Traill County, ND Roof Snow Load - 35 psf

How much snow is too much for a roof in Traill County, ND?

Picture it, not just weigh it: 77 in. if it's fresh powder, 28 in. once it settles, or a mere 7 in. if it's ice. A load this size is a serious structural matter; pre-modern-code homes and low-slope or flat-roofed sections are the ones most worth an inspection.

Traill County, ND: quick facts

• Design roof snow load35 psf
• Ground snow load, ASCE 7 map50 psf
• National rank#187 of 2,758
• North Dakota rank#10 of 49
• Population7,989
• Annual snowfall, NOAA normal34.7 in.
• FIPS38097

How Traill County compares

35 psf ranks #187 of 2,758 US counties with a mapped snow load (top 7%) - and #10 of 49 in North Dakota. North Dakota counties average 29.4 psf; Traill County runs 5.6 psf higher than that.

Population 7,989 (FIPS 38097), roughly 47.4463°N 97.1646°W. The 50 psf ground snow load ASCE 7-22 maps here becomes 35 psf once the code's own design factors are applied.

Typical snowfall in Traill County, ND

NOAA's 30-year normal for Traill County: 34.7 in. of snow a year, from the COLGATE, ND US station. 27 mi is a real gap between Traill County and its nearest reporting station, so local snowfall can diverge from this figure, especially near elevation changes. (fresh vs. packed vs. ice explains why.)

What this Traill 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.

Traill 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. Details: the calculation guide.