Washington Administrative Code
2023 Archive

Chapter 51-51 WAC
Last Update: 11/15/23

STATE BUILDING CODE ADOPTION AND AMENDMENT OF THE 2021 EDITION OF THE INTERNATIONAL RESIDENTIAL CODE
PDF of Chapter Digest
WAC Sections
51-51-001Authority.
51-51-002Purpose.
51-51-003International Residential Code.
51-51-007Exceptions.
51-51-008Implementation.
51-51-01010Section R101Scope and general requirements.
51-51-0102Section R102Applicability.
51-51-0106Reserved.
51-51-0202Section R202Definitions.
51-51-0301Section R301Design criteria.
51-51-0302Section R302Fire-resistant construction.
51-51-0303Section R303Light, ventilation and heating.
51-51-0307Section R307Toilet, bath and shower spaces.
51-51-0308Reserved.
51-51-0309Section R309Garages and carports.
51-51-03100Section 310Emergency escape and rescue openings.
51-51-0311Section R311Means of egress.
51-51-0312Section R312Guards and window fall protection.
51-51-0313Section R313Automatic fire sprinkler systems.
51-51-0314Section R314Smoke alarms and heat detection.
51-51-0315Section R315Carbon monoxide alarms.
51-51-0317Reserved.
51-51-0322Reserved.
51-51-03240Section R324Solar energy systems.
51-51-0325Section R325Mezzanines.
51-51-0326Section R326Habitable attics.
51-51-0327Section R327Swimming pools, spas, and hot tubs.
51-51-0328Section R328Energy storage systems.
51-51-0329Reserved.
51-51-0330Section R330Adult family homes.
51-51-0331Section R331Family home child care.
51-51-0332Section R332Protection against radon.
51-51-0333Section R333Lofts.
51-51-0334Section R334Stationary fuel cell power systems.
51-51-0403Section R403Footings.
51-51-0404Reserved.
51-51-0408Section R408Under-floor space.
51-51-0501Reserved.
51-51-0502Section R502Reserved.
51-51-0507Section R507Decks.
51-51-0602Section R602Wood wall framing.
51-51-0608Reserved.
51-51-0609Section R609Exterior windows and doors.
51-51-0612Reserved.
51-51-0702Section R702Interior covering.
51-51-0703Section R703Exterior covering.
51-51-0806Section R806Reserved.
51-51-0903Section R903Weather protection.
51-51-1001Section R1001Masonry fireplaces.
51-51-1002Section R1002Masonry heaters.
51-51-1004Section R1004Factory-built fireplaces.
51-51-1006Section R1006—Exterior air supply.
51-51-1201Section M1201General.
51-51-1301Section M1301General.
51-51-1302Section M1302Reserved.
51-51-1307Section M1307Appliance installation.
51-51-1413Section M1413Evaporative cooling equipment.
51-51-1415Section M1415Reserved.
51-51-1501Reserved.
51-51-1503Section M1503Domestic cooking exhaust equipment.
51-51-1504Section 1504Exhaust ducts and exhaust openings.
51-51-1505Section M1505Mechanical ventilation.
51-51-1507Reserved.
51-51-1508Section M1508Reserved.
51-51-1600Chapter 16Duct systems.
51-51-1700Chapter 17Combustion air.
51-51-2000Chapter 20Boilers and water heaters.
51-51-2101Section M2101Hydronic piping systems installation.
51-51-2103Section M2103Floor heating systems.
51-51-2105Section M2105Ground-source heat-pump system loop piping.
51-51-2300Section M2301Solar thermal energy systems.
51-51-2439Reserved.
51-51-2904Section 2904Dwelling unit fire-sprinkler systems.
51-51-4400Referenced standards.
51-51-4501Chapter 45Existing buildings and structures.
51-51-4502Section R4502Compliance.
51-51-4503Section R4503Repairs.
51-51-4504Section R4504Alterations.
51-51-4505Section R4505Additions.
51-51-4506Section R4506Relocations.
51-51-60101Appendix F radon control methods.
51-51-60103Section AF103Requirements.
51-51-60104Appendix AQTiny houses.
51-51-60105Appendix UDwelling unit fire sprinkler systems.
51-51-60106Appendix TSolar-ready provisions-detached one- and two-family dwellings and townhouses.
51-51-60107Appendix AWVFire sprinklers.
51-51-60108Appendix YConstruction and demolition material management.
51-51-60109Appendix ZBuilding deconstruction.
DISPOSITION OF SECTIONS FORMERLY CODIFIED IN THIS TITLE
51-51-0101Section R101—Title, scope and purpose. [Statutory Authority: RCW 19.27.031 and 19.27.074. WSR 04-01-109, § 51-51-0101, filed 12/17/03, effective 7/1/04.] Repealed by WSR 07-01-090, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 19.27 and 34.05 RCW.
51-51-0310Section R310—Emergency escape and rescue openings. [Statutory Authority: RCW 19.27.031 and 19.27.074. WSR 16-03-025, § 51-51-0310, filed 1/11/16, effective 7/1/16.] Repealed by stipulated order 16-2-00594-34 of Thurston County Superior Court, WSR 16-11-018, filed 5/6/16, effective 6/30/16.
51-51-0324Section R324—Adult family homes. [Statutory Authority: RCW 19.27.031 and 19.27.074. WSR 04-01-109, § 51-51-0324, filed 12/17/03, effective 7/1/04.] Repealed by WSR 07-01-090, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 19.27 and 34.05 RCW.
51-51-0613Section R613—Exterior windows and glass doors. [Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 19.27 and 34.05 RCW. WSR 07-01-090, § 51-51-0613, filed 12/19/06, effective 7/1/07.] Amended and decodified by WSR 10-03-098, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.031 and 19.27.074. Recodified as § 51-51-0612.
51-51-2401Section G2401 (101)—General. [Statutory Authority: RCW 19.27.031 and 19.27.074. WSR 04-01-109, § 51-51-2401, filed 12/17/03, effective 7/1/04.] Repealed by WSR 07-01-090, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 19.27 and 34.05 RCW.
51-51-2415Section G2415 (404)—Piping system installation. [Statutory Authority: RCW 19.27.031 and 19.27.074. WSR 04-01-109, § 51-51-2415, filed 12/17/03, effective 7/1/04.] Repealed by WSR 07-01-090, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 19.27 and 34.05 RCW.
51-51-4300Chapter 43—Referenced standards. [Statutory Authority: RCW 19.27.074, 19.27.020, and chapters 19.27 and 34.05 RCW. WSR 07-01-090, § 51-51-4300, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. WSR 04-01-109, § 51-51-4300, filed 12/17/03, effective 7/1/04.] Amended and decodified by WSR 10-03-098, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW 19.27.031 and 19.27.074. Recodified as § 51-51-4400.