Edmunds County, SD Roof Snow Load - 35 psf
Edmunds County, SD roof snow load, translated
A typical heated home in Edmunds County is designed to carry 35 pounds per square foot of snow on its roof, per ASCE 7-22.
On a roof that means 77 in. of fresh snow, 28 in. once it packs down, or 7 in. of solid ice - three very different piles for the same load. A serious structural load. Homes built before modern snow-load provisions, or with low-slope/flat roof sections, are the ones most worth having checked.
Edmunds County in numbers
- Design roof snow load35 psf
- Ground snow load, ASCE 7 map50 psf
- National rank#205 of 2,758
- South Dakota rank#14 of 65
- Population4,027
- Annual snowfall, NOAA normal47 in.
- FIPS46045
Where Edmunds County ranks
#14 of 65 South Dakota counties by design load, top 7% of 2,758 nationally - that's Edmunds County's spot. 28.2 psf is South Dakota's typical county figure - Edmunds County beats it by 6.8 psf.
FIPS 46045, population 4,027, centered near 45.4117°N 99.2054°W. ASCE 7's underlying ground snow load here is 50 psf before the code's exposure and importance factors bring it to the 35 psf design figure above.
Edmunds County: average annual snowfall
Edmunds County sees about 47 in. of snow most winters, per the ROSCOE, SD US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Edmunds 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. (How this figure is calculated.)