SnowLoadCheck

Coal County, OK Roof Snow Load - 10 psf

Coal County, OK: your roof's ASCE 7 snow number, in plain English

Light
10 psf

Coal County's roofs are built to hold 10 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. Flat and low-pitch roofs in Coal 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.

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. Standard residential construction handles a load this size without extra bracing; it is a modest addition on top of ordinary roof loading.

Coal County in numbers

Coal County by the numbers

Nationally that's #2,044 out of 2,758 rated counties, the top 74%; within Oklahoma alone, Coal County ranks #70 of 77. Oklahoma counties average 11 psf; Coal County runs 1 psf lower than that.

Coal County, FIPS 40029, is home to 5,414 people near 34.5829°N 96.288°W. Its 10 psf ground snow load figure is the map value; 10 psf is what a roof is actually designed for.

Coal County's snowfall, most winters

3.2 in. a year: that's Coal County's NOAA 1991-2020 snowfall normal, measured at CENTRAHOMA 2 ESE, OK US (1.9 mi away). See the density guide.

Before you rely on Coal County's number

Treat the Coal 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.)