SnowLoadCheck

Humphreys County, TN Roof Snow Load - 10 psf

Humphreys County, TN roof snow load, translated

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10 psf

A typical heated home in Humphreys County is designed to carry 10 pounds per square foot of snow on its roof, per ASCE 7-22. The physics-based figure alone would be 7 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 10 psf for flat and low-pitch roofs here, which is the number that actually governs.

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.

Got real snow on a Humphreys County roof right now?

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Humphreys County at a glance

Where Humphreys County ranks

#71 of 95 Tennessee counties by design load, top 69% of 2,758 nationally - that's Humphreys County's spot. 10.3 psf is Tennessee's typical county figure - Humphreys County comes in 0.3 psf under it.

FIPS 47085, population 19,554, centered near 36.0408°N 87.7905°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.

Humphreys County: average annual snowfall

Humphreys County sees about 2.7 in. of snow most winters, per the CAMDEN, TN US station's 1991-2020 NOAA normal. See the density guide.

Read this before you use Humphreys 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.