Shawano County, WI Roof Snow Load - 35 psf
Shawano County, WI roof snow load, translated
A typical heated home in Shawano 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 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.
Shawano County at a glance
- Design roof snow load35 psf
- Ground snow load, ASCE 7 map50 psf
- National rank#130 of 2,758
- Wisconsin rank#27 of 72
- Population41,299
- Annual snowfall, NOAA normal47.9 in.
- FIPS55115
Where Shawano County ranks
#27 of 72 Wisconsin counties by design load, top 5% of 2,758 nationally - that's Shawano County's spot. That's 4.1 psf above Wisconsin's own county-average design load of 30.9 psf.
FIPS 55115, population 41,299, centered near 44.7896°N 88.7558°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.
Shawano County: average annual snowfall
Shawano County sees about 47.9 in. of snow most winters, per the SHAWANO 2SSW, WI US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Shawano 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.