SnowLoadCheck

Lexington County, SC Roof Snow Load - 10 psf

What ASCE 7 says about snow load in Lexington County

Light
10 psf

That's Lexington County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. §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.

Converted to something you can actually eyeball on a roof: about 22 in. of fresh powder, 8 in. once it settles and packs down, or just 2 in. if it's turned to ice. Standard residential construction handles a load this size without extra bracing; it is a modest addition on top of ordinary roof loading.

Lexington County in numbers

Where Lexington County's figure sits nationally

Out of 2,758 rated US counties, Lexington County sits at #1,667, the top 60% nationally - #5 of 46 within South Carolina. South Carolina counties average 8.8 psf; Lexington County runs 1.2 psf higher than that.

Near 33.8923°N 81.273°W, FIPS 45063: Lexington County counts 313,774 residents and a 10 psf map value, which the code's own factors turn into 10 psf.

How much it actually snows in Lexington County

Most winters bring Lexington County roughly 1.1 in. of snow - NOAA's normal at BATESBURG, SC US, 15.3 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

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