Mayes County, OK Roof Snow Load - 10 psf
Mayes County, OK: your roof's ASCE 7 snow number, in plain English
Mayes 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. Standard residential construction handles a load this size without extra bracing; it is a modest addition on top of ordinary roof loading.
Mayes County, OK: quick facts
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,806 of 2,758
- Oklahoma rank#41 of 77
- Population40,144
- Annual snowfall, NOAA normal7.5 in.
- FIPS40097
Mayes County by the numbers
Nationally that's #1,806 out of 2,758 rated counties, the top 65%; within Oklahoma alone, Mayes County ranks #41 of 77. That's 1 psf below Oklahoma's own county-average design load of 11 psf.
Mayes County, FIPS 40097, is home to 40,144 people near 36.3038°N 95.2356°W. Its 10 psf ground snow load figure is the map value; 10 psf is what a roof is actually designed for.
Mayes County's snowfall, most winters
7.5 in. a year: that's Mayes County's NOAA 1991-2020 snowfall normal, measured at PRYOR, OK US (5.3 mi away). See the density guide.
Before you rely on Mayes County's number
Treat the Mayes 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. Details: the calculation guide.