Sevier County, UT Roof Snow Load - 15 psf
Sevier County, UT roof snow load, translated
A typical heated home in Sevier County is designed to carry 15 pounds per square foot of snow on its roof, per ASCE 7-22. 10.5 psf is what the ground-load formula alone gives; Sevier County's 15 psf low-slope minimum (§7.3.4) beats it, so that figure is the one that governs on flat and low-pitch roofs.
On a roof that means 33 in. of fresh snow, 12 in. once it packs down, or 3 in. of solid ice - three very different piles for the same load. 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.
Sevier County in numbers
- Design roof snow load15 psf
- Ground snow load, ASCE 7 map15 psf
- National rank#1,449 of 2,758
- Utah rank#4 of 10
- Population22,520
- Annual snowfall, NOAA normal69.3 in.
- FIPS49041
Where Sevier County ranks
#4 of 10 Utah counties by design load, top 53% of 2,758 nationally - that's Sevier County's spot. Utah counties average 16.6 psf; Sevier County runs 1.6 psf lower than that.
FIPS 49041, population 22,520, centered near 38.7468°N 111.8119°W. ASCE 7's underlying ground snow load here is 15 psf before the code's exposure and importance factors bring it to the 15 psf design figure above.
Sevier County: average annual snowfall
Sevier County sees about 69.3 in. of snow most winters, per the SALINA 24 E, UT US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Sevier 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. Details: the calculation guide.