Murray County, OK Roof Snow Load - 10 psf
How much snow is too much for a roof in Murray County, OK?
10 psf: that's what ASCE 7-22 requires a typical heated home's roof in Murray County to carry. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 10 psf - higher than the 7 psf the ground-load formula alone would give, and the code says use the larger one.
Picture it, not just weigh it: 22 in. if it's fresh powder, 8 in. once it settles, or a mere 2 in. if it's ice. Standard residential construction handles a load this size without extra bracing; it is a modest addition on top of ordinary roof loading.
Murray County, OK: quick facts
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,962 of 2,758
- Oklahoma rank#56 of 77
- Population13,754
- Annual snowfall, NOAA normal1.7 in.
- FIPS40099
How Murray County compares
10 psf ranks #1,962 of 2,758 US counties with a mapped snow load (top 71%) - and #56 of 77 in Oklahoma. 11 psf is Oklahoma's typical county figure - Murray County comes in 1 psf under it.
Population 13,754 (FIPS 40099), roughly 34.4858°N 97.0716°W. The 10 psf ground snow load ASCE 7-22 maps here becomes 10 psf once the code's own design factors are applied.
Typical snowfall in Murray County, OK
NOAA's 30-year normal for Murray County: 1.7 in. of snow a year, from the CHICKASAW NRA, OK US station. (fresh vs. packed vs. ice explains why.)
What this Murray County figure assumes
This is a county-level reference figure for a typical heated home built to Risk Category II (ordinary residential), on a partially exposed lot - the assumptions ASCE 7-22 itself treats as the default case. A steeper roof, a fully exposed hilltop lot, an unheated structure, or a higher risk category all change the actual number.
Murray County's permit office wants an address-specific figure, not this county average - the ASCE 7 Hazard Tool is free, takes under a minute, and outputs a PDF most reviewers accept. (How this figure is calculated.)