Lee County, SC Roof Snow Load - 10 psf
How much snow is too much for a roof in Lee County, SC?
10 psf: that's what ASCE 7-22 requires a typical heated home's roof in Lee County to carry. Flat and low-pitch roofs in Lee County are actually governed by ASCE 7's §7.3.4 minimum of 10 psf, not the 7 psf the ground-load formula alone would produce.
Picture it, not just weigh it: 22 in. if it's fresh powder, 8 in. once it settles, or a mere 2 in. if it's ice. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.
Lee County, SC: quick facts
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,944 of 2,758
- South Carolina rank#33 of 46
- Population15,958
- Annual snowfall, NOAA normal0.3 in.
- FIPS45061
How Lee County compares
10 psf ranks #1,944 of 2,758 US counties with a mapped snow load (top 70%) - and #33 of 46 in South Carolina. South Carolina counties average 8.8 psf; Lee County runs 1.2 psf higher than that.
Population 15,958 (FIPS 45061), roughly 34.1586°N 80.2512°W. The 10 psf ground snow load ASCE 7-22 maps here becomes 10 psf once the code's own design factors are applied.
Typical snowfall in Lee County, SC
NOAA's 30-year normal for Lee County: 0.3 in. of snow a year, from the SUMTER, SC US station. (fresh vs. packed vs. ice explains why.)
What this Lee 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.
Lee 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.)