HomeMy WebLinkAboutBLD2023-00390 Expired SFR - BLD Inspections - 4/20/2026 MASON COUNTY 615 W.Alder St.Bldg 8,SHELTON,WA 98584
COMMUNITY SERVICES SHELTON:360-427-9670,EXT 352
BELFAIR:360-275-4467,EXT 352
Budding,Planning,Env'ronmental Heath Communily 1lealth ELMA:360-482-5269,EXT 352
www.co.mason.wa.us
INSPECTION CARD AND CERTIFICATE OF OCCUPANCY**
To schedule an inspection call or visit http://www.co.mason.wa.us/community-services/bld-inspection.php
Permit Number BLD2023-00390 Date Issued 08/16/2023 Issued By {11
Project NEW SFR
Site Address 860 NE TAHUYA RIVER RD
Applicant HOSS WARREN&MARTHA
Contractor
Contractor Phone
Primary Code 2018 IBC,IRC,IFC,IEC,IMC,& Type
Permit Type NEW SINGLE FAMILY RESIDENCE Occupancy
-APPROVED PLANS MUST BE ONSITE FOR ALL INSPECTIONS.
-DO NOT PROCEED BEYOND EACH STAGE OR COVER WORK UNTIL APPROVAL IS GRANTED.
-THIS CARD MUST BE POSTED IN A CONSPICUOUS LOCATION,FRONT OF THE PREMISES IS BEST FOR MAKING ENTRY.
-ALL PERMITS EXPIRE 180 DAYS AFTER THE PERMIT IS ISSUED OR 180 DAYS AFTER DATE OF LAST INSPECTION.
-OWNER/AGENT IS RESPONSIBLE FOR REQUESTING ALL INSPECTIONS THROUGH FINAL INSPECTION.
**THIS STRUCTURE MAY NOT BE USED OR OCCUPIED UNTIL ALL APPROVALS ARE GRANTED.**
PRIOR TO CALLING FOR FINAL INSPECTION,ALL CONDITIONS OF THE PERMIT MUST BE MET
Public Works Access/Driveway Other
Health Septic Well
Deptartment
Planning Site Inspection
Department
Fire Marshall Fire Apparatus Access Fire Sprinkler
Auto Fire Alarm Hood and Duct
Other Final
Building Building Official: Community Services Designee
Department
Concrete Setbacks 01- ..73 p Slab
Footing Perimeter Point load Footing
Footing Interior Footing Decks/Porches
Foundation Stem Walls V Other
Rough-In Groundwork Plumbing Framing -3o-2S pe0
Groundwork Mechanical Plumbing L4/tfZ LE
Groundwork Gas Pipe Mechanical -1S De0
Gas Piping -Q.25 ! Shear Wall Nailing
Underfloor . ,
Other
Insulation Slab Ceiling
Floor Vaulted Ceiling
Walls $-(2- Vapor Barrier
Other
Wallboard Interior Wall Brace Panels Fire Walls
Nailing
Other
Final Building
Manufactured Setbacks Setup
Home
Concrete Foot/Runners Final
Other
MASON COUNTY INSPECTION RESULTS Pagel
Department of Community Development
COMMUNITY DEVELOPMENT 615 W Alder St, Shelton, WA 98584
Permit Assistance Center,Building,Planning (360)427-9670 ext. 352
Application# BLD2023-00390 Application Type NEW SINGLE FAMILY Owner HOSS WARREN & MARTHA
RESIDENCE
Parcel # 322127600050 Site Address 860 NE TAHUYA RIVER RD TAHUYA, WA
98588
Inspector Inspection Type Date Status Comments
4/11/25 SCS
"L Per detail 27/SD-1 Simpson A-35's @ 16" OC need to be installed above top plate
to rim board supporting exterior roof.
IQ, Fire caulking is to be installed at all top and bottom plate penetrations.
Exterior wall penetrations are to be sealed.
Hold Downs nuts need to be tightened. "X" marked on stud near hold downs.
Caulk and seal of exterior bottom plate not completed.
Install CS-16 Strap on top plate in downstairs bathroom.
Stephen Scott FRAMING INSPECTION 04/11/2025 FAIL 7. Install gas piping and have system under test for reinspection.
Install gas Fireplace and vent to outside.
\Install exhaust duct for bathroom fan in downstairs bathroom.
Install cooking stove exhaust vent.
11. DTT2Z for deck railing needs to be installed.
(Note: Homeowner explained DTT2Z will not be installed until Deck Railing is
installed. He will provide pictures or building inspector can verify install at later
inspection.)
Please call for reinspection once the corrections have been made.
0 Mason County
Mason County - Division of Community Development
615 W. Alder St.
Building 8
Shelton, WA 98584
360-427-9670 ext 352
www.masoncountywa.gov
B DD2023-00390 NEW SINGLE FAMILY RESIDENCE
PROJECT DESCRIPTION: NEW SFR ISSUED: 08/16/2023
SITE ADDRESS: 860 NE TAHUYA RIVER RD TAHUYA
EXPIRES: 02/12/2024
PARCEL: 322127600050
APPLICANT: HOSS WARREN&MARTHA OWNER: HOSS WARREN &MARTHA
35433 26TH AVE S 35433 26TH AVE S
FEDERAL WAY,WA 98003 FEDERAL WAY,WA 98003
206-979-4604
VALUATIONS: FEES: Paid Due
R-3 VB Residential, one- 1700.00 $282,336.00 Building Permit Fee $2,251.20 $0.00
and two-family Technology Surcharge $75.39 $0.00
Covered Deck/Carport 293.00 $6,446.00 Plumbing Fees $140.00 $0.00
State Fee-Residential $6.50 $0.00
Plumbing Base Fee $25.00 $0.00
Building Plan Review/Change of $130.00 $0.00
Use-Onsite Sewage
Planning Review Fee $240.00 $0.00
Mechanical Base Fee $30.00 $0.00
Plan Check Fee $1,463.28 $0.00
Mechanical Fees $269.00 $0.00
Plan Check Fee ($1,463.28) $0.00
Building Plan Review/Change of ($130.00) $0.00
Use- Onsite Sewage
Planning Review Fee ($240.00) $0.00
Planning Review Fee $240.00 $0.00
Plan Check Fee $1,463.28 $0.00
Building Plan Review/Change of $130.00 $0.00
Use- Onsite Sewage
NSF-CHECK FEE $40.00 $0.00
Total: $288,782.00 Totals : $4,670.37 $0.00
Printed by:Annie Wilson on:08/16/2023 10:04 AM
Page 1 of 8
0 Mason County
Mason County - Division of Community Development
615 W. Alder St.
Building 8
Shelton, WA 98584
360-427-9670 ext 352
www.masoncountywa.gov
NEW SINGLE FAMILY RESIDENCE BLD2023-00390
FIXTURES
(qty Mechanical Fixtures (qty Plumbing Fixtures
1.0000 Gas Outlet(s) (1-5) 1.0000 Number of Clothes Washers
1.0000 Dryer Vent(s) 1.0000 Number of Dishwashers
1.0000 Kitchen Exhaust Hood(s) 1.0000 Number of Showers
1.0000 Furnace(s) 1.0000 Number of Water Heaters and or Vent
1.0000 Heat Pump(s) 2.0000 Number of Hose Bibs
1.0000 Propane Tank(s) 2.0000 Number of Bath Tubs
1.0000 Wood/Gas/Pellet Stove(s) 2.0000 Number of Kitchen Sinks
4.0000 Spot Vent Fan(s) 3.0000 Bathroom Sink
3.0000 Number of Toilets
REQUIRED INSPECTIONS
Setback Inspection Rough- Plumbing Inspection
Footing Inspection Mechanical Inspection
Foundation Wall-Pre-Pour Inspection Gas Piping Inspection
Underfloor Inspection Insulation Inspection
Shearwall Inspection Connection has been verified by Health or Utilities
Framing Inspection BLD-Final Inspection
CONDITIONS
All RED stamped approved plans are required to be on-site for inspection purposes. If an inspection is called for and
plans are not available on site, then approval will not be granted. In addition, a re-inspection fee (refer to current fee
schedule, minimum 1 hour)will be charged and must be collected by the Building Department prior to any further inspections
being performed or approvals granted.
Printed by:Annie Wilson on:08/16/2023 10:04 AM
Page 2 of 8
0 Mason County
Mason County - Division of Community Development
615 W. Alder St.
Building 8
Shelton, WA 98584
360-427-9670 ext 352
www.masoncountywa.gov
NEW SINGLE FAMILY RESIDENCE BLD2023-00390
* A Mason County Stormwater Management Worksheet was completed and signed as part of this building permit
application. Design, sizing, placement, inspection and maintenance of stormwater management systems shall be the
responsibility of the owner/agent of the developed parcel. It is the owner/agent/contractor's responsibility to ensure that
Mason County Department of Public Works has approved the stormwater site plan for this parcel prior to the commencement
of any development activities. *NOTE if Stormwater Management option "A"was selected on the Small Parcel Stormwater
Management Application/Worksheet the document entitled "Managing Storm Drainage on Small Lots, The Small Parcel
Stormwater Site Plan" constitutes an approved plan based on the criteria listed on the application/worksheet. If the
development has, or will have, a septic/drainfield system you are responsible for contacting 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. By calling for a final
inspection of the building permit the owner/agent/contractor is acknowledging that all components of the stormwater
management system have been installed as approved on the stormwater site plan. Under the requirements of Mason County
Stormwater Ordinance, either private ditches and drains will meet requirements of the stormwater ordinance or prior
approval will be granted to use an existing utility and drainage easement dedicated for that specific purpose.
* All changes to"approved" building plans that effect compliance with the international codes as amended and adopted, or
any other Mason County ordinance or regulation, must be reviewed and approved by Mason County prior to construction.
* The use, handling and storage of hazardous materials or flammable and combustible liquids in excess of 10 gallons is not
allowed without the approval of the Mason County Fire Marshal.
* Approved per dimensions and setbacks on submitted site plan. Setbacks are measured from the furthest projection of the
structure.
* All surface water and potential runoff must be controlled on site and shall not adversely affect any adjacent properties nor
increase the velocity flow entering or abutting to any state or county culverting/ditching system or road way.
Printed by:Annie Wilson on:08/16/2023 10:04 AM
Page 3 of 8
0 Mason County
Mason County - Division of Community Development
615 W. Alder St.
Building 8
Shelton, WA 98584
360-427-9670 ext 352
www.masoncountywa.gov
NEW SINGLE FAMILY RESIDENCE BLD2023-00390
* Adopted Washington State Energy Code Compliance has been approved as follows:
Heat Type: Electric or other than electric, Compliance Method: Prescriptive option Marine-4C, Window(Max U-
Factor):0.30, Skylight(Max U-Factor):0.50, Doors (Type/Max U-Factor):0.30 or less, Wall insulation R-21, Floor insulation
R-30, Ceiling Insulation min. R-49, Vault Insulation R-38, and Slab Insulation R-10.
2 Heat pump
1.3 Prescriptive compliance is based on Table R402.1.1 with the following modifications:
Vertical fenestration U = 0.28, Floor R-38, Slab on grade R-10 perimeter and under entire slab below grade slab R-10
perimeter and under entire slab or Compliance based on Section R402.1.4: Reduce the Total conductive UA by 5%
2.2 Compliance based on Section R402.4.1.2: Reduce the tested air leakage to 2.0 air changes per hour maximum at 50
Pascals or for R-2 Occupancies, optional compliance based on Section R402.4.1.2: Reduce the tested air leakage to 0.25
cfm/sf maximum at 50 Pascals and
All whole house ventilation requirements as determined by Section M1507.3 of the International Residential Code or Section
403.8 of the International Mechanical Code shall be met with a heat recovery ventilation system with minimum sensible heat
recovery efficiency of 0.65. 1
3.5 Air-source, centrally ducted heat pump with minimum HSPF of 11.0. 4
5.1 A drain water heat recovery unit(s)shall be installed, which captures wastewater heat from all and only the showers and
has a minimum efficiency of 40% if installed for equal flow or a minimum efficiency of 54% if installed for unequal flow. Such
units shall be rated in accordance with CSA B55.1 or IAPMO IGC 346-2017 and be so labeled. To qualify to claim this credit,
the building permit drawings shall include a plumbing diagram that specifies the drain water heat recovery units and the
plumbing layout needed to install it. Labels or other documentation shall be provided that demonstrates that the unit
complies with the standard.
5.3 Water heating system shall include one of the following:
Energy Star rated gas or propane water heater with a minimum UEF of 0.91 or Solar water heating supplementing a
minimum standard water heater. Solar water heating will provide a rated minimum savings of 85 therms or 2000 kWh based
on the Solar Rating and Certification Corporation (SRCC)Annual Performance of OG-300 Certified Solar Water Heating
Systems or Water heater heated by ground source heat pump meeting requirements of Option 3.3
* 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.
Provisions for surface/subsurface drainage control must be implemented with new construction or development on site and
MUST NOT adversely impact adjacent parcels. Under the requirements of Mason County Stormwater Ordinance, either
private ditches and drains will meet requirements of the stormwater ordinance or prior approval will be granted to use an
existing utility and drainage easement dedicated for that specific purpose. For further information regarding this ordinance
contact the Mason County Public Works Department prior to construction at Ext 450
Printed by:Annie Wilson on:08/16/2023 10:04 AM
Page 4 of 8
0 Mason County
Mason County - Division of Community Development
615 W.Alder St.
Building 8
Shelton, WA 98584
360-427-9670 ext 352
www.masoncountywa.gov
NEW SINGLE FAMILY RESIDENCE BLD2023-00390
* When parcel development requires direct access to county road(s), a Road Access Permit or Approval must be granted by
the Mason County Department of Public Works. For any construction which is proposed to be located within 25'of a Mason
County road right of way, it is suggested to contact that office to review future planned work which may affect your project.
For more information contact Public Works, at(360)427-9670, ext. 450 or 100 W Public Works Dr. Shelton. The building
permit will not be finaled until the permit holder can show proof that the access permit from Public Works has been finaled
and approved.
* Carbon monoxide alarms, listed as complying with UL 2075 shall be installed in accordance with manufacturer
specifications and in accordance with IRC Section R315.
Alarms shall be installed outside of each separate sleeping area in the immediate vicinity of the bedrooms and on each level
of the dwelling.
EXISTING DWELLINGS shall be equipped with carbon monoxide alarms when alterations (including addition or alteration of
fuel burning appliances), repairs, or additions requiring a permit occur, or when one or more sleeping rooms are added or
created.
* Landings and stairs must meet the same setback conditions as any permitted structure; and, must be shown on your site
plan. Please check your"Approved Site Plan"to ensure these structures are shown and meet the setback conditions listed.
* All building permits shall have a final inspection performed and approved by Mason County Building Department prior to
permit expiration. The failure to request a final inspection or to obtain approval will be documented in the legal property
records on file with Mason County as being non-compliant with Mason County ordinances and building regulations.
* Installation of heating equipment in a single-family residence shall meet the requirements of the current WSEC R403,
applicable sections of the IRC, and IMC.
Heating equipment shall be sized in accordance to ICC/WSEC, Section R403.7. Heating and design load calculations for the
purpose of sizing HVAC systems are required and shall be calculated in accordance with accepted practice, including
infiltration and ventilation. Design calculations shall be available for inspection during inspection.
Referencing IRC M1601.4, all ducts, air handlers,filter boxes, and building cavities shall be sealed. All joints of duct
systems and seams shall be made substantially air tight by means of tapes, mastics, liquid sealants, gasketing or other
approved closure systems. Closure systems used with rigid fibrous glass ducts shall comply with UL181A and shall be
marked 181A-P for pressure-sensitive tape, 181A-M for mastic or 181 A-H for heat-sensitive tape. Closure systems used
with flexible air ducts and flexible air connectors shall comply with UL181 B and shall be marked 181 B-FX for pressure-
sensitive tape or 181 B-M for mastic. Duct connections to flanges of air distribution system equipment or sheet metal fittings
shall be mechanically fastened. Mechanical fasteners for use with flexible nonmetallic air ducts shall comply with UL 181 B
and shall be marked 181 B-C. Crimp joints for round metal ducts shall have a contact lap of at least 1-1/2 inches (38 mm)
and shall be mechanically fastened by means of at least three sheet-metal screws or rivets equally spaced around the joint.
Closure systems used to seal metal ductwork shall be installed in accordance with the manufacturer's installation
instructions.
Duct tape is NOT permitted as a sealant on any ducts. When ducts are located in unheated spaces the ducts hall be
insulated to R-8
DUCT TIGHTNESS TESTING shall be conducted by person(s)trained to perform such testing. A signed affidavit
documenting test results in accordance to IECC/WSEC Section R403.3.3 shall be provided to the Mason County Building
Department prior to the final occupancy inspection. Affidavit forms are available on at the WSU-Energy Program website
titles, "Duct Leakage Affidavit"or"Duct Leakage Testing Results (Existing Construction)." Duct tightness testing is not
required if the air handler and all ducts are located within the heated space.
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Page 5 of 8
0 Mason County
Mason County - Division of Community Development
615 W. Alder St.
Building 8
Shelton, WA 98584
360-427-9670 ext 352
www.masoncountywa.gov
NEW SINGLE FAMILY RESIDENCE BLD2023-00390
The plan review check list and corrections are part of the approved plans and must remain attached. It is the responsibility
of the applicant, owner or contractor to make the required corrections indicated on the plans. Once the plans are marked
"APPROVED", they shall not be changed or altered without authorization from the Building Official. The permit holder is
responsible to retain the complete approved set of plans on site for the duration of the project. Failure to comply and/or
removal of approved documents will result in failure of required building inspections.
* WIND LOADS- Roof coverings shall be designed and tested to withstand the maximum basic wind speed. The basic
wind speed for Mason County is 85 MPH.
* By definition, propane tanks and heatpumps are structures, which must meet setback conditions. Please check your
"Approved Site Plan"to ensure these structures meet the setback conditions listed.
* Contractor registration laws are governed under RCW 18.27 and enforced by the WA State Dept of Labor and Industries,
Contractor Compliance Division. There are potential risks and monetary liabilities to the homeowner for using an
unregistered contractor. Further information can be obtained at 1-800-647-0982. The person signing this condition is either
the homeowner, agent for the owner or a registered contractor according to WA state law.
* A permanent certificate, completed by the builder or registered design professional, shall be posted on a wall in the space
where the furnace is located, a utility room, or an approved location inside the building. When located on the elctrical panel,
the certificate shall not cover or obstruct the visibility of the circuit directory label, service disconnect labek, or toher reqyired
Iabels.The certificate shall list the predominant R-values of insulation installed in or on ceiling/roof, walls,foundation (slab,
basement wall, crawlspace wall and/or floor), and ducts outside the conditioned spaces; U-factors for fenestration; and the
solar heat gain coefficient (SHGC) of fenestration. Where there is more than one value for each component, the certificate
shall list the value covering the largest area. The certificate shall list the type and efficiency of heating, cooling, and service
water heating equipment, duct leakage rates including test conditions as specified in WSEC Chapter 4, and air leakage
results if a blower door test was conducted.
Building envelope air leakage control shall be considered acceptable when tested to have an air leakage less than 5 air
changes per hour when tested with a blower door in accordanve with WSEC Section R402.4.1.2.
The blower door test results shall be recorded on the permanent certificate required located near the electrical distribution
panel. Air leakage testing is not required for additions less than 500 square feet. Reference WSEC R402.4.1.2.
Compliance certificates are available online at the WSU Energy program website titled, "WSEC 2015 Certificate" and are
available in 1/4 or 1/2 sheets.
* A minimum of 90 percent of all permanently installed lamps in lighting fixtures shall be high efficacy lamps in accordance
with IECC/WSEC Section R404.1.
* The stamped approved site plan is required to be on-site for inspection purposes. If an inspection is requested and the
approved site plan is not on site, approval will not be granted. In addition, a re-inspection fee (refer to current fee schedule,
minimum 1 hour)will be charged and shall be collected by the Building Department prior to any further inspections being
performed or approvals granted.
* The foundation/footing must be placed on undisturbed, firm-native soil. Proper frost depth shall be observed below grade
in undisturbed soils.
* When parcel development requires direct access to state road(s), a Road Access Permit or Approval must be granted and
approved by the Washington State Department of Transportation. For more information contact Washington State
Department of Transportation, at(206)357-2620, ext. 630.
* The international code requires a fire apparatus access road for every facility, building, or portion of a building that is more
than 150'from an approved access road. Roads are required to meet the minimum Mason County Fire Marshal standards
for Fire Apparatus Access Roads up to the point where such roads connect with a county maintained public road or to
another fire apparatus access road which connects to a county maintained public road.
Printed by:Annie Wilson on:08/16/2023 10:04 AM
Page 6 of 8
Mason County
Mason County - Division of Community Development
615 W. Alder St.
Building 8
Shelton, WA 98584
360-427-9670 ext 352
www.masoncountywa.gov
NEW SINGLE FAMILY RESIDENCE BLD2023-00390
REQUIREMENTS FOR ROOF COVERINGS. Roof coverings shall be applied in accordance with the applicable
provisions of the current code and the manufacturer's installation instructions.
A drip edge shall be provided at eaves and gables of shingle roofs.
* CONSTRUCTION PROCESS TO BE FIELD CORRECTED AS REQUIRED PER MASON COUNTY BUILDING
DEPARTMENT AND THE ADOPTED BUILDING CODE.
The construction of the permitted project is subject to inspections by the Mason County Building Department. All
construction must be in conformance with the international codes as amended and adopted by Mason County. Any
corrections, changes or alterations required by a Mason County Building Inspector shall be made prior to requesting
additional inspections.
* All construction must meet or exceed all local and state ordinances in addition to the International Codes requirements as
adopted and amended by Mason County and the State of Washington. Occupancy is limited to the approved and permitted
classification. Any non-approved change of use or occupancy would result in permit revocation.
* Owner/Agent is responsible to post the assigned address and/or purchase and post private road signs in accordance
with Mason County Title 14.28 and 14.17.
* Concrete encased grounding electrodes must be installed and used at each new building or structure that is built upon a
permanent concrete foundation. In Mason County the electrical code is regulated by Washington State Department of Labor
& Industries (L&I).
For more information contact L&I for additional information. In Olympia call (360)902-6350 and in Bremerton call (360)415-
4000.
* All property lines shall be clearly identified at the time of foundation inspection.
* Pressure treated wood manufactured after January 1, 2004 may contain high concentrations of copper which could quickly
corrode metal fasteners, connectors, and flashing. Install metal connectors approved for contact with the new types of
pressure treated material.
* Retaining walls needed to support a surcharge such as structures, roads, or to support slopes, shall require a separate
building permit and approval prior to construction of the retaining wall.
* All permits expire 180 days after permit issuance, or 180 days after the last inspection activity is performed. The Building
Official may grant a one time extention of 180 days, upon the receipt of a written extension request prior to permit expiration.
Letter must indicating that circumstances beyond the control of the permit holder preventing action from being taken. No
more than one extension may be granted.
* Concrete used for basement walls, foundation walls, exterior walls, porches, carport slabs, steps exposed to the weather,
garage floor slabs and other vertical concrete work exposed to the weather shall have a minimum compressive strength of
3000 psi (IRC Table R402.2).
* Planning Setbacks
Front: 25'
Sides: 20'
Rear: 20'
*all setbacks measured from the farthest projection of the building
*subject to EH setbacks
*all changes subject to approval
* On-site Septic System final installation approval required prior to temporary/final occupancy of the residence.
Printed by:Annie Wilson on:08/16/2023 10:04 AM
Page 7 of 8
0 Mason County
Mason County - Division of Community Development
615 W.Alder St.
Building 8
Shelton, WA 98584
360-427-9670 ext 352
www.masoncountywa.gov
NEW SINGLE FAMILY RESIDENCE BLD2023-00390
Applicant/Owner assumes all responsibility if On-site Sewage Components are encumbered.
A.) Drainfield/ Reserve requires a 1 Oft setback from all footing/foundations.
B.) Septic tank(s) requires 5ft setback from all footing/foundations.
C.) No foundation/ Perimeter Drains within 30ft, down gradient of Drainfield/ Reserve area.
D.) No Cut Bank(s)(greater than 5ft and over 45 degrees)within 50ft, down gradient of Drainfield/Reserve area.
* All propane tanks must be installed in accordance with the International Fire Code and all applicable Mason County
ordinances. All propane tanks must meet the installation requirements and minimum setbacks as listed in the Mason County
Fire Marshal's Standards for the Installation of Propane Tanks.
I hereby certify that I have read and examined this application and know the same to be true and correct.
All provisions of Laws and Ordinances governing this type of work will be complied with whether
specified herein or not. The granting of a permit does not presume to give authority to violate or cancel
the provisions of any other l state/local law regulating construction or the performance of construction.
Issued By: {7 I€V )j' ('yi
Contractor or Authorized Agent: -Date:
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Page 8 of 8
osS a3�o
A105.2 Crawlspace description. Four the cavity exposed to the outside air or rigid
configurations are considered: Naturally ventilated insulation below a concrete floor,such as over
crawlspace,mechanically vented crawlspace,heated parking garages.
plenum crawlspace and exposed floor. A105.3 Construction description. Floors are
A105.2.1 Naturally ventilated crawlspaces. assumed to be either joisted floors framed on 16 inch
Assumed to have 3.0 air changes per hour,with at centers,or post and beam on 4 foot by 8 foot squares.
least 1.0 ft2 of net-free ventilation in the foundation Insulation is assumed to be installed under the
for every 300 ft2 of crawlspace floor area. The subflooring between the joists or beams with no
crawlspace is not actively heated. Floors over space between the insulation and the subfloor.
unheated areas, such as garages,may only use those Insulation is assumed to be uncompressed. Exposed
values which have R-0 perimeter insulation, floors also include concrete with continuous rigid
A105.2.2 Mechanically ventilated crawlspaces.
insulation assumed.
Assume to have 1.5 air changes per hour,with less Perimeter insulation is assumed to extend from the
than 1.0 ft2 of net-free ventilation in the foundation top of the rim joist to the crawlspace floor and then
for every 300 ft2 of crawlspace floor area. The inward along the ground(on top of the ground cover)
crawlspace is not actively heated. Floors over for at least 24 inches.
unheated basements may only use those values which Floor coverings are assumed to be light carpet with
have -0 perimeter insulation. rubber pad.
A105.2.3 Heated plenum crawlspaces. Assumed to
have 0.25 air changes per hour,with no foundation SECTION A106
vents. Heated supply air from central furnace is ON-GRADE SLAB FLOORS
blown into a crawlspace and allowed to enter the A106.1 General. Table A106.1 lists heat loss
living space unducted via holes cut into the floor. coefficients for heated on-grade slab floors,in units
A10 . .4 Exposed floors. Assumes no buffer space, of Btu/h x °F per lineal foot of perimeter.
and a covering of 1/2 inch TI-11 on the exterior of
TABLE A106.1
DEFAULT F-FACTORS FOR ON-GRADE SLABS
Insulation type R-0 R-5 R-10 R-15
Unheated Slab
Uninsulated slab 0.73 -- -- --
2 ft Horizontal(No thermal break) -- 0.70 0.70 0.69
4 ft Horizontal(No thermal break) -- 0.67 0.64 0.63
2 ft Vertical -- 0.58 0.54 0.52
4 ft Vertical -- 0.54 0.48 0.45
Fully insulated slab -- -- 0.36 --
Heated Slab
Uninsulated slab 0.84 -- -- --
Fully insulated slab -- 0.74 0.55 0.44
R-5 Center(With perimeter insulation) -- -- 0.66 0.62
R-10 Center(With perimeter insulation) -- -- -- 0.51
3 ft Vertical -- -- 0.78 --
2018 Washington State Energy Code AE-31
/255 6' l 2e Z - rn
APPENDIX F
crbWA≥N CONTROL METHODS
provisions contained in this appendix are not mandatory unless specifically referenced in the adopting ordinance.
User note:
About this appendix:Appendix F contains provisions that are intended to mitigate the transfer of radon gases from the soil into dwelling
units.Radon is a radioactive gas that has been identified as a cancer-causing agent.Radon comes from the natural breakdown of uranium in
soil,rock and water.
SECTION AF101 SECTION AF103
SCOPE REQUIREMENTS
AF101.1 General. This appendix contains requirements for AF103.1 General.The following construction techniques are
new construction in jurisdictions where radon-resistant con- intended to resist radon entry and prepare the building for
struction is required. post-construction radon mitigation, if necessary (see Figure
Inclusion of this appendix by jurisdictions shall be deter- AF103). These techniques are required in areas where desig-
nated by the jurisdiction.
mined through the use of locally available data or determina-
tion of Zone 1 designation in Figure AF101 and Table AF103.2 Subfloor preparation. A layer of gas-permeable
AF101(1). material shall be placed under all concrete slabs and other
floor systems that directly contact the ground and are within
the walls of the living spaces of the building, to facilitate
SECTION AF102 future installation of a subslab depressurization system, if
DEFINITIONS needed. The gas-permeable layer shall consist of one of the
following:
AF102.1 General.For the purpose of these requirements,the
terms used shall be defined as follows: 1. A uniform layer of clean aggregate, not less than 4
DRAIN TILE LOOP. A continuous length of drain tile or inches (102 mm) thick. The aggregate shall consist of
material that will pass through a 2-inch (51 mm) sieve
perforated pipe extending around all or part of the internal or and be retained by a'/4 inch(6.4 mm)sieve.
external perimeter of a basement or crawl space footing.
2. A uniform layer of sand(native or fill), not less than 4
RADON GAS. A naturally occurring, chemically inert, inches (102 mm) thick, overlain by a layer or strips of
radioactive gas that is not detectable by human senses. As a geotextile drainage matting designed to allow the lat-
gas, it can move readily through particles of soil and rock, eral flow of soil gases.
and can accumulate under the slabs and foundations of homes
where it can easily enter into the living space through con- 3. Other materials, systems or floor designs with demon-
struction cracks and openings. strated capability to permit depressurization across the
entire subfloor area.
SOIL-GAS-RETARDER.A continuous membrane of 6-mil AF103.3 Soil-gas-retarder.A minimum 6-mil(0.15 mm)[or
(0.15 mm) polyethylene or other equivalent material used to 3-mil (0.075 mm) cross-laminated] polyethylene or equiva-
retard the flow of soil gases into a building. lent flexible sheeting material shall be placed on top of the
SUBMEMBRANE DEPRESSURIZATION SYSTEM. A gas-permeable layer prior to casting the slab or placing the
system designed to achieve lower submembrane air pressure floor assembly to serve as a soil-gas-retarder by bridging any
relative to crawl space air pressure by use of a vent drawing cracks that develop in the slab or floor assembly, and to pre-
air from beneath the soil-gas-retarder membrane. vent concrete from entering the void spaces in the aggregate
SUBSLAB DEPRESSURIZATION SYSTEM (Active). A base material. The sheeting shall cover the entire floor area
system designed to achieve lower subslab air pressure rela- with separate sections of sheeting lapped not less than 12
tive to indoor air pressure by use of a fan-powered vent draw- inches (305 mm). The sheeting shall fit closely around any
ing air from beneath the slab. pipe, wire or other penetrations of the material. Punctures or
tears in the material shall be sealed or covered with additional
SUBSLAB DEPRESSURIZATION SYSTEM(Passive).A sheeting.
system designed to achieve lower subslab air pressure rela-
tive AF103.4 Entry routes. Potential radon entry routes shall be
to indoor air pressure by use of a vent pipe routed closed in accordance with Sections AF103.4.1 through
through the conditioned space of a building and connecting AF103.4.10.
the subslab area with outdoor air,thereby relying on the con-
vective flow of air upward in the vent to draw air from AF103.4.1 Floor openings. Openings around bathtubs,
beneath the slab. showers, water closets, pipes, wires or other objects that
2018 INTERNATIONAL RESIDENTIAL CODE® 861
APPENDIX F
penetrate concrete slabs,or other floor assemblies,shall be AF103.4.10 Crawl space access.Access doors and other
filled with a polyurethane caulk or equivalent sealant openings or penetrations between basements and adjoining
applied in accordance with the manufacturer's recommen- crawl spaces shall be closed, gasketed or otherwise filled
dations. to prevent air leakage.
• AF103A.2 Concrete joints. Control joints, isolation joints, AF103.5 Passive submembrane depressurization system.
construction joints, and any other joints in concrete slabs or In buildings with crawl space foundations, the following
between slabs and foundation walls shall be sealed with a caulk components of a passive submembrane depressurization sys-
or sealant. Gaps and joints shall be cleared of loose material tem shall be installed during construction.
and filled with polyurethane caulk or other elastomeric sealant Exception: Buildings in which an approved mechanical
applied in accordance with the manufacturer's recommenda-
lions. crawl space ventilation system or other equivalent system
is installed.
AF103.4.3 Condensate drains. Condensate drains shall AF103.5.1 Ventilation. Crawl spaces shall be provided
be trapped or routed through nonperforated pipe to day- P
light, with vents to the exterior of the building. The minimum
net area of ventilation openings shall comply with Section
AF103.4.4 Sumps. Sump pits open to soil or serving as R408.1.
the termination point for subslab or exterior drain tile
loops shall be covered with a gasketed or otherwise sealed AF103.5.2 Soil-gas-retarder. The soil in crawl spaces
lid. Sumps used as the suction point in a subslab depres- shall be covered with a continuous layer of minimum 6-
surization system shall have a lid designed to accommo- mil (0.15 mm)polyethylene soil-gas-retarder.The ground
date the vent pipe.Sumps used as a floor drain shall have a cover shall be lapped not less than 12 inches (305 mm)at
lid equipped with a trapped inlet, joints and shall extend to all foundation walls enclosing
the crawl space area.
AF103.4.5 Foundation walls. Hollow block masonry
foundation walls shall be constructed with either a contin- AF103.5.3 Vent pipe. A plumbing tee or other approved
uous course of solid masonry, one course of masonry connection shall be inserted horizontally beneath the
grouted solid, or a solid concrete beam at or above fm- sheeting and connected to a 3- or 4-inch-diameter (76 or
ished ground surface to prevent the passage of air from the 102 mm)fitting with a vertical vent pipe installed through
interior of the wall into the living space. Where a brick the sheeting. The vent pipe shall be extended up through
veneer or other masonry ledge is installed, the course the building floors, and terminate not less than 12 inches
immediately below that ledge shall be sealed. Joints, (305 mm)above the roof in a location not less than 10 feet
cracks or other openings around all penetrations of both (3048 mm) away from any window or other opening into
exterior and interior surfaces of masonry block or wood the conditioned spaces of the building that is less than 2
foundation walls below the ground surface shall be filled feet(610 mm)below the exhaust point, and 10 feet(3048
with polyurethane caulk or equivalent sealant. Penetra- mm) from any window or other opening in adjoining or
tions of concrete walls shall be filled, adjacent buildings.
AF103.4.6 Dampproofing. The exterior surfaces of por- AF103.6 Passive subslab depressurization system.In base-
tions of concrete and masonry block walls below the mentor slab-on-grade buildings,the following components of
ground surface shall be dampproofed in accordance with a passive subslab depressurization system shall be installed
Section R406. during construction.
AF103.4.7 Air-handling units. Air-handling units in AF103.6.1 Vent pipe. A minimum 3-inch-diameter (76
crawl spaces shall be sealed to prevent air from being mm) ABS, PVC or equivalent gas-tight pipe shall be
drawn into the unit. embedded vertically into the subslab aggregate or other
permeable material before the slab is cast.A"T"fitting or
Exception:Units with gasketed seams or units that are equivalent method shall be used to ensure that the pipe
otherwise sealed by the manufacturer to prevent leak- opening remains within the subslab permeable material.
age. Alternatively, the 3-inch (76 mm) pipe shall be inserted
AF103.4.8 Ducts.Ductwork passing through or beneath a directly into an interior perimeter drain tile loop or through
slab shall be of seamless material unless the air-handling a sealed sump cover where the sump is exposed to the sub-
system is designed to maintain continuous positive pres- slab aggregate or connected to it through a drainage sys-
sure within such ducting.Joints in such ductwork shall be tem.
sealed to prevent air leakage. The pipe shall be extended up through the building
Ductwork located in crawl spaces shall have seams and floors, and terminate not less than 12 inches (305 mm)
joints sealed by closure systems in accordance with Sec- above the surface of the roof in a location not less than 10
tion M1601.4.1. feet(3048 mm)away from any window or other opening
into the conditioned spaces of the building that is less than
AF103.4.9 Crawl space floors.Openings around all pen- 2 feet (610 mm) below the exhaust point, and 10 feet
etrations through floors above crawl spaces shall be (3048 mm) from any window or other opening in adjoin-
caulked or otherwise filled to prevent air leakage. ing or adjacent buildings.
862 2018 INTERNATIONAL RESIDENTIAL CODE•
e �
APPENDIX F
AF103.6.2 Multiple vent pipes. In buildings where inte-
rior footings or other barriers separate the subslab aggre-
gate or other gas-permeable material, each area shall be
fitted with an individual vent pipe. Vent pipes shall con-
nect to a single vent that terminates above the roof or each
individual vent pipe shall terminate separately above the
roof.
AF103.7 Vent pipe drainage.Components of the radon vent
pipe system shall be installed to provide positive drainage to
the ground beneath the slab or soil-gas-retarder.
AF103.8 Vent pipe accessibility. Radon vent pipes shall be
accessible for future fan installation through an attic or other
area outside the habitable space.
Exception: The radon vent pipe need not be accessible in
an attic space where an approved roof-top electrical sup-
ply is provided for future use.
AF103.9 Vent pipe identification.Exposed and visible inte-
rior radon vent pipes shall be identified with not less than one
label on each floor and in accessible attics. The label shall
read: "Radon Reduction System."
AF103.10 Combination foundations. Combination base-
ment/crawl space or slab-on-grade/crawl space foundations
shall have separate radon vent pipes installed in each type of
foundation area. Each radon vent pipe shall terminate above
the roof or shall be connected to a single vent that terminates
above the roof.
AF103.11 Building depressurization.Joints in air ducts and
plenums in unconditioned spaces shall meet the requirements
of Section M1601. Thermal envelope air infiltration require-
ments shall comply with the energy conservation provisions
in Chapter 11.Fireblocking shall meet the requirements con-
tained in Section R302.11.
AF103.12 Power source. To provide for future installation
of an active submembrane or subslab depressurization sys-
tem,an electrical circuit terminated in an approved box shall
be installed during construction in the attic or other antici-
pated location of vent pipe fans.An electrical supply shall be
accessible in anticipated locations of system failure alarms.
2018 INTERNATIONAL RESIDENTIAL CODE® 863
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APPENDIX F
TABLE AF1 01(1)
HIGH RADON-POTENTIAL(ZONE 1)COUNTIES'
ALABAMA CONNECTICUT Morgan Wabash Trego Hillsdale Watonwan
Calhoun Fairfield Moultrie Warren Wallace Jackson Wilkin
Clay Middlesex Ogle Washington Washington Kalamazoo Winona
Cleburne New Haven Peoria Wayne Wichita Lenawee Wright
Colbert New London Piatt Wells Wyandotte St.Joseph Yellow Medicine
Coosa Pike White Washtenaw
Franklin GEORGIA Putnam Whitley KENTUCKY MISSOURI
Jackson Cobb Rock Island Adair MINNESOTA Andrew
Lauderdale De Kalb Sangamon IOWA Allen Becker Atchison
Lawrence Fulton Schuyler All Counties Barren Big Stone Buchanan
Limestone Gwinnett Scott Bourbon Blue Earth Cass
Madison Stark KANSAS Boyle Brown Clay
Morgan IDAHO Stephenson Atchison Bullitt Carver Clinton
Talladega Benewah Tazewell Barton Casey Chippewa Holt
Blaine Vermilion Brown Clark Clay Iron
CALIFORNIA Boise Warren Cheyenne Cumberland Cottonwood Jackson
Santa Barbara Bonner Whiteside Clay Fayette Dakota Nodaway
Ventura Boundary Winnebago Cloud Franklin Dodge Platte
Butte Woodford Decatur Green Douglas
COLORADO Camas Dickinson Harrison Faribault MONTANA
Adams Clark INDIANA Douglas Hart Fillmore Beaverhead
Arapahoe Clearwater Adams Ellis Jefferson Freeborn Big Horn
Baca Custer Allen Ellsworth Jessamine Goodhue Blaine
Bent Elmore Bartholomew Finney Lincoln Grant Broadwater
Boulder Fremont Benton Ford Marion Hennepin Carbon
Chaffee Gooding Blackford Geary Mercer Houston Carter
Cheyenne Idaho Boone Gove Metcalfe Hubbard Cascade
Clear Creek Kootenai Carroll Graham Monroe Jackson Chouteau
Crowley Latah Cass Grant Nelson Kanabec Custer
Custer Lemhi Clark Gray Pendleton Kandiyohi Daniels
Delta Shoshone Clinton Greeley Pulaski Kittson Dawson
Denver Valley De Kalb Hamilton Robertson Lac Qui Parle Deer Lodge
Dolores Decatur Haskell Russell Le Sueur Fallon
Douglas ILLINOIS Delaware Hodgeman Scott Lincoln Fergus
El Paso Adams Elkhart Jackson Taylor Lyon Flathead
Elbert Boone Fayette Jewell Warren Mahnomen Gallatin
Fremont Brown Fountain Johnson Woodford Marshall Garfield
Garfield Bureau Fulton Kearny Martin Glacier
Gilpin Calhoun Grant Kingman MAINE McLeod Granite
Grand Carroll Hamilton Kiowa Androscoggin Meeker Hill
Gunnison Cass Hancock Lane Aroostook Mower Jefferson
Huerfano Champaign Harrison Leavenworth Cumberland Murray Judith Basin
Jackson Coles Hendricks Lincoln Franklin Nicollet Lake
Jefferson De Kalb Henry Logan Hancock Nobles Lewis and Clark
Kiowa De Witt Howard Marion Kennebec Norman Madison
Kit Carson Douglas Huntington Marshall Lincoln Olmsted McCone
Lake Edgar Jay McPherson Oxford Otter Tail Meagher
Larimer Ford Jennings Meade Penobscot Pennington Missoula
Las Animas Fulton Johnson Mitchell Piscataquis Pipestone Park
Lincoln Greene Kosciusko Nemaha Somerset Polk Phillips
Logan Grundy LaGrange Ness York Pope Pondera
Mesa Hancock Lawrence Norton Ramsey Powder River
Moffat Henderson Madison Osborne MARYLAND Red Lake Powell
Montezuma Henry Marion Ottawa Baltimore Redwood Prairie
Montrose Iroquois Marshall Pawnee Calvert Renville Ravalli
Morgan Jersey Miami Phillips Carroll Rice Richland
Otero Jo Daviess Monroe Pottawatomie Frederick Rock Roosevelt
Ouray Kane Montgomery Pratt Harford Roseau Rosebud
Park Kendall Noble Rawlins Howard Scott Sanders
Phillips Knox Orange Republic Montgomery Sherburne Sheridan
Pitkin La Salle Putnam Rice Washington Sibley Silver Bow
Prowers Lee Randolph Riley Steams Stillwater
Pueblo Livingston Rush Rooks MASS. Steele Teton
Rio Blanco Logan Scott Rush Essex Stevens Toole
San Miguel Macon Shelby Saline Middlesex Swift Valley
Summit Marshall St.Joseph Scott Worcester Todd Wibaux
Teller Mason Steuben Sheridan Traverse Yellowstone
Washington McDonough Tippecanoe Sherman MICHIGAN Wabasha
Weld McLean Tipton Smith Branch Wadena
Yuma Menard Union Stanton Calhoun Waseca
Mercer Vermillion Thomas Cass Washington
(continued)
2018 INTERNATIONAL RESIDENTIAL CODE® 865
APPENDIX F
TABLE AF101(1)--contlnued
HIGH RADON-POTENTIAL(ZONE 1)COUNTIES'
NEBRASKA Morris Columbiana Lehigh Union Fairfax Crawford
Adams Somerset Coshocton Luzerne Walworth Falls Church Dane
Boone Sussex Crawford Lycoming Yankton Fluvanna Dodge
Boyd Warren Darke Mifflin Frederick Door
Burt Delaware Monroe TENNESEE Fredericksburg Fond du Lac
Butler NEW MEXICO Fairfield Montgomery Anderson Giles Grant
Cass Bemalillo Fayette Montour Bedford Goochland Green
Cedar Colfax Franklin Northampton Blount Harrisonburg Green Lake
Clay Mora Greene Northumberland Bradley Henry Iowa
Colfax Rio Arriba Guernsey Perry Claiborne Highland Jefferson
Cuming San Miguel Hamilton Schuylkill Davidson Lee Lafayette
Dakota Santa Fe Hancock Snyder Giles Lexington Langlade
Dixon Taos Hardin Sullivan Grainger Louisa Marathon
Dodge Harrison Susquehanna Greene Martinsville Menominee
Douglas NEW YORK Holmes Tioga Hamblen Montgomery Pepin
Fillmore Albany Huron Union Hancock Nottoway Pierce
Franklin Allegany Jefferson Venango Hawkins Orange Portage
Frontier Broome Knox Westmoreland Hickman Page Richland
Furnas Cattaraugus Licking Wyoming Humphreys Patrick Rock
Gage Cayuga Logan York Jackson Pittsylvania Shawano
Gosper Chautauqua Madison Jefferson Powhatan St.Croix
Greeley Chemung Marion RHODE ISLAND Knox Pulaski Vernon
Hamilton Chenango Mercer Kent Lawrence Radford Walworth
Harlan Columbia Miami Washington Lewis Roanoke Washington
Hayes Cortland Montgomery Lincoln Rockbridge Waukesha
Hitchcock Delaware Morrow S.CAROLINA Loudon Rockingham Waupaca
Hurston Dutchess Muskingum Greenville Marshall Russell Wood
Jefferson Erie Perry Maury Salem
Johnson Genesee Pickaway S.DAKOTA McMinn Scott WYOMING
Kearney Greene Pike Aurora Meigs Shenandoah Albany
Knox Livingston Preble Beadle Monroe Smyth Big Horn
Lancaster Madison Richland Bon Homme Moore Spotsylvania Campbell
Madison Onondaga Ross Brookings Perry Stafford Carbon
Nance Ontario Seneca Brown Roane Staunton Converse
Nemaha Orange Shelby Brule Rutherford Tazewell Crook
Nuckolls Otsego Stark Buffalo Smith Warren Fremont
Otoe Putnam Summit Campbell Sullivan Washington Goshen
Pawnee Rensselaer Tuscarawas Charles Mix Trousdale Waynesboro Hot Springs
Phelps Schoharie Union Clark Union Winchester Johnson
Pierce Schuyler Van Wert Clay Washington Wythe Laramie
Platte Seneca Warren Codington Wayne Lincoln
Polk Steuben Wayne Corson Williamson WASHINGTON Natrona
Red Willow Sullivan Wyandot Davison Wilson Clark Niobrara
Richardson Tioga Day Ferry Park
Saline Tompkins PENNSYLVANIA Deuel UTAH Okanogan Sheridan
Sarpy Ulster Adams Douglas Carbon Pend Oreille Sublette
Saunders Washington Allegheny Edmunds Duchesne Skamania Sweetwater
Seward Wyoming Armstrong Faulk Grand Spokane Teton
Stanton Yates Beaver Grant Piute Stevens Uinta
Thayer Bedford Hamlin Sanpete Washakie
Washington N.CAROLINA Berks Hand Sevier W.VIRGINIA
Wayne Alleghany Blair Hanson Uintah Berkeley
Webster Buncombe Bradford Hughes Brooke
York Cherokee Bucks Hutchinson VIRGINIA Grant
Henderson Butler Hyde Alleghany Greenbrier
NEVADA Mitchell Cameron Jerauld Amelia Hampshire
Carson City Rockingham Carbon Kingsbury Appomattox Hancock
Douglas Transylvania Centre Lake Augusta Hardy
Eureka Watauga Chester Lincoln Bath Jefferson
Lander Clarion Lyman Bland Marshall
Lincoln N.DAKOTA Clearfield Marshall Botetourt Mercer
Lyon All Counties Clinton McCook Bristol Mineral
Mineral Columbia McPherson Brunswick Monongalia
Pershing OHIO Cumberland Miner Buckingham Monroe
White Pine Adams Dauphin Minnehaha Buena Vista Morgan
Allen Delaware Moody Campbell Ohio
NEW Ashland Franklin Perkins Chesterfield Pendleton
HAMPSHIRE Auglaize Fulton Potter Clarke Pocahontas
Carroll Belmont Huntingdon Roberts Clifton Forge Preston
Butler Indiana Sanborn Covington Summers
NEW JERSEY Carroll Juniata Spink Craig Wetzel
Hunterdon Champaign Lackawanna Stanley Cumberland
Mercer Clark Lancaster Sully Danville WISCONSIN
Monmouth Clinton Lebanon Turner Dinwiddie Buffalo
a. The EPA recommends that this county listing be supplemented with other available State and local data to further understand the radon potential of a Zone 1
area.
866 2018 INTERNATIONAL RESIDENTIAL CODE®
APPENDIX F
TYPICAL SUBSLAB DEPRESSURIZATION PASSIVE RADON SYSTEM VENTED
PASSIVE RADON SYSTEM THROUGH SUMP
ATTIC ATTIC
LIVING AREA LIVING AREA
GRADE GRADE
GRAVEL * GRAVEL
BASEMENT BASEMENT
POLYETHYLENE SUMP POLYETHYLENE
• SLAB * SHEETING SLAB COVER SHEETING
:GRAVEL:'::::'•':: ''':: GRAVEL':::':
SUMP PIT
PASSIVE RADON SYSTEM USING SUBMEMBRANE DEPRESSURIZATION SYSTEM
DRAIN TILE LOOP FOR CRAWL SPACE
ATTIC
ATTIC
LIVING AREA
GRADE LIVING AREA
GRAVEL
BASEMENT
SLAB POLYETHYLENE
* SHEETING
CRAWL SPACE PERFORATED
GRAVEL;:'.:. :'' GRADE
POLYETHYLENE DRAIN TILE
GRAVEL SHEETING
DRAIN TILE LOOP
FIGURE AF103
RADON-RESISTANT CONSTRUCTION DETAILS FOR FOUR FOUNDATION TYPES
2018 INTERNATIONAL RESIDENTIAL CODE® 867