R311.4 Vertical egress. Egress from habitable levels including habitable attics and basements not provided with an egress door in accordance with Section R311.2 shall be by ramp in accordance with Section R311.8 or a stairway in accordance with Section R311.7.
EXCEPTION: | Stairs or ladders within an individual dwelling unit used for access to areas of 200 square feet (18.6 m2) or less, and not containing the primary bathroom or kitchen. |
R311.7.3 Vertical rise. A flight of stairs shall not have a vertical rise larger than 12 feet 7 inches (3835 mm) between floor levels or landings.
[Statutory Authority: RCW
19.27.031 and
19.27.074. WSR 20-03-023, § 51-51-0311, filed 1/6/20, effective 7/1/20; WSR 10-03-098, § 51-51-0311, filed 1/20/10, effective 7/1/10. Statutory Authority: RCW
19.27.074,
19.27.020, and chapters
19.27 and
34.05 RCW. WSR 07-01-090, § 51-51-0311, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW
19.27.031 and
19.27.074. WSR 04-01-109, § 51-51-0311, filed 12/17/03, effective 7/1/04.]