Lincoln County, TN Roof Snow Load - 10 psf
Lincoln County, TN roof snow load, translated
A typical heated home in Lincoln 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 Lincoln 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.
Lincoln County at a glance
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,815 of 2,758
- Tennessee rank#45 of 95
- Population36,751
- Annual snowfall, NOAA normal1.1 in.
- FIPS47103
Where Lincoln County ranks
#45 of 95 Tennessee counties by design load, top 66% of 2,758 nationally - that's Lincoln County's spot. Tennessee counties average 10.3 psf; Lincoln County runs 0.3 psf lower than that.
FIPS 47103, population 36,751, centered near 35.1428°N 86.5934°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.
Lincoln County: average annual snowfall
Lincoln County sees about 1.1 in. of snow most winters, per the FAYETTEVILLE WTP, TN US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Lincoln 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.)