Tazewell County, VA Roof Snow Load - 20 psf
Tazewell County, VA roof snow load, translated
A typical heated home in Tazewell County is designed to carry 20 pounds per square foot of snow on its roof, per ASCE 7-22. 14 psf is what the ground-load formula alone gives; Tazewell County's 20 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 44 in. of fresh snow, 16 in. once it packs down, or 4 in. of solid ice - three very different piles for the same load. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.
Tazewell County in numbers
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map20 psf
- National rank#786 of 2,758
- Virginia rank#34 of 110
- Population38,875
- Annual snowfall, NOAA normal39.7 in.
- FIPS51185
Where Tazewell County ranks
#34 of 110 Virginia counties by design load, top 28% of 2,758 nationally - that's Tazewell County's spot. Virginia counties average 18.3 psf; Tazewell County runs 1.7 psf higher than that.
FIPS 51185, population 38,875, centered near 37.1254°N 81.5629°W. ASCE 7's underlying ground snow load here is 20 psf before the code's exposure and importance factors bring it to the 20 psf design figure above.
Tazewell County: average annual snowfall
Tazewell County sees about 39.7 in. of snow most winters, per the BLUEFIELD, WV US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Tazewell 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. See the methodology guide.