Columbiana County, OH Roof Snow Load - 20 psf
How much snow is too much for a roof in Columbiana County, OH?
20 psf: that's what ASCE 7-22 requires a typical heated home's roof in Columbiana County to carry. §7.3.4's low-slope minimum of 20 psf is what actually governs on a flat or low-pitch roof here - higher than the 17.5 psf the base ground-load formula gives.
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.
Columbiana County in numbers
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map25 psf
- National rank#654 of 2,758
- Ohio rank#26 of 86
- Population99,823
- Annual snowfall, NOAA normal31.8 in.
- FIPS39029
How Columbiana County compares
20 psf ranks #654 of 2,758 US counties with a mapped snow load (top 24%) - and #26 of 86 in Ohio. Columbiana County's figure lands almost exactly on Ohio's own county-average of 20 psf.
Population 99,823 (FIPS 39029), roughly 40.7701°N 80.7785°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 Columbiana County, OH
NOAA's 30-year normal for Columbiana County: 31.8 in. of snow a year, from the LOUISVILLE, OH US station. (fresh vs. packed vs. ice explains why.)
What this Columbiana 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.
Columbiana 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.)