Crawford County, MI Roof Snow Load - 35 psf
How much snow is too much for a roof in Crawford County, MI?
35 psf: that's what ASCE 7-22 requires a typical heated home's roof in Crawford County to carry.
Picture it, not just weigh it: 77 in. if it's fresh powder, 28 in. once it settles, or a mere 7 in. if it's ice. A serious structural load. Homes built before modern snow-load provisions, or with low-slope/flat roof sections, are the ones most worth having checked.
Already snow on the roof in Crawford County?
Crawford County in numbers
- Design roof snow load35 psf
- Ground snow load, ASCE 7 map50 psf
- National rank#168 of 2,758
- Michigan rank#28 of 70
- Population13,599
- Annual snowfall, NOAA normal88.3 in.
- FIPS26039
How Crawford County compares
35 psf ranks #168 of 2,758 US counties with a mapped snow load (top 6%) - and #28 of 70 in Michigan. That's 3.3 psf above Michigan's own county-average design load of 31.7 psf.
Population 13,599 (FIPS 26039), roughly 44.6802°N 84.6113°W. The 50 psf ground snow load ASCE 7-22 maps here becomes 35 psf once the code's own design factors are applied.
Typical snowfall in Crawford County, MI
NOAA's 30-year normal for Crawford County: 88.3 in. of snow a year, from the GRAYLING, MI US station. (fresh vs. packed vs. ice explains why.)
What this Crawford 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.
Crawford 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. See the methodology guide.