Gentry County, MO Roof Snow Load - 20 psf
Gentry County, MO roof snow load, translated
A typical heated home in Gentry County is designed to carry 20 pounds per square foot of snow on its roof, per ASCE 7-22. 14 psf is what the ground-load formula alone gives; Gentry County's 20 psf low-slope minimum (§7.3.4) beats it, so that figure is the one that governs on flat and low-pitch roofs.
On a roof that means 44 in. of fresh snow, 16 in. once it packs down, or 4 in. of solid ice - three very different piles for the same load. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.
Gentry County, MO: quick facts
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map20 psf
- National rank#1,188 of 2,758
- Missouri rank#74 of 115
- Population6,298
- Annual snowfall, NOAA normal19.4 in.
- FIPS29075
Where Gentry County ranks
#74 of 115 Missouri counties by design load, top 43% of 2,758 nationally - that's Gentry County's spot. 18.6 psf is Missouri's typical county figure - Gentry County beats it by 1.4 psf.
FIPS 29075, population 6,298, centered near 40.2081°N 94.4053°W. ASCE 7's underlying ground snow load here is 20 psf before the code's exposure and importance factors bring it to the 20 psf design figure above.
Gentry County: average annual snowfall
Gentry County sees about 19.4 in. of snow most winters, per the CONCEPTION, MO US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Gentry 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. Details: the calculation guide.