SnowLoadCheck

Caswell County, NC Roof Snow Load - 20 psf

What ASCE 7 says about snow load in Caswell County

Moderate
20 psf

That's Caswell County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. The physics-based figure alone would be 14 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 20 psf for flat and low-pitch roofs here, which is the number that actually governs.

Converted to something you can actually eyeball on a roof: about 44 in. of fresh powder, 16 in. once it settles and packs down, or just 4 in. if it's turned to ice. Modern-code homes carry a load like this without issue; an older addition, a carport, or any flat-roofed section is where it is worth checking first.

Already snow on the roof in Caswell County?

in. of

Caswell County in numbers

Where Caswell County's figure sits nationally

Out of 2,758 rated US counties, Caswell County sits at #932, the top 34% nationally - #7 of 100 within North Carolina. 12.9 psf is North Carolina's typical county figure - Caswell County beats it by 7.1 psf.

Near 36.3943°N 79.3396°W, FIPS 37033: Caswell County counts 22,363 residents and a 20 psf map value, which the code's own factors turn into 20 psf.

How much it actually snows in Caswell County

Most winters bring Caswell County roughly 8.8 in. of snow - NOAA's normal at YANCEYVILLE 4 SE, NC US, 4.9 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

Caswell County's number above is ASCE 7-22's default case, not a custom calculation: ordinary residential occupancy, heated, sited on ground that's neither fully sheltered nor fully exposed. Any one of those changing - pitch, exposure, heating, occupancy - moves the real figure.

Nothing here substitutes for an address-level number. Get one free, in about a minute, from the ASCE 7 Hazard Tool using your own coordinates rather than Caswell County's county-wide figure. (How this figure is calculated.)