Bristol Bay Borough, AK Roof Snow Load - Case Study Area
Why doesn't Bristol Bay Borough have a snow load number?
Bristol Bay Borough 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.
Bristol Bay Borough, FIPS 02060, is home to 884 people - one of 386 US counties ASCE 7 itself routes around a map figure for.
Bristol Bay Borough in numbers
- Population884
- Annual snowfall, NOAA normal47.4 in.
- FIPS02060
Typical snowfall in Bristol Bay Borough, AK
NOAA's 30-year normal for Bristol Bay Borough: 47.4 in. of snow a year, from the KING SALMON, AK US station. (fresh vs. packed vs. ice explains why.)
What this Bristol Bay Borough figure assumes
This is a county-level reference figure for a typical heated home built to Risk Category II (ordinary residential), on a partially exposed lot - the assumptions ASCE 7-22 itself treats as the default case. A steeper roof, a fully exposed hilltop lot, an unheated structure, or a higher risk category all change the actual number.
Bristol Bay Borough's permit office wants an address-specific figure, not this county average - the ASCE 7 Hazard Tool is free, takes under a minute, and outputs a PDF most reviewers accept. See the methodology guide.