Wash. Rev. Code § 70.86.030
Current through the 2024 Regular Session
Structural frames, exterior walls, and all appendages of the buildings described in RCW 70.86.020, whose collapse will endanger life and property shall be designed and constructed to withstand horizontal forces from any direction of not less than the following fractions of the weight of the structure and its parts acting at the centers of gravity:
Western Washington 0.05.
RCW 70.86.030