SnowLoadCheck

Greenville County, SC Roof Snow Load - 10 psf

Greenville County, SC roof snow load, translated

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10 psf

A typical heated home in Greenville County is designed to carry 10 pounds per square foot of snow on its roof, per ASCE 7-22. Flat and low-pitch roofs in Greenville 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.

On a roof that means 22 in. of fresh snow, 8 in. once it packs down, or 2 in. of solid ice - three very different piles for the same load. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.

Already snow on the roof in Greenville County?

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Greenville County, SC: quick facts

Where Greenville County ranks

#1 of 46 South Carolina counties by design load, top 60% of 2,758 nationally - that's Greenville County's spot. That's 1.2 psf above South Carolina's own county-average design load of 8.8 psf.

FIPS 45045, population 570,745, centered near 34.8926°N 82.3721°W. ASCE 7's underlying ground snow load here is 10 psf before the code's exposure and importance factors bring it to the 10 psf design figure above.

Greenville County: average annual snowfall

Greenville County sees about 1.9 in. of snow most winters, per the TRAVELERS REST 2NE, SC US station's 1991-2020 NOAA normal. See the density guide.

Read this before you use Greenville County's figure

The figure above assumes the case ASCE 7-22 treats as typical: a heated, ordinary-occupancy home on a partially exposed site. Change any of those - exposure, heating, roof pitch, occupancy category - and the real design number moves.

A building permit needs the number at your exact address, not the county average - the free ASCE 7 Hazard Tool returns that from your coordinates in about a minute and produces a PDF a plan reviewer will accept. (How this figure is calculated.)