Cumberland County, TN Roof Snow Load - 10 psf
Cumberland County, TN roof snow load, translated
A typical heated home in Cumberland County is designed to carry 10 pounds per square foot of snow on its roof, per ASCE 7-22. §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.
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. Standard residential construction handles a load this size without extra bracing; it is a modest addition on top of ordinary roof loading.
Cumberland County at a glance
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,749 of 2,758
- Tennessee rank#25 of 95
- Population65,618
- Annual snowfall, NOAA normal14.1 in.
- FIPS47035
Where Cumberland County ranks
#25 of 95 Tennessee counties by design load, top 63% of 2,758 nationally - that's Cumberland County's spot. Tennessee counties average 10.3 psf; Cumberland County runs 0.3 psf lower than that.
FIPS 47035, population 65,618, centered near 35.9524°N 84.9948°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.
Cumberland County: average annual snowfall
Cumberland County sees about 14.1 in. of snow most winters, per the CROSSVILLE ED & RESEARCH, TN US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Cumberland 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.