Statutes, codes, and regulations
Washington Administrative Code
Title 51 - Enterprise Services, Department of (Building Code Council)
Chapter 51-51 - State Building Code adoption and amendment of the 2021 edition of the International Residential Code
Section 51-51-0311 - Section R311-Means of egress

Wash. Admin. Code § 51-51-0311

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Current through Register Vol. 24-23, December 1, 2024
Section 51-51-0311 - Section R311-Means of egress
R311.4Vertical 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 a ramp in accordance with Section R311.8 or a stairway in accordance with Section R311.7.

EXCEPTION:

Stairways, alternating tread devices, ship's ladders, or ladders within an individual dwelling unit or sleeping unit used for access to areas of 200 square feet (18.6 m2) or less, are exempt from the requirements of Sections R311.4 and R311.7, where such devices do not provide exclusive access to a kitchen or bathroom. Such areas shall not be located more than 10 feet (3048 mm) above the finished floor of the space below.

R311.7.11Alternating tread devices.Alternating tread devices shall not be used as an element of a means of egress. Alternating tread devices shall be permitted provided that a required means of egress stairway or ramp serves the same space at each adjoining level or where a means of egress is not required. The clear width at and below the handrails shall be not less than 20 inches (508 mm).

EXCEPTION:

Not adopted.

R311.7.12Ship's ladders. Ship's ladders shall not be used as an element of a means of egress. Ship's ladders shall be permitted provided that a required means of egress stairway or ramp serves the same space at each adjoining level or where a means of egress is not required. The clear width at and below the handrails shall be not less than 20 inches (508 mm).

EXCEPTION:

Not adopted.

Wash. Admin. Code § 51-51-0311

Amended by WSR 20-03-023, Filed 1/6/2020, effective 7/1/2020
Amended by WSR 23-02-058, Filed 1/3/2023, effective 7/1/2023
Amended by WSR 23-23-104, Filed 11/15/2023, effective 3/16/2024

Statutory Authority: RCW 19.27.031 and 19.27.074. 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. 07-01-090, § 51-51-0311, filed 12/19/06, effective 7/1/07. Statutory Authority: RCW 19.27.031 and 19.27.074. 04-01-109, § 51-51-0311, filed 12/17/03, effective 7/1/04.