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Snow Drift Calculator

Ground Snow Load (pg)

psf

Exposure Factor (Ce)1.0

Thermal Factor (Ct)1.00

Importance Factor (Is)1.00

Step / Parapet Height

ft

Upper Roof Length (upwind fetch)

ft

Lower Roof Length

ft

Total Design Load at Drift Peak127.6 psf

Flat Roof Snow Load (pf)28.0 psf

Snow Density (γ)19.2 pcf

Balanced Snow Depth (hb)1.46 ft

Design Drift Height (hd)5.19 ft

Leeward Drift Height5.19 ft

Windward Drift Height2.86 ft

Drift Width (w)20.8 ft

Drift Surcharge (pd)99.6 psf