PDFWAC 51-50-4700

Appendix D—Fire districts.

D102.2.5 Structural fire rating. Walls, floors, roofs and their supporting structural members shall be not less than 1 hour fire-resistance-rated construction.
EXCEPTIONS:
1. Buildings of Type IV-HT construction.
 
2. Buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1.
 
3. Automobile parking structures.
 
4. Buildings surrounded on all sides by a permanently open space of not less than 30 feet (9144 mm).
 
5. Partitions complying with Section 603.1, Item 11.
[Statutory Authority: RCW 19.27.031 and 19.27.074. WSR 20-01-090, § 51-50-4700, filed 12/12/19, effective 7/1/20; WSR 19-02-038, § 51-50-4700, filed 12/26/18, effective 7/1/19.]