SnowLoadCheck

Halifax County, NC Roof Snow Load - 15 psf

How much snow is too much for a roof in Halifax County, NC?

Moderate
15 psf

15 psf: that's what ASCE 7-22 requires a typical heated home's roof in Halifax County to carry. §7.3.4's low-slope minimum of 15 psf is what actually governs on a flat or low-pitch roof here - higher than the 10.5 psf the base ground-load formula gives.

Picture it, not just weigh it: 33 in. if it's fresh powder, 12 in. once it settles, or a mere 3 in. if it's ice. This is a meaningful design load - most modern-code homes handle it fine, though an addition, a carport or a flat-roofed section can be a weak spot.

Already snow on the roof in Halifax County?

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Halifax County in numbers

How Halifax County compares

15 psf ranks #1,383 of 2,758 US counties with a mapped snow load (top 50%) - and #34 of 100 in North Carolina. That's 2.1 psf above North Carolina's own county-average design load of 12.9 psf.

Population 46,992 (FIPS 37083), roughly 36.2514°N 77.6448°W. The 15 psf ground snow load ASCE 7-22 maps here becomes 15 psf once the code's own design factors are applied.

Typical snowfall in Halifax County, NC

NOAA's 30-year normal for Halifax County: 3.2 in. of snow a year, from the ENFIELD, NC US station. (fresh vs. packed vs. ice explains why.)

What this Halifax County figure assumes

This is a county-level reference figure for a typical heated home built to Risk Category II (ordinary residential), on a partially exposed lot - the assumptions ASCE 7-22 itself treats as the default case. A steeper roof, a fully exposed hilltop lot, an unheated structure, or a higher risk category all change the actual number.

Halifax County's permit office wants an address-specific figure, not this county average - the ASCE 7 Hazard Tool is free, takes under a minute, and outputs a PDF most reviewers accept. (How this figure is calculated.)