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Development Services Division 1055 South Grady Way – Renton, WA 98057 Phone: 425-430-7200 www.rentonwa.gov
STRUCTURAL DESIGN CRITERIA
SNOW LOAD - 25 PSF
Roof - 25 psf. uniform load. Note: uniform snow load does not require design for snow
drift.
GROUND SNOW LOAD - 20 PSF
ULTIMATE DESIGN WIND SPEED VULT - 110mph.
FOR RISK CATEGORY II BUILDINGS AND OTHER STRUCTURES
Exposure factor - B applicable in most areas
Exposure factor - C wind over open water for one mile.
SEISMIC DESIGN CATEGORY - D
Frost Depth one story 12”, two story 18”, three story 24”