Grant County, WA Roof Snow Load - Case Study Area
What "Case Study" means for Grant County
Grant 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.
Grant County, FIPS 53025, is home to 104,717 people - one of 386 US counties ASCE 7 itself routes around a map figure for.
Grant County in numbers
- Population104,717
- Annual snowfall, NOAA normal13.9 in.
- FIPS53025
How much it actually snows in Grant County
Most winters bring Grant County roughly 13.9 in. of snow - NOAA's normal at ODESSA, WA US, 37.1 mi off. 37.1 mi is a real gap between Grant County and its nearest reporting station, so local snowfall can diverge from this figure, especially near elevation changes. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Grant 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 Grant County's county-wide figure. (How this figure is calculated.)