Spartanburg County, SC Roof Snow Load - 10 psf
Spartanburg County, SC: your roof's ASCE 7 snow number, in plain English
Spartanburg County's roofs are built to hold 10 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. §7.3.4's low-slope minimum of 10 psf is what actually governs on a flat or low-pitch roof here - higher than the 7 psf the base ground-load formula gives.
In depth, not weight: that's roughly 22 inches of fresh, light snow, 8 inches of old, settled snow, or as little as 2 inches of solid ice - snow that heavy is rare here but ice from a freeze-thaw cycle adds up far faster than the depth suggests. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.
Spartanburg County at a glance
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,665 of 2,758
- South Carolina rank#4 of 46
- Population369,256
- Annual snowfall, NOAA normal0.8 in.
- FIPS45083
Spartanburg County by the numbers
Nationally that's #1,665 out of 2,758 rated counties, the top 60%; within South Carolina alone, Spartanburg County ranks #4 of 46. South Carolina counties average 8.8 psf; Spartanburg County runs 1.2 psf higher than that.
Spartanburg County, FIPS 45083, is home to 369,256 people near 34.932°N 81.9916°W. Its 10 psf ground snow load figure is the map value; 10 psf is what a roof is actually designed for.
Spartanburg County's snowfall, most winters
0.8 in. a year: that's Spartanburg County's NOAA 1991-2020 snowfall normal, measured at SPARTANBURG 3 SSE, SC US (4.7 mi away). See the density guide.
Before you rely on Spartanburg County's number
Treat the Spartanburg County figure as a starting point, not a final answer: it assumes standard occupancy, a heated structure and a moderately sheltered site, per ASCE 7-22's own defaults. Exposed terrain, an unheated building or a steeper roof all shift the real number.
For a real application, skip the county number and go straight to the ASCE 7 Hazard Tool - enter your coordinates and it returns a site-specific figure a plan reviewer will recognize. Details: the calculation guide.