SnowLoadCheck

Colleton County, SC Roof Snow Load - 5 psf

What ASCE 7 says about snow load in Colleton County

Light
5 psf

That's Colleton County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 5 psf - higher than the 3.5 psf the ground-load formula alone would give, and the code says use the larger one.

Converted to something you can actually eyeball on a roof: about 11 in. of fresh powder, 4 in. once it settles and packs down, or just 1 in. if it's turned to ice. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.

Colleton County at a glance

Where Colleton County's figure sits nationally

Out of 2,758 rated US counties, Colleton County sits at #2,209, the top 80% nationally - #41 of 46 within South Carolina. South Carolina counties average 8.8 psf; Colleton County runs 3.8 psf lower than that.

Near 32.8494°N 80.6564°W, FIPS 45029: Colleton County counts 39,259 residents and a 5 psf map value, which the code's own factors turn into 5 psf.

How much it actually snows in Colleton County

Most winters bring Colleton County roughly 0 in. of snow - NOAA's normal at WALTERBORO 1 SW, SC US, 2.7 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

Colleton 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 Colleton County's county-wide figure. (How this figure is calculated.)