Crook County, WY Roof Snow Load - 20 psf
How much snow is too much for a roof in Crook County, WY?
20 psf: that's what ASCE 7-22 requires a typical heated home's roof in Crook County to carry. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 20 psf - higher than the 17.5 psf the ground-load formula alone would give, and the code says use the larger one.
Picture it, not just weigh it: 44 in. if it's fresh powder, 16 in. once it settles, or a mere 4 in. if it's ice. This is a meaningful design load - most modern-code homes handle it fine, though an addition, a carport or a flat-roofed section can be a weak spot.
Crook County in numbers
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map25 psf
- National rank#1,154 of 2,758
- Wyoming rank#8 of 18
- Population7,775
- Annual snowfall, NOAA normal49.2 in.
- FIPS56011
How Crook County compares
20 psf ranks #1,154 of 2,758 US counties with a mapped snow load (top 42%) - and #8 of 18 in Wyoming. Wyoming counties average 17.5 psf; Crook County runs 2.5 psf higher than that.
Population 7,775 (FIPS 56011), roughly 44.5893°N 104.5673°W. The 25 psf ground snow load ASCE 7-22 maps here becomes 20 psf once the code's own design factors are applied.
Typical snowfall in Crook County, WY
NOAA's 30-year normal for Crook County: 49.2 in. of snow a year, from the HULETT, WY US station. (fresh vs. packed vs. ice explains why.)
What this Crook County 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.
Crook County'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. (How this figure is calculated.)