Emmons County, ND Roof Snow Load - 35 psf
Emmons County, ND roof snow load, translated
A typical heated home in Emmons 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.
Emmons County in numbers
- Design roof snow load35 psf
- Ground snow load, ASCE 7 map50 psf
- National rank#209 of 2,758
- North Dakota rank#13 of 49
- Population3,209
- Annual snowfall, NOAA normal44.7 in.
- FIPS38029
Where Emmons County ranks
#13 of 49 North Dakota counties by design load, top 8% of 2,758 nationally - that's Emmons County's spot. 29.4 psf is North Dakota's typical county figure - Emmons County beats it by 5.6 psf.
FIPS 38029, population 3,209, centered near 46.2843°N 100.2378°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.
Emmons County: average annual snowfall
Emmons County sees about 44.7 in. of snow most winters, per the HAZELTON 4NW, ND US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Emmons 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.)