Gallatin County, KY Roof Snow Load - 20 psf
How much snow is too much for a roof in Gallatin County, KY?
20 psf: that's what ASCE 7-22 requires a typical heated home's roof in Gallatin 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 14 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. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.
Gallatin County at a glance
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map20 psf
- National rank#1,129 of 2,758
- Kentucky rank#14 of 120
- Population8,805
- Annual snowfall, NOAA normal6.5 in.
- FIPS21077
How Gallatin County compares
20 psf ranks #1,129 of 2,758 US counties with a mapped snow load (top 41%) - and #14 of 120 in Kentucky. That's 4.3 psf above Kentucky's own county-average design load of 15.7 psf.
Population 8,805 (FIPS 21077), roughly 38.7557°N 84.8651°W. The 20 psf ground snow load ASCE 7-22 maps here becomes 20 psf once the code's own design factors are applied.
Typical snowfall in Gallatin County, KY
NOAA's 30-year normal for Gallatin County: 6.5 in. of snow a year, from the WARSAW MARKLAND DAM, KY US station. (fresh vs. packed vs. ice explains why.)
What this Gallatin 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.
Gallatin 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. Details: the calculation guide.