SnowLoadCheck

Warren County, TN Roof Snow Load - 10 psf

Warren County, TN: your roof's ASCE 7 snow number, in plain English

Light
10 psf

Warren County's roofs are built to hold 10 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. 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.

In depth, not weight: that's roughly 22 inches of fresh, light snow, 8 inches of old, settled snow, or as little as 2 inches of solid ice - snow that heavy is rare here but ice from a freeze-thaw cycle adds up far faster than the depth suggests. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.

Warren County, TN: quick facts

Warren County by the numbers

Nationally that's #1,795 out of 2,758 rated counties, the top 65%; within Tennessee alone, Warren County ranks #40 of 95. That's 0.3 psf below Tennessee's own county-average design load of 10.3 psf.

Warren County, FIPS 47177, is home to 43,619 people near 35.6782°N 85.7773°W. Its 10 psf ground snow load figure is the map value; 10 psf is what a roof is actually designed for.

Warren County's snowfall, most winters

3.1 in. a year: that's Warren County's NOAA 1991-2020 snowfall normal, measured at SMITHVILLE 2 SE, TN US (18.2 mi away). See the density guide.

Before you rely on Warren County's number

Treat the Warren County figure as a starting point, not a final answer: it assumes standard occupancy, a heated structure and a moderately sheltered site, per ASCE 7-22's own defaults. Exposed terrain, an unheated building or a steeper roof all shift the real number.

For a real application, skip the county number and go straight to the ASCE 7 Hazard Tool - enter your coordinates and it returns a site-specific figure a plan reviewer will recognize. (How this figure is calculated.)