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 51-50-1807 - Section 1807-Foundation walls, retaining walls and embedded posts and poles

Wash. Admin. Code § 51-50-1807

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Current through Register Vol. 25-01, January 1, 2025
Section 51-50-1807 - Section 1807-Foundation walls, retaining walls and embedded posts and poles

1807.2.2 Design lateral soil loads. Retaining walls shall be designed for the lateral soil loads set forth in Section 1610. For structures assigned to Seismic Design Category D, E, or F, the design of retaining walls supporting more than 6 feet (1829 mm) of backfill height measured to the bottom of the footing shall incorporate the additional seismic lateral earth pressure in accordance with the geotechnical investigation where required in Section 1803.2.

Wash. Admin. Code § 51-50-1807

Adopted by WSR 20-01-090, Filed 12/12/2019, effective 7/1/2020