Statutes, codes, and regulations
Washington Administrative Code
Title 51 - Enterprise Services, Department of (Building Code Council)
Chapter 51-50 - State Building Code adoption and amendment of the 2021 edition of the International Building Code
Section 51-50-0412 - Section 412-Aircraft-related occupancies

Wash. Admin. Code § 51-50-0412

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Current through Register Vol. 25-01, January 1, 2025
Section 51-50-0412 - Section 412-Aircraft-related occupancies
412.2.2.1Stairways. Stairways in airport traffic control towers shall be in accordance with Section 1011. Exit stairways shall be smokeproof enclosures complying with one of the alternatives provided in Section 909.20. Where interior exit stairways and ramps are pressurized in accordance with Section 909.20.5, the smoke control pressurization system shall comply with the requirements specified in Section 909.6.3.

EXCEPTION:

Stairways in airport traffic control towers are not required to comply with Section 1011.12.

[F] 412.7.3 Means of egress. The means of egress from heliports, helipads and helistops shall comply with the provisions of Chapter 10. Landing areas located on buildings or structures shall have two or more exits or access to exits. For landing areas less than 60 feet in length or less than 2,000 square feet (186 m2) in area, the second means of egress is permitted to be a fire escape, alternating tread device or ladder leading to the floor below. On Group I-2 roofs with heliports or helipads and helistops, rooftop structures enclosing exit stair enclosures or elevator shafts shall be enclosed with fire barriers and opening protectives that match the rating of their respective shaft enclosures below.

Wash. Admin. Code § 51-50-0412

Adopted by WSR 16-03-064, Filed 1/19/2016, effective 7/1/2016
Amended by WSR 20-01-090, Filed 12/12/2019, effective 7/1/2020
Amended by WSR 21-06-035, Filed 2/23/2021, effective 3/26/2021
Amended by WSR 22-13-094, Filed 6/14/2022, effective 7/1/2023
Amended by WSR 23-23-102, Filed 11/15/2023, effective 3/16/2024

Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency and appear in the Register pursuant to the requirements of RCW 34.08.040.