Ransom County, ND Roof Snow Load - 28 psf
What ASCE 7 says about snow load in Ransom County
That's Ransom County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from.
Converted to something you can actually eyeball on a roof: about 61.6 in. of fresh powder, 22.4 in. once it settles and packs down, or just 5.6 in. if it's turned to ice. Modern-code homes carry a load like this without issue; an older addition, a carport, or any flat-roofed section is where it is worth checking first.
Already snow on the roof in Ransom County?
Ransom County in numbers
- Design roof snow load28 psf
- Ground snow load, ASCE 7 map40 psf
- National rank#278 of 2,758
- North Dakota rank#20 of 49
- Population5,590
- Annual snowfall, NOAA normal46.7 in.
- FIPS38073
Where Ransom County's figure sits nationally
Out of 2,758 rated US counties, Ransom County sits at #278, the top 10% nationally - #20 of 49 within North Dakota. North Dakota counties average 29.4 psf; Ransom County runs 1.4 psf lower than that.
Near 46.4493°N 97.6476°W, FIPS 38073: Ransom County counts 5,590 residents and a 40 psf map value, which the code's own factors turn into 28 psf.
How much it actually snows in Ransom County
Most winters bring Ransom County roughly 46.7 in. of snow - NOAA's normal at LISBON, ND US, 2.2 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Ransom County's number above is ASCE 7-22's default case, not a custom calculation: ordinary residential occupancy, heated, sited on ground that's neither fully sheltered nor fully exposed. Any one of those changing - pitch, exposure, heating, occupancy - moves the real figure.
Nothing here substitutes for an address-level number. Get one free, in about a minute, from the ASCE 7 Hazard Tool using your own coordinates rather than Ransom County's county-wide figure. (How this figure is calculated.)