 ed. 1989) Sections 3500-K and
3500-Na.
2.5.3.5
The total alkali content of the PFA shall be determined in accordance with IS :
4032 and shall be taken as the average of 25 weekly determination plus twice
the standard deviation of the results.
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Technical Specification
2.5.3.6
The equivalent sodium oxide content of the coarse and fine aggregates shall
be calculated from the quantity of chloride ion present measured in
accordance with IS : 2386.
2.5.4
Test Certificates and Calculations
2.5.4.1
The following particulars of the concrete mix should be submitted by the
concrete supplier to the Employer / Employer‟s Personnel .
a)
2.6
Calculation of the reactive alkali of the proposed mix.
Admixtures
2.6.1
No admixtures of cements containing additive shall be used in concrete unless specified
or approved by the Employer / Employer‟s Personnel . Such approval will not be given
unless in the Employer / Employer‟s Personnel ‟s opinion specific benefit to the density or
quality of the concrete will result. Additives so approved shall be used strictly in
accordance with the manufacturer‟s recommendations and written instructions.
Admixtures should not have detrimental effect on reinforcement.
2.6.2
The Contractor shall obtain the written approval of the Employer / Employer‟s Personnel
for use of additives if they differ from those specified by the Employer / Employer‟s
Personnel , and their use is proposed by the Contractor but not specified by the
Employer / Employer‟s Personnel .
2.6.3
The Contractor shall submit the following details of any admixtures or cement containing
additives for approval before using :
Brand name and manufacturer‟s literature
Proposed dosage and detrimental effects, if any, of under dosage and/or over dosage
Method of adding to the concrete mix and
Details of the Chloride content
2.7
2.6.4
The chloride ion content of admixtures for concrete containing embedded metal or for
concrete containing sulphate resisting Portland cement shall not exceed 2% by mass of
admixture or 0.03% by mass of the cementitious content, whichever is the less.
2.6.5
Calcium chloride as accelerating admixture is not permitted to be used other than in
mass concrete works.
2.6.6
Where the use of admixtures is specified or approved they shall comply with the
requirements of IS: 9103 and shall be of proven make and from a reputed manufacturer.
2.6.7
The Contractor shall produce latest test results carried out at approved Government Test
Houses for the approval of the Employer / Employer‟s Personnel , before use.
2.6.8
Approved admixtures shall be stored in water tight weatherproof containers clearly
marked to show the contents.
Steel bar Reinforcement
2.7.1
Refer separate specification given elsewhere.
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2.8
Technical Specification
Joint Fillers and Sealants
2.8.1
Joint fillers shall be preformed and of a proprietary brand in accordance with the
drawings or similar approved by the Employer / Employer‟s Personnel and shall be
placed in accordance with the manufacturer‟s recommendations and written instructions.
2.8.2
Joint sealants shall be as described in the drawings, or similar approved by the Employer
/ Employer‟s Personnel and shall be used strictly in accordance with the manufacturer‟s
recommendations and written instructions.
2.8.3
Poured joint sealing compound shall be a hot poured rubber bitumen compound complying with
the requirements of IS: 1580 or BS: 2499 unless otherwise specified.
2.9
Water Stops
2.9.1
2.9.2
2.9.3
2.10
Water stops shall be either metallic like copper or non-metallic like PVC.
Water stops shall be preformed and of a proprietary brand in accordance with the
drawings, or similar approved by the Employer / Employer‟s Personnel .
Water stops shall be used at all construction joints in Water Tanks or other structures
designated water proof concrete.
Curing Compounds
2.10.1 Concrete curing compound for structures shall be a liquid resin or wax-resin base
membrane curing compound of an approved proprietary brand. It shall have a minimum
curing efficiency of 75% and shall contain a fugitive dye.
2.10.2 Aluminised curing compound shall, when applied at the rate of approximately 0.25 litres /
2
m by a mechanical sprayer with low pressure fine spray, become stable and impervious
to evaporation of water from the concrete surface within 60 minutes after application.
2.10.3 The curing compound shall contain sufficient flake aluminium in finely divided dispersion
to produce a complete coverage of the sprayed surface with a metallic finish. The curing
compound shall not react chemically with the concrete to be cured and shall not crack,
peel or disintegrate within three weeks after application.
2.10.4 Concrete curing compound for carriage ways shall be a non-pigmented liquid resin or
wax-resin base membrane curing compound of a proprietary brand. It shall achieve a
96% efficiency index and shall be available both with and without a fugitive dye.
2.10.5 The Contractor shall supply test certificates, prepared by an approved testing laboratory,
to show that the compound will provide the required curing efficiency.
2.10.6 Curing compounds shall not be detrimental to the applied finish and surface treatments
specified on the drawings.
2.11
Damp-proof Membranes
2.11.1 Damp-proof Membranes (DPM) generally for use below non-suspended ground floor
slabs, shall be 1200 gauge (0.3mm) polythene sheet complying with Packaging and
Industrial Film Association Standard 6/83 and shall be laid and jointed in strict
accordance with the manufacturers printed instructions.
3.0
CONCRETE - WORKMANSHIP
3.1
Steel Reinforcement
3.1.1
3.2
Refer separate specification given elsewhere.
Form work and False work
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Type of Form work
3.2.1.1 Form work shall include all temporary or permanent forming for the concrete,
together with all temporary construction required for its support.
3.2.1.2 False work shall include any temporary structure used to support a permanent
structure during its erection and until it becomes self-supporting.
3.2.1.2
The Contractor shall be responsible for the design, stability, supply, fixing,
alignment and safe removal of all form work, false work and supports in
accordance with BS: 5975 or corresponding IS code. Strutting shall be so
arranged that it can be removed without undue shock to the concrete. The
Contractor shall submit the design of false work and form work to the
Employer / Employer‟s Personnel for approval before construction. In the case
of folded plates and shell roofs the Contractor should take approval for the
pattern of centering and shuttering along with programme for de-shuttering.
3.2.1.4 The Contractor shall construct form work and false work to support safely the
worst combined effects of all loads as given below so that the final concrete
structure is within the limits of acceptable dimensional tolerances and without
causing bulging or deflection:
a)
Total weight of form work, reinforcement and wet concrete
b)
Construction loads, including dynamic effects of placing, compacting
and construction traffic and
c)
Wind loads
3.2.1.5 All form work shall be watertight and so constructed that there shall be no loss of
material from the concrete. After the concrete has hardened and the form
work has been removed, the concrete shall be in the position and of the
shape, dimensions, and surface finish described in this specification or on the
drawings.
3.2.1.6 The form work shall so designed and positioned that can be removed without
damage to concrete. In the case of beams, slabs or like members the form
work shall be so arranged that the sides or edges may be removed without
disturbance to the soffit or propping system.
3.2.1.7
Form work shall compose of steel, best quality wood or non-absorbent type
plywood. Timber shall be free from significant knots and shall be of medium
grain as far as possible and hard woods shall be used as caps and wedges
under or over posts. Timber shall be well seasoned, free from sap, shakes,
worm holes, warps or other surface defects and shall have smooth finish.
3.2.1.8
Staging, unless specified otherwise, shall generally be of mild steel tubes,
steel beams and channels etc.
3.2.1.9
Plywood shall be used in exposed surfaces (fair faced finish specified) as
shown on drawings or as directed by the Employer / Employer‟s Personnel
where a specially fair faced finish is required. Such surfaces shall be formed
using approved brand of heavy quality water resistant plywood to produce a
perfectly levelled, uniform and smooth surface.
3.2.1.10 Form work for Employer / Employer‟s Personnelural shapes for columns, ring
beams, circular or spherical walls, shell roofs or bottoms in the case of water
reservoirs or any other structure shall be made from approved plywood or
steel plates and frames.
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3.2.1.11 Form work composed of steel and or approved good quality (seasoned)
wood may be used in places where ordinary surface finish in required,
plywood shuttering can also be used by the Contractor.
3.2.1.12 The staging shall be true and rigid and thoroughly braced in both directions
as well as cross braced, strutted and propped such that it will not deform
unduly under weight of concrete and other loads due to men, equipment, etc.
Vertical member or props should not be supported on an un-propped lower
suspended floor or beam unless it is ensured by the Contractor that the
lower floor or beam can safely carry the loads. No propping shall take place
until the Employer / Employer‟s Personnel ‟s approval has been given to the
Contractor‟s scheme submitted along with supporting calculations.
3.2.1.13 To achieve the desired rigidity, ample studs, braces, bolts, spacer blocks,
wires, clamps, ties, straps, shores, etc. shall be used to hold the form in
proper position without undue distortion.
3.2.1.14 Temporary openings for cleaning, inspection and for pouring concrete shall
be provided at the base of vertical forms and at other places, where these
are necessary and as may be directed by the Employer / Employer‟s
Personnel . The temporary openings shall be so formed that they can be
conveniently closed rigidly when required and must not leave any mark on
the concrete.
3.2.1.15 Provision shall be made for traffic on form work not to bear directly on
reinforcing steel.
3.2.2
3.2.1.16 The mould used for manufacturing precast components normally consist of
two parts, (a) bottom mould and (b) side moulds. The bottom mould can be
made out of timber, masonry, concrete, steel FRP, plastic or any other
material acceptable to the Employer / Employer‟s Personnel . The side
moulds similarly can be of timber, steel FRP, or plastic. When using
masonry or concrete moulds, the top surface shall be finished to the required
accuracy and made smooth.
3.2.1.17 In case of masonry moulds, the use of chicken mesh or fibre reinforcements
in the top surfaces will help in making the mould last longer for higher
efficiency.
3.2.1.18 In the case of cored units can be created either by an extrusion process, by
inflated tubes, Mild steel tubes, timber, cardboard / hard paper or any other
materials.
Pre-cambering of Form work
3.2.2.1 In general, and unless otherwise shown or specified in the contract, all form work
for beams and slabs shall be set with an upward camber at mid span of 2 mm
per 1.0m of span for all spans in excess of 5.0 m. Cantilevers shall be set with
an upward camber at end of span of 4mm per 1.0m. Pre-camber of 40 mm at
mid span of flat slab shall be provided.
3.2.3
Joints in Form work
3.2.3.1 All joints in form work shall be either horizontal or vertical, end form work being
square across the mass of concrete. The design of the form work shall permit it
to be struck and removed without injury to the concrete. The joints shall be
sufficiently tight to prevent any leakage of mortar.
3.2.3.2 The Contractor shall use grout checks at all horizontal construction joints and
shall adopt such other approved expedients, eg. foam rubber sealing strips,
polyester crack filler in joints, or taping of joints, as may be necessary to obtain
satisfactory results at joints in form work.
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Technical Specification
Internal Metal Ties for Form work
3.2.4.1 Where internal metal ties are permitted they or their removable parts shall be
extracted without damage to the concrete and the remaining holes shall be
carefully pressure grouted using epoxy grout. No permanently embedded metal
part shall have less cover than that indicated for adjacent steel reinforcement.
3.2.4.2 Internal metal ties in fair faced concrete work
shall be arranged in an
approved neat, regular, consistent pattern throughout the work.
3.2.5
3.2.4.3
Details of internal metal ties shall be submitted to the Employer / Employer‟s
Personnel for approval well in advance prior to their use in the works.
3.2.4.4
The Employer / Employer‟s Personnel may at his discretion allow the
Contractor to use tie-bolts running through the concrete and the Contractor
shall decide the location and size of such tie-bolts in consultation with the
Employer / Employer‟s Personnel . Holes left in the concrete by these tiebolts shall be filled as specified by the Employer / Employer‟s Personnel at
no extra cost. No through tie will be permitted in all liquid / earth retaining
walls / slabs, basement walls etc.
Holes in Form Work
3.2.5.1 When holes are to be provided in form work for pipes, weep holes and the like
they shall be neatly trimmed to fir the pipe and caulked with an approved material to form
a grout-tight joint.
3.2.6
Sloping Form Work
3.2.7
3.2.6.1 When concrete is to be deposited to a steeper slope than 15 from the horizontal
top forms shall be used to enable the concrete to be properly compacted.
Cast in Pipes / Sleeves
o
3.2.7.1 Where required in external walls, retaining walls and like structural elements,
cast in pipes and sleeves shall be fixed securely in place and shall be provided with
puddle flanges and hydrophilic caulking compounds as specified on the drawings.
3.2.7.2
3.2.8
The Contractor shall fix pipe sleeves and inserts or box out to form holes and
chases to specified size and incorrect positions before placing concrete.
Hardened concrete shall not be cut to provide holes or chases without prior
approval. Where reinforcement passes through form work, the form work shall
be designed and constructed to maintain the reinforcement in it correct
position and to minimise leakage of concrete or grout.
Approval of Form Work
3.2.8.1 For each concrete pour requiring form work propping, the Contractor shall
submit to the Employer / Employer‟s Personnel , well in advance prior to commencement
of form work and propping, details and / or calculations of all proposed form work and
props, along with a detailed programme of the work. Such approval, if given, shall in no
way relieve the Contractor of his responsibility for the safety or adequacy of such form
work for its purposes.
3.2.9
Coating of Form Work
3.2.9.1 The inside surface of forms, except for permanent form work, or unless
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otherwise agreed by the Employer / Employer‟s Personnel , shall be coated with
an approved material to prevent adhesion of the concrete.
3.2.9.2
Surface retarders or release agents shall not be used without prior approval.
Release agents shall not be used where surface treatments require bonding
adhesives to be applied.
3.2.9.3
Mould oils or release agents shall be of a type, which will have no adverse
effect to concrete and on any finishes to be applied to the concrete or on the
appearance of fair faced concrete. Release agents shall be applied strictly in
accordance with the manufacturer‟s instructions and shall not come into
contact with reinforcement or pre-stressing tendons. Different release agents
shall not be used in form work to concrete, which will be visible in the finished
works.
3.2.9.4
Care should be taken that mould oils or release agents do not accumulate at
the bottom of form work. If the form work is not used within 24 hours, a further
coat of mould oil or release agent shall be applied before casting the concrete.
3.2.10 Cleaning of Form Work
3.2.10.1 All rubbish, particularly chippings, shavings and sawdust, shall be removed
from the interior of all form work immediately before concrete is placed. In the case of
deep sections an opening shall be left at the base to enable such cleaning to be
adequately completed.
3.2.10.2 The Contractor shall provide compressed air jet and / or a water jet free from
any oil or other contamination for the cleaning of form work.
3.2.11 Inspection of Form work
3.2.11.1 Concreting shall not commence until the Employer / Employer‟s Personnel has
had an opportunity to inspect the form work and any enclosed reinforcement and given
his approval to commence concreting.
3.2.11.2 The erection, casing and striking of the form work shall be done under the
personal supervision of a competent foreman.
3.2.12 Stripping of Form Work
3.2.12.1 Form work shall be stripped with the approval of the Employer / Employer‟s
Personnel at such a time and in such a manner without disturbing, damaging
or overloading the finished concrete work or the structure.
3.2.12.2 The Contractor shall inform the Employer / Employer‟s Personnel before
removal of any form work. The time at which the form work is removed shall
be the Contractor‟s responsibility subject to the minimum periods between
completion of any concreting and removal of forms as given below :
3.2.12.3 In normal circumstances forms shall not be released until the concrete has
achieved a strength of at least twice the stress to which the concrete may be
subjected as the time of removal of form work in accordance to clause no.
11.3 of IS:456-2000
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Table – 3
Type of Formwork
a) Vertical formwork to columns,walls,beams
Minimum Period
Before striking
formwork
16 – 24 h
b) Soffit formwork to slabs ( props to be refixed immediately after removal of
formwork)
3 days
c) Soffit formwork to beams ( props to be refixed immediately after removal of
formwork)
7 days
d) Props to slabs:
7 days
1) Spanning upto 4.5 m
14 days
2) Spanning over 4.5 m
e) Props to beams and arches:
14 days
1) Spanning upto 6.0 m
21 days
2) Spanning over 6.0 m
For other cements and lower temperature, the stripping time recommended above may be suitably
modified.
3.2.12.4
Adverse weather conditions or different cement may cause the above periods to
be increased. Should the Contractor wish to reduce these striking times, he
must satisfy the Employer / Employer‟s Personnel that the strength of the
concrete at such time and the structural system is adequate to withstand the
dead and imposed loads applied to it. Before reducing the striking times the
Employer / Employer‟s Personnel ‟s agreement shall be obtained in writing.
3.2.12.5 In case of special structures, such as shells, folded plates, etc., the sequence of
removal of forms shall be as per drawings or as directed by the Employer /
Employer‟s Personnel .
3.2.12.6
In case of cantilever slabs, the removal of forms shall begin from the outer
edge and proceed towards the support, where as in the case of slabs
supported on two/four sides, the removal of forms shall begin from centre to
supports. Form work to cantilevers shall be removed only with the approval of
the Employer / Employer‟s Personnel.
3.2.12.7
Form work props shall be positioned between permanent supports such that the
members are supported at maximum 3m centres in both directions.
3.2.12.8
When, in the opinion of the Employer / Employer‟s Personnel , the striking of
form work should be detrimental to or may prejudice the safety of the structure,
the form work shall be left in.
3.2.12.9
The Contractor shall be responsible for the demolition and re-concreting of any
damaged or defective work howsoever caused at his own expense. The use of
epoxy for bonding fresh concrete shall be carried out as directed by the
Employer / Employer‟s Personnel at no extra cost.
3.2.12.10
If the props are to be left in place whilst the soffit forms to slabs and beams are
to be removed, the props shall be so designed as to remain in position
throughout the striking process without having to be temporarily removed. The
use of props designed so that a few can be taken away at a time and replaced
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immediately shall be subject to the Employer / Employer‟s Personnel ‟s prior
approval.
3.2.12.11
3.2.13
No construction loads shall be supported from any un-shored portion of the
structure under construction. The number of floors requiring propping shall be
as instructed by the Employer / Employer‟s Personnel according to the design
loads of such floors.
Reuse of Forms
3.2.13.1
The Contractor shall obtain permission for reusing of forms.
Before
reuse, all forms shall be thoroughly scraped, cleaned, all nails and
adhering substances removed, holes and leaks satisfactorily plugged,
joints examined and wherever necessary repaired and inside surfaces
treated as specified herein before.
3.2.13.2
Form work materials shall be cleaned after use and maintained in good
condition. Any timber which has shrunk, warped or split and any forms
which are damaged to such an extent as to weaken the form or to affect the
quality or appearance of the concrete shall be replaced or repaired. If the
strength and composition of the form work has so far deteriorated due to
repeated uses that in the opinion of the Employer / Employer‟s Personnel it
will not longer adequately perform its function, then it shall not be used again
and is to be removed from site.
3.2.14
Nominal Cover to Reinforcement
3.2.14.1 Nominal Cover
Nominal cover is the design depth of concrete cover to all steel reinforcement,
including links. It is the dimension used in design and indicated in the drawings. It shall
be not less than the diameter of the bar.
3.2.14.2
Nominal cover to meet durability requirement.
Minimum values for the nominal cover of normal-weight aggregate concrete which
should be provided to all reinforcement, including links depending on the condition of
exposure described given in Table 16 of IS 456 – 2000
Table – 4
Table 16 of IS 456 – 2000 Nominal Cover to Meet Durability Requirements.
Nominal Concrete Cover in mm
Exposure
not less than
Mild
20
Moderate
30
Severe
45
Very Severe
50
Extreme
75
3.3
FORMED FINISHES FOR CONCRETE
3.3.1
General
3.3.1.1
Where a sawn form work finish is specified or in all cases where no alternative
finish is specified, the surface of the concrete shall be not worse than that
obtained by the use of properly designed moulds of close jointed swan boards.
Small surface blemishes caused by entrapped air will be permitted but the
surface should be free of voids, honey combing or other defects.
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3.3.1.2
Should any concrete in the works, in the opinion of the Employer / Employer‟s
Personnel , fail to match the standard sample in surface finish then the
Employer / Employer‟s Personnel may for this sole reason order the removal
of all such –substandard concrete which shall be replaced with acceptable
concrete all at the Contractor‟s expense.
3.3.2
Samples of Finishes
3.3.2.1
3.3.3
3.3.4
For all specified finishes apart from sawn form work the Contractor shall
provide a sample panel at least 2.4m x 1.2m in vertical surface area including
a typical horizontal and vertical joint in the form work and the construction
techniques that the Contractor proposes for the actual works. The sample
when approved shall form the standard for the entire works. All unsuccessful
samples shall be removed from the site.
Fair Faced Finish (F1)
3.3.3.1
Where fair faced finish (F1) is specified the irregularities of the finish shall be
no greater than those obtained from the use of wrought thickness square
edged boards. The boards shall be arranged in a uniform patter as specified or
approved.
3.3.3.2
The concrete surface shall be smooth, free from fins, lippings, board marks or
other irregularities and shall be even with sharp true arises. Only very minor
blemishes or voids shall occur and there shall be no staining and no discolouration. The finish is intended to be left as struck and the only treatment
generally permitted is light manual abrasion with a carborandum stone to
remove minor marks. Patching of any description will not normally be
permitted.
3.3.3.3
Isolated blow holes not exceeding 10mm diameter will be permitted, but
otherwise surface is to be free from voids, honey combing or other large
defects. Small defects shall be made good and blow holes filled with mortar
specially mixed to match the colour and texture of the concrete.
3.3.3.4
Abrupt irregularities shall not exceed 2mm.
Rough Board Finish (F0)
3.3.4.1
Where rough board finish (F0) is specified it shall be produced using form work
or form work linings of approved rough textured seasoned wood boards with
moisture content of between 10% and 20%. These boards to be of varying
textures and to be arranged to give uniform overall effect. Boards shall be
assembled to prevent penetration or loss of grout between them. Gaps
greater than 5mm shall be filled. Form work shall be soaked with water before
erecting, and shall be kept damp until concrete is placed. Cover spacers and
bolts shall be positioned to the satisfaction of the Employer / Employer‟s
Personnel .
3.3.4.2
The number of uses of form work linings will be limited to their ability to provide
the required finish.
3.3.4.3
The finish shall be left as struck. Any blemishes shall not be made good until
inspected by the Employer / Employer‟s Personnel . After inspection minor
voids and irregularities on surfaces shall be filled with a matching mortar to the
Employer / Employer‟s Personnel ‟s approval, using a sponge rubber faced
float Discolouration will not be permitted.
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3.3.5
Technical Specification
Worked Surface Finish
3.3.5.1 The surface of concrete after casting shall be generally be finished level or to
falls as specified with one of the following surface finishes as indicated on the drawings.
3.3.5.2
Type U1 : The concrete shall be uniformly levelled and screeded to produce a
plain surface. No further work shall be carried out to the surface unless it is to
be used as a first stage for a type U2 or U3 finish.
3.3.5.3
Type U2: After the concrete has stiffened sufficiently, the type U1 finish shall
be floated by hand or machine sufficiently just to produce a uniform surface
free from screed marks.
3.3.5.4
Type U3 : When the surface moisture has diappeared and the concrete
stiffened sufficiently to prevent laitance from being worked to the surface, a
Type U1 finish shall be steel trowelled under firm pressure to produce a dense,
smooth uniform surface free from trowel marks.
3.3.5.5
The following methods may also be specified in conjunction with the above to
provided specific qualities of finish.
a)
b)
Wood float to give an even textured surface
Steel trowel or power float to give a smooth un-textured surface
c)
d)
e)
Scratch with a stiff brush to give a slightly roughened even texture
Tamp with the edge of a board to give an even texture of parallel ribs
Other finishes as specified and executed in an approved manner.
3.3.5.6 The Contractor shall not wet the concrete surface to assist working and shall not
add cement to produce the specified finish without the prior approval of the
Employer / Employer‟s Personnel .
3.4
Construction, Contraction and Expansion Joints
3.4.1
The Contractor shall be responsible for the position and detail of construction joints not
specified in the Contract subject to the Indicative acceptable spacing given in Table 3
(below). Such joints shall be arranged so as to minimise the possibility of the occurrence
of shrinkage cracks.
Table 5 - Indicative Acceptable Spacing of Construction Joints
Element
3.4.2
Maximum Area
2
(m )
Minimum
Dimension (m)
Waterproof concrete walls
25
5
Waterproof concrete slabs
100
10
Slabs with major restraint at both ends
100
13
Slabs with major restraint at one end
only
250
20
Slabs with little restraint in any direction
500
30
Walls (other than above)
40
10
Vertical construction joints shall be properly made to form a vertical grout tight joint.
Where reinforcement passes through the face of the joint the stopping off board shall be
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drilled so that the bars pass through, or the board shall be made in sections with half
round indentations in the joint faces for each bar.
3.4.3
Where the Contractor‟s proposed construction joints result in alterations to the
reinforcement, he shall provide full revised details for the Employer / Employer‟s
Personnel s approval a minimum 14 working days prior to commencement of the works.
3.4.4
The Contractor shall furnish the upper surface of lifts of concrete walls and columns
horizontal and clean the form work of adhering concrete before the next lift is placed.
3.4.6
At all construction joints, both horizontal and vertical, the surface of the previously placed
concrete shall be suitably treated to remove laitance and to expose the coarse aggregate
thus forming an irregular surface key for adjacent concrete. This work shall be carried out
to the satisfaction of the Employer / Employer‟s Personnel by the following or other
approved methods (in either case the surface shall thoroughly washed and cleaned after
roughening).
a)
After the initial set has taken place but before final set (a minimum period of 4
hours after casting) the coarse aggregate shall be exposed by the use of water
jet and stiff brushing or an air-and-water jet.
b)
After final set has taken place (a minimum period of 4 hours after casting) the
laitance shall be removed and coarse aggregate shall be exposed by bush
hammering taking care not to loosen the aggregate in the face of the concrete
matrix.
3.4.7
The Contractor shall ensure the surface of the construction joint is coated with
approved polymer bonding agent prior to concreting afresh immediately.
3.4.8
At least 72 hours shall be left between completion of concreting one bay and the start
of concreting any adjacent bay.
3.4.9
Panels of walls and slabs shall be cast in such a sequence as to minimise and control
the effect of shrinkage at construction joints.
3.4.10 Form work to construction joints shall be rigid and shall accommodate projecting
reinforcement without bending or displacement.
3.4.11 Where kickers are cast at base of walls and columns, these shall be cast monolithically
with the base slab.
3.4.12 if placing of concrete has to be unexpectedly stopped, the Contractor shall form
construction joints as directed by the Employer / Employer‟s Personnel .
3.4.13 Contraction joints and Expansion joints shall be formed as detailed where shown on
the Drawings.
3.4.14 Concrete shall not be placed on both sides of Contraction or Expansion joint at the
same time.
3.4.15 Water stops shall be provided at all construction joints in water retaining structures.
The details of all such joints shall be approved by the Employer / Employer‟s Personnel
.
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3.5
Technical Specification
Concrete Mixes
3.5.1
General
3.5.1.1
Reference shall be made to concrete mixes as Nominal mix concrete or
Designed Mix concrete. Nominal mix concrete is denoted by proportions of
cement, fine aggregate and coarse aggregate such as 1:5:10, 1:4:8, 1:3:6 or
1:2:4. The proportion referred to is by weight (mass). Designed mix concrete
is denoted by grade such as M-20,M-25,M-30,M-35 etc. where M refers to mix
2
and the number to the characteristic strength of concrete in N/mm to be
established by 28 days of 15 cm works cube tests. The particular mix to be
used shall be as described in the Contract or on the Drawings.
3.5.1.2
The characteristic strength of Designed Mix concrete with any type of
cement shall be the 28 days cube strength below which not more than 5% of
the test results are expected to fall.
3.5.1.3
The quality and strength of concrete shall be determined by test on samples
taken on Site from the member during concreting and tested at an approved
Laboratory as directed by the Employer / Employer‟s Personnel .
3.5.1.4
The maximum size of aggregate for structural work shall generally be 20
mm. For thin sections and where reinforcement is congested, 10 mm
aggregate may be approved or required. For large sections where the
reinforcement is widely spaced and for mass concrete, 40 mm aggregate
may be approved.
3.5.1.5
The free water / cement ratio will generally be chosen to suit strength and
workability requirements but may be limited by the considerations of
durability given in Table 6 (below).
3.5.1.6
The cement content not including fly ash and blast furnace slag in excess of
3
450 kg/m should not be used unless special consideration has been given
in design to the increased risk of cracking due to drying shrinkage in thin
sections, or to early thermal cracking and to the increased risk of damage
due to alkali silica reactions.
Table – 6
Table 5 of IS 456 – 2000 Minimum Cement Content, Maximum Water- Cement Ratio and
minimum Grade of Concrete for Different Exposures with Normal Weight Aggregate of 20mm
and Nominal Maximum size
S.No
Exposure
Minimum
Cement
Content
Kg/m3
i)
ii)
iii)
iv)
v)
Mild
Moderate
Severe
Very
Severe
Extreme
Plain Concrete
Maximum Minimum
Free
Grade of
water
concrete
Cement
Ratio
Reinforced Concrete
Minimum Maximum Minimum
Cement
Free
Grade of
Content
water
concrete
Kg/m3
Cement
Ratio
220
240
250
260
0.60
0.60
0.50
0.45
M 15
M 20
M 20
300
300
320
340
0.55
0.50
0.45
0.45
M20
M25
M 30
M 35
280
0.40
M 25
360
0.40
M 40
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Technical Specification
Nominal Mix Concrete
3.5.2.1 Nominal mix concrete shall normally be used only for plain cement concrete
works and less important reinforced concrete works where shown on drawings
or specifically allowed by the Employer / Employer‟s Personnel . Such concrete
shall not require preparation of trial mixes and all such concrete shall be mixed in
a mechanical mixer. Proportions for nominal mix concrete shall be according to
Table-9 of IS: 456-2000. In addition, standard proportion by volume shall be
used wherever specified.
3.5.2.2 In proportioning concrete, the cement shall be measured by weight (mass).
The quantities of fine and coarse aggregates may be determined by volume
(for corresponding weight) but preferably by weight. If fine aggregates are
moist, the amount of surface water shall be determined. Also an allowance
shall be made for bulking in case of volume batching, in accordance with
IS:2386 (Part-III). The weight of aggregate shall be measured when the
aggregates are dry. Due allowance shall be made for the water content of
moist aggregates. All the above data shall be maintained properly, to the
satisfaction of the Employer / Employer‟s Personnel .
Table – 7
Table 9 of IS 456 – 2000 Proportions for Nominal Mix Concrete
Grade of
Concrete
M5
M 7.5
M 10
M 15
M 20
Total Quantity of Dry aggregate by
Mass per 50 kg of cement, to be
taken as the cum of the Individual
masses of fine and coarse
aggregate kg.
800
625
480
330
250
3.5.3
Proportion of fine aggregate
to coarse aggregate (by
mass)
Generally 1:2 but subject to
an upper limit of 1:1 ½ and a
1/2
lower limit of 1:2
Quantity of
water per 50
kg of
cement,max1
60
45
34
32
30
Design Mix Concrete
3.5.3.1 Design mix shall be in accordance with IS 456, IS 10262 and SP 23. The
Contractor shall design the mix and submit for the approval of the Employer /
Employer‟s Personnel . No concreting works shall be commenced without
the approval of the design mix of concrete. The Contractor is responsible for
the design of the concrete mix. Grades of concrete lower than M-15 shall
not be used in reinforced concrete.
3.5.3.2
Mixes for each class of Designed Mix concrete specified or shown on the
Drawings shall be designed by the Contractor to achieve the specified
minimum cube strength combined with high density and adequate workability
for the purpose. In order to allow for unavoidable variation the design
strength shall exceed the specified characteristic strength by twice the
expected standard deviation. In the absence of previous information, the
value of standard deviation given in the following Table – 8 may be assumed
(conforming to Table 8 of IS 456 – 2000). Assumed values of standard
deviation shall only be used until sufficient data are available to determine
the standard deviation.
Prior approval of the Employer / Employer‟s
Personnel shall, however, be obtained in the event of use of higher grade of
design mix concrete not covered herein.
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Table - 8
Grade of Concrete
Assumed Standard Deviation
(N/mm2)
3.5
3.5
4.0
4.0
5.0
5.0
5.0
5.0
5.0
M10
M15
M20
M25
M30
M35
M40
M45
M50
3.5.3.3
Classes of Design Mix concrete will be referred to by the minimum 28 days
Works cube strength and by the maximum size of aggregate. Classes of
concrete shall meet the criteria. The maximum water / cement ratio is herein
defined as the ratio of the weight of the free water to the weight of the
cement. The free water is that quantity of water available to combine with
the cement. Any water required to be absorbed by aggregate is excluded.
To keep the water-cement ratio to the designed value, allowance shall be
made for the moisture contents in both fine and coarse aggregates and
determination of the same in accordance with IS:2386 shall be made as
frequently as directed by the Employer / Employer‟s Personnel .
3.5.3.4 Details of any proposed mix design shall be forwarded to the Employer /
Employer‟s Personnel for his approval in principle well in advance before that
class of concrete is required to be used on the works. The details shall include
at least the following information :
3.5.3.5
(a)
Source, nature and grading of coarse and fine aggregates
(b)
Source of cement
(c)
Nominal maximum size of aggregate
(d)
Cement content
(e)
Aggregate / cement ratio
(f)
Water / cement ratio
(g)
Design density
(h)
Design slump or compacting factor
(i)
Design strength
(j)
Proposed admixtures
(k)
Nominal grading details (tabular & graphical) of the combined
aggregate together with details of the proportions in which the fine and
coarse aggregates are combined.
(l)
Type of plant to be used and location if ready-mixed off site.
The cement content of concrete shall be not less than the appropriate
amount given in Table 5 of IS 456 – 2000. For water retaining structures, the
3
minimum cement content shall be 320 kg/m .Minimum cement contents,
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from durability consideration, or different exposures and sulphate attack shall
be as given in Table-4 of IS:456 – 2000 . In case, higher value is obtained
from trial mix from strength consideration, same shall be considered.
3.5.3.6. Where a Designed mix is to be used, the Contractor shall carry out trial mixes
to determine the suitability of the proposed mix proportions for production of
concrete of the required quality, workability and computability for the location
specified. The Contractor shall prepare trial mixes on receipt of the
Employer / Employer‟s Personnel ‟s provisional approval of the mix design
and complete well before commencement of concreting. Failure on the part
of the Contractor to do so and the consequent delay in the completion of the
works will not entitle him for any compensation whatsoever, either financially
or by way of extension of time.
3.5.3.7
The proportions, once decided for different grades of concrete, shall be
adhered to, during all concreting operations as long as the quality of the
materials does not change.
3.5.3.8
Each batch of concrete shall be sampled and the following prepared.
(a)
six 150 mm cubes – three for test at 7 days, and three
for test at 28 days
(b)
three slump tests (for design slump greater than 25
mm) or
(c)
three
compacting
than 25mm).
factor
tests
(for
design
slump
less
3.5.3.9 Variations in the proportions and sources of materials or in the type, size and
grading of aggregates for approved mixes shall not be made without the consent of the
Employer / Employer‟s Personnel .
3.6
Mixing and Transporting Concrete:
3.6.1
All materials for concrete shall be measured as per approved design mix by weight in
approved weight batching equipment of adequate capacity. Such equipment shall be
checked at weekly intervals at the Contractor‟s expense and shall be accurate to within
2%. Certificates of accuracy shall be submitted immediately to the Employer /
Employer‟s Personnel .
3.6.2
Mixing
Concrete shall be mixed in a mechanical mixer. The mixer should comply with IS 1791
and IS 12119. The mixers shall be fitted with water measuring (metering) devices. The
mixing shall be continued until there is a uniform distribution of the materials and the
mass in uniform in colour and consistency. If there is segregation after unloading from
the mixer, the concrete should be remixed.
3.6.3
A water / cement ratio shall be maintained to produce concrete of adequate workability.
The workability of fresh concrete shall be at the discretion of the Contractor but subject to
approval by the Employer / Employer‟s Personnel and shall be the minimum consistent
with producing a dense, well compacted mass. Due regard shall be paid to the size and
shape of the section together with any congestion of reinforcement. A guide to the
degree of workability required for various types of work is shown in Table 10 (below).
3.6.4
The slump for concrete as determined by slump tests as per IS: 1199 shall not exceed
the maximum slumps indicated in Table 9 below for each type of construction using high
frequency vibration unless otherwise approved or directed by the Employer / Employer‟s
Personnel . The Contractor shall not place concrete having a slump outside the limits
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specified without the approval of the Employer / Employer‟s Personnel . At least one
slump test shall be made for every compressive strength test carried out. More frequent
tests shall be made if there is a distinct change in job conditions, or if required by the
Employer / Employer‟s Personnel .
Table – 9
Nature of
Concrete
Slump in mm
Workability
Min.
Max.
Type of Construction
Conventional
Medium
50
100
All RCC works
Pumpable
High
100
150
All RCC works.
3.6.5
All materials shall be thoroughly mixed dry before water is added and the mixing of each
batch shall continue for a period of not less than two minutes after the water is added or
such longer period as recommended by the manufacturer of the mixer. The mixture shall
be of uniform colour and distribution on discharge and the entire contents of the mixer
shall be discharged without segregation before recharging. The volume of mixed
material shall not exceed the rated capacity of the mixer.
3.6.6
Prior to the first mix each day being agitated in the mixer a rich cement / sand mix shall
be used to coat the inside of the drum, the surplus material being emptied away and not
used in the works. Each time if the work stops for more than 30 minutes, the mixer shall
be thoroughly cleaned and when the next mixing commences the first batch shall have
10% additional cement.
3.6.7
Volume batching of materials and hand mixing of concrete will be allowed only at the
discretion of the Employer / Employer‟s Personnel . Where approved, hand mixing of
concrete shall be done on a clean close boarded platform. The materials shall be
turned over not less than three times dry, water shall then be sprayed on through a
hose and the materials again turned over not less than three times in a set condition
and worked together until a mixture of uniform consistency is obtained.
3.6.8
For hand mixed or volume batched concrete the specified quantities of cement shall be
increased by 10 per cent and not more than 0.5 cubic metre shall be mixed at one
time. The Contractor shall not be entitled to any additional payment in respect of any
extra cost of hand mixing by reason of the additional cement or otherwise. However,
the extra cement shall be considered for reconciliation purposes.
3.6.9
Workability of Concrete
The concrete mix proportions chosen should be such that the concrete is of adequate
workability for the placing conditions of he concrete and can properly be compacted with
the means available. Suggested ranges of workability f concrete measured in
accordance with IS 1199 are given below.
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Placing Conditions
Blinding
concrete,
Shallow
sections, pavements using pavers
Mass Concrete Lightly reinforced
sections in labs, beams, walls,
columns, floors, Hand placed
pavements, Canal lining, Strip
footings.
Degree of Workability
Very low
Heavily reinforced sections
slabs,beams,walls,columns,
Medium
50-100
Medium
75-100
High
Very High
100-150
b)Refer IS 9103
in
Slip form work, pumped concrete
Trench fill-In-situ piling
Termite concrete
3.6.9
Slump(mm)
a)Refer IS 1199
Low
25-75
The moisture content of the coarse and fine aggregates shall be checked by the
Contractor at frequent intervals and the amount of water added to the mix shall be
adjusted to maintain the design workability. For the determination of moisture content
in the aggregates IS: 2386 shall be referred to.
3.6.10 Concrete shall be discharged from the mixer directly into the works or onto a clean,
level, water tight platform or into a clean water tight container. It shall be transported
as rapidly as practicable in a manner which ensures that it is of the correct quality and
consistency at the point of deposition. Normally, not more than 30 minutes shall laps
between mixing and consolidation in position. All platforms and containers shall be
cleaned of the old concrete before the fresh concrete is discharged onto them.
3.6.11 Conveying equipment for concrete shall be mortar tight, well maintained and
thoroughly cleaned before commencement of concrete mixing. Concrete shall be
transported by transit mixers.
3.6.12 Concrete shall not be dropped from a height, thrown or otherwise treated so that
segregation, un-desirable finishes, or defective structural quality results.
The
maximum drop shall be 2.1m unless otherwise approved by the Employer / Employer‟s
Personnel .
3.6.13 No extra water shall be added to the concrete mix after it has left the batching plant.
3.6.14 The Contractor shall take adequate precautions to protect concrete in transit from the
effects of the weather.
3.6.15 Pumping of concrete, which will require a special Design Mix, will only be permitted
with the approval of the Employer / Employer‟s Personnel . The Employer / Employer‟s
Personnel shall also review the entire scheme for which comprehensive details shall be
furnished by the Contractor.
3.6.15.1
Pumping operation whenever commenced shall proceed continuously so
as to prevent "cold" joints between placed sections.
3.6.15.2
The delivery line of the pump shall be of 100 mm diameter or greater and
the pump shall be capable of pumping concrete containing a 20 mm nom.
Size aggregate.
3.6.15.3
The pump shall have a receiving hopper and pumping chamber capable of
displacing at least 15 cu. Metres of concrete per hour against a horizontal
delivery head of at least 90 metres and/or a vertical delivery head of 20
metres.
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3.6.15.4
Pumping lines shall be of approved metallic type laid to avoid bends.
3.6.15.5
The Joints in pumping lines shall be sealed tight to prevent leakages.
3.6.15.6
Pulsating lines shall be isolated from the structure and shall be supported
from the deck on stands.
3.6.15.7
The feet of such stands shall be placed on timbers or similar material to
prevent movement of the line and stand scuffing the deck. Timbers shall
not be embedded in finished work. Stands shall be kept clear of
reinforcement.
3.6.15.8
All equipment, pump chamber, hoppers, lines and rubber hoses shall be
kept clean at all times. Any build-up in the lines of material from previous
operations shall be cleaned out preparatory to pumping.
3.6.15.9
In the event of a breakdown in the equipment causing delay not
exceeding twenty (20) minutes, during which time concrete cannot be
placed, the following procedures shall be carried out:-
3.6.15.9.1
With the approval of the Employer / Employer‟s Personnel at site the
concrete already in place shall have the "wet edges" maintained by
depositing small quantities of hand mixed concrete placed by hand
against the "wet edge" and vibrated into the mass.
3.6.15.10
Where atmospheric temperature exceeds 30 degrees C, the receiving
hopper and lines shall be cleaned out and the concrete contained
therein discarded and immediately removed from the site.
3.6.15.11
The concrete shall be discarded if initial setting of the concrete has
begun in the hopper or discharge lines.
3.6.15.12
All lines shall be cleaned free of concrete prior to resumption of
pumping after each breakdown
3.6.15.13
Concrete in the lines shall be pumped at approximately eight (8)
minute intervals to ensure the concrete in the line is live, whenever
delivery of concrete to the pump is delayed.
3.6.15.13.1
This pumping interval shall be reduced to five (5) minutes during extra
hot weather conditions.
3.6.15.14
Delivery lines where exposed to hot sun, shall be protected by
covering with bags, wet Hessian or other approved means.
3.6.16 Should the concreting be stopped due to mechanical malfunction, accident, or other
similar cause then the Contractor shall inform the Employer / Employer‟s Personnel
immediately so that necessary measures and precautions can be taken. The cost of
any additional work caused by these stoppages shall be the responsibility of the
Contractor.
3.6.17 No concreting shall be commenced until the form work and reinforcement and all other
preparations for the pour have been inspected by the Employer / Employer‟s Personnel
who shall be given a minimum 24 hours notice.
3.7
Placing and Compacting Concrete
3.7.1
Concrete shall be transported and placed by an approved method which ensures that
there shall be no contamination, segregation or loss of the constituent materials.
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3.7.2
If concrete is placed by pumping, the consistency shall be the minimum necessary for
such conveyance of concrete. Before commencement of regular pumping, the pipeline
shall be lubricated by cement mortar (1:2), and once pumping commences, stoppages
shall be avoided.
3.7.3
All areas where concrete is to be placed shall be clean and rendered free from standing
water immediately before the placing of concrete, except for concrete placed under
water.
3.7.4
Concrete shall not be placed in foundations on soft areas or where there is standing
water or debris. Such soft areas shall be removed and filled with 1:4:8/1:3:6 nominal
mix concrete, as directed by the Employer / Employer‟s Personnel .
3.7.5
For rock surfaces, it shall be ensured that the rock is not unsound. On sloping rock
faces, rough steps or benches shall be formed and concrete shall not be placed on a
sloping rock surface. Prior to pouring concrete, the rock surface shall be cleaned with a
high pressure water and air jet and kept wet for three hours. Also, before placing
concrete, water shall be removed from depressions, the rock surface shall be dried and a
10 mm thick cement sand mortar (1:6) layer shall be placed and worked into all crevices,
cracks, depression, etc.
3.7.6
Concrete shall not be placed in any part of the structure until approval has been given,
and if concreting is not started within 24 hours of that approval being given, approval
shall be obtained again. Approval by the Employer / Employer‟s Personnel of any of the
materials and / or work as required herein shall not relieve the Contractor of his
obligation to produce finished concrete in accordance with the drawings and
specifications.
3.7.7
Concreting shall proceed continuously between predetermined construction joints and
shall rise uniformly in the form work at a rate of not less than 2m per hour. Concrete
shall not be placed directly against a vertical form face but shall be caused to flow to this
surface during the compaction process. Unless the Employer / Employer‟s Personnel
agrees otherwise, fresh concrete shall not be placed against in-situ concrete which has
been in position for more than 30 minutes unless the in-situ concrete has been kept
damp with a layer of wet hessian and protected from the weather.
3.7.8
When in-situ concrete has been in place for 4 hours or in the opinion of the Employer /
Employer‟s Personnel the concrete has stiffened to such an extent that it no longer
responds to the action of an internal vibrator, no further fresh concrete shall be placed
against it for a further 20 hours and a construction joint shall be formed.
3.7.9
Concrete shall be compacted in its final position within 30 minutes of discharge from the
mixer unless it is carried in continuously operating purpose made agitators when the
applicable time shall be within 2 hours of the introduction of water to the mix and within
30 minutes of discharge from the agitator. Concrete, which in the opinion of the
Employer / Employer‟s Personnel is no longer sufficiently workable, shall be rejected.
3.7.10 All concrete shall be vibrated unless otherwise specified.
Experienced
operatives using immersion type vibrators to the Employer / Employer‟s Personnel ‟s
satisfaction shall carry out the vibration.
3.7.11 Internal vibrators shall operate at not less than 10000 cycles per minute and external
vibrators not less than 3000 cycles per minutes. Vibrating tables operating at a minimum
of 5000 oscillations per minute may be used for pre-cast elements subject to approval.
Do not use external clamp-on type vibrators without prior approval.
3.7.12 Placing of concrete shall be carried out in layers not exceeding 600 mm deep and in
sequence from one end of the form to the other.
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3.7.13 Placing of concrete shall be carried out in lifts not exceeding 3m in height. This
restriction may be reduced to 2 m or less when casting thin or congested sections at the
discretion of the Employer / Employer‟s Personnel .
3.7.14 Concrete in foundations and other underground work shall be protected from
contamination by falling earth or rock during and after placing
3.7.15 Sufficient vibrators shall be provided to correspond with the rate of placing of concrete.
The vibration shall be continuous throughout the placing of the concrete. Standby
vibrators shall be on Site during all concrete placing.
3.7.16 Vibration shall not be allowed to disturb any recently placed concrete that has
begun set. Any water accumulating on the surface of newly placed concrete shall be
removed by approved means and no further concrete shall be placed thereon until such
water is removed.
3.7.17 Concrete shall be placed and compacted in such a way as to avoid disturbance to the
form work and reinforcement. Where sections of the Works are carried out in lifts, the
reinforcement projecting above the lift being cast shall be supported to prevent
movement of the bars during the casting and setting of concrete.
3.7.18 Vibration shall not be used as a means of distributing concrete into position, and
concrete shall not be vibrated between 4 and 24 hours after placing.
3.7.19 Any concrete, which in the opinion of the Employer / Employer‟s Personnel shows signs
of initial setting before or during placing, shall not be used and it shall be removed at the
Contractor‟s expense.
3.7.20 The Contractor shall take special precautions when concreting in hot weather. Any form
work made of concrete, metal or other material of high thermal capacity shall be cooled
with water before concrete is placed against it. Curing of concrete shall commence
immediately after compaction. Protection from direct radiation shall be in place within 30
minutes after final surface tamping.
3.7.21 Suitable means shall be provided to ensure that the temperature of the concrete on
placing does not exceed 30 deg. C. Concrete shall not be placed around reinforcement
or against surfaces, which are at temperatures above 30 deg. C. All surfaces shall be
thoroughly dampened immediately prior to placing fresh concrete to prevent excessive
absorption of water by the form work.
3.7.22 Special care shall be taken in accordance with IS: 456 while laying concrete under
extreme weather.
3.7.23 under water concrete shall be placed in accordance with the recommendations given in
BS 8004 or corresponding IS Code.
3.8
Testing of Concrete
3.8.1 Sampling
3.8.1.1
For all structural concrete the following representative samples shall be taken
for each concreting day and shall be used and tested by an accredited
laboratory.
a) 150 mm concrete test cubes
b) Two slump tests or
c) Two compacting factor tests
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3.8.1.2 The rate of sampling fresh concrete shall be at least that specified in Table 10
(below) and at least one sample shall be taken from each grade of concrete
produced on any one day.
3.8.1.3
A technically competent person shall supervise the sampling of fresh concrete
and the making of concrete test cubes.
Table – 10
Table 11 of IS 456 – 2000 Characteristic Compressive Strength Compliance Requirement
Specified Grade
M 15
M 20 or above
Mean of the Group of 4Nonoverlapping consecutive
2
Test results in N/mm
> f ck + 0.825 x established
standard
deviation
(rounded off to nearest 0.5
2
N/mm )
or
2
f ck + 3 N/mm whichever is
greater
> f ck + 0.825 x established
standard
deviation
(rounded off to nearest 0.5
2
N/mm )
Individual Test results in
2
N/mm
2
> f ck - 3 N/mm
2
> f ck - 3 N/mm
or
2
f ck + 3 N/mm whichever is
greater
3.8.1.4
The names and qualifications of the supervisory personnel representing the
Employer / Employer‟s Personnel and the Contractor respectively shall be
entered into an inspection log book. All inspections shall be clearly recorded
with date, time and location of inspections, structural members‟ references,
names or personnel present and details of site activities. The logbook shall be
provided by the Contractor and kept on site by the Employer / Employer‟s
Personnel .
3.8.1.5 The supervisory personnel shall mark and sign on the concrete test cubes a
unique reference number and sufficient to allow the testing laboratory to
identify clearly the date and time of casting and the position in which the batch
of concrete (from which the cube was made) was placed.
3.8.2
Concrete Test Cubes
3.8.2.1 Make six cubes from a single sample taken from a batch of concrete selected at
random. Taken the sample at the point of discharge from the mixer, or
elsewhere as directed by the Employer / Employer‟s Personnel . On completion
of curing one set of three cubes is tested for 7 days strength and the remaining
tested for 28 days strength. The average of the three results shall be taken as
the test result.
3.8.2.2 The strength requirement shall be as per clause no 15.2.2, 15.4 & 16.1 of IS-456
– 2000 latest version
3.8.2.3 Acceptance criteria shall be based on test results on 28 days strength only
subject to clause 16.1 of IS-456 – 2000 latest version
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3.8.2.4
The variation between the lowest and highest shall not be more than 15% of
the mean of the three.
3.8.2.5
In addition to the water tank curing method specified in IS-516, cubes may be
cured on Site or in the laboratory in approved mist rooms. Where mist rooms
are used, they shall comply with ASTM C511-75 except that the temperature
shall be maintained at 27 ºC + 3 ºC.
3.8.2.6
If concrete represented by test cubes in any concreting day fails to meet the
standard of acceptance specified in accordance with the IS codes, the
Employer / Employer‟s Personnel may order the taking of core samples from
finished concrete work in same concreting day for test at the Contractor‟s
expense. The locations of these cores to be taken shall be decided by the
Employer / Employer‟s Personnel . These cores shall be treated as in 3.8.3
below.
3.8.3.
Concrete Test Cores : (Non-destructive testing on concrete will be carried out at the
discretion of the Employer / Employer‟s Personnel based on the cube test results and
review of concrete executed).
3.8.3.1 Concrete core samples, from the finished concrete work, shall be taken in the
locations directed by the Employer / Employer‟s Personnel .
3.8.3.2
The diameter of the concrete cores should be 150 mm for 40 mm aggregate
concrete, 100 mm for 20 mm (or smaller) aggregate concrete and must not be
less than 75 mm. The length of the test sample cut from the concrete core
shall be at least 95% of the diameter.
3.8.3.3
All coring shall be completed within 7 working days of the date the instruction
is given by the Employer / Employer‟s Personnel .
3.8.3.4 All cores shall be drilled and tested by an accredited laboratory.
3.8.3.5 Cored holes shall be made good to the approval of the Employer / Employer‟s
Personnel with cement mortar or concrete of similar strength to that of the
parent concrete.
3.8.3.6 Results of the cores for the same concreting day will be examined individually.
3.8.3.7
In assessing the results of compressive tests on cores the concrete
represented by the core shall be deemed not to comply with the specification if
the strength of the core when adjusted for length / diameter ratio and
converted to estimated cube strength as follows:
a)
The average result of the cores is less than 85% of the specified grade
strength or
b)
An individual result is less than 75% of the specified grade strength
3.8.3.8 Concrete cores should not show evidence of segregation of constituent materials
3.8.3.9 There should be no honeycombing in the cores and the extent of the voids in the
cores should not be more than “few”.
3.8.3.10 Cores shall not be tested for strength at ages less than 28 days and no
adjustment shall be made to the measured strength in respect of the age of
the core when tested.
3.8.4
Testing and Test Record
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3.8.4.1
The concrete cubes tested at 7 days are intended to be indicative only and
the target works strengths at 7 days are not mandatory. It should be noted
however that it is unlikely that cubes failing the 7 days target will subsequently
pass the 28 days cube strength.
3.8.4.2
The concrete cubes tested at 28 days shall be taken to represent the concrete
placed in the works. The standard of acceptance for cube strength tests shall
be calculated from the maximum load sustained by the cube at failure.
3.8.4.3
The appropriate compressive strength compliance requirement as given in
Table 11 of IS 456 – 2000 shall be considered to be satisfied if the test results
comply with the acceptance criteria.
3.8.5
Workability
3.8.5.1 The standard of acceptance for the slump test during the production of concrete
shall be the design slump + 10 mm.
3.8.5.2 The standard of acceptance for the compacting factor test during the production
of concrete shall be the design compacting factor (as specified in Table 10) +
0.03.
3.8.6
Testing
3.8.6.1
The standard of acceptance of any preliminary tests will be similar to the
standard for normal works cubes, cores, slump or compacting factor, except
that the minimum cube strengths required shall be those given under minimum
Preliminary Cube Strength at 28 days in Table 2 of IS 456 -2000.
3.8.6.2
The Employer / Employer‟s Personnel shall, during the progress of the work,
have the power to order tests, other than cube tests, including slump tests as
far as practicable due to local conditions.
3.8.6.3
If the strength requirement is not satisfied the Employer / Employer‟s Personnel
may order such further testing, including chemical analysis of samples of
hardened concrete in the structure, as he considers necessary.
3.8.6.4
Any concrete which fails to meet the above standards of acceptance shall he
be either further tested, or rejected at the discretion of the Employer /
Employer‟s Personnel . The costs of any such tests or of the removal of
rejected concrete and its replacement and associated costs shall be borne by
the Contractor.
3.8.6.5 If the strengths required are not attained or maintained throughout the contract,
the Employer / Employer‟s Personnel may instruct the Contractor to take any
one of the following steps or a combination thereof as the Employer /
Employer‟s Personnel considers appropriate.:a)
Adjust the mix proportion and carry out further trial mixes until a new mix
proportion satisfying the requirements of the foregoing test is obtained
and approved.
b)
Improve the standard of quality control
c)
Carryout, at the Contractor‟s expense, other tests as directed by the
Employer / Employer‟s Personnel .
d)
Replace any site concrete condemned as a result of failing to comply
with the standards of acceptance specified and meet all costs arising
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from such replacement. Submit for approval the method statement for
replacing the condemned concrete before the replacement is carried
out. In certain cases, the Employer / Employer‟s Personnel may require
the method statement to be prepared and the remedial work to be
supervised by a qualified Employer / Employer‟s Personnel /Structural
Engineer.
3.9
Curing and Protecting Concrete
3.9.1
All freshly placed concrete surfaces shall be protected from damages by workmen
equipment or any other cause.
3.9.2
Newly placed concrete shall be protected by approved means from harmful effects of
weather including rain, sun and wind. Concrete placed below ground level, shall be
protected from falling earth, during and after placing. Concrete placed in ground
containing any deleterious substances, shall be kept free from contact with such
ground or with water draining from such ground, during placing of concrete and for a
period of at least three days or as otherwise instructed by the Employer / Employer‟s
Personnel .
3.9.3
Steps, as approved by the Employer / Employer‟s Personnel , shall be taken to protect
immature concrete from damage by debris, excessive loading, vibration, abrasion,
mixing with earth or other deleterious materials, etc. that may impair the strength and
durability of the concrete.
3.9.4
Immediately after compaction and for 7 days thereafter concrete shall be prevented from
drying out too rapidly and protected against harmful effects of weather including rain,
rapid temperature changes, and wind. This period may be extended, at the discretion of
the Employer / Employer‟s Personnel , up to 14 days. The methods of protection used
shall be subject to the approval of the Employer / Employer‟s Personnel . The method of
curing used shall prevent loss of moisture from the concrete.
3.9.5
During the curing period horizontal surfaces shall be protected by one or more of the
following or other approved means.
3.9.6
a)
Covering with damp hessian canvas sacks or similar absorbent materials kept
constantly damp and wholly covering the exposed concrete surface.
b)
Covering with impermeable materials raised approximately 50 mm over the
surface so as to prevent loss of moisture.
c)
an approved sprayed membrane curing compound
d)
Flooding with water (potable water free from sediments of any kinds shall be
used).
During the curing period other surfaces shall be provided by the following or other
approved means :
a)
b)
Form work in close contact with the concrete
covering as in 3.9.5 above
3.9.7
All concrete faces or edges, particularly those, which are exposed without rendering in
the final structure, shall be adequately protected from damage and discoloration at all
times.
3.9.8
Concrete structures shall not be loaded until the concrete is at least 21 days in the case
of cantilevers. With the prior approval of the Employer / Employer‟s Personnel the
structure may be loaded after this time but in no case will loading greater than the final
design loading be permitted.
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3.10
Technical Specification
Cleaning and Finishing of Concrete
3.10.1 All concrete surfaces shall have an even and clean finish free from honeycombs, air
bubbles, fins or other blemishes unmarred, reasonable smooth. The form work joint
marks on concrete work exposed to view shall be rubbed with carborandum stone and
defects patched up with paste of cement sand mortar (1:1) and cured. The finish shall
be made to the satisfaction of the Employer / Employer‟s Personnel . Concrete
surfaces to be subsequently plastered or where brick work is to be built against them,
shall be adequately hacked as soon as the form is stripped off so that proper bond can
develop.
3.10.2 Immediately after removal of forms, the concrete shall be inspected and defective
areas as pointed out by the Employer / Employer‟s Personnel shall be removed
partially or entirely as directed. Holes, left by form bolts, etc. shall be filled-up and
made good with cement sand mortar of approved mix. All superficial defects such as
honeycombing, rough patches, etc. shall be similarly made good. If the defective area
is at a vulnerable location, e.g. at the ends of beams & columns etc. then it may be
necessary to cut out the member completely or in part and reconstruct as directed by
the Employer / Employer‟s Personnel . If epoxies have to be used, the same shall be
subject to the approval of the Employer / Employer‟s Personnel . Poured concrete
affected by faulty form work shall be removed totally and replaced. If so directed, the
Contractor shall have to resort to grouting / shotcreting.
3.10.3 A smooth finish shall be obtained with the use of forms having smooth and even
surfaces and edges. Panels and form linings shall be of uniform size and be as large
as practicable and installed with closed joints. Upon removal of forms, the joint marks
shall be smoothened off and all blemishes, projections etc. removed leaving the
surfaces reasonably smooth and unmarred.
3.10.4 Where integral cement concrete finish is called for, the surface shall be compacted and
then floated and treated with a straight edge and any high and low spots eliminated.
The work shall be carried out as per IS:2571.
3.11
Tolerances
3.11.1 All other cast in place concrete work shall be dimensionally accurate to within the
tolerances given in Table 11 (below), unless closer tolerances are further specified or
shown on the drawings
3.11.2 Closer tolerances will generally be specified for:
a)
b)
c)
d)
Pre-cast concrete
Measuring flume contours
Filter bed and drying bed floors
Machinery bases
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Table – 11
Item
1
1a)
1b)
2.
Tolerance
Variations from the plumb
In the lines and surfaces of
columns, piers, walls and arises
In 3m
5 mm
In any storey or 6 m maximum
10 mm
In 12 mm or more
20 mm
For exposed corner columns,
control-joint grooves and other
conspicuous lines
In any storey or 6 m maximum
5 mm
In 12 mm or more
10 mm
Variation from the level, or
from the grades indicated on
the drawings **
At any point (from true elevation)
+ 10 mm
3.
but not more than 5 mm
variation between two
points within 6 m in a
horizontal plane.
Variation of the linear building
lines from established position
in plan and related position of
columns, walls and partitions.
In any bay or 6 m maximum
10 mm
IN 12 m or more
25 mm
No tolerance that would result in encroachment on adjoining properties is
permissible
4.
5.
Variation in the sizes and
locations of
sleeves,
floor
openings and wall openings
5 mm
Cross sections of columns and
beams, thickness of walls, slabs
and other parts of the building
Upto 0.5 m
+5/-3mm
Over 0.5 m
+/-5 mm
6.
Footings
6a.
Variation in dimensions in plan
6b.
Misplacement or eccentricity
+25 mm#/10mm
2%
6c.
Reduction in thickness
50 mm
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of the footing width in
the
direction
of
misplacement but nor
more than +25 mm#
of specified thickness
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Technical Specification
Item
Tolerance
7.
Variation in steps
7a.
IN a flight of stairs
7b.
Rise
3 mm
Tread
5 mm
In consecutive steps
Rise
2 mm
Tread
3 mm
**
Variation in floor level are to be measured before removal of supporting
shores
#
Applies to concrete only, not to reinforcing bars or dowels
Except otherwise shown on drawings, these are maximum allowable
tolerances.
3.12
Miscellaneous
3.12.1 Holes, chases, indentations and the like shall be provided where indicated on
the drawings. All such shall be formed in the concrete and not cut after the concrete has
hardened.
Should the Contractor or any subcontractor require additional case-in items, holes or
the like these requirements shall be submitted to the Employer / Employer‟s Personnel
for his approval a minimum of 14 working days prior to concreting.
Pipes, conduits, fixing bolts and other such cast-in items shall be provided where
indicated on the drawings.
3.13
Concrete (Non-Structural)
3.13.1 Lightweight aggregate concrete shall be proportioned, mixed and placed as
required by the Employer / Employer‟s Personnel . Unless otherwise shown, the mixes
shall be one of the following, the type to be directed by the Employer / Employer‟s
Personnel .
a)
Breeze Concrete
1 Part cement to 6 Parts of coke breeze
b)
aggregate by volume.
Polystyrene aggregate concrete
3
3
sand to 2.25 kg.
3
3
sand to 3.06 kg.
i)
1:2:4 mix (913 kg.m ): 45 kg. Cement and 0.056m
Expanded polystyrene particles.
ii)
1:3:6 mix (800 kg.m ): 45 kg. Cement and 0.084m
Expanded polystyrene particles.
iii)
1:1:4 mix (640 kg.m ): 45 kg. Cement and 0.028m
Expanded polystyrene particles.
3
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3
sand to 2.155 kg.
Chennai Metro Rail Ltd.,
c)
Technical Specification
Vermiculite aggregate concrete
1 Part cement to 6 Part vermiculite by volume
3.13.2 Lightweight “air entrained” concrete to be proportioned and mixed according to the
manufacturer‟s instructions and placed as required by the Employer / Employer‟s
Personnel .
3.14
4.0
Mode of measurement
Unless noted otherwise in the bills of quantities, the method of measurement for various
items shall be generally in accordance with IS 1200
********
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SECTION - 6
FORM WORK
1
Formwork
4.1
Related Work

Concrete

Reinforcement
4.2
4.3
Applicable Standards
IS - 4990
Specification for plywood for concrete shuttering work
IS - 1629
Rules for grading of cut size of timber
IS - 2750
Specification for steel scaffoldings.
IS - 4014
Code of practice for steel tubular, scaffolding
Section Includes
Design, Fabrication, erection and striking of formwork for in - situ concrete
4.4
Quality Assurance
Design and construction shall be executed and supervised by fully qualified personnel.
In accordance with quality assurance programme, the Contractor shall provide the Employer / Employer‟s
Personnel with information demonstrating that a system will be used to ensure that the work carried out
under this section (including that done by sub-Contractors) will comply with the requirements of the
specifications.
4.5
Formwork
Related Work

Concrete Form Work

Concrete Reinforcement

Cast - in situ Concrete
4.5.1
Quality Assurance
a.
Supervisory staff shall have qualification and experience in the above field.
c.
IS Standards – Note: Latest amendments shall be followed.
4.5.2
Design Criteria
Formwork system shall be executed and designed by specialist, qualified, to the shapes, lines, forms and
dimensions shown on drawings.
The Contractor shall submit to the Employer a method statement
backed by design calculations.
Required drawings and sketches shall be enclosed along with the
statement for the proposed area to be taken up for working at a time.
The number of repetitions
expected, type of material used, etc shall be detailed therein.
Formwork shall start only after written approval from the Employer / Employer‟s Personnel has been
received. Approval of the proposal in submitted form an acceptance of modification does not relieve the
Contractor of its obligation to achieve its required line finish within accepted tolerance limits in terms of
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quality of works completed and safety. Neither will it diminish the Contractor‟s responsibility for the
satisfactory performance of formwork.
Basic points to be understood in designing the formwork are stated below:
a)
Erected Form work shall be watertight, shall conform to shape, lines, dimensions,
verticality, rigid during placing, vibrating and configuring the concrete
b)
Formwork system shall be of steel or timber or 12mm thick water resistant Ply board, and
shall be continuous, straight and without any warping.
c)
Design of formwork shall take into account:

Height of pour

Thickness of member

Rate of pour

Concrete slump

Texture of finish

Placing temperature

Concrete density

Construction joints

Wind load

Method of Discharge
d)
Form work design shall have

Dimensional tolerance

De mountable without shock, disturbance or damage to concrete
e)
All construction joints in beams and slabs shall be provided as shown in drawings.
f)
Ties shall be provided where required
g)
Cambers shall be provided where shown.
h)
Props / supports of extra ceiling height shall be specially designed.
4.6
Form Work Material
Construction formwork with smooth faced plywood, steel or timber to produce smooth straight level and
sharp profiles shall be used for the works. Panels to be of design of optimum size to reduce the number
of joints.
a)
Form material shall have strength adequate to withstand pressure of newly placed concrete
without excessive and adjustable bow or deflection.
b)
Factory fabricated, adjustable length removable or snap of metal form ties, design to prevent
from deflection and to prevent spilling concrete surfaces on removal.
c)
Ties shall be such that
A portion remaining within the concrete shall be at least 38mm from the outer concrete
surface.
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That will not leave a hole larger than 25mm dia meter on the concrete surface.
d)
Form coating compound that will not bond with, stain, not adversely effect concrete for
required bond or adhesion not hamper the wetting of surface to be covered with water or curing
compound.
All propping and centering shall be of adjustable steel supports (built-up sections of rolled steel) and
tubular props to full height without joints, and with sufficient bracing to take into account the construction
loads, namely full load of concrete with any live load and impact load likely to occur during concreting.
Steel shuttering used for concreting shall be sufficiently stiffened. The steel shuttering shall also be
properly repaired before sue and properly cleaned to avoid stains and defects in concreting.
4.7
Workmanship
Formwork shall be classified based on the ultimate finishes required of the concrete surface as:

Textured or decorative finish

Fair-faced finish

Rough finish
4.7.1 The Contractor shall account for all material and labour to achieve the above finishes to the
satisfaction of the Employer in his quoted price.
4.7.2 Guidelines for Good Workmanship
Following are a few points as guidelines for good workmanship in formwork and shall be accounted
for in his quoted price.

Erection of formwork may be from pre-moulded, pre-fabricated, pre-assembled plates or form
reasonable enough to transport and erect at site to correct lines and levels as set at site.

Supports shall be firm and maintained in position by nails, cross bracing, tie-rods, locking bolts,
nuts, etc. It shall be rigid and stiff so as to retain its shape during and after concreting.

Joints shall be water-tight and no cement slurry shall be allowed to get through

Pre-fabricated or site forms shall be assembled so as to de-shutter without any jerk to the green
concrete. For this double wedges shall be used. The wedges shall be nailed. The heads left
with, allowing easy removal while de-shuttering.

Pre-fabricated or site formwork shall be sufficient thickness with supporting spans in both
directions. These shall be standardised in size for easy replacement and universal use at site

Props shall be of steel only. Its spacing shall be as per design. It shall be vertical and plumbed.
Base shall be of proper steel plate or timber plank for equal distribution of load

Contractor‟s shall remove the tag provided by the plywood manufactures present on plywood
board while using he same.

In case of multi-storied buildings, any upper floor shall be suitably supported on at least one floor
below the same, or as approved by the Employer.

Props shall be adequately cross-braced horizontally

At the design and erection stage following additional points shall be considered and be
incorporated into the setting
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
Opening of cleaning prior to the start of concreting

Pouring points shall avoid high drops and provide easy access to vibrating needles

Surfaces shall be treated with suitable releasing oil or emulsion prior to the reinforcement laying.
Such releasing oil shall be got approved from the Employer.

Ensure that forms and adjacent surfaces are thoroughly cleaned to receive concrete and debris.

Locate construction joints in a manner so as not to impair strength and appearance of structure.
Following points shall be observed very carefully:

Joints of formwork shall be watertight. It is easy to check from the bottom and make sure no light
is visible

Props shall be on solid base, plumbed, in straight line, braced horizontally and cross

Tie-bars, bracing and spacers in beams, walls and columns shall be at correct place/location and
fully tight

Wedges shall be fully secured and nailed with heads left out for easy removal

All saw dust, dirt, shavings and any other unwanted material shall be cleaned and hosed out

Provision shall be made for watching formwork while concreting and any other platform needed
for movement of workers without any disturbance to the reinforcement

Provision is made for traffic on formwork : not to bear directly on reinforcing steel.

Number of reuses shall be decided by the Employer on examining the condition of formwork after
each use. If during concreting any weakness develops or formwork shows any distress, the work
shall be stopped and remedial action taken.
4.7.3 Finishing Formed Surfaces
The Contractor shall:
-
Repair and patch defective areas with fins and other projections completely removed or
smoothed.
-
To smooth concrete where fins and other projections have formed moisten concrete surface
within a day after forms have been removed and rub with carborundum stone until surface is a
uniform colour and texture within the projection limits.
-
Not apply cement ground other than that produced by the rubbing process.
-
Remove and replace concrete having defective surfaces if defects cannot be repaired to the
satisfaction of the superintendent.
Surface defects shall include colour and texture irregularities, cracks, spills, air bubbles, honeycombs,
rock pockets, fins and other projection on the surface, stain and form tie holes.
The Contractor shall:
-
Undercut voids larger than 25mm diameter and fill with fresh concrete after thoroughly wetting
concrete surfaces.
-
Fill small holes and irregularities using 2:1 (Portland cement to fine sand by volume) grout mixed
with approved bonding admixture according to manufacturer‟s specification.
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Blend standard Portland cement with white Portland cement
if necessary so that final colour of
dry grout will match adjacent surfaces.
-
After applying grout to repair area, wipe with Hessian cloth to match adjacent texture and within
the specified surface tolerances.
-
Keep concrete patch damp with fog *spray for at least 36 hours.
4.8
Measurements
Formwork shall be measured as the area (in square meters) of shuttering in contact with the concrete
including covers, angles, splays, mitres, bevels, etc. for which no special rate shall be allowed.

It shall be measured to the nearest centimeter and the area worked out correct to two decimal
places

No deduction shall be made for openings up to 0.4 square meter in plan

Area of voids shall deducted from the face area of shuttering.

No deductions shall be made from formwork of main beams where a secondary beam intersects
it. Formwork for secondary beams shall be measured up to sides of the main beams.

No deduction shall be made from the formwork to column casings at intersection of beams.

Lapping of formwork with previously laid out concrete will not be measured and will not be paid
for.

The quoted rate shall be applicable for all working conditions and at all heights and depths or lifts
specified in the drawings. The rate shall include the cost of materials and labour for various
operations involved including, but not limited to the following:

Provision of formwork, its erection and treatment of the concrete surface immediately after
removal of the formwork

Holes to be made in the formwork for inserting electrical conduits, piping for plumbing works, etc

Centering, bracing, tightening with bolts and nuts, staging, etc.

Splayed edges, notchings, allowance for overlaps, centering, shuttering, strutting, bolting, nailing,
welding, casing striking and removal.

Filling to form stop chamfered edges or splayed external angles to footings, beams, columns and
the like.

Temporary openings in the forms for pouring concrete and removing rubbish.

Dressing with oil/approved emulsion to prevent adhesion of concrete with shuttering.

Raking or cutting.

Fixing inserts and openings at the correct line and level and at any stage to support the same at
the directed height and place.

Platforms if any to check forms while concreting is in progress.

Filling and making joints watertight to the satisfaction of the Employer.

Cleaning of the shuttering.

Cleaning the complete floor immediately on deshuttering complete to enable the start of next
activity.
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Cleaning and washing of the complete floor during and after concreting to avoid any damage to
finished surface. It will be responsibility of the Contractor to protect and retain all finished
surfaces.
Should there be any laitance due to concreting of upper floors or other construction activities within the
said floor the Contractor shall be responsible to do all that is required to bring the finish back to the
original or as specified in the Technical Specification/ directed by the Employer.
No payment shall be made for temporary formwork used in concreting nor for formwork required for joints
or buttheads, in floors or elsewhere whether such joints are to be covered late with concrete or mastic or
other material.
4.9
Tolerances
Tolerance is a specified permissible variation from lines, grades or dimensions given in drawings. No
tolerances are specified for horizontal or vertical encroachments beyond the legal boundaries. Unless
otherwise specified, tolerances given in the following sections shall be permitted.
4.9.1
Tolerance for RCC Buildings
Variation from plumb should be as follows:

In the lines and surface of columns, walls, and other vertical members, viz inside face of lift
shaft, etc. 3 mm per 3.0 meter but not exceeding 10mm for the full height of the building.




For exposed corner column and other conspicuous lines
In any bay up to 5 m maximum
3 mm
In 10 m or more bays
5 mm
Soffits of slabs, ceilings and beams
2.5 m bays
3 mm
5.0 m bays
3 mm
10.0 m or more
10 mm
Lintels, sills, parapets, grooves and other conspicuous lines
In any bay up to 5 m maximum
3 mm
In 10 m or more
5 mm
Variation of the linear building lines from established positions in plan and related position
of columns, wall and partitions
In bay up to 5 m maximum
5 mm
In 10 m or more

10 mm
Deviation from dimensions of footing / foundation:
(i)
Dimension in plan (+) 50mm
(ii)
Eccentricity in plan: 0.02 times the width of the footings in the direction of
deviation but not more than 50mm
(iii)
Thickness: (+) 0.05 times the specified thickness.
(iv)
Surface of foundation against ground: -5mm, +10mm
(v)
Top surface of foundations, bases, piers: +5mm, -20mm
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Technical Specification
Variation in sizes and location of sleeves, opening in walls and floors to be 5 mm (except
for anchor bolts)

Variation in cross-sectional dimension of columns and beams and thickness of slabs and
walls -5 mm, +10 mm

Variation in steps
In a flight of stairs
Risers
Treads
In flight of stairs
3 mm
5 mm
In consecutive steps
1.5 mm
3 mm
All the tolerances mentioned above shall apply to concrete dimensions only, and not to positioning of
vertical steel or dowels.
4.10
Removal of Formwork:
Formwork shall not be struck until the concrete has reached a strength at least twice the stress to which
the concrete may be subjected at the time of removal of formwork.

Formwork shall be removed carefully without jarring the concrete and curing of the
concrete shall commence immediately. Sudden shocks / vibrations during removal of wedges shall be
avoided. Where finished edges have re-entrant angles, remove formwork as early as possible to avoid
shrinkage cracks.

Concrete surfaces to be exposed shall where required by the Employer, be rubbed with
carborandum stone to give a smooth and even finish.

Where concrete requires plastering or other finish later, the concrete surface shall be
hacked as directed.

4.10.1
No extra charge will be allowed to the Contractor for such work.
Minimum time Requirements
For other cements the stripping time shall be suitably modified in consultation with the Employer.
For precast moulds the stripping time shall be 24 hours.
Striking time shall be as follows:
Type of Formwork
Minimum period before striking
(excluding the day of
casting)
i.
Walls, columns
12 hrs
ii.
Vertical faces
12 hrs
iii
Removal of formwork with props fully left under
spanning over 6m
7 days
iv
Between ribs not more than 1 to 2 m
7 days
v.
Ribs, joists, beams, soffits
-
Up 3m clear span - Beams
7 days
-
Between 3m to 6m - Beams
14 days
-
Above 6m clear span beams
21 days
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Technical Specification
One way floor slabs - up to 3m
7 days
vii. One way floor slabs - between 3m to 6m
10 days
viii One way floor slabs - over 6m
14 days
ix
Beams and Girder Sides
12 days
x.
Removal of props below slabs spanning over 6m
21 days
Striking of Formwork within the time limits listed above is subject to successful crushing of cubes
compressive strength results. However re-shuttering and re-propping can be done if the required strength
is attained as per the instructions of Employer / Employer‟s Personnel
4.11
Cleaning and Oiling of Forms
The contactor shall ensure that the surface of the forms that will touch the concrete shall be free from
encrustations of mortar, grout, or other foreign material. Temporary openings shall be left at the bottom of
formwork to enable sawdust, shavings, wire off-cuts and other foreign material to be removed from the
interior of the forms before the concrete is placed. Compressed air shall be used to clean the complete
formwork and remove all traces of duct and debris before pouring concrete the temporary holes shall then
be closed.
The surface of the forms to be in contact with the concrete shall be coated with a reliable coating that will
effectively prevent the adherence of concrete and will not stain the concrete surfaces. After each use, the
surfaces of forms which have been in contact with concrete shall be cleaned of mortar and any other
material sticking to them, then well wetted and treated with form oil approved by the Employer.
The Contractor shall provide commercial form release agent that will not bond with, stain or adversely
affect concrete surfaces and will not impair subsequent treatment of concrete surfaces.
4.12
Openings / Inserts
Contractor shall provide all required openings, pockets, inserts as detailed in drawings. The Contractor
shall provide required material and labour for fixing and supporting during concreting. In its quoted price,
it is imperative to consider that all openings and pockets shall be de-shuttered with care and all corners of
openings shall be preserved, ie shall be in correct line and level. After concreting the openings shall be
secured against any accident by proper covering and guard rail, warning notice, lighting, etc for which no
extra cost is payable to the Contractor.
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Technical Specification
SECTION - 7
STEEL REINFORCEMENT
1.1
Related Works
A. Concrete Formwork
B. Cast in-situ Concrete
3.1.a
Applicable Standards
IS - 432
Specification for Mild steel and medium tensile bars and hard drawn steel
wire.
IS - 1139
Specification for hot rolled mild steel, medium tensile steel and high yield
strength steel deformed bars for concrete reinforcement.
IS - 1566
Specification for plain hard drawn steel wire fabric for concrete
reinforcement
IS - 1785
Specification for plain hard drawn steel wire for prestressed concrete.
IS - 1786
Specification for cold twisted steel high strength deformed bars for concrete
reinforcement.
IS - 2080
Specification for high tensile steel bars used in prestressed concrete
IS - 2751
Code of practice for welding of mild steel structures are folded plates
IS - 2502
Code of practice for bending and fixing of bars for concrete reinforcement
1.2
Steel Grades
Reinforcements for concrete may be from any of the “grades” of steel indicated below, conforming to the
relevant Indian Standards and their latest amendments mentioned against each:
Grade
Description
Conforming to
Fe 250
Mild Steel
IS 432 (Part I)
Fe 490
Hard drawn steel wire
IS 432 (Part II)
Fe 415
High strength deformed/ ribbed steel
IS 1786
Fe 500
High strength deformed / ribbed steel
IS 1786
Fe 550
High strength deformed / ribbed steel
IS 1786
Reinforcing steel may be any of the following types:
Type I
Plain round bars (PR)
Type II
Welded wire Fabrics (WWF)
Type III
Cold Twisted Deformed Bars / Corrosion resistant bars. (CTD-CR)
Type IV
Thermo-Mechanically Treated Ribbed bars (TMT)
Type V
Thermo-Mechanically Treated Ribbed Corrosion Resistant bars (Copper)
Bearing (TMT-CR)
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1.3
Technical Specification
BIS Certification
Material received at the Site shall have BIS Certification mark. Such bundle or coil containing the bars
shall be suitably marked with BIS Certification mark. Bars shall also be marked to identify categories.
This shall be done as per IS: 1387.
In case bars are without BIS Certification mark, the manufacturer shall give a certificate stating the
process of manufacture, chemical composition and mechanical properties. Each certificate shall indicate
the number or identification mark of the cart to which it applies, corresponding to the number or
identification mark to be found on the material.
All reinforcements shall be free from loose mill scale, excessive rust, loose rust, pitting, oil, grease, paint,
mud or any other foreign deleterious material present on the surface. Cleaning should be done to the
satisfaction of the Employer / Employer‟s Personnel .
Each batch of steel brought to the Site shall be tested prior to use. Cost of all tests shall be borne by the
Contractor.
Material acceptable as per IS Specifications will be allowed into the Project. All rejected material shall be
removed from the Site by the Contractor within 30 days of its rejection. If the same is not done, the
Employer can get work done by third party at the Contractor‟s risk and cost shall impose a penalty of Rs
500 (Rupees Five Hundred only) per metric ton per day. This will be without any appeal and shall not be
subjected to arbitration.
1.4
Storage
Reinforcement bars received at the Site shall be stored on hard, concreted platform and clear of the
ground to a minimum of 200 mm with the use of timber sleepers or any other means. Reinforcements
shall be kept covered by tarpaulins or plastic to avoid excessive corrosion or any other contamination. It
is advised to follow storage methods as described in IS: 4082.
Reinforcement steel shall be stored in such a manner as to avoid distortion and to prevent deterioration
and corrosion. Prior to assembly of reinforcement no account any oily substance shall be used for
removing the rust.
1.5
Quality Assurance
a.
Supervisory staff shall have qualification and experience in the above field.
b.
Welders qualified and having approved certificates for welding shall be employed.
1.6
Handling
a.
Bend / rebend test requirements shall conform to the following and shall be based on 1800
bends of full size bars around pins.
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Technical Specification
Bar diameter (mm)
10, 12,16
3.5 x bar dia
20, 22, 25
5.0 x bar dia
28, 30, 32
7.0 x bar dia
Pin diameter for test bend
b.Spacers of same dia shall be used with any of the following:
i. Wire
ii. Precast concrete
iii. Moulded plastic
Spacer material shall be of durable quality and shall not lead to corrosion of reinforcement or spilling of
concrete.
Precast concrete spacers shall be of the same mix as that of surrounding concrete.
c. Tying wire shall be of 18 G black annealed mild steel wire or other approved type double fold to tie
the reinforcements.
d. Cover blocks shall be non-corrosive material such as plastic, but not wooden or broken bricks or
stone. Specially made concrete blocks shall be used. Such cover blocks shall be cast from concrete
and not from cement mortar; strength of these blocks shall be equal to the concrete in use.
e.Binding wire for fixing reinforcement shall be either no.16 gauge soft Galvanised annealed
iron wire, or no.18 gauge stainless steel wires.
1.7
Unit Weights:
Unit weights payable per meter shall be as follows:
6 mm 
0.22 kg/ rm
8 mm 
0.39 kg/ rm
10 mm 
0.62 kg/ rm
12 mm 
0.89 kg/ rm
14 mm 
1.21 kg/ rm
16 mm 
1.58 kg/ rm
18 mm 
2.00 kg/ rm
20 mm 
2.47 kg/ rm
22 mm 
2.98 kg/ rm
25 mm 
3.85 kg/ rm
28 mm 
4.83 kg/ rm
32 mm 
6.31 kg/ rm
36 mm 
7.99 kg/ rm
40 mm 
9.86 kg/ rm
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1.8
Execution
1.8.1
Cutting and Bending
Technical Specification
a.
Flame cut and hot bending is absolutely forbidden.
b.
Cut and bend reinforcement to approved shop drawings and details shall be used.
c.
Bars to be cold-bend, either mechanically or by hand, but to correct radius using proper
tools, machine and platform and confirming to IS 2502-1963.
d.
Do not rebend without approval. In case of re bending, care shall be taken that the rating
of bend is not less than 4 x bar dia at construction joints for plain steel bars and 6 x bar dia
for high strength bars.
e.
Reinforcement projecting from concrete shall not be bent without approval.
Bar bending schedule to be submitted for approval of the Structural Consultant to the Employer
prior to commencement of any cutting, bending and binding of steel at site.
F
g.
Cracked end of bars shall not be used on this Project.
Bars should be inspected for visible defects such as cracks, brittleness, excessive rust, loose
mills scale, etc.
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1.8.2
a.
Technical Specification
Welding
Do not weld reinforcement unless authorized by the Employer / Employer‟s Personnel and
recommended by the manufacturers.
b.
Site welding shall be done with suitable safeguards and techniques.
c.
Welding, if approved, may be used for:
i. Lapping reinforcement in position
ii. Fixing reinforcement to other steel members.
d.
The length of run deposited in a single pass shall not exceed 5 x bar diameters. If a longer
welded length is required divide into sections with the space between runs not less than 5 x bar
diameters.
e.
Welded joints:
i.
Shall not be made at bends in reinforcement.
ii.
Stagger joints in parallel bars of principal reinforcement unless otherwise approved.
iii.
The distance between staggered joints shall not be less than the end anchorage length joints.
1.8.3
Mechanical Splicing
a.
To comply with ISI 456-2000. ACI 318-1983 and ACI 439-3R-83
b.
Use as indicated in structural drawings.
c.
Consultant has to approve mechanical splices before using it at site.
Inspection
a.
Ensure that the reinforcement placing is checked by Employer / Employer‟s Personnel .
b.
Ensure that the Formwork to receive the reinforcement is clean and free from debris.
c.
Cracked end of bars to be cut out.
1.8.4
Anchoring
Anchoring of bars and stirrups shall be provided exactly as detailed in the structural drawings or as
directed by Employer / Employer‟s Personnel .
In case of reinforcement steel in tension, deformed bars may be used without end anchorage provided
the development length requirement is satisfied. Hocks shall normally be provided for plain bars in
tension. Development length of the bars shall be determined as per relevant clauses of IS: 456 - 2000.
The anchorage length of straight bar in compression shall be equal to the Development length of the bars
in compression as specified in relevant clause of IS: 456 - 2000.
1.8.5
Lapping of Bars
Laps shall be strictly as per the structural drawing or as directed by the Development Manager/Structural
Consultant. For general guidance the following principles shall be followed as given in IS: 456 - 2000

As far as possible bars of the maximum length available shall be used.

Laps shown on drawings or otherwise specified by the Structural Consultant will be based
on the Contractor using bars of maximum length.
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
Technical Specification
In case Contractor wishes to use bars of shorter length, laps shall be provided at the
Contractor‟s expense in the manner and the locations approved by the Structural
Consultant.

Splices shall be provided as far as possible away from the sections of maximum stress
and be staggered.

Not more than half of the bars shall be spliced at a section

If more than half of the bars shall be spliced at a section, special case shall be ensured
such as increasing length of lap or closer spacing of stirrups around the length of splice.

Lap splice shall not be used for bars having diameter larger than 36 mm. For larger
diameters bars it may be welded. Lap length including anchorage value of hooks in flexural tension
shall be La (as defined in Article 25.2.1 of IS: 456-2000) or 30 times the diameter of the bar whichever
is greater and for direct tension 2La or 30 times the diameter of the bar whichever is greater. The
straight length of lap shall not be greater than 15D or 20 cm, whereas D is the diameter of the bar.

Lap length in compression shall be equal to the development length in compression
calculated as described in relevant clause of IS: 456-2000 or as specified in the structural drawing but
not less than 24 times the diameter of the bar.

Overlapping bars shall not touch each other and these shall be kept apart with concrete
between them by 25mm or 1.25 times the maximum size of the coarse aggregate, whichever is greater.

When above is not possible, the overlapping bars shall be bound together at intervals not
exceeding twice the diameter of such bars with two strands of annealed binding wire of 0.90mm to
1.6mm diameter twisted together tightly.

As and when necessary welded laps shall be proved as specified by the Structural
Consultant.
1.8.6
Securing Reinforcement
a.
Adequately secure with tying wire or approved steel clips.
b.
Bend the tying wires well back clear of forms.
1.8.7
Concrete Cover
a.
Shall be in accordance with ISI: 456-2000 and as per the instructions in structural drawings.
i.Footings, retaining walls and Similar members in contact
with earth but not cast against earth
- 50 mm
ii.
Slabs
-
20 mm
iii.
Walls, ribs
-
20 mm
iv.
Beams:
For main bars
-
Min.25 mm or dia. of the bar
For stirrups
-
15 mm
Columns
-
40 mm
Columns less than 20 cms
-
25 mm
In contact with water
-
40 mm
In contact with air
-
20 mm
v.
vi.
Water tanks:
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1.8.8
Technical Specification
Walls in contact with water / Earth
-
40mm
Spacers Chairs and Other Supports
a.
Provide necessary supports to maintain reinforcement in its correct position.
b.
Provide spacer bars of same diameter as longitudinal bars but not less than 25mm
diameter between two layers at 1.5 mm centers except where bundled bars are detailed.
1.8.9
Precautionary Measures
a.
Do not insert bars into placed concrete.
b.
Do not damage forms and form linings, if any when fixing reinforcement.
1.8.10 Adjustment and Cleaning
a.
Check reinforcement prior to and during placing concrete with particular attention to the top
reinforcement in Cantilever sections.
b.
Ensure that reinforcement is clean and free from corrosive pitting, loose rust, loose mill scale, oil
and other substances, which may adversely affect reinforcement concrete or the bond between
the two.
c.
Protect the projecting reinforcement from weather where the rust staining of exposed concrete
surfaces may occur.
1.9
Measurements
The method of measurement shall be accordance with the IS: 1200 subject to the following.
Reinforcement shall be measured in lengths of bars as actually placed in position on standard weight
basis, no allowance being made in the weight for rolling margin. Wastage and binding wire shall not be
measured.Authorised overlaps and splices shall only be measured. Rate quoted shall include the cost
of welding if specified.
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Technical Specification
SECTION - 8
STRUCTURAL STEEL WORKS & ANTI-CORROSIVE TREATMENT
TABLE OF CONTENTS
1.0
Scope
2.0
General Requirements
3.0
Codes & Standards
4.0
Materials
5.0
Fabrication Drawing
6.0
Fabrication
7.0
Shop Inspection and approval
8.0
Painting and Delivery
9.0
Field Erection
10.0
Final acceptance and handling over of structure
11.0
Miscellaneous steel works
12.0
Tolerances allowed in the erection of plant building without cranes
13.0
Common Weld Defects for filler welds in Structural Steel Fabrication
14.0
Extent of Inspection and Testing.
15.0
Mode of measurement
16.0
Proforma of Guarantee Certificate.
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Technical Specification
STRUCTURAL STEEL WORK
1.00
Scope :
The Fabrication and Erection of the Steelwork consist of accomplishing of all Works herein
enumerated including providing all labour, tools and plants, all materials and consumables
such as welding electrodes, bolts and nuts, oxygen and acetylene gases, oils for cleaning, etc.
of approved quality as per relevant Indian Standards. The work shall be executed in a
workman like manner to the complete satisfaction of Employer / Employer‟s representative.
2.00
General requirements :
2.01
This Specification covers the Supply, Fabrication, Painting, Transportation to site and Erection
on prepared Foundations, Structural Steelwork consisting of Columns, Beams, Lattice girders,
trusses, purlins, bracing, built-up sections, sag rods, girts, etc.
2.02
Fabrication, Erection and approval of Steel Structures shall be in compliance with :
2.03
-
These General Specifications, IS : 800 and other relevant Indian Standards as listed in
clause 12.
-
Drawings and supplementary drawings to be supplied to the Contractor by during
execution of the work.
In case of conflict between the clauses mentioned here and the Indian Standards, those
expressed in this Specification shall govern.
3.00 CODES AND STANDARDS
The applicable Indian Standard and code is given below:
IS 123
:
RED OXIDE PRIMER
IS 277
:
GALVANIZED STEEL SHEETS (PLAIN &
CORRUGATED)
IS 459
:
CORRUGATED & SEMI-CORRUGATED A.C. SHEETS
IS 730
:
HOOK BOLTS FOR CORRUGATED SHEET ROOFING
IS 800
:
COP FOR GENERAL CONSTRUCTION IN STEEL
IS 806
:
COP FOR USE OF STEEL TUBES IN GENERAL
BUILDING CONSTRUCTION
IS 808
:
DIMENSIONS OF HR STEEL BEAMS, CHANNELS &
ANGLES
IS 811
:
COLD FORMED LIGHT GAUGE STRUCTURAL
STEEL SECTIONS
IS 812
:
GLOSSARY OF TERMS RELATING TO WELDING &
CUTTING
IS 813
:
SCHEME OF SYMBOLS FOR WELDING
IS 814 (P 1 & 2)
:
COVERED ELECTRODES FOR METAL ARC
WELDING OF STRUCTURAL STEELS
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Technical Specification
IS 815
:
CLASSIFICATION CODING OF COVERED
ELECTRODES FOR METAL ARC WELDING OF
STRUCTURAL STEELS
IS 816
:
COP FOR METAL ARC WELDING FOR GENERAL
CONSTRUCTION IN MS
IS 817
:
COP FOR TRAINING & TESTING OF METAL ARC
WELDERS
IS 822
:
COP FOR INSPECTION OF WELDS
IS 875(P 1 TO 5)
:
COP FOR DESIGN LOADS FOR BUILDINGS &
STRUCTURES
IS 961
:
HIGH TENSILE STRUCTURAL STEELS
IS 1079
:
HR CARBON STEEL SHEET & STRIP
IS 1161
:
STEEL TUBES FOR STRUCTURAL PURPOSES
IS 1200 (P 8)
:
METHOD OF MEASUREMENT OF STEEL WORK &
IRON WORK
IS 1200 (P 9)
:
METHOD OF MEASUREMENT OF ROOF COVERING
& CLADDING
IS 1200 (P 14)
:
METHOD OF MEASUREMENT OF GLAZING
IS 1200 (P 15)
:
METHOD OF MEASUREMENT OF PAINTING
IS 1239 (P 1 & 2)
:
MS TUBES & TUBULARS
IS 1254
:
CORRUGATED ALUMINIUM SHEETS
IS 1363(P 1 TO 3)
:
IS 1364(P 1 TO 5)
:
HEXAGON HEAD FASTENERS OF PRODUCT
GRADE „C‟
HEXAGON HEAD FASTENERS OF PRODUCT
GRADE A & B
IS 1367
(P1 TO 18)
:
:
TECHNICAL SUPPLY CONDITIONS FOR THREADED
STEEL FASTENERS
IS 1477 (P 1 & 2)
:
COP FOR PAINTING OF FERROUS METALS IN
BUILDINGS
IS 1626 (P 2 & 3)
:
A.C. GUTTERS, PIPES & ROOFING ACCESSORIES
IS 1852
:
ROLLING & CUTTING TOLERANCES FOR HR
STEEL PRODUCTS
IS 1977
:
STRUCTURAL STEEL - ORDINARY QUALITY
IS 2016
:
PLAIN WASHERS
IS 2062
:
WELDABLE STRUCTURAL STEEL
IS 2074
:
RED OXIDE ZINC CHROME PRIMER
IS 2339
:
ALUMINIUM PAINT
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Technical Specification
IS 2527
:
COP FOR FIXING GUTTERS & RAIN WATER PIPE
FOR ROOF DRAINAGE
IS 2932
:
SYNTHETIC ENAMEL PAINTS
IS 3007 (P 1 &2)
:
COP FOR LAYING A.C. SHEETS
IS 3444
:
CRANE RAIL SECTIONS
IS 3502
:
STEEL CHEQUERED PLATES
IS 3548
:
COP FOR GLAZING IN BUILDING
IS 4000
:
COP FOR ASSEMBLY OF STRUCTURAL JOINTS
USING HSFG FASTENERS
IS 4923
:
HOLLOW STEEL SECTIONS FOR STRUCTURAL
USE
IS 5372
:
TAPER WASHERS FOR CHANNELS
IS 5374
:
TAPER WASHERS FOR BEAMS
IS 5624
:
FOUNDATION BOLTS
IS 6639
:
HEXAGONAL BOLTS FOR STEEL STRUCTURES
IS 7205
:
SAFETY CODE FOR ERECTION OF STRUCTURAL
STEELWORK
IS 7215
:
TOLERANCES FOR FABRICATON
IS 8869
:
WASHERS FOR CORRUGATED SHEET ROOFING
IS 12093
:
COP FOR LAYING & FIXING SLOPED ROOF
COVERINGS USING PLAIN & CORRUGATED
GALVANISED STEEL SHEETS
IS 12843
:
TOLERANCES FOR ERECTION OF STEEL
STRUCTURES
COP
:
Code of Practice
4.00
MATERIALS :
4.01
Rolled Sections
The following grades of steel shall be used for steel structures.
4.1.01 Structural steel shall conform to IS 2062 Gr. „A‟ (for thickness upto 20 mm) & IS 2062 Gr. „B‟
(for thickness above 20 mm).
4.1.02 For purlins and girts cold rolled Z sections of TI Metal sections Ltd. or equivalent shall be used.
Z sections shall be manufactured from tested HR coils to IS : 10748 and the sections shall
conform to IS : 801 and IS : 811.
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Technical Specification
The size and sectional properties shall be as follows :
Span
4M
5M
Size
Thickness
(mm)
150230
165255
Zx
(top)
3
cm
Zx
(bottom)
3
cm
Zy
cm
2.3
31.14
29.92
8.56
2.55
36.40
35.55
8.26
3
Z purlin shall be supplied with sleeves duly drilled / punched, sag rods and fasteners.
4.02
WELDING MATERIALS :
4.2.01 Welding Electrodes shall conform to IS : 814 & AWS
E 6013 | For thickness
upto 20mm
| For thickness
| above20mm-AWS
| E7018
4.2.02 Approval of welding procedures shall be as per IS : 816
4.03
BOLTS, NUTS AND WASHERS :
Bolts and nuts shall be as per IS 1363 & IS 1367 class 8.8. Washers shall be as per IS :
2016, IS : 5372 & IS : 5374.
4.04
All materials shall conform to their respective specifications. The use of Equivalent or higher
grade or alternate materials will be considered only in very special cases subject to the
approval of the Architect in writing.
Any defective material used, pointed out at any stage of work, shall be replaced by Contractor
at his own expenses. Care shall be taken to prevent any damage to the other portion of work
during removal.
4.05
Receipt and Storing of Materials :
4.5.01 Each rolled section must be marked for identification and each lot should be accompanied by
Manufacturer‟s quality certificate, confirming chemical analysis and mechanical characteristics.
4.5.02 All steel parts furnished by Supplier shall be checked, sorted out, straightened and arranged by
grades and qualities in stores.
4.5.03 Structurals with surface defects such as pitting, cracks, laminations etc. shall be rejected if the
defects exceed the allowable tolerances specified in relevant Standards.
4.5.04 Welding electrodes shall be stored separately by qualities and lots inside a dry and enclosed
room, in compliance with IS : 816 and as per instructions given by Architect. Electrodes shall
be perfectly dry and drawn from an Electrode oven, if required.
4.5.05 Checking of quality of bolts of any kind as well as storage of same shall be made conforming to
relevant standards.
4.5.06 Each lot of electrodes, bolts, nuts etc. shall be accompanied by Manufacturer‟s test certificates.
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Technical Specification
4.5.07 The Contractor may use alternative materials as compared to Design Specifications only with
the written approval of Employer / Employer‟s representative.
4.06
Material Tests :
4.6.01 Contractor shall be required to produce Manufacturer‟s quality certificate for the material or
wherever quality certificates are missing or incomplete or when material quality differs from
standard Specifications the Contractor shall conduct all appropriate tests as directed by the
Employer / Employer‟s representative, at no extra cost, in approved test houses. Contractor to
appoint TPI for quality certification to the satisfaction of PMC. Contractor has to carryout
material test as per QAP in the approved lab.
4.6.02 Materials for which Test Certificates are not available or for which test results do not tally with
relevant standard Specification, shall not be used.
5.00
Fabrication Drawings :
5.01
Fabrication and erection drawings shall be prepared by the Contractor on the basis of Design
drawings supplied to him and submit the same to Employer / Employer‟s representative for
review in triplicate. Architect may review at his option some, all or none of the Fabrication
drawings. Wherever such reviews are carried out, the same shall be restricted to the following
:
-
Structural layout, orientation and elevation of Structures and
Members.
Sizes of members
Adequacy of critical connections and joints for required strength.
Shop / Field welding details from view point of erection.
5.02
In those cases where EIC carries out either full, or partial review, one copy of drawing
submitted by the Contractor shall be returned to him and Contractor shall incorporate the
amendments and submit further three copies of amended drawings for final review. In those
cases where EIC does not review the drawings, he shall return 1 copy of drawings, stamped
“Not reviewed proceed at Contractor‟s responsibility”, to the Contractor for further action.
5.03
Fabrication drawings shall include the following :
-
Structural layout and Elevations
-
Sizes of Structural Members
-
Adequacy of Connections and joints
-
Design and detailing of structural joints for required strength and erection
-
Type and dimension of welds and bolts
-
Shapes and sizes of edge preparation for welding
-
Details of shop and field joints included in the Assembly
-
Bill of Materials
-
Quality of Structural steel, welding electrodes, bolts, nuts and washers to be used
-
Erection assemblies identifying all transportable parts and sub-assemblies associated
with special erection instructions, if required.
Non Destructive Testing (NDT)
-
Crane Girders - 20% Dye Penetrant Examination (DPE) of rootruns.
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Technical Specification
- 10% radiography of all butt welds including “T” joints
Others
- 10% DPE to be conducted by ASNT level II qualified person.
5.04
Review by EIC fully/partially or non-review of Fabrication drawings submitted by Contractors
shall not absolve the Contractor of his responsibility and he shall modify /rectify the structures
at any stage of work when pointed out by Architect that such work is not in conformity with
specification and/or standard practice.
5.05
Connections, splices etc. other details not specifically detailed in Design drawings shall be
suitably given on Fabrication drawings considering normal detailing practices and developing
full member strengths. Where asked for calculations for the same, these shall also be
submitted for approval.
5.06
Any alternate design or change in section is allowed only when approved in writing by the
Architect.
5.07
However if any variation in the scheme is found necessary later, the Contractor shall
incorporate these changes in his Shop Drawings, at no extra cost and resubmit for review.
5.08
The contractor shall supply six prints each of the final reviewed drawings to Architect within a
week from the date of final review, at no extra cost, for reference and record of Employer /
Employer‟s representative.
5.09
The Architect will verify the correct interpretation of his requirements.
5.10
If any modification is made in the Design drawing during the course of execution of the work,
revised Design drawings will be issued to the Contractor. Further changes arising out of these
shall be incorporated by the Contractor in the Fabrication drawings already prepared at no
extra cost and the revised Fabrication drawings shall be duly got reviewed as per the above
clauses.
6.00
Fabrication:
6.01
Fabrication shall be in accordance with IS : 800 Section - V in addition to the following :
Fabricator to submit methodology and Qualification Matrix for approval by Employer /
Employer‟s representative.
Fabrication shall be done as per approved Fabrication drawings adhering strictly to work points
and work lines on the same. The connections shall be welded or bolted as per Design
drawings. Work shall also include fabricating built up sections. (Fabrication of basic rolled
sections equivalent from plates is not included).
All the fabricated and delivered items shall be suitably packed to be protected from any
damage during transportation and handling. Any damage caused at any time shall be made
good by the Contractor at his cost.
Any faulty fabrication pointed out at any stage of work shall be made good by the Contractor at
his cost.
6.02
Preparation of Materials:
6.2.01 Prior to release for fabrication, all rolled sections warped beyond allowable limits shall be
pressed or rolled straight and free from twists, taking care that uniform pressure is applied.
6.2.02 Minor warpings, corrugations etc. in rolled sections shall be rectified by cold working.
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6.2.03 The sections shall be straightened by hot working where the Architect so directs and shall be
cooled slowly after straightening.
6.2.04 Warped members like plates and flats may be used as such only if wave like deformation does
not exceed L/1000 but limited to 3 mm (L = Length).
6.2.05 Surfaces of Members that are to be joined by lap or fillet welding or bolting shall be even so
that there is no gap between overlapping surfaces.
6.03
Marking :
6.3.01 Marking of Members shall be made on horizontal pads, or on appropriate racks or supports in
order to ensure horizontal and straight placement of such Members.
6.3.02 Marking accuracy shall be within ± 1 mm.
6.04
Cutting :
6.4.01 Members shall be cut mechanically (by saw or shear) or by oxyacetylene flame.
6.4.02 All sharp, rough, or broken edges, and all edges of joints which are subjected to tensile or
alternating stresses, shall be ground.
6.4.03 No electric metal arc cutting shall be allowed.
6.4.04 All edges cut by oxyacetylene process shall be cleaned of impurities and slag prior to
assembly.
6.4.05 Cutting tolerances shall be as follows :
a)
For members connected at both ends ± 1 mm
b)
Elsewhere ± 3 mm.
6.4.06 The edge preparation for welding of members more than 12 mm thick shall be done by flame
cutting and grinding. Cut faces shall not have cracks or be rough.
6.4.07 Edge preparation shall be as per IS : 816
6.05
Drilling :
6.5.01 Bolt holes shall be drilled. Materials of thickness upto 16 mm, may be punched.
6.5.02 Drilling shall be made to the diameter specified in drawings.
6.5.03 No enlarging of holes by filing, mandrilling or oxyacetelene flame shall be allowed.
6.5.04 Allowable variations for holes (out of roundness, eccentrictly, plumb-line deviation) shall be as
per IS : 800.
-
Maximum deviation for spacing of two holes on the same axis shall be ± 1 mm.
-
Two perpendicular diameters of any oval hole shall not differ by more than 1 mm.
6.5.05 Drilling faults in holes may be rectified by reaming holes to the next upper diameter, provided
that spacing of new hole centres and distance of hole centres to the edges of members are not
less than allowed and that the increase of hole diameter does not impair the structural strength.
Hole reaming shall be allowed if the number of faulty holes does not exceed 15% of the total
number of holes for one joint.
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6.5.06 Unless otherwise noted in the drawing
6.06
-
Pitch of holes
- 3D
Edge distance-Shear
and edge
- 1.5 D
Rolled edge
- 1.25 D
Bending :
6.6.01 Bending of plates, flats and sections shall be carried out on bending rolls or in presses.
6.6.02 Cold bending may be accepted when bending radius is equal or more than ;
-
25 times member thickness for plates and flats
-
25h or 25b for rolled steel beams and channels according to bending plane
-
45b for angle
Where h = section height and b = flange width.
6.6.03 When bending radius is less than that indicated in 6.6.02, bending shall be done by heating the
o
member up to 850 - 900 C (light red radiance). Cooling shall be done slowly as directed by
Architect.
o
6.6.04 Bending shall be discontinued when temperature drops below 500 C.
6.6.05 Accuracy of bending operations shall be checked by means of Templates as approved by PMC
/Architects and the clearance between member and template shall not be more than 1 mm.
6.6.06 Bent members shall not have cracks or deep indentations from bending equipment.
6.07
Preparation of Members for Welding :
6.7.01 Assembly of structural Members shall be made with proper jigs and fixtures to ensure correct
positioning of members (angles, axes, nodes, etc.)
6.7.02 Sharp edges, rust of cut edges, notches, irregularities and fissures due to faulty cutting shall be
chipped or ground or filled over the length of the affected area, deep enough to remove faults
completely.
6.7.03 Edge preparation for welding shall be carefully and accurately made so as to facilitate a good
joint.
6.7.04 Generally no special edge preparation shall be required for members under 8 mm thick.
6.7.05 Edge preparation (bevelling) denotes cutting so as to result in V,X,K or U seam shapes as per
IS : 816.
Unless otherwise noted in the drawing
:
< 6 mm
8 - 11 mm
> 12 mm
- Square butt
- Single V
- Double V
6.7.06 The members to be assembled shall be clean and dry on the welding edges. Under no
circumstances shall wet, greasy, rust or dirt covered parts be assembled. Joints shall be kept
free from any foreign matter, likely to get into the gaps between members to be welded.
6.7.07 Before assembly the edges to be welded as well as adjacent areas extending for atleast 20
mm shall be cleaned (until metallic polish is achieved).
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6.7.08 When assembling members, proper care shall be taken of welding shrinkage and distortions,
as the drawing dimensions cover finished dimensions of the Structure.
6.7.09 The elements shall be got checked and approved by the Employer / Employer‟s representative
before assembly.
6.7.10 The permissible Tolerances for assembly of members preparatory to welding shall be as per IS
: 816.
6.7.11 After the assembly has been checked, temporary tack welding in position shall be done by
electric welding, keeping in view finished dimensions of the Structure.
6.7.12 Preheating of members to be joined to be carried out as per standards wherever necessary.
6.08
Welding Procedures :
6.8.01 Welding shall be carried out only by fully trained and experienced welders as tested and
approved by the Architect or his representative or the Inspectors. The cost involved for such
tests shall be borne by the Contractor himself.
6.8.02 Qualification tests for Welders as well as tests for approval of electrodes will be carried out as
per IS : 816. The nature of test for performance qualification of welders shall commensurate
with quality of welding required on this work as judged by the Employer / Employer‟s
representative
Unless otherwise noted in the drawing : < 20 mm - Electrodes to AWS E 6013
> 20 mm - Electrodes to AWS E 7018
6.8.03 The Steel structures shall be automatically, semi-automatically or manually welded.
6.8.04 Welding shall begin only after the checks shown under 6.7 have been carried out.
6.8.05 Welding precedures and Tests for Welders skill shall be conducted as per IS : 816 and
approved by the Employer / Employer‟s representative
6.8.06 The welder shall mark his Identification mark on each element welded by him.
6.8.07 When welding is carried out in open air, steps shall be taken to protect the place of welding
against wind or rain. The electrodes, wires and parts being welded shall be dry.
6.8.08 Before beginning the welding operation, each joint shall be checked to ensure that the parts to
be welded are clean and root gaps provided as per IS : 816.
6.8.09 For continuing the welding of seams discontinued due to some reason, the end of the
discontinued seam shall be melted in order to obtain a good continuity. Before resuming the
welding operation, the groove as well as the adjacent parts shall be well cleaned for a length of
approximately 50 mm.
6.8.10 For single butt welds (in V,1/2V or U) and double butt welds (in K, double U, etc) the rewelding
of the root butt is mandatory but only after the metal deposition on the root has been cleaned
by back gouging or chipping.
6.8.11 The welding seams shall be left to cool slowly. The Contractor shall not be allowed to cool the
welds quickly by any method.
6.8.12 For multi-layer welding, before welding the following layer, the formerly welded layer shall be
cleaned by light chipping and wire brushing. Backing strips shall not be allowed.
6.8.13 The order and method of welding shall be so that :
-
no unacceptable deformation appears in the welded parts
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due margin is provided to compensate for contraction due to welding in order to avoid
any high permanent stresses.
6.8.14 The defects in welds must be rectified according to IS : 816 and as per instruction of Architect.
6.09
Weld Inspection :
6.9.01 The weld seams shall satisfy the following :
-
shall correspond to Design shapes and dimensions.
-
shall not have any defects such as cracks, incomplete penetration and fusion, undercuts, rough surfaces, burns, blow holes and porosity etc. beyond permissible limits
(See Annexure-I).
-
Welding has to be inspected for material, weld fit up, NDT, Hydro test, stress relieving,
hydro test, etc as applicable.
6.9.02 During the welding operation and approval of finished elements, inspections and tests shall be
made as shown in Annexure - II.
6.9.03 The mechanical characteristics of the welded joints shall be as in IS : 816.
6.10
Preparation of Members for Bolting :
6.10.01 The Members shall be assembled for bolting with proper jigs and fixtures to sustain the
assemblies without deformation and bending.
6.10.02 Before assembly, all sharp edges, shaving, rust, dirt etc. shall be removed.
6.10.03 Before assembly, the contacting surfaces of the members shall be cleaned and given a coat of
red oxide primer.
6.10.04 The members which are bolt assembled shall be set according to drawings and temporarily
fastended with erection bolts (minimum 4 pieces) to check the coaxiality of the holes.
6.10.05 The members shall be finally bolted after the deviations have been corrected, after which there
shall not be gaps.
6.10.06 Before assembly, the member shall be checked and got approved by the Architect.
6.10.07 The difference in thickness of the Sections that are butt assembled shall not be more than 3%
or maximum 0.8 mm whichever is less. If the difference is large, it shall be corrected by
grinding or filling.
6.10.08 Reaming of holes to final diameter or cleaning of these, shall be done only after the parts have
been check assembled.
6.10.09 As each hole is finished to final dimensions (reamed if necessary) it shall be set and bolted up.
Erection bolts shall not be removed before other bolts are set.
6.11
Bolting Up :
6.11.01 Final bolting of the members shall be done after the defects have been rectified and approval
of joints obtained.
6.11.02 The bolts shall be tightened starting from the centre of the joint towards the edge.
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Technical Specification
Holes for Field Joints :
6.12.01 Holes for field joints shall be drilled in the shop to final diameters and tested in the shop, with
trial assemblies. Gas cutting of holes shall not be permitted.
6.12.02 When three-dimensional assembly is not possible in the shop, the holes for field joints may be
drilled in shop and reamed on site after Erection, on approval by the Architect.
6.12.03 For bolted steel structures, trial assembly in shop is mandatory.
6.12.04 The tolerance for spacing of holes shall be ± 1 mm.
6.13
Tolerances :
6.13.01 All tolerances regarding dimensions, geometrical shapes and sections of
Steel Sections, shall be as per IS 808 & IS 1852, if not specified in the
drawing.
6.14
Marking for Identification :
6.14.01 All elements and members prior to despatch for Erection shall be shop
marked.
6.14.02 The members shall be visibly marked with a weather proof light coloured paint. The size and
thickness of the numbers shall be so chosen as to facilitate the identification of members.
6.14.03 For the small members that are delivered in bundles or crates, the required marking shall be
done on small metal tags securely tied to the bundle, while the crates shall be marked directly.
6.14.04 Each bundle or crate shall be packed with members for one and the same assembly in the
same bundle or crate, general utility members such as bolts, gussets, etc. may be packed.
6.14.05 All bill of materials showing weight, quality and dimension of contents shall be placed in the
crates.
6.14.06 The members shall be marked with a durable paint, in a visible location, preferably at one end
of the member so that these may be easily checked during storage and erection.
6.14.07 The members shall be marked in the shop before inspection and acceptance.
6.14.08 When the member is being painted, the marking area shall not be painted but bordered with
white paint.
6.14.09 The marking and job symbol shall be registered in all shop delivery documents (transportation,
for erection etc.)
6.15
Shop Test Pre-assembly :
6.15.01 For Steel Structures that have the same type of welding the shop test pre-assembly shall be
performed on one out of every 10 members minimum.
6.15.02 In case one member does not meet the limiting deviations specified in the general specification
in pre-assembly shop test, all members shall be shop tested.
6.15.03 For bolted Steel Structures, shop test pre-assembly is mandatory for all elements as well as for
the entire structure in conformity with relevant IS code.
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7.00
7.01
Technical Specification
Shop Inspection and Approval :
General :
The Employer / Employer‟s representative shall have free access at all reasonable times to the
Contractor‟s Fabrication Shop and shall be afforded all reasonable facilities for satisfying
himself that the Fabrication is being undertaken in accordance with Drawings and
Specifications.
7.1.01 Technical approval of the Steel Structure in the shop Employer / Employer‟s representative is
mandatory.
7.1.02 The Contractor shall not limit the number and kinds of Tests, final as well as intermediate ones,
or extra tests requested by the Employer / Employer‟s representative.
7.1.03 The Contractor shall furnish necessary tools gauges, instrument etc. and technical and nontechnical personnel for shop tests required by Employer / Employer‟s representative, free of
cost.
7.02
Shop Acceptance :
The Employer / Employer‟s representative shall inspect and approve at the following stages.
7.2.01 The following approvals may be given in shop :
-
Intermediate approvals of work that cannot be inspected later.
-
Partial approvals.
-
Final approvals.
7.2.02 Intermediate approvals of work shall be given when a part of the work is performed later
-
Inspection would be difficult to perform and results not be satisfactory.
-
Cannot be inspected later
7.2.03 Partial approval in the shop is given on members and assemblies of Steel Structures before the
primer coat is applied and includes :
-
-
Approval of material
-
Approval of field joints
-
Approval of part with planed surface
-
Test Erection
-
Approval of members
-
Approval of markings
Inspection and approvals of special features, like rollers, loading platform mechanism
etc.
7.2.04 During the partial approval, intermediate approvals as well as former approvals shall be taken
into consideration.
7.03
Final Approval in the Shop :
7.3.01 The final approval refers to all elements and assemblies of the Steel Structures with shop
primer coat, ready for delivery from shop, to be loaded for transportation or stored.
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7.3.02 The final approval comprises :
-
Partial approvals.
-
Approvals for shop primer coat
-
Approval of mode of loading and transport
-
Approval of storage (for materials stored)
7.3.03 Inspection by EIC shall be only at random and on critical factors and shall not absolve the
contractor of the responsibility to fabricate the structures as per the specified standards &
specifications.
8.00
Painting and Delivery :
8.01
Preparation of Parts for Shop Painting and Site Painting :
8.1.01 Painting shall consist of providing one coat of zinc chromate primer and one coat of
anticorrosive enamel paint of approved make and colour to steel members before despatch
from shop.
Site Painting :
After providing one coats of primer and one finish coat at shop as mentioned above, at site
after erection one more coat of anticorrsive enamel paint shall be provided. Touching up shall
be done wherever required and on site welded surfaces and as directed.
8.1.02 Primer coat shall not be applied unless :
-
Surfaces have been sandblasted to clean, dust, oil, rust, etc.
-
Erection gaps between members spots that cannot be painted or where moisture or
other aggressive agents may penetrate have been filled with an approved type of oil
and putty.
-
The surfaces to be painted are completely dry.
-
Members and parts have been inspected and accepted.
-
Welds have been accepted.
8.1.03 The following are not to be painted or protected by any coating.
-
Surfaces which are in the vicinity of joints to be welded at SITE.
-
Surfaces bearing markings.
-
Other surfaces indicated in the Design.
8.1.04 The following shall be given a coat of hot oil or any approved resistant
lubricant only:
-
Planed surfaces.
-
Holes for links.
8.1.05 The surfaces that are to be embedded or in contact with the concrete, shall not be painted.
8.1.06 The other surfaces shall be given a primer coating.
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8.1.07 Special attention shall be given to locations not accessible, where water can collect and which
after assembly and erection cannot be inspected, painted and maintained. Holes shall be
provided for water drainage and inaccessible box type sections shall be hermatically sealed by
welds.
8.02
Packing, Transportation, Delivery :
8.2.01 After final shop acceptance and marking, the item shall be packed and loaded for
transportation.
8.2.02 Packing must be adequate to protect items against warping during loading and unloading.
8.2.03 Proper lifting devices shall be used for loading, in order to protect items against warping.
8.2.04 Slender projecting parts shall be braced with additional steel bars before loading for protection
against warping during transportation.
8.2.05 Loading and transportation shall be done in compliance with transportation rules.
8.2.06 If certain parts cannot be transported in the lengths stipulated in the Design, the position and
type of additional splice joints shall be approved by Architect.
8.2.07 Items must be carefully loaded on platforms for transportation with adequate means to prevent
warping, bending or falling during transportation.
8.2.08 The small parts such as fish plates, gussets etc. shall be securely tied with wire to their
respective parts.
8.2.09 Bolts, nuts and washers shall be packed and transported in crates or bags.
8.2.10 The parts shall be delivered in the order stipulated by the Architect and shall be accompanied
by documents showing:
8.03
-
Quality and quantity of structure of members
-
Position of member in the structure
-
Particulars of structure
-
Identification number/job symbol
ANTI CORROSIVE TREATMENT FOR STRUCTURAL STEEL
8.3.01 Preparation of surface :
It shall be sand blasted to standard SSPC - SPIO (Sa 2-1/2) with surface profile not exceeding
50 microns.
8.3.02 First Coat :
One coat of epoxy polyamide based Red Oxide Zinc Phosphate Primer of Dry Film Thickness
(DFT) 25 microns. Berger paints epilux 610 primer or equivalent should be used.
Mixing Ratio
:
Base
:
Catalyst 3:1 by volume
Application
:
Brush roller airless and conventional spray.
Theoretical spreading rate : 13 Sqm / Ltr.
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Drying Time
Touch Dry
:
1 hour
Dry to handle
:
4 hours
Hard Dry
:
Overnight
Curing Time
:
6 - 7 days
Colour
:
Red Oxide
8.3.03 Second Coat :
It Shall be as per first coat given above.
8.3.04 Third Coat :
One coat of Epoxy Polyamide based finish - Berger paints Epilux 4, Shalimar enamel or
equivalent to DFT of 35 microns. Colour should be specified by the Client / Architect.
Type
:
Two pack, cold cured
Composition
:
Catalyzed epoxy resin suitably pigmented
:
Catalyst 3:1 by volume
Application
:
Brush, roller, airless & conventional spray
Theoretical
spreading rate
:
13 Sqm / Ltr.
Touch Dry
:
2 - 3 hours
Dry to handle
:
6 - 8 hours
Hard Dry
:
Overnight
Curing Time
:
6 - 7 days
Minimum
:
Overnight
Maximum
:
5 days
Finish
:
Glossy
Mixing Ratio :
Base
Drying Time
Overcoating Interval
8.3.05 Fourth Coat :
It Shall be as per third coat given above.
8.03.06 DRY FILM THICKNESS (DFT)
Total dry film thickness should be 120 microns and shall be checked with
Elcometer.
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9.00
Field Erection:
9.01
The Contractor shall satisfy himself about the levels, lines etc. of the Foundations well in
advance, before starting the Erection. Minor chipping etc. shall be carried out by the
Contractor at his expense. Contractor has to take all precautionary measures to ensure
earthing for structural steel works during erection.
9.02
Any faulty Erection done by the Contractor shall be made good at his cost.
9.03
Approval by the Architect or his representative at any stage of work does not relieve the
Contractor of any of his required guarantees of the Contract.
9.04
Storage and Preparation of Parts prior to Erection :
9.4.01 The storage place for Steel Parts shall be prepared in advance and got approved by the
Architect before the Steel structures start arriving from the shop.
9.4.02 A platform shall be provided by the Contractor near the Erection Site for preliminary Erection
work.
9.4.03 The contractor shall make the following verifications upon receipt of material at site.
-
For Quality Certificates regarding Materials and Workmanship according to these
general Specifications and Drawings.
-
Whether parts received are complete without defects due to transportation, loading and
unloading and defects, if any, are well within the admissible limit.
9.4.04 For the above work sufficient space must be alloted in the storage area.
9.4.05 Step shall be taken to prevent warping of items during unloading.
9.4.06 The parts shall be unloaded, sorted and stored so as to be easily identified.
9.4.07 The parts shall be stored according to construction symbol and markings so that these may be
taken out in order of Erection.
9.4.08 The parts shall be set at least 150 mm clear from ground on wooden or steel blocks for
protection against direct contact with ground and to permit drainage of water.
9.4.09 If rectification of members like straightening etc. are required, these shall be done in a special
place alloted which shall be adequately equipped.
9.4.10 The parts shall be clean when delivered for Erection.
9.5
Erection and Tolerances :
9.5.01 Erection in general shall be carried out as required and approved by Employer / Employer‟s
representative
9.5.02 Positioning and levelling of the structure, alignment and plumbing of the Stanchion and fixing
every member of the structure shall be in accordance with the relevant drawings and to the
complete satisfaction of the Employer / Employer‟s representative.
9.5.03 The following checks and inspection shall be carried out before, during and after Erection.
- Damages during transportaion.
- Accuracy of alignment of Structures
- Erection according to Drawings and Specifications.
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- Progress and workmanship.
9.5.04 In case there be any deviations regarding positions of foundations, or anchor bolts, which
would lead to Erection deviations, the Architect shall be informed immediately. Minor
rectifications in foundations, orientation of bolt holes etc. shall be carried out as a part of the
work, at no extra cost.
9.5.05 The various parts of the Steel Structure shall be so erected as to ensure stability against
inherent weight, wind and Erection stresses.
9.5.06 The structure shall be anchored and final erection joints completed after plan and elevation
positions of the Structural members have been verified with corresponding drawings and
approved by Employer / Employer‟s representative.
9.5.07 The bolted joints shall be tightened so that the entire surface of the bolt heads and nuts shall
rest on the member. For parts with sloping surfaces, tapered washers shall be used.
9.5.08 Site painting after erection shall be as per clause 8.1.01
10.00 Final Acceptance and Handling Over of Structure :
10.01 At acceptance, the Contractor shall submit the following Documents :
a)
Shop and Erection Drawings - either in tracings or reproducibles.
b)
6 copies each of the following.
-
Shop acceptance documents
-
Quality Certificates for Structurals, Plates, electrodes, welding wire, bolts,
nuts, washers etc.
-
List of Certified Welders, who worked on Erection of Structure. ( With
documents or qualification tests)
-
Acceptance and Intermediate Control Procedure of Erection Operations.
10.02
Approval by the Architect at any stage of work does not relieve the Contractor of any of his
required guarantees of the Contract.
11.00
Miscellaneous Steelwork :
11.01 Anchor Bolts :
All materials supplied by the Contractor shall be of tested quality as per Specifications below
and Test Certificates of raw materials shall be provided by the Contractor.
Fabrication of Anchor Bolts shall be in compliance with the Specifications. Complete Anchor
Bolt assembly shall be as per drawings, and will include the cost of sleeve pipes, bottom
plates, and other fixtures including all welding work if involved.
a)
Bolts shall be turned from M.S rounds conforming to IS 2062 Gr „A‟
b)
Nuts shall be Hexagonal type conforming to IS 1363.
c)
Plain washers shall be of mild steel conforming to IS 2016/IS 2062 Grade „A‟
d)
Threads shall be of coarse type conforming to IS 1367 & IS 4218.
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The surface not to be covered with concrete shall be greased and protected from damage by
wrapping and tying jute cloth/polythene.
12.00
Tolerances allowed in the Erection of Plant Building without Cranes :
The maximum tolerances for line and level of the Steelwork shall be ± 3.0 mm on any part of
the Structure. The Structure shall not be out of plumb more than 5.0 mm on each 10 M section
of height and not more than 8.0 mm per 30 M section.
These tolerances shall apply to all parts of the Structure unless the Drawings issued for
Erection purposes state otherwise.
Component
Main
column
and roof posts
Description
Variation Allowed
a)
Shifting of column axis at
foundation level with respect to
building line :
i.
In longitudinal direction
± 5.00 mm
ii.
In lateral direction
± 5.00 mm
b)
Deviation of both Major Column
Axis
from
Vertical
between
Foundation and Other Member
connection Levels.
i.
For a Column upto and including
10 M height.
± 5.00 mm from True
Vertical.
ii.
For a column greater than 10 M
but less than 40 M height.
± 5.00 mm from True
Vertical for any 10 M
length
measured
between
connection
levels, but not more
than ± 8.00 mm for
upto 40 M height.
c)
For Adjacent Pairs of Columns
across the width of the Building
prior to placing of Truss.
± 5.00 mm of True
Span.
d)
For individual Column Deviation of
any Bearing or resting level from
levels shown on Drawings.
± 5.00 mm
e)
For Adjacent Pairs of Columns
either across the width of Building
or Longitudinally Level Difference
allowed between Bearing or
± 5.00 mm
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Component
Trusses
Crane girders
and tracks
Setting of
Expansion
Gaps
Description
Seating Level supposed to be at
the same level.
Variation Allowed
a)
Deviation of Centre of Span or
Upper Chord Member from Vertical
Plane running through Centre of
Bottom Chord.
1/1500 of the span or
10 mm whichever is
less.
b)
Lateral Displacement of Top Chord
at Centre of Span from Vertical
Plane running through Centre of
Supports.
1/250 of Depth of
Truss or 20 mm
whichever is less.
a)
Difference in levels of Crane rail
measured
between
Adjacent
columns.
± 2.0 mm
b)
Deviation to Crane rail gauge
± 3.0 mm
c)
Relative Shifting of Ends of
Adjacent Crane Rail in Plan and
Elevation after Thermit Welding.
± 2.0 mm
d)
Deviation of Crane Rail Axis from
Centre Line of Web.
± 3.5 mm
At the time of setting of the Expansion
Gaps, due regard shall be taken of the
Ambient Temperature above or below
o
30 C. The co-efficient of Expansion or
Contraction shall be taken as 0.000012
per unit Length per degree celsius.
13.00 COMMON WELD DEFECTS FOR FILLER WELDS IN STRUCTURAL
STEEL FABRICATION
13.01
Incomplete Fusion :
It is defined as the failure to fuse together adjacent layers of weld metal or weld metal and base
metal.
Causes :
13.02
i)
Failure to raise the temperature of base metal (or previously deposited weld metal) to
the melting point.
ii)
Improper cleaning of the oxides or other foreign material present on the surface to
which the deposited metal must fuse.
iii)
In-experienced welders.
Inadequate Penetration :
It is defined as the failure of the filler metal and base metal to fuse integrally at the root of the
weld.
Causes :
Heat transfer conditions such as,
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i)
Use of too large an electrode.
ii)
An abnormally high rate of travel.
iii)
Use of insufficient welding current, is a frequent source of this defect.
13.03. Cracks :
Cracks is defined as in multilayer welds, cracking mostly occurs in the first layer of the weld
and unless repaired, will continue through other layers as they are deposited. Cracks may be
longitudinal, transverse or crater cracks.
Causes :
i)
Improper electrode manipulation or electrical conditions.
ii)
Higher speed of travel resulting in lesser thickness of the deposit.
iii)
Higher base metal thickness (which may require pre-heating.)
iv)
Wrong type of electrode.
13.04. Under cut :
It is defined as the melting away of the sidewall of a joint at the edge of a layer or bead thus
forming a sharp recess in the sidewell.
Causes :
i)
Too high a current
ii)
Too long an arc.
iii)
Magnetic arc below.
13.05 Slag inclusion :
It is defined as oxides and non-metallic solids that are entrapped in weld metal or between
weld metal and base metal.
Causes :
i)
High viscosity of the weld metal.
ii)
Rapid solidfication of weld metal.
iii)
Too low a welding temperature.
iv)
Improper cleaning between passes.
v)
Improper electrode manipulation.
13.06 Porosity :
It is defined as gas pockets or voids, free of any solid material, that are frequently found in
welds. It may be present as uniformly scattered porosity, cluster porosity or linear porosity.
Causes :
i)
Excessive Current.
ii)
Excessive arc length.
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iii)
Wet/unclean joint surfaces.
iv)
Eccentric burning of electrode.
v)
Frequent interruptions.
13.07.01
Incorrect Weld Profiles.
Causes :
i)
Desirable weld profile.
ii)
Acceptable fillet weld profile.
iii)
Insufficient lag.
13.07.02
Insufficient throat.
13.07.03
Excessive convexity.
13.08.
Overlap :
It is defined that the condition in which weld metal protrudes beyond the bond lines at
the toe of a weld.
Causes :
i)
Incorrect welding technique.
ii)
Improper electrical conditions i.e. excessive current or arc
length.
14.0 EXTENT OF INSPECTION AND TESTING
S.No.
Inspection of Test
Coverage
Procedure
1.
Inspection of weld seam
appearance.
All Welds
Naked
lens.
2.
Checking of sizes.
At least one for
each
weld
seam.
Ordinary
measuring
instruments
3.
Mechanical
welding
Test
for
procedures
---
eye
As per IS 816
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or
Evaluation
Findings and
remedy of
defect
All faulty welds
shall
be
rectified.
Should
faulty
weld be found,
all welds shall
be (rule checked
and
all
templates)
defect shall be
rectified.
As per IS 816
Chennai Metro Rail Ltd.,
performance
Electrodes.
15.0
Technical Specification
and
Mode of measurement:
Unless noted otherwise in the bills of quantities, the method of measurement for various items
shall be generally in accordance with IS 1200.
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LIST OF APPROVED MAKES
A
CIVIL WORKS
S.No
Materials
Approved Makes
1
Grey Cement (43/53 Grade)
Ultra tech / Birla/ACC/Dalmia
2
White Cement
Birla / JK
3
Tor Steel (TMT)
SAIL / VIZAG /TISCO /RNIL
4
Structural steel
SAIL / VIZAG/ TISCO
5
Polyrutherene Board
Armour Board / SIL-FIL.
6
Polysulphide Sealant
Dr.Fixit
7
Paints/ Primer
ICI / Asian Paints/ Nerolac
8
Concrete admixture
BASF / Mc Bauchemie /Ceracem
9
Fasteners for Anchors
Hilti / Fischer
10
Interlocking Pavers and Grass paver
Basant Beton / Aeon
11
RCC Factory made Kerbs & Cover Slabs
Basant Beton
12
SS Drains with channels and grating cover
Chilli /Aco NECO
13
Column Guards ( Rubber )
Catex / Arpitha / Dural
Note:
In the List of recommended above, out of makes mentioned in the list, only 1st make shall be quoted
for and used. However if due to non-availability or any other technical reasons, the alternative make is
allowed, it shall be subject to prior approval of the Employer / Employer‟s representative and price
adjustment.
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MODEL RULES FOR THE PROTECTION OF HEALTH AND SANITARY ARRANGEMENTS
FOR WORKERS EMPLOYED BY CONTRACTORS
1.
FIRST-AID-FACILITIES
1.01
At every work place there shall be provided and maintained, so as to be easily
accessible during working hours, first-aid boxes at the rate of not less than one box for
150 labourers or part thereof ordinary employed.
1.02
The first-aid box shall be distinctly marked with a red cross on white back ground and
shall contain the following equipment, :-
1.02.01
1.02.02
For work places in which the number of labour employed does not exceed 50,
each first-aid box shall contain the following equipments:
6 small sterilised dressings

3 medium size sterilised dressings

3 large size sterilised dressings

3 large size sterilised burn dressings

1 (30 ml.) bottle containing a two per cent alcoholic solution of iodine.

1 (30 ml.) bottle containing salvolatile having the dose and mode of
administration indicated on the label.

1 snakebite lancet

1 (30 gms.) bottle of potassium permanganate crystals

1 pair scissors

1 copy of the first-aid leaflet issued by the Director General, Factory
Advice Service and Labour Institutes, Government of India.

1 bottle containing 100 tablets (each of 5 gms.) of aspirin.

Ointment for burns

A bottle of suitable surgical antiseptic solution
For work places in which the number of labour exceed 50.
Each first-aid box shall contain the following equipments.

12 small sterilised dressings

6 medium size sterlised dressings

6 large size sterilised dressings

6 large size sterilised burn dressings

6 (15 gms.) packets sterilised cotton wool

1 (60 ml.) bottle containing a two per cent alcoholic solution of iodine.

1 (60 ml.) bottle containing salvolatile having the dose and mode of
administration indicated on the label.

1 roll of adhesive plaster

1 snakebite lancet

1 (30 gms.) bottle of potassium permanganate crystals

1 pair scissors
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
1 copy of the first-aid leaflet issued by the Director General, Factory
Advice Service and Labour Institutes / Government of India.

A bottle containing 100 tablets (each of 5 gms.) of aspirin.

Ointment for burns

A bottle of suitable surgical antiseptic solution
1.03
Adequate arrangements shall be made for immediate recoupment of the equipment
when necessary.
1.04
Nothing except the prescribed contents shall be kept in the First-aid box.
1.05
The first-aid box shall be kept in charge of a responsible person who shall always be
readily available during the working hours of the work place.
A person in charge of the First-aid box shall be a person trained in First-aid treatment, in
the work places where the number of contract labour employed is 150 or more.
1.06
1.07
In work places where the number of contract labour employed is 750 or more and
hospital facilities are not available within easy distance from the works. First-aid posts
shall be established and run by a trained compounder. The compounder shall be on
duty and shall be available at all hours when the workers are at work.
1.08
Where work places are situated in places which are not towns or cities, a suitable motor
transport shall be kept readily available to carry injured person or person suddenly taken
ill to the nearest hospital.
2.00
DRINKING WATER
2.01
In every work place, there shall be provided and maintained at suitable places, easily
accessible to labour, a sufficient supply of water fit for drinking.
2.02
Where drinking water is obtained from an Intermittent public water supply, each work
place shall be provided with storage where such drinking water shall be stored.
2.03
Every water supply or storage shall be at a distance of not less than 50 feet from any
latrine drain or other source of pollution. Where water has to be drawn from an existing
well which is within such proximity of latrine, drain or any other source of pollution, the
well shall be properly chlorinated before water is drawn form it for drinking. All such
wells shall be entirely closed in and be provided with a trap door which shall be dust and
waterproof.
2.04
A reliable pump shall be fitted to each covered well, the trap door shall be kept locked
and opened only for cleaning or inspection which shall be done at least once a month.
3.0
WASHING FACILITIES
3.01
In every work place adequate and suitable facilities for washing shall be provided and
maintained for the use of labour employed and supervisory staff separately therein.
3.02
Separate and adequate cleaning facilities shall be provided for the use of male and
female labourers and supervisory staff.
3.03
Such facilities shall be conveniently accessible and shall be kept in clean and hygienic
condition.
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4.0
LATRINE AND URINALS
4.01
Latrines shall be provided in every work place on the following scale namely:-
4.01.01Where females are employed there shall be at least one latrine for every 25 females.
4.01.02Where males are employed, there shall be atleast one latrine for every 25 males.
Provided that where the number of males or females exceeds 100, it shall be
sufficient if there is one latrine for 25 males or females as the case may be upto
the first 100, and one for every 50 thereafter.
4.02
Every latrine shall be under cover and so partitioned off as to secure privacy, and shall
have a proper door and fastenings.
4.03
Construction of latrines : the inside walls shall be constructed of masonry or some
suitable heat-resisting nonabsorbent materials and shall be cement washed inside and
outside. Standard sanitary fixtures & fittings shall be provided.
4.04.01
Where workers of both sexes are employed, there shall be displayed outside
each block of latrine and urinal, a notice in the language understood by the
majority of the workers ”For Men only” or “For Women only” as the case may be.
4.04.02
The notice shall also bear the figure of a man or of a woman, as the case may
be.
4.05
There shall be atleast one urinal for male workers upto 50 and one for female workers
upto fifty employed at a time, provided where the number of male or female workmen,
as the case may be exceeds 500, it shall be sufficient if there is one urnial for every 50
males or females upto the first 500 and one for every 100 or part thereafter.
4.06.01
The latrine and urinals shall be adequately lighted and shall be maintained in a
clean and sanitary condition at all times.
4.06.02
Latrine and urinals other than those connected with a flush sewage system shall
comply with the requirements of the Public Health Authorities.
4.07
Water shall be provided by means of tap or otherwise so as to be conveniently
accessible in or near the latrine and urinals.
4.08
Disposal of excreta shall be arranged for by the local sanitary authority, arrangements
for proper disposal of excreta by incineration at the work place shall be made by means
of a suitable incinerator. Alternately excreta may be disposed by providing covered
soak pit.
4.09
The contractor shall at his own expense, carry out all instructions issued to him by
Employer / Architects to effect proper disposal of night soil and other conservancy work
in respect of the contractor‟s workmen or employees on the site. The contractor shall be
responsible for payment of any charges which may be levied by Statutory Authority for
execution of such on his behalf.
5.0
PROVISION OF SHELTER DURING REST
At every place there shall be provided, free of cost, four suitable sheds, two for meals
and the other two for rest separately for the use of men and women labour. The height
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of each shelter shall not be less than 3 metres from the floor level to the lowest part of
the roof. These shall be kept clean and the space provided shall be on the basis of 0.6
sq.m per head.
Provided that the Employer / Architects may permit subject to his satisfaction, a portion
of the building under construction or other alternative accommodation to be used for the
purpose.
6.0
CRECHES
6.01
At every work place, at which 20 or more women worker are ordinarily
employed; there shall be provided two rooms of reasonable dimensions for the
use of their children under at the age of six years. One room shall be used as a
play room for the children and the other as their bedroom. The rooms shall be
constructed with painted masonry walls with light weight roofing.
6.02
The rooms shall be provided with suitable and sufficient openings for light and
ventilation. There shall be adequate provision of sweepers to keep the places
clean.
6.03
The contractor shall supply adequate number of toys and games in the play
room.
6.04
The contractor shall provide one ayaa to look after the children in the creche
when the number of women workers does not exceed 50 and two when the
number of women workers exceed 50.
6.05
The use of the rooms earmarked as creches shall be restricted to children, their
attendants and mothers of the children.
7.0
CANTEENS
7.01
In every work place where the work regarding the employment of labour is likely to
continue for six months and where in contract labour numbering one hundred or more
are ordinarily employed, an adequate canteen shall be provided by the contractor for the
use of such labour.
7.02
The canteen shall be maintained by the contractor in an efficient manner.
7.03
The canteen shall consist of at least a dining hall, kitchen, pantry and washing places
separately for workers and utensils.
7.04
The canteen shall be sufficiently lighted at all times when any person has access to it.
7.05
The floor shall be made of smooth and impervious materials and inside walls shall be
lime-washed or colour washed.
7.06
The premises of the canteen shall be maintained in a clean and sanitary condition.
7.07
Waste water shall be carried away in suitable covered drains and shall not be allowed to
accumulate so as to cause a nuisance.
7.08
Suitable arrangements shall be made for the collection and disposal of garbage.
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7.09
The floor area of the dining hall shall be suitably provided with furniture.
7.10
Sufficient tables, stools, chair or benches shall be available for the number of diners to
be accommodated.
7.10.01
There shall be provided and maintained sufficient utensils crockery,
furniture and any other equipment‟s necessary for the efficient running of
the canteen.
7.10.02
The furniture utensils and other equipment shall be maintained in a clean
and hygienic condition.
7.10.03
Suitable clean clothes for the employees serving in the canteen shall be
provided and maintained.
7.10.04
A service counter, if provided, shall have top of smooth and impervious
material.
7.10.05
Suitable facilities including an adequate supply of hot water shall be
provided for the cleaning of utensils and equipments.
7.11
The food stuffs and other items to be served in the canteen shall be in conformity with
the normal habits of the contract labour.
7.12
The charges for food stuffs, beverages and any other items served in the canteen shall
be based on „No Profit, No Loss‟ and shall be conspicuously displayed in the canteen.
7.13
In arriving at the price of foodstuffs, and other article served in the canteen, the following
items shall not be taken into consideration as expenditure namely:7.13.01
The depreciation and maintenance charges for the building and
equipments provided for the canteen.
7.13.02
The cost of purchase, repairs and replacement of equipments including
furniture, crockery, cutlery and utensils.
7.13.03
The water charges and other charges incurred for lighting and ventilation.
The interest and amounts spent on the provision and maintenance of equipments provided for
the canteen.
4.0
Minimum Safety Requirements (To be made a part of Tender conditions and
BOQ of works related package to address the inclusion of PPE, Scaffold,
Electrical safety measures, House keeping as a minimum)
Prior to commencing work on Site, the Contractor must make itself aware of all the
requirements for the Works and the Site relating to Environment, Health & Safety
(EH&S) matters including all relevant legislation and standard codes of practice.
Contractor shall comply with all the EH&S Requirements listed below which
shall be deemed a fundamental condition of this Contract.
1. Contractor must comply in full with all applicable Health & Safety (H&S) local
and national legislation. (e. g. Labour Licence, Insurance Policy under
Workmen Compensation Act, etc.)
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In circumstances where there is a conflict between local or national
legislation and these Minimum Safety Requirements (MSR), the higher
(more protective) requirement shall prevail.
2. Guardrails are to be provided at all working places and other locations where
persons or materials could fall more than 2.0m / 6'6". Where this can physically
not be achieved, suitable and sufficient fall protection devices that do not rely
on individuals should be provided and used to establish a safe place of work.
(Examples include Safety Nets closely installed under height works, Stretched
wire ropes installed to hook up safety harnesses while workers move from one
location to another at height, Use of full body safety harnesses with double
lanyards etc.)
Full body harness with double lanyard
Proper Access to workplatform
3. All persons working on suspended scaffolds/cradles/gondolas must wear and
use appropriate fall prevention equipment so as to protect them effectively at
all times when they are at risk from any failure of any part of the
scaffold/cradle/gondola, including its suspension system.
4. Free-standing scaffold towers used externally must not be higher to the top
platform level than three times the minimum base dimension, unless secured to
a permanent structure. For internal use only, the height to platform may rise to
3.5 times the minimum base dimension. Wheels must be locked when towers
are in use. No person is permitted to remain on a tower platform while a tower
is being moved.
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Mobile Scaffolds
5. Holes, shafts and edges from or through which persons could fall a distance of
more than 2 metre /6ft 6in must be clearly marked with signage or other means
and be adequately protected by covers or barriers so as to prevent falls of
persons and materials.
Holes, Shafts, Floor Penetrations
6. All temporary electrical circuits must include a Residual Current Device, Earth
Leakage Circuit Breaker or Ground Fault Circuit Interrupter at source.
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Temporary Electrical System
7. Powered cranes and hoists, aerial platforms and scissors lifts must have a
competent driver, certified by a qualified third party. Additionally, the above
items must be certified as safe to use by a local government approved third
party.
8. Adequate lighting must be provided to enable safe access to and egress from
every place on a site where persons are liable to work, this is in addition to task
lighting.
9. Induction/Orientation
All workers shall receive site-specific safety induction/orientation, before they are
involved in any activity at site. They must be made aware of site safety rules,
provisions of first aid and welfare facilities such as drinking water, washing place,
toilets, rest rooms, etc.
10. Task related Safety Instruction
Contractor shall ensure all workers shall receive at least one specific task-related
training/skilling session per week. This may be achieved by using Toolbox talks
&/or induction to Safe Work Method Statement.
11. Incident/Injury Reporting & Investigation
Contractor shall report and record all incidents, which have potential to cause
injuries and damages and also injuries including first aid cases.
Lost Time Injury (LTI) or serious injury must be intimated immediately as soon as
possible by phone. (If an injured person doesn‟t likely to report to work in his next
following shift, it is to be recorded as Lost Time Injury)
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12. Job Safety Analysis & Safe Work Method Statement
Contractor must produce detailed Job Safety Analysis / Safe method of work
for approval and use only approved work methods only. No work shall start
without approved Job Safety Analysis / Safe Work Method Statement. All
workers and supervisors must be inducted to Job Safety Analysis / Safe
method of work.
(iii) Oxygen / Acetylene / Fuel Gases/ Compressed or Liquefied Gases
(a) All gas cylinders shall be stored, transported and handled as per the
requirements of Gas Cylinder Rules, 1981.
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