088000_Glazing_rev1

088000_Glazing_rev1
THE ALLAN P. & MARIAN SUTHERLAND
KIRBY CENTER FOR THE CREATIVE ARTS
WYOMING SEMINARY
SECTION 088000
GLAZING
PART 1 - GENERAL
1.1
A.
1.2
A.
RELATED DOCUMENTS:
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
SUMMARY:
This Section includes glazing for the following products and applications, including those
specified in other Sections where glazing requirements are specified by reference to this
Section:
1.
2.
3.
4.
5.
6.
1.3
Windows.
Doors.
Glazed entrances.
Interior borrowed lites.
Storefront framing.
Glazed curtain walls.
DEFINITIONS:
A.
Manufacturer: A firm that produces primary glass or fabricated glass as defined in referenced
glazing publications.
B.
Interspace: Space between lites of an insulating-glass unit that contains dehydrated air or a
specified gas.
C.
Deterioration of Coated Glass: Defects developed from normal use that are attributed to the
manufacturing process and not to causes other than glass breakage and practices for
maintaining and cleaning coated glass contrary to manufacturer's written instructions. Defects
include peeling, cracking, and other indications of deterioration in metallic coating.
D.
Deterioration of Insulating Glass: Failure of the hermetic seal under normal use that is
attributed to the manufacturing process and not to causes other than glass breakage and
practices for maintaining and cleaning insulating glass contrary to manufacturer's written
instructions. Evidence of failure is the obstruction of vision by dust, moisture, or film on
interior surfaces of glass.
E.
Deterioration of Laminated Glass: Defects developed from normal use that are attributed to the
manufacturing process and not to causes other than glass breakage and practices for
maintaining and cleaning laminated glass contrary to manufacturer's written instructions.
Defects include edge separation, delamination materially obstructing vision through glass, and
blemishes exceeding those allowed by referenced laminated-glass standard.
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Glazing
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F.
1.4
Deterioration of Silvered Mirrored Glass: Defects developed from normal use that are
attributable to the manufacturing process and not to causes other than glass breakage and
practices for maintaining and cleaning silvered mirrored glass contrary to mirrored glass
manufacturer's written instructions. Defects include discoloration, black spots, and clouding of
the silver film.
PERFORMANCE REQUIREMENTS:
A.
General: Provide glazing systems capable of withstanding normal thermal movement and wind
and impact loads (where applicable) without failure, including loss or glass breakage
attributable to the following: defective manufacture, fabrication, and installation; failure of
sealants or gaskets to remain watertight and airtight; deterioration of glazing materials; or other
defects in construction.
B.
Glass Design: Glass thicknesses indicated are minimums and are for detailing only. Confirm
glass thicknesses by analyzing Project loads and in-service conditions. Provide glass lites for
various size openings in nominal thicknesses indicated, but not less than thicknesses and in
strengths (annealed or heat treated) required to meet or exceed the following criteria:
1.
Glass Thicknesses: Select minimum glass thicknesses to comply with ASTM E 1300,
according to the following requirements:
a.
Specified Design Wind Loads: Determine design wind loads applicable to Project
from basic wind speed indicated in miles per hour at 33 feet above grade,
according to ASCE 7, "Minimum Design Loads for Buildings and Other
Structures": Section 6.4.2, "Analytic Procedure," based on mean roof heights
above grade indicated on Drawings.
b.
Probability of Breakage for Vertical Glazing: 8 lites per 1000 for lites set
vertically or not more than 15 degrees off vertical and under wind action.
1)
c.
Maximum Lateral Deflection: For the following types of glass supported on all
four edges, provide thickness required that limits center deflection at design wind
pressure to 1/50 times the short side length or 1 inch, whichever is less.
1)
2)
3)
d.
C.
For monolithic-glass lites heat treated to resist wind loads.
For insulating glass.
For laminated-glass lites.
Minimum Glass Thickness for Exterior Lites: Not less than 6 mm.
Thermal Movements: Provide glazing that allows for thermal movements resulting from the
following maximum change (range) in ambient and surface temperatures acting on glass
framing members and glazing components. Base engineering calculation on surface
temperatures of materials due to both solar heat gain and nighttime-sky heat loss.
1.
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Load Duration: 60 seconds or less.
Temperature Change (Range): 120 deg F, ambient; 180 deg F, material surfaces.
Glazing
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D.
Thermal and Optical Performance Properties: Provide glass with performance properties
specified based on manufacturer's published test data, as determined according to procedures
indicated below:
1.
2.
3.
4.
For monolithic-glass lites, properties are based on units with lites 6 mm thick.
For laminated-glass lites, properties are based on products of construction indicated.
For insulating-glass units, properties are based on units with lites 6 mm thick and a
nominal 1/2-inch- wide interspace.
Center-of-Glass Values: Based on using LBL-44789 WINDOW 5.0 computer program
for the following methodologies:
a.
b.
c.
1.5
U-Factors: NFRC 100 expressed as Btu/ sq. ft. x h x deg F (W/sq. m x K).
Solar Heat Gain Coefficient: NFRC 200.
Solar Optical Properties: NFRC 300.
SUBMITTALS:
A.
Product Data: For each glass product and glazing material indicated.
B.
Samples: For the following products, in the form of 12-inch- square Samples for glass.
1.
2.
3.
4.
5.
Coated vision glass.
Fire-rated glass.
Coated spandrel glass.
Insulating glass for each designation indicated.
For each color (except black) of exposed glazing sealant indicated.
C.
Glazing Schedule: Use same designations indicated on Drawings for glazed openings in
preparing a schedule listing glass types and thicknesses for each size opening and location.
D.
Product Certificates: Signed by manufacturers of glass and glazing products certifying that
products furnished comply with requirements.
E.
Qualification Data: For firms and persons specified in "Quality Assurance" Article to
demonstrate their capabilities and experience. Include lists of completed projects with project
names and addresses, names and addresses of Architects and Owners, and other information
specified.
F.
Preconstruction Adhesion and Compatibility Test Report: From glazing sealant manufacturer
indicating glazing sealants were tested for adhesion to glass and glazing channel substrates and
for compatibility with glass and other glazing materials.
G.
Product Test Reports: From a qualified testing agency indicating the following products
comply with requirements, based on comprehensive testing of current products:
1.
2.
3.
4.
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Coated float glass.
Insulating glass.
Coated spandrel glass.
Glazing sealants.
Glazing
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WYOMING SEMINARY
5.
Glazing gaskets.
H.
SWRI Validation Certificate: For each elastomeric glazing sealant specified to be validated by
SWRI's Sealant Validation Program.
I.
Warranties: Special warranties specified in this Section.
1.6
QUALITY ASSURANCE:
A.
Installer Qualifications: An experienced installer who has completed glazing similar in
material, design, and extent to that indicated for Project and whose work has resulted in
construction with a record of successful in-service performance.
B.
Source Limitations for Clear Glass: Obtain clear float glass from one primary-glass
manufacturer.
C.
Source Limitations for Coated Glass: Obtain coated glass from one manufacturer for each type
of coating and each type and class of float glass indicated.
D.
Source Limitations for Insulating Glass: Obtain insulating-glass units from one manufacturer
using the same type of glass and other components for each type of unit indicated.
E.
Source Limitations for Laminated Glass: Obtain laminated-glass units from one manufacturer
using the same type of glass lites and interlayers for each type of unit indicated.
F.
Source Limitations for Glazing Accessories: Obtain glazing accessories from one source for
each product and installation method indicated.
G.
Preconstruction Adhesion and Compatibility Testing: Submit to elastomeric glazing sealant
manufacturers, for testing indicated below, samples of each glass type, tape sealant, gasket,
glazing accessory, and glass-framing member that will contact or affect elastomeric glazing
sealants.
1.
Use manufacturer's standard test methods to determine whether priming and other
specific preparation techniques are required to obtain rapid, optimum adhesion of glazing
sealants to glass, tape sealants, gaskets, and glazing channel substrates.
a.
2.
3.
4.
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Perform tests under normal environmental conditions replicating those that will
exist during installation.
Submit not fewer than nine pieces of each type and finish of glass-framing members and
each type, class, kind, condition, and form of glass (monolithic, laminated, and insulating
units) as well as one sample of each glazing accessory (gaskets, tape sealants, setting
blocks, and spacers).
Schedule sufficient time for testing and analyzing results to prevent delaying the Work.
For materials failing tests, obtain sealant manufacturer's written instructions for
corrective measures, including the use of specially formulated primers.
Glazing
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5.
Testing will not be required if elastomeric glazing sealant manufacturers submit data
based on previous testing of current sealant products for adhesion to, and compatibility
with, glazing materials matching those submitted.
H.
Fire-Rated Door Assemblies: Assemblies complying with NFPA 80 that are listed and labeled
by a testing and inspecting agency acceptable to authorities having jurisdiction, for fire ratings
indicated, based on testing according to NFPA 252.
I.
Fire-Rated Window Assemblies: Assemblies complying with NFPA 80 that are listed and
labeled by a testing and inspecting agency acceptable to authorities having jurisdiction, for fire
ratings indicated, based on testing according to NFPA 257.
J.
Safety Glass: Category II materials complying with testing requirements in 16 CFR 1201.
1.
2.
K.
Glazing Publications: Comply with published recommendations of glass product
manufacturers and organizations below, unless more stringent requirements are indicated.
Refer to these publications for glazing terms not otherwise defined in this Section or in
referenced standards.
1.
2.
L.
Subject to compliance with requirements, permanently mark safety glass with
certification label of Safety Glazing Certification Council or another certification agency
acceptable to authorities having jurisdiction.
Where glazing units, including Kind FT glass and laminated glass, are specified in Part 2
articles for glazing lites more than 9 sq. ft. (0.84 sq. m) in exposed surface area of one
side, provide glazing products that comply with Category II materials, for lites 9 sq. ft.
(0.84 sq. m) or less in exposed surface area of one side, provide glazing products that
comply with Category I or II materials, except for hazardous locations where Category II
materials are required by 16 CFR 1201 and regulations of authorities having jurisdiction.
GANA Publications: GANA'S "Glazing Manual" and "Laminated Glass Design Guide."
SIGMA Publications: SIGMA TM-3000, "Vertical Glazing Guidelines."
Mockups: Before glazing, build mockups for each glass product indicated below to verify
selections made under sample Submittals and to demonstrate aesthetic effects and qualities of
materials and execution. Build mockups to comply with the following requirements, using
materials indicated for the completed Work:
1.
Build mockups with the following kinds of glass to match glazing systems required for
Project, including typical lite size, framing systems, and glazing methods:
a.
b.
c.
2.
3.
4.
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Fully tempered glass.
Coated insulating glass.
Laminated glass.
Notify Architect seven days in advance of dates and times when mockups will be
constructed.
Obtain Architect's approval of mockups before starting fabrication.
Maintain mockups during construction in an undisturbed condition as a standard for
judging the completed Work.
Glazing
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5.
6.
M.
1.7
A.
1.8
A.
Preinstallation Conference: Conduct conference at Project site to comply with requirements in
Division 1 Section "Project Meetings."
DELIVERY, STORAGE, AND HANDLING:
Protect glazing materials according to manufacturer's written instructions and as needed to
prevent damage to glass and glazing materials from condensation, temperature changes, direct
exposure to sun, or other causes.
PROJECT CONDITIONS:
Environmental Limitations: Do not proceed with glazing when ambient and substrate
temperature conditions are outside limits permitted by glazing material manufacturers and
when glazing channel substrates are wet from rain, frost, condensation, or other causes.
1.
1.9
Demolish and remove mockups when directed.
Approved mockups may become part of the completed Work if undisturbed at time of
Substantial Completion.
Do not install liquid glazing sealants when ambient and substrate temperature conditions
are outside limits permitted by glazing sealant manufacturer or below 40 deg F.
WARRANTY:
A.
General Warranty: Special warranties specified in this Article shall not deprive Owner of other
rights Owner may have under other provisions of the Contract Documents and shall be in
addition to, and run concurrent with, other warranties made by Contractor under requirements
of the Contract Documents.
B.
Manufacturer's Special Warranty on Coated-Glass Products: Written warranty, made out to
Owner and signed by coated-glass manufacturer agreeing to furnish replacements for those
coated-glass units that deteriorate as defined in "Definitions" Article, f.o.b. the nearest shipping
point to Project site, within specified warranty period indicated below.
1.
Warranty Period: 10 years from date of Substantial Completion.
a.
C.
Manufacturer's Special Warranty on Insulating Glass: Written warranty, made out to Owner
and signed by insulating-glass manufacturer agreeing to furnish replacements for insulatingglass units that deteriorate as defined in "Definitions" Article, f.o.b. the nearest shipping point
to Project site, within specified warranty period indicated below.
1.
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Spandrel Glass: 5 years from date of Substantial Completion.
Warranty Period: 10 years from date of Substantial Completion.
Glazing
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D.
Manufacturer's Special Warranty on Laminated Glass: Written warranty, made out to Owner
and signed by laminated-glass manufacturer agreeing to furnish replacements for laminatedglass units that deteriorate as defined in "Definitions" Article, f.o.b. the nearest shipping point
to Project site, within specified warranty period indicated below.
1.
Warranty Period: Five years from date of Substantial Completion.
PART 2 - PRODUCTS
2.1
A.
2.2
A.
2.3
PRODUCTS AND MANUFACTURERS:
Products: Subject to compliance with requirements, provide one of the products indicated in
schedules at the end of Part 3.
PRIMARY FLOAT GLASS:
Float Glass: ASTM C 1036, Type I (transparent glass, flat), Quality q3 (glazing select); class
as indicated in schedules at the end of Part 3.
HEAT-TREATED FLOAT GLASS:
A.
Fabrication Process: By vertical (tong-held) or horizontal (roller-hearth) process, at
manufacturer's option, except provide horizontal process where indicated as tongless or free of
tong marks.
B.
Heat-Treated Float Glass: ASTM C 1048; Type I (transparent flat glass); Quality-Q3; of class,
kind, and condition indicated.
1.
2.
3.
4.
5.
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Fabrication Process: By horizontal (roller-hearth) process with roll-wave distortion
parallel to bottom edge of glass as installed, unless otherwise indicated.
Provide Kind HS (heat-strengthened) float glass in place of annealed float glass where
needed to resist thermal stresses induced by differential shading of individual glass lites
and to comply with glass design requirements specified in Part 1 "Performance
Requirements" Article.
For uncoated glass, comply with requirements for Condition A.
For coated vision glass, comply with requirements for Condition C (other uncoated
glass).
Provide Kind FT (fully tempered) float glass in place of annealed or Kind HS (heatstrengthened) float glass where safety glass is indicated.
Glazing
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2.4
A.
COATED FLOAT GLASS:
General: Provide coated glass complying with requirements indicated in this Article and in
schedules at the end of Part 3.
1.
2.
Provide Kind HS (heat-strengthened) coated float glass in place of coated annealed glass
where needed to resist thermal stresses induced by differential shading of individual
glass lites and to comply with glass design requirements specified in "Performance
Requirements" Article. Provide Kind FT (fully tempered) where safety glass is
indicated.
Provide Kind HS (heat-strengthened) coated float glass, except provide Kind FT (fully
tempered) products where coated safety glass is indicated.
B.
Pyrolytic-Coated Float Glass: ASTM C 1376, float glass with metallic-oxide coating applied
by pyrolytic deposition process during initial manufacture, and complying with other
requirements specified.
C.
Sputter-Coated Float Glass: Float glass with metallic-oxide or metallic-nitride coating
deposited by vacuum deposition process after manufacture and heat treatment (if any),
complying with requirements specified in schedules at the end of Part 3.
D.
Ceramic-Coated Spandrel Glass: ASTM C 1048, Condition B, Type I, Quality-Q3, and
complying with other requirements specified.
1.
2.5
Fallout Resistance: Provide spandrel units identical to those passing the falloutresistance test for spandrel glass specified in ASTM C 1048.
LAMINATED GLASS:
A.
Laminated Glass: Comply with ASTM C 1172 for kinds of laminated glass indicated and other
requirements specified, including those in the Laminated-Glass Schedule at the end of Part 3.
B.
Interlayer: Interlayer material as indicated below, clear or in colors, and of thickness indicated
with a proven record of no tendency to bubble, discolor, or lose physical and mechanical
properties after laminating glass lites and installation.
1.
C.
Laminating Process: Fabricate laminated glass to produce glass free of foreign substances and
air or glass pockets as follows:
1.
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Interlayer Material: Polyvinyl butyral sheets.
Laminate lites with polyvinyl butyral interlayer in autoclave with heat plus pressure.
Glazing
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2.6
A.
INSULATING GLASS:
Insulating-Glass Units: Preassembled units consisting of sealed lites of glass separated by a
dehydrated interspace, and complying with ASTM E 774 for Class CBA units and with
requirements specified in this Article and in the Insulating-Glass Schedule at the end of Part 3.
1.
Provide Kind HS (heat-strengthened) float glass in place of annealed glass where needed
to resist thermal stresses induced by differential shading of individual glass lites and to
comply with glass design requirements specified in "Performance Requirements" Article.
Provide Kind FT (fully tempered) where safety glass is indicated.
B.
Overall Unit Thickness and Thickness of Each Lite: Dimensions indicated in the InsulatingGlass Schedule at the end of Part 3 are nominal and the overall thicknesses of units are
measured perpendicularly from outer surfaces of glass lites at unit's edge.
C.
Sealing System: Dual seal, with primary and secondary sealants as follows:
1.
2.
D.
Spacer Specifications: Manufacturer's standard spacer material and construction.
1.
2.
2.7
A.
Laminated Ceramic Glazing Material: Proprietary Category II safety glazing product in the
form of 2 lites of clear ceramic glazing material laminated together to produce a laminated lite
of 5/16-inch (8-mm) nominal thickness; polished on both surfaces; weighing 4 lb/sq. ft. (19.5
kg/sq. m); and as follows:
2.
3.
Fire-Protection Rating: As indicated for the assembly in which glazing material is
installed, and permanently labeled by a testing and inspecting agency acceptable to
authorities having jurisdiction.
Polished on both surfaces, transparent.
Product: "FireLite Plus" by Nippon Electric Glass Co., Ltd., and distributed by
Technical Glass Products.
Specially Tempered Gel Insulated Glass: Proprietary Category II safety glazing product in the
form of Condition A (uncoated surfaces), Type I (transparent glass, flat), Class 1 (clear),
Kind FT (fully tempered) float glass separated with gel filling, and as follows:
1.
2.
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Corner Construction: Manufacturer's standard corner construction.
Color: Gray.
FIRE-RATED, SAFETY GLAZING PRODUCTS: Provide one of the following:
1.
B.
Manufacturer's standard sealants.
Color: Gray.
Fire-Protection Rating:: As indicated for the assembly in which glazing material is
installed, and permanently labeled by a testing and inspecting agency acceptable to
authorities having jurisdiction.
Product: Subject to compliance with requirements, "SuperLite II-XL" by SAFTI; a
Division of O'Keeffe's Inc.
Glazing
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C.
Laminated Glass with Intumescent Interlayers: Proprietary Category II safety glazing product
in the form of multiple lites of Condition A (uncoated surfaces), Type I (transparent glass, flat),
Class 1 (clear), Kind FT (fully tempered) float glass laminated with intumescent interlayers;
and as follows:
1.
2.
2.8
A.
SANDBLASTED GLASS:
Frosted Tempered Glass Units: Kind FT (fully tempered) and complying with other specified
requirements.
1.
2.
3.
4.
5.
2.9
A.
Product: Subject to compliance with requirements, provide sandblasted and full
tempered glass as manufactured by Oldcastle Glass.
Basis-of-Design Product: The design for sandblasted glass is based on Oldcastle Glass
recommendations. Note: Heat-treated glass, both heat-strengthened and tempered,
should not be sandblasted because it will decrease the strength of the glass. All
sandblasting should be done on annealed glass, prior to any heat-treating.
Sandblasting Process: Abrade sandblasted glass evenly, with small particles of sand
forced through a high-pressure air nozzle according to manufacturer's standard process.
Glass Thickness: 6.0 mm.
Antifingerprint Coating: Protective coating recommended and provided by glass
fabricator.
ELASTOMERIC GLAZING SEALANTS:
General: Provide products of type indicated, complying with the following requirements:
1.
2.
3.
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Fire-Protection Rating: As indicated for the assembly in which glazing material is
installed, and permanently labeled by a testing and inspecting agency acceptable to
authorities having jurisdiction.
Product: Subject to compliance with requirements, "PyroStop" by Pilkington Building
Products North America and distributed by Technical Glass Products.
Compatibility: Select glazing sealants that are compatible with one another and with
other materials they will contact, including glass products, seals of insulating-glass units,
and glazing channel substrates, under conditions of service and application, as
demonstrated by sealant manufacturer based on testing and field experience.
Suitability: Comply with sealant and glass manufacturers' written instructions for
selecting glazing sealants suitable for applications indicated and for conditions existing
at time of installation.
Colors of Exposed Glazing Sealants: As selected by Architect from manufacturer's full
range for this characteristic.
Glazing
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B.
Elastomeric Glazing Sealant Standard: Comply with ASTM C 920 and other requirements
indicated for each liquid-applied, chemically curing sealant in the Glazing Sealant Schedule at
the end of Part 3, including those referencing ASTM C 920 classifications for type, grade,
class, and uses.
1.
C.
Additional Movement Capability: Where additional movement capability is specified in
the Glazing Sealant Schedule, provide products with the capability, when tested for
adhesion and cohesion under maximum cyclic movement per ASTM C 719, to withstand
the specified percentage change in the joint width existing at time of installation and
remain in compliance with other requirements in ASTM C 920 for uses indicated.
Structural Glazing Sealants: For structural-sealant-glazed curtain walls, as recommended by
manufacturer for joint type, and as follows:
1.
Structural Sealant: ASTM C 1184, chemically curing silicone formulation that is
compatible with system components with which it comes in contact, specifically
formulated and tested for use as structural sealant and approved by structural-sealant
manufacturer for use in curtain-wall assembly indicated.
a.
b.
2.10
A.
GLAZING TAPES:
Back-Bedding Mastic Glazing Tape: Preformed, butyl-based elastomeric tape with a solids
content of 100 percent; nonstaining and nonmigrating in contact with nonporous surfaces; with
or without spacer rod as recommended in writing by tape and glass manufacturers for
application indicated; packaged on rolls with a release paper backing; and complying with
ASTM C 1281 and AAMA 800 for products indicated below:
1.
2.11
A.
2.12
Provide sealants for use inside of the weatherproofing system that have a VOC
content of 100 g/L or less when calculated according to 40 CFR 59, Subpart D
(EPA Method 24).
Color: Black.
AAMA 804.3 tape, where indicated.
GLAZING GASKETS:
Lock-Strip Gaskets: Neoprene extrusions in size and shape indicated, fabricated into frames
with molded corner units and zipper lock strips, complying with ASTM C 542, black.
MISCELLANEOUS GLAZING MATERIALS:
A.
General: Provide products of material, size, and shape complying with referenced glazing
standard, requirements of manufacturers of glass and other glazing materials for application
indicated, and with a proven record of compatibility with surfaces contacted in installation.
B.
Cleaners, Primers, and Sealers: Types recommended by sealant or gasket manufacturer.
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C.
Setting Blocks: Elastomeric material with a Shore A durometer hardness of 85, plus or minus
5.
D.
Spacers: Elastomeric blocks or continuous extrusions with a Shore A durometer hardness
required by glass manufacturer to maintain glass lites in place for installation indicated.
E.
Edge Blocks: Elastomeric material of hardness needed to limit glass lateral movement (side
walking).
F.
Unfaced, Flexible Glass-Fiber Board Insulation: ASTM C 612, Type IA; ASTM C 553,
Types I, II, and III; or ASTM C 665, Type I; with maximum flame-spread and smoke-developed
indices of 25 and 50, respectively; and of the following properties:
1.
2.
3.
4.
5.
2.13
Nominal density of not less than 1.5 lb/cu. ft. (24 kg/cu. m) nor more than 1.7 lb/cu. ft.
(26 kg/cu. m), thermal resistivity of 4 deg F x h x sq. ft./Btu x in. at 75 deg F (27.7 K x
m/W at 24 deg C).
Combustion Characteristics: Passes ASTM E 136.
Locations: Spandrel glazed units and where indicated on the Drawings.
Adhesive: Approved by spandrel glass fabricator.
Product: "CertaPro" Commercial Board; Certainteed Corporation or approved
equivalent.
FABRICATION OF GLASS AND OTHER GLAZING PRODUCTS:
A.
Fabricate glass and other glazing products in sizes required to glaze openings indicated for
Project, with edge and face clearances, edge and surface conditions, and bite complying with
written instructions of product manufacturer and referenced glazing standard, to comply with
system performance requirements.
B.
Clean-cut or flat-grind vertical edges of butt-glazed monolithic lites in a manner that produces
square edges with slight kerfs at junctions with indoor and outdoor faces.
C.
Grind smooth and polish exposed glass edges.
PART 3 - EXECUTION
3.1
A.
EXAMINATION:
Examine framing glazing, with Installer present, for compliance with the following:
1.
2.
3.
4.
B.
Proceed with installation only after unsatisfactory conditions have been corrected.
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Manufacturing and installation tolerances, including those for size, squareness, and
offsets at corners.
Presence and functioning of weep system.
Minimum required face or edge clearances.
Effective sealing between joints of glass-framing members.
Glazing
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3.2
A.
3.3
PREPARATION:
Clean glazing channels and other framing members receiving glass immediately before glazing.
Remove coatings not firmly bonded to substrates.
GLAZING, GENERAL:
A.
Comply with combined written instructions of manufacturers of glass, sealants, gaskets, and
other glazing materials, unless more stringent requirements are indicated, including those in
referenced glazing publications.
B.
Glazing channel dimensions, as indicated on Drawings, provide necessary bite on glass,
minimum edge and face clearances, and adequate sealant thicknesses, with reasonable
tolerances. Adjust as required by Project conditions during installation.
C.
Protect glass edges from damage during handling and installation. Remove damaged glass
from Project site and legally dispose of off Project site. Damaged glass is glass with edge
damage or other imperfections that, when installed, could weaken glass and impair
performance and appearance.
D.
Apply primers to joint surfaces where required for adhesion of sealants, as determined by
preconstruction sealant-substrate testing.
E.
Install setting blocks in sill rabbets, sized and located to comply with referenced glazing
publications, unless otherwise required by glass manufacturer. Set blocks in thin course of
compatible sealant suitable for heel bead.
F.
Do not exceed edge pressures stipulated by glass manufacturers for installing glass lites.
G.
Provide spacers for glass lites where the length plus width is larger than 50 inches as follows:
1.
2.
Locate spacers directly opposite each other on both inside and outside faces of glass.
Install correct size and spacing to preserve required face clearances, unless gaskets and
glazing tapes are used that have demonstrated ability to maintain required face
clearances and to comply with system performance requirements.
Provide 1/8-inch minimum bite of spacers on glass and use thickness equal to sealant
width. With glazing tape, use thickness slightly less than final compressed thickness of
tape.
H.
Provide edge blocking where indicated or needed to prevent glass lites from moving sideways
in glazing channel, as recommended in writing by glass manufacturer and according to
requirements in referenced glazing publications.
I.
Set glass lites in each series with uniform pattern, draw, bow, and similar characteristics.
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3.4
TAPE GLAZING:
A.
Position tapes on fixed stops so that, when compressed by glass, their exposed edges are flush
with or protrude slightly above sightline of stops.
B.
Install tapes continuously, but not necessarily in one continuous length. Do not stretch tapes to
make them fit opening.
C.
Where framing joints are vertical, cover these joints by applying tapes to heads and sills first
and then to jambs. Where framing joints are horizontal, cover these joints by applying tapes to
jambs and then to heads and sills.
D.
Place joints in tapes at corners of opening with adjoining lengths butted together, not lapped.
Seal joints in tapes with compatible sealant approved by tape manufacturer.
E.
Do not remove release paper from tape until just before each glazing unit is installed.
F.
Center glass lites in openings on setting blocks and press firmly against tape by inserting dense
compression gaskets formed and installed to lock in place against faces of removable stops.
Start gasket applications at corners and work toward centers of openings.
G.
Apply cap bead of elastomeric sealant over exposed edge of tape.
3.5
GASKET GLAZING (DRY):
A.
Fabricate compression gaskets in lengths recommended by gasket manufacturer to fit openings
exactly, with stretch allowance during installation.
B.
Insert soft compression gasket between glass and frame or fixed stop so it is securely in place
with joints miter cut and bonded together at corners.
C.
Center glass lites in openings on setting blocks and press firmly against soft compression
gasket by inserting dense compression gaskets formed and installed to lock in place against
faces of removable stops. Start gasket applications at corners and work toward centers of
openings. Compress gaskets to produce a weathertight seal without developing bending
stresses in glass. Seal gasket joints with sealant recommended by gasket manufacturer.
D.
Install gaskets so they protrude past face of glazing stops.
3.6
A.
SEALANT GLAZING (WET):
Install continuous spacers, or spacers combined with cylindrical sealant backing, between glass
lites and glazing stops to maintain glass face clearances and to prevent sealant from extruding
into glass channel and blocking weep systems until sealants cure. Secure spacers or spacers
and backings in place and in position to control depth of installed sealant relative to edge
clearance for optimum sealant performance.
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WYOMING SEMINARY
B.
Force sealants into glazing channels to eliminate voids and to ensure complete wetting or bond
of sealant to glass and channel surfaces.
C.
Tool exposed surfaces of sealants to provide a substantial wash away from glass.
3.7
A.
3.8
LOCK-STRIP GASKET GLAZING:
Comply with ASTM C 716 and gasket manufacturer's written instructions. Provide
supplementary wet seal and weep system, unless otherwise indicated.
PROTECTION AND CLEANING:
A.
Protect exterior glass from damage immediately after installation by attaching crossed
streamers to framing held away from glass. Do not apply markers to glass surface. Remove
nonpermanent labels, and clean surfaces.
B.
Protect glass from contact with contaminating substances resulting from construction
operations, including weld splatter. If, despite such protection, contaminating substances do
come into contact with glass, remove them immediately as recommended by glass
manufacturer.
C.
Examine glass surfaces adjacent to or below exterior concrete and other masonry surfaces at
frequent intervals during construction, but not less than once a month, for build-up of dirt,
scum, alkaline deposits, or stains; remove as recommended by glass manufacturer.
D.
Remove and replace glass that is broken, chipped, cracked, abraded, or damaged in any way,
including natural causes, accidents, and vandalism, during construction period.
E.
Wash glass on both exposed surfaces in each area of Project not more than four days before
date scheduled for inspections that establish date of Substantial Completion. Wash glass as
recommended by glass manufacturer.
3.9
A.
MONOLITHIC FLOAT-GLASS SCHEDULE:
Uncoated Clear Float-Glass Units “SG-1": Class 1 (clear) float glass.
1.
B.
Uncoated Clear Float-Glass Units “SG-2": Class 1 (clear) Kind FT (fully tempered) float
glass.
1.
2.
C.
Thickness: 6.0 mm.
Provide safety glazing labeling.
Frosted Clear Float-Glass Units “SG-3": Class 1 (clear) Kind FT (fully tempered) float glass.
1.
2.
3.
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Thickness: 6.0 mm.
Sandblasted finish.
Thickness: 6.0 mm.
Provide safety glazing labeling.
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KIRBY CENTER FOR THE CREATIVE ARTS
WYOMING SEMINARY
3.10
A.
FIRE-PROTECTION-RATED SAFETY GLASS SCHEDULE:
Fire Rated Safety Glass Units “SG-4": Fire-rated glazing with hose-stream test; monolithic
ceramic glazing, laminated ceramic glazing or gel-filled, double glazing units.
1.
2.
3.
3.11
A.
Thickness: As standard with manufacturer.
Provide safety glazing labeling.
Fire Rating: Match U.L fire rating listed in “Door and Hardware Schedule”.
INSULATING-GLASS SCHEDULE:
Insulating Glass Units “IG-1": All new exterior aluminum windows, storefront, aluminum
curtain wall.
1.
2.
3.
4.
Classification of Units: Class CBA.
Air Space Width: Nominal ½ inch measured perpendicularly from surfaces of glass lites
at unit's edge.
Sealing System: Dual seal, primary and secondary sealants: manufacturer's standard
sealants.
Spacer Specifications: Manufacturer's standard metal.
a.
b.
c.
5.
Desiccant: Either molecular sieve or silica gel or blend of both.
Corner Construction: Manufacturer's standard corner construction.
Color of Spacer: Color as selected by Architect from manufacturer's standard
colors.
Glass Specifications: Comply with the following requirements:
a.
b.
c.
d.
e.
Thickness of Each Lite: 6.0 mm.
Indoor Lite: Type I (transparent glass, flat), Class 1 (clear) float glass.
Outdoor Lite: Type I (transparent glass, flat), Class 1 (clear) float glass.
Low-Emissivity Coating: Vacuum deposition sputtered coating on second surface.
Nominal Performance Characteristics are as indicated below:
1)
2)
3)
4)
6.
Product: Solarscreen 2000, "VE1-2M", fabricated by Viracon, or accepted equal from
one of the following manufacturers subject to compliance with requirements.
a.
b.
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Visible Light Transmittance: 70 percent.
Summer Daytime U-Value: .28.
Winter Nighttime U-Value: .29.
Shading Coefficient: .43
SunGuard SuperNeutral 68; Guardian Industries.
Solarban 60; PPG Industries, Inc.
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WYOMING SEMINARY
B.
Insulating Glass Units “IG-2": Aluminum storefront and curtainwall where safety glazing is
required.
1.
2.
3.
4.
Classification of Units: Class CBA.
Air Space Width: Nominal ½ inch measured perpendicularly from surfaces of glass lites
at unit's edge.
Sealing System: Dual seal, primary and secondary sealants: manufacturer's standard
sealants.
Spacer Specifications: Manufacturer's standard metal.
a.
b.
c.
5.
Desiccant: Either molecular sieve or silica gel or blend of both.
Corner Construction: Manufacturer's standard corner construction.
Color of Spacer: Color as selected by Architect from manufacturer's standard
colors.
Glass Specifications: Comply with the following requirements:
a.
b.
Thickness of Each Lite: 6.0 mm.
Indoor Lite: Type I (transparent glass, flat), Class 1 (clear) float glass.
1)
c.
Outdoor Lite: Type I (transparent glass, flat), Class 1 (clear) float glass.
1)
d.
e.
SunGuard SuperNeutral 68; Guardian Industries.
Solarban 60; PPG Industries, Inc.
Coated Spandrel Insulating Glass “IG-3": Where glass of this designation is indicated, provide
insulating-glass units complying with the following:
1.
2.
Construction: Provide units that comply with requirements specified for insulating-glass
units “IG-2"designated except for indoor lite.
Indoor Lite: Ceramic coated spandrel glass.
a.
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Visible Light Transmittance: 70 percent.
Summer Daytime U-Value: .28.
Winter Nighttime U-Value: .29.
Shading Coefficient: .43
Provide safety glazing labeling.
Product: Solarscreen 2000, "VE1-2M", fabricated by Viracon, or accepted equal from
one of the following manufacturers subject to compliance with requirements.
a.
b.
C.
Kind FT (fully tempered).
Low-Emissivity Coating: Vacuum deposition sputtered coating on second surface.
Nominal Performance Characteristics are as indicated below:
1)
2)
3)
4)
6.
7.
Kind FT (fully tempered).
Kind FT (fully tempered).
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WYOMING SEMINARY
b.
c.
3.
3.12
Coating Location: Fourth surface, 100 percent coverage.
Color: White.
Provide safety glazing labeling.
ELASTOMERIC GLAZING SEALANT:
A.
Base Polymer: Neutral-curing silicone.
B.
Type: M (multicomponent).
C.
Grade: NS (nonsag).
D.
Class: 25.
E.
Additional Movement Capability: 25 percent movement in extension and 25 percent in
compression for a total of 50 percent movement.
F.
Use Related to Exposure: NT (nontraffic).
G.
Uses Related to Glazing Substrates: G, A, and, as applicable to glazing substrates indicated, O.
1.
H.
Use O Glazing Substrates: Elastomeric glazing gaskets and glazing accessories.
Acceptable Manufacturers:
1.
2.
3.
4.
Dow Corning Corporation.
General Electric Co., div. of GE Silicones.
Pecora Corporation.
Sonneborn Building Products Division, ChemRex, Inc.
END OF SECTION 088000
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