Meigs County, TN Roof Snow Load - 10 psf
Meigs County, TN roof snow load, translated
A typical heated home in Meigs 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 Meigs 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. Standard residential construction handles a load this size without extra bracing; it is a modest addition on top of ordinary roof loading.
Meigs County at a glance
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,960 of 2,758
- Tennessee rank#83 of 95
- Population13,937
- Annual snowfall, NOAA normal1.6 in.
- FIPS47121
Where Meigs County ranks
#83 of 95 Tennessee counties by design load, top 71% of 2,758 nationally - that's Meigs County's spot. 10.3 psf is Tennessee's typical county figure - Meigs County comes in 0.3 psf under it.
FIPS 47121, population 13,937, centered near 35.5122°N 84.8161°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.
Meigs County: average annual snowfall
Meigs County sees about 1.6 in. of snow most winters, per the DAYTON 2SE, TN US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Meigs 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.