Carport / Deck / Covered

Carport / Deck / Covered
MASON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT
P.O. Box 279 + 426 W Cedar Street + Shelton, WA 98584
www.co.mason.wa.us
•
•
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Phone (360) 427-9670 ext. 352
Belfair: (360) 275-4467
Elma: (360) 482-6968
Fax: (360)427-7798
Building
Planning
Fire Marshal
PERMIT REQUIREMENTS
A complete, accurate, and detailed sitepfan is important to avoid delays in the review and approval of your project. The
following items will be required for a complete the building permit application package. Additional information may be needed
depending upon individual site conditions.
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The number in the table indicates the number of copies required if applicable .
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Required for submittal of a complete application.
A Pumpers report may be required when a septic system is existing and has been installed for three or more years. The report,
dated within the last three years, shall include the size and condition of both tank and baffles.
Additional information and permits may be required by the Planning Dept. call extension 352 for information.
If applicable, needed when site conditions require additional information.
Engineered plans shall have design information & details transferred onto plans. One copy of the plans and calculations shall be
wet-stamped.
Revised 09.11.2013
SUBMITTAL SPECIFICATIONS AND INFORMATION
Site Plan: Site plans must be drawn to scale and at
least 8 %" x 11 ". Scale not less than 1"=60'. Checklist
indicating information required on the site plan is listed on
the site plan application. Incomplete site plans may cause
a delay in the review and approval of your project
Construction Plans: Plans must be-drawn toscale,preferred 1-4" = 1'. Dimensions must be noted on the
plans. A complete set of plans shall include foundation
plan, framing plans, floor plans, cross sections, and
elevations. A complete building plan will give the building
department enough information on how you plan to
construct your project If you plan to construct a log
home, pole building greater than 864 square feet, or a
metal, masonry, or concrete structure, calculations and
plans, stamped by a Washington State licensed engineer
may be required. The building official may require
additional drawings, details, sections, or stampedengineered calculations and/or details.
Directions to Site: Provide accurate directions to your
project site. This information will be used by staff when
they review the project and by building inspectors
Structural Engineered Calculations: Will be
required if the proposed structure does not meet
conventional construction standards. Include 2 sets of
calculations with your permit application.
Driveway Access Permit: May be required if
accessing a public road or right of way. Contact Mason
County Public Works at (360) 427-9670, ext. 450
Critical Area: Critical areas include shorelines, flood
plains, streams, wetlands, important wildlife habitat areas
and landslide hazard areas (such as steep slopes and
marine bluffs). The planner may need to visit your site to
decide whether a buffer zone is required between the
critical area and the proposed structures. Please mark
_ _ _ the corners of the proposed structure with flags or stakes.
Geotechnical Study: A geotechnical assessment or
report will be required if the development is within 300 ft
of a slope 14% or greater. Additionally if the parcel is
located within a mapped Landslide/Erosion Hazard Area
Wetland: Areas that are inundated or saturated by
surface water or ground water at a frequency and
duration sufficient to support, and that under normal
circumstances do support a prevalence of vegetation
typically adapted for life in saturated soil conditions.
Wetlands generally include swamps, marshes, bogs, and
similar areas.
Buffer: An area of land or designated for the purpose of
insulating or separating a structure or land use from a
critical area or resource land in such a manner as to
reduce or mitigate any adverse impacts of the developed
area.
Parcel Number: a 12-digit tax assessment number
assigned to each parcel by the Assessor's Office.
Existing On-Site Sewage System: Documentation of
approved on-site sewage system and satisfactory
operation and maintaince report within last 3 years,
Legal Description: This describes the parcel of land
identified by the 12-digit tax identification number. It is
acceptable to submit a legal description of the parcel as it
appears on deeds, real estate contracts, and statutory
warranty deed, or in records at the Assessor's office.
Legal descriptions are used to check the dimensions of a
parcel and any underlying restrictions (such as setbacks
from property lines or easements, lot coverage, or height
of buildings).
Septic Approval or Sewer Permit: Septic design
Address: Site addresses are assigned through the
Washington State Energy Code: WSEC Energy
envelope calculations and air quality compliance.
application must be approved by the Mason County
Public Health prior to permit issuance for all development
with septic systems. If sewer is available, sewer permits
can be obtained by calling Mason County Utilities.
Water Availability: The water system manager must
complete a Water Adequacy application if the project will
be connected to a public/community water system.
Private wells systems require a water well report, or
capacity test, and bacteriological test within last 12
months.
RLC/Pre-lnspection: Pre- site inspection may be
necessary for application. A site visit completed by a
planner to identify critical areas and setback on the site.
Aquifer Recharge Areas: Areas where water
infiltrates the soil, and percolates through it and surface
rocks, to the groundwater table. These areas are mapped
with Mason County Community Development
Mason County Department of Community Development;
call (360) 427-9670 ext. 352 for more information.
Contractor Registration Number: Contractors must
be licensed with the state. The contractor license number
can be obtained from the general contractor that will be
performing the work or through the Labor & Industries
website at https://wws2.wa.gov/lni/bbip/contractor.asp
an owner can be an owner-contractor when building on
his or her own property.
SEPA: The State Environmental Policy Act, 43.21c RCW
and implementing State and County administrative rules
PERMIT NO.___________
MASON COUNTY
DEPARTMENT OF COMMUNITY DEVELOPMENT
BUILDING  PLANNING  FIRE MARSHAL
WWW.CO.MASON.WA.US
Mason County Bldg. III, 426 West Cedar Street
PO Box 279, Shelton, WA 98584
(360) 427-9670 Shelton ext.352
(360) 275-4467 Belfair ext. 352
(360) 482-5269 Elma ext. 352
BUILDING PERMIT APPLICATION
OWNER INFORMATION:
CONTRACTOR INFORMATION:
NAME:_______________________________________
MAILING ADDRESS:__________________________
CITY:______________ STATE:_______ ZIP:________
PHONE:_______________ CELL:_________________
EMAIL:_______________________________________
NAME:_________________________________________
MAILING ADDRESS:_____________________________
CITY:____________ STATE:_________ ZIP:_________
PHONE:________________ CELL: _________________
EMAIL :________________________________________
L&I REG #_____________________ EXP. ___/___/___
PARCEL INFORMATION:
PARCEL NUMBER (12 DIGIT NUMBER) ___________________________________________ FIRE DISTRICT___________
LEGAL DESCRIPTION(ABBREVIATED) :______________________________________________________________________
SITE ADDRESS_______________________________________________________CITY________________________________
DIRECTIONS TO SITE ADDRESS ____________________________________________________________________________
__________________________________________________________________________________________________________
IS PROPERTY WITHIN 200 FT:
SALTWATER ⎕ LAKE ⎕ RIVER/CREEK ⎕ POND ⎕ WETLAND ⎕ SEASONAL RUNOFF ⎕ STREAM ⎕
DOES PROPERTY HAVE SLOPE(S) WITHIN 300 FT OF THE PROJECT- GREATER THAN 14% YES⎕ NO ⎕
TYPE OF JOB:
NEW ⎕
ADDITION ⎕
ALTERATION ⎕
REPAIR ⎕
OTHER ⎕
USE OF STRUCTURE (RESIDENCE, GARAGE ETC.)_________________________________________________________________
IS USE: PRIMARY ⎕ SEASONAL ⎕
NUMBER OF BEDROOMS_________ NUMBER OF BATHROOMS_______
DESCRIBE WORK__________________________________________________________________________________________
SQUARE FOOTAGE:
1ST FLOOR________ sq. ft. 2ND FLOOR________ sq. ft. 3RD FLOOR________ sq. ft. BASEMENT________ sq. ft.
DECK________ sq. ft. COVERED DECK________ sq. ft. STORAGE__________ sq. ft.
OTHER________ sq. ft.
GARAGE________ sq. ft. ATTACHED ⎕ DETACHED ⎕ CARPORT__________ sq. ft. ATTACHED ⎕ DETACHED ⎕
MANUFACTURED HOME INFORMATION:
*4
COPIES OF THE FLOOR PLAN
MAKE___________________________ MODEL_______________________ YEAR______________ LENGTH_____________
WIDTH___________ BEDROOMS____________ BATHS______________ SERIAL NUMBER________________________
OWNER / BUILDER acknowledges submission of inaccurate information may result in a stop work order or permit revocation.
Acknowledgement of such is by signature below. I declare that I am the owner, owners legal representative, or contractor. I further
declare that I am entitled to receive this permit and to do the work as proposed. I have obtained permission from all the necessary
parties, including any easement holder or parties of interest regarding this project. The owner or authorized agent represents that the
information provided is accurate and grants employees of Mason County access to the above described property and structure(s) for
review and inspection. This permit/application becomes null & void if work or authorized construction is not commenced within 180
days or if construction work is suspended for a period of 180 days. PROOF OF CONTINUATION OF WORK IS BY MEANS OF
INSPECTION. INACTIVITY OF THIS PERMIT APPLICATION OF 180 DAYS WILL INVALIDATE THE APPLICATION.
_______________________________
X__________________________________________
Signature of Applicant
Date
X__________________________________________
OWNER / REPRESENTATIVE /CONTRACTOR
Print Name
(CIRCLE TO INDICATE)
DEPARTMENTAL REVIEW
BUILDING DEPARTMENT
PLANNING DEPARTMENT
FIRE MARSHAL
APPROVED
DATE
DENIED
DATE
TAGS/NOTES/CONDITIONS
FEE'S
BUILDING PERMIT FEE
PLAN REVIEW
PLUMBING & BASE FEE
MECHANICAL & BASE FEE
WOOD/GAS/PELLET STOVE
PLANNING REVIEW FEE
TOTAL VALUATION:
FIRE ACCESS AND GRADE
GEO- TECH REVIEW
STORMWATER REVIEW
TOTAL FEES
VIOLATION INVESTIGATION FEE
VIOLATION FEE
SITE PLAN CHECKLIST
A COMPLETE, ACCURATE AND DETAILED SITE PLAN IS IMPORTANT TO AVOID
DELAYS IN THE REVIEW AND APPROVAL OF YOUR PROJECT. USE THE
CHECKLIST BELOW AS A TOOL TO HELP YOU COMPLETE THE SITE PLAN.
Scale: A scale of 1”=20’, is typical but other scales such as
1”=10’ or 1”-40’ are also acceptable. Do not exceed 1”=60
North arrow
Property line location and dimensions.
Label abutting streets
Shoreline/Surface water: Indicate creeks, streams, lakes,
ponds, wetlands and other bodies of water within 300 ft of
the proposed project
Wetlands and Seasonal Drainage: Show setback distances
from wetlands or seasonal drainage.
Easements: Indicate location and size of road, utility, and
private easements.
Show All Existing Development: Identify existing and
proposed structures. Include porches, decks, roof
overhangs, cantilevers, and structures that will be
demolished.
Proposed Building Footprint: Use scale to show distances to
property lines, existing structures, septic tank and drainfield.
Stake or flag footprint of proposed structure.
Sewage Disposal System: Identify septic tank location and
drainfield.
Existing/proposed Buffers: Include open space, fences,
sidewalks and parking areas.
Retaining walls: Proposed and existing.
Slopes/Site contours (Topography): Identify any slopes
greater than 15%, fills or cuts greater than 4ft. that are
located within 300 ft of the proposed project. Use Contour
lines or arrows to show the direction of the slope
Wells: Show existing/ proposed.
Waterfront projects: Show all structures on adjacent
property.
Driveway/ Site Access
Stormwater Run-off Path: Identify stormwater path and
direction of flow.
TOPOGRAPHY PROFILE:
Building Permit number: _________________________
Owner/Applicant: _______________________________
Parcel Number: ________________________________
Direction:
Scale:
Date of
application:
Approval: for office use
Building: __________
Planning: __________
Env. Health: _______
SUBMITTAL SPECIFICATIONS AND INFORMATION
Site Plan: Site plans must be drawn to scale and at
least 8 ½” x 11”. Scale not less than 1”=60’. Checklist
indicating information required on the site plan is listed
on the site plan application. Incomplete site plans may
cause a delay in the review and approval of your project.
Construction Plans: Plans must be drawn to scale,
preferred ¼” = 1’. Dimensions must be noted on the
plans. A complete set of plans shall include foundation
plan, framing plans, floor plans, cross sections, and
elevations. A complete building plan will give the
building department enough information on how you plan
to construct your project. If you plan to construct a log
home, pole building greater than 864 square feet, or a
metal, masonry, or concrete structure, calculations and
plans, stamped by a Washington State licensed
engineer may be required. The building official may
require additional drawings, details, sections, or
stamped-engineered calculations and/or details.
Directions to Site: Provide accurate directions to your
project site. This information will be used by staff when
they review the project and by building inspectors
Structural Engineered Calculations: Will be
required if the proposed structure does not meet
conventional construction standards. Include 2 sets of
calculations with your permit application.
Driveway Access Permit: May be required if
accessing a public road or right of way. Contact Mason
County Public Works at (360) 427-9670, ext. 450
Washington State Energy Code: WSEC Energy
envelope calculations and air quality compliance.
Existing On-Site Sewage System: Documentation
of approved on-site sewage system and satisfactory
operation and maintaince report within last 3 years.
Septic Approval or Sewer Permit: Septic design
application must be approved by the Mason County
Public Health prior to permit issuance for all
development with septic systems. If sewer is available,
sewer permits can be obtained by calling Mason County
Utilities.
Critical Area: Critical areas include shorelines, flood
plains, streams, wetlands, important wildlife habitat
areas and landslide hazard areas (such as steep slopes
and marine bluffs). The planner may need to visit your
site to decide whether a buffer zone is required between
the critical area and the proposed structures. Please
mark the corners of the proposed structure with flags or
stakes.
Geotechnical Study: A geotechnical assessment or
report will be required if the development is within 300 ft
of a slope 14% or greater. Additionally if the parcel is
located within a mapped Landslide/Erosion Hazard Area
Wetland: Areas that are inundated or saturated by
surface water or ground water at a frequency and
duration sufficient to support, and that under normal
circumstances do support a prevalence of vegetation
typically adapted for life in saturated soil conditions.
Wetlands generally include swamps, marshes, bogs,
and similar areas.
Buffer: An area of land or designated for the purpose of
insulating or separating a structure or land use from a
critical area or resource land in such a manner as to
reduce or mitigate any adverse impacts of the developed
area.
Parcel Number: a 12-digit tax assessment number
assigned to each parcel by the Assessor’s Office.
Legal Description: This describes the parcel of land
identified by the 12-digit tax identification number. It is
acceptable to submit a legal description of the parcel as
it appears on deeds, real estate contracts, and statutory
warranty deed, or in records at the Assessor’s office.
Legal descriptions are used to check the dimensions of a
parcel and any underlying restrictions (such as setbacks
from property lines or easements, lot coverage, or height
of buildings).
Address: Site addresses are assigned through the
Mason County Department of Community Development;
call (360) 427-9670 ext. 352 for more information.
Contractor Registration Number: Contractors must
complete a Water Adequacy application if the project will
be connected to a public/community water system.
Private wells systems require a water well report, or
capacity test, and bacteriological test within last 12
months.
be licensed with the state. The contractor license
number can be obtained from the general contractor that
will be performing the work or through the Labor &
Industries website at:
https://wws2.wa.gov/lni/bbip/contractor.asp an owner can
be an owner-contractor when building on his or her own
property.
RLC/Pre-Inspection: Pre- site inspection may be
necessary for application. A site visit completed by a
planner to identify critical areas and setback on the site.
SEPA: The State Environmental Policy Act, 43.21c
RCW and implementing State and County administrative
rules.
Water Availability: The water system manager must
Aquifer Recharge Areas: Areas where water
infiltrates the soil, and percolates through it and surface
rocks, to the groundwater table. These areas are
mapped with Mason County Community Development.
Name_______________________
Parcel # ____________________________
BLD#___________________________
Mason County
Department of Community Development
Small Parcel Stormwater Management Application/Worksheet (page 1 of 2)
Per Mason County Code, Title 14, Chapter 14.48 a stormwater site plan is required whenever a building application is
made for residential development, or redevelopment¹, with more than 2,000 square feet of impervious surface².
¹Redevelopment means, on an already developed site, the creation or addition of impervious surfaces, structural development
including construction, installation or expansion of a building or other structure, and/or replacement of impervious surface that is not
part of a routine maintenance activity, and land disturbing activities associated with structural or impervious redevelopment.
²Common impervious surfaces include, but are not limited to, rooftops, walkways, patios, driveways, parking lots or storage areas,
concrete or asphalt paving, gravel roads, packed earthen materials, and oiled, macadam or other surfaces which similarly impede the
natural infiltration of stormwater. Open, uncovered retention/detention facilities shall not be considered as impervious surfaces.
To Calculate Impervious Surfaces Please Complete This Table
Surface Type
Buildings
Driveways
Parking Areas
Patios/Walks
Others
Length
X
X
Width
=
=
X
=
X
=
X
=
X
=
X
=
X
=
X
=
X
=
X
=
X
=
X
=
X
=
X
=
X
=
X
=
Area
* All dimensions in feet
Measurements for buildings are taken at the
perimeter of the farthest projections (example:
eaves/gutters)
Length of drive begins at the right of way
Any paved, gravel or packed area per definition
above table
Any paved, gravel or packed area per definition
above table
If the total impervious area of the proposed site
development is greater than 2000 square feet a
Small Parcel Stormwater Site Plan is Required
Total Impervious Surface Area (sum of all areas)
If the Total Impervious Surface Area is LESS THAN 2000 Square Feet, please read, acknowledge and sign below.
Based Upon the information you have provided a Stormwater Site Plan IS NOT required for this development activity.
Owner/Builder/Agent Acknowledges that submission of inaccurate information may result in a stop work order or permit revocation.
Acknowledgement of such is by signature below. I declare that I am the owner, owner's legal representative, or the contractor. I
further acknowledge that the information provided is accurate and employees of Mason County are granted access to the abovedescribed property for review and inspection as may be required.
X___________________________________________ Owner/Agent/Contractor (circle one) Date:_______________________
If the Total Impervious Surface Area is GREATER THAN 2000 Square Feet, please read, acknowledge and sign
the information provided on page 2 of 2.
Page 1 of 2
Name_______________________
Parcel # ____________________________
BLD#___________________________
Mason County
Department of Community Development
Small Parcel Stormwater Management Application/Worksheet (page 2 of 2)
Based Upon the information you have provided a Stormwater Site Plan IS Required for this development activity.
Title 14, Chapter 14.48 of the Mason County Code (MCC) regulates compliance requirements for Stormwater
Management in this jurisdiction. A complete copy of the ordinance can be found on the Mason County website:
http//www.co.mason.wa~us/code/commissioners/index.htm
Please follow the links to "Title 14, Chapter 14.48 Stormwater Management".
Regulated activities shall be conducted only after Mason County Public Works approves a stormwater site plan
(Mason County Code Title 14 Chapter 14.48 section 14.48.70). You will receive a copy of the Public Works document
entitled "Managing Storm Drainage on Small Lots, The Small Parcel Stormwater Site Plan". This document will assist
you in preparing the necessary information and plans for Public Works to review and approve. Per Department of
Public Works this document will constitute an approved plan if all of the relevant details* are to be installed in
their entirety AND no part of the stormwater system adversely affects any septic system (see Environmental Health
information below). If an alternative system is to be used a plan will need to be submitted to Public Works for approval.
A design by a registered professional may be required for more complex sites.
*These details are found in the document Managing Storm Drainage on Small Lots, The Small Parcel Stormwater Site Plan
on the pages that begin with “Handout”
PLEASE INITIAL BELOW TO INDICATE THE STORMWATER MANAGEMENT PLAN FOR THIS SITE
A) _____ The relevant details from Managing Storm Drainage on Small Lots, The Small Parcel Stormwater Site Plan will be installed
in their entirety AND the system will be located as not to adversely affect any septic systems on this, or any other, parcel.
B) _____ An alternative plan and/or professional design will be submitted to the Department of Public Works for approval AND the
system will be located as not to adversely affect any septic systems on this, or any other, parcel.
If you have further questions pertaining to parcel drainage and stormwater management Mason County's Public Works
Department can provide additional instructions, guidance and examples. (Section 14.48.130) contact Public works at:
Phone: (360)-427-9670 EXT. 450
Mail: P 0 Box 1850, Shelton WA 98584
Physical: 415 N 6th St, Shelton WA 98584
If this development has, or will have, a septic/drainfield system you may need to contact Mason County Division of
Environmental Health to ensure that the stormwater system will not adversely affect the septic system of this, or
any other, parcel. You may also wish to consult with the septic design professional involved with the project. Mason
County Division of Environmental Health can be reached at:
Phone: (360)-427-9670 EXT. 352
Mail: P 0 Box 1666, Shelton WA 98584
Physical: 426 W Cedar St, Shelton WA 98584
A condition will be added to the building permit that states, in part, that all conditions the stormwater site plan will be met
prior to a request for final inspection of the building permit.
Owner/Builder/Agent Acknowledges that submission of inaccurate information may result in a stop work order or permit revocation.
Acknowledgement of such is by signature below. I declare that I am the owner, owner's legal representative, or the contractor. I
further acknowledge that the information provided is accurate and employees of Mason County are granted access to the abovedescribed property for review and inspection as may be required.
X________________________________________________ Owner/Agent/Contractor (circle one) Date:_______________________
Page 2 of 2
COMMUNITY DEVELOPMENT ENVIRONMENTAL HEALTH REVIEW
Official use only
Mason County Public Health
415 N. 6th Street
PO Box 1666
Shelton, WA 98584
Shelton: (360) 427-9670, Ext. 400
Belfair: (360) 275-4467 Ext. 400
Elma: (360) 482-5269 Ext. 400
Fax (360) 427-7787
Permit Number:
___________________
Date Received:
___________________
Amount Received
___________________
Receipt Number
___________________
Applicant Information
Type of Review
Applicant__________________________ Date_______
Mailing Address________________________________
_____________________________________________
 Building Permit
City
State

E-Mail Address_________________________________
 Replacement
 Commercial Building Permit

Zip
Daytime Phone_________ Other Phone _____________
New
New
 Replacement
 Building/Commercial Permit Revision
 Tenant Review
 Pre-Application
Parcel Information
12-Digit Parcel Number _________________________________________________
Site Address __________________________________________________________
Street Number
Street Name
City
Type of Job
Please submit a scaled plot plan
Describe work ___________________________________ showing all existing and proposed
building, on-site sewage system,
Number of Bedrooms ___________
and well.
On-Site Sewage Information
 On-Site Septic System
 Sewer
Water System Information
 New
 Existing
Plumbing in structure?
Name of Sewer System _________________
Using an existing on-site septic system will require a current
maintenance report and a Record Drawing (Asbuilt). Documents
for both of these requirements may be on file with Mason
County Public Health. Other requirements may apply.
 Yes  No
If yes:
Please submit a completed Water
Adequacy Form.
Applicant Signature
_________________________________________________________ Date _______________
Official use only
Departmental Review
Approved
Denied
Notes
Water Adequacy
On-site Sewage System
Tenant Review
Revision
Revised 12/17/09
MASON COUNTY
CARPORT/COVERED DECK DETAIL
ROOF ASSEMBLY
per IRC/IBC requirements
SNOW LOADS >25# REQUIRE ALTERNATE RAFTER
AND BEAM SIZING APPROPRIATE FOR LOADING.
Construction is limited to the
specifications of
This diagram including maximum
10’ post height maximum 10’ beam
span (post spacing).
Mason County Building Department
Residential Deck, Stair, Landing and Guard Detail
Guard install ed on all decks over 30" above arade.
Spaced so a 4" sphere
cannot pass th rough.
The greatest riser and the greatest stair
tread shall not exceed the
smallest by more than 3/8 ."
Vertical Pickets at handrail
Graspable handrail on
all stairways w ith 4 or
more risers.
Not less than 34" and
not more than 38"
vertically from nose of
tread or walking surface.
'!
Minimum
Guard Height
36"
.,.;
Handrail ends shall
be returned or shall
terminate in newell
posts or safety
terminals.
•:
-------< Ledger at wall:
Indic ate joist size/ soacina
Stair nosing not less than
3/4" but not more than
1-1 /4" on all solid risers
un less tread depth is at
least 11 ."
Indic ate beam
size/spacing . Provide
positive connection post
Indic ate post size , spacing
and base connector.
Triang ular cpen ing formed by
riser/tread/guard are permitted to be cpen so th at a 6"
sphere c annot pass through.
Provide 4" wood/earth clearanc e here ,
6" all oth er areas.
4"x4"x16" masonry
block with asphalt
sh im.
12"
min
Decks installed against manufactu red
homes must have beam support at th is
location.
Concrete footing 12" below grade wh en deck is greater
than 30"above grade. See foundation info on reverse side .
Typical Door with 3 Risers
Land ings are required on
each side of each
exterior door.
Exception: A landing
is not required with
two or fewer risers.
-
Decks shall be
positively anchored
for lateral & vertical
loads. See Mason
County deck ledger
attachment detail.
Decks shall be self
supporting if
connections cannot
be verified during
inspection. R502.2
Landings shall not be
more than 1-112"
lower Than the top ol
the threshdd.
Exception:
The landing shall
····- ____ fill_! beJTI_QrE:!_than 7-314" lower
than the threshold provided the
door does not swing over the landing.
CONSlRUCllON
MAlERIALS
Decay resistant woods
heartwood of redwood, cedar,
black locust and pressure
preservatively treated wood
are all acceptable material for
use in deck construction. Field
applied treatment is not an
acceptable method_ Fasteners
for pressure preservative
treated woods shall be of hotdipped galvanized steel,
stainless steel, silicon bronze
or copper. Field cut ends,
notches and driled holes of
pressure preservatively treated
wood shall be retreated in the
field in accordance with AWPA
M4.
IRC R319 & R320.
Illum inate stairs
w~h cont rols
located at top and
bottom of stairs.
"'
I\
Graspable Rail
34 "min 38"max
36" min
landing
36" min
landing
Handrail Details
All stairways with 4 or more risers shall
have at least one handrail. Such handrails
shall be placed not less than 34" nor more .
than 38" above the nose of the treads and
shall be continuous for the full length pf the
flight. Handrail ends shall be returned or
terminate in the newel post or safety terminals. Handrails adjacent to the wall shall
have a space not less than 1 %" between
the wall and the handrail. Circular handrails shall have an outside diameter of at
least 1 %" and not more than 2." Handrails
with a perimeter greater than 6 %" shall
provide a graspable finger recess on both
sides. Handrails shall not project more
than 4 %" on either side of the stairway.
FOUNDATION SUPPORT SYSTEMS
•
•
•
Decks 30" or less above grade: Minimum 12"x12" manufactured pier.
Deck 30" to 5'0" above grade: Minimum 14"x14" manufactured pier set 12" below grade.
Decks greater than 5'0" above grade: Minimum 18"x18"x18" poured in place footing set 12" below grade.
All deck posts shall have a positive post to footing and positive post to beam connection.
Deck height is measured at the lowest point within 5'0" beyond the walking surface of the deck.
DE C K
PLAN
EXAMPLE ONLY
APPROVED JOIST HANGERS
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FOR MFG. HOME
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SPACING
MASON COUNTY
DEPARTMENT OF COMMUNITY DEVELOPMENT
Mason County Bldg. III, 426 West Cedar Street
PO Box 279, Shelton, WA 98584
www.co.mason.wa.us
(360) 427-9670
Belfair (360)275-4467
Elma (360)482-5269
Deck Ledger Attachment Details & Specifications
Please see Mason County Checklist item #56 and #69
for additional wood and fastener requirements
Fastener spacing for solid sawn deck ledger to an existing band (rim) joist.
(Deck Live Load = 40 psf & Dead Load = 10 psf) •
•
•
•
•
•
Lag screw tips shall extend beyond the inside face of the band/rim joist
Maximum gap between band/rim joist and ledger shall be ½” with spacer(s)
Flashing shall be installed to prevent water intrusion at structural attachment
Deck Ledger shall be minimum 2x8 pressure preservative treated No. 2 grade lumber
Lag screws and bolts shall be staggered per diagram below
Please see typical diagrams on reverse for construction details.
Typical Construction Details
Deck Ledger shall be 2x pressure preservative treated No. 2 grade lumber (2 x 8 minimum)
Ledger shall be equal to (or greater than) joist sizes larger than 2 x 8 nominal
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