Statutes, codes, and regulations
Washington Administrative Code
Title 51 - Enterprise Services, Department of (Building Code Council)
Chapter 51-52 - State Building Code adoption and amendment of the 2021 edition of the International Mechanical Code
Section 51-52-0602 - Section 602- Plenums

Wash. Admin. Code § 51-52-0602

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Current through Register Vol. 24-23, December 1, 2024
Section 51-52-0602 - Section 602- Plenums
602.1General. Supply, return, exhaust, relief and ventilation air plenums shall be limited to uninhabited crawl spaces, areas above a ceiling or below the floor, attic spaces and mechanical equipment rooms. Plenums shall be limited to one fire area. Air systems that serve multiple fire areas shall be ducted from the boundary of the fire area served directly to the air-handling equipment. Fuel-fired appliances shall not be installed within a plenum.

Wash. Admin. Code § 51-52-0602

Adopted by WSR 16-01-148, Filed 12/21/2015, effective 7/1/2016
Amended by WSR 23-23-105, Filed 11/15/2023, effective 3/16/2024