Asotin County, WA Roof Snow Load - Case Study Area
What "Case Study" means for Asotin County
Asotin County sits in the mountain-west terrain where ASCE 7-22 §7.2 itself declines to give a contour figure - elevation changes too fast over short distances there for one number per county to mean anything. The code requires a site-specific study for a building here, not a look-up.
Asotin County, FIPS 53003, is home to 22,523 people - one of 386 US counties ASCE 7 itself routes around a map figure for.
Asotin County in numbers
- Population22,523
- Annual snowfall, NOAA normal12.7 in.
- FIPS53003
How much it actually snows in Asotin County
Most winters bring Asotin County roughly 12.7 in. of snow - NOAA's normal at LEWISTON NEZ PERCE CO AP, ID US, 16.7 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Asotin County's number above is ASCE 7-22's default case, not a custom calculation: ordinary residential occupancy, heated, sited on ground that's neither fully sheltered nor fully exposed. Any one of those changing - pitch, exposure, heating, occupancy - moves the real figure.
Nothing here substitutes for an address-level number. Get one free, in about a minute, from the ASCE 7 Hazard Tool using your own coordinates rather than Asotin County's county-wide figure. Details: the calculation guide.