Pulaski County, IL Roof Snow Load - 15 psf
How much snow is too much for a roof in Pulaski County, IL?
15 psf: that's what ASCE 7-22 requires a typical heated home's roof in Pulaski County to carry. The physics-based figure alone would be 10.5 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 15 psf for flat and low-pitch roofs here, which is the number that actually governs.
Picture it, not just weigh it: 33 in. if it's fresh powder, 12 in. once it settles, or a mere 3 in. if it's 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.
Pulaski County, IL: quick facts
- Design roof snow load15 psf
- Ground snow load, ASCE 7 map15 psf
- National rank#1,608 of 2,758
- Illinois rank#98 of 102
- Population4,879
- Annual snowfall, NOAA normal7.2 in.
- FIPS17153
How Pulaski County compares
15 psf ranks #1,608 of 2,758 US counties with a mapped snow load (top 58%) - and #98 of 102 in Illinois. That's 4.3 psf below Illinois's own county-average design load of 19.3 psf.
Population 4,879 (FIPS 17153), roughly 37.2156°N 89.1278°W. The 15 psf ground snow load ASCE 7-22 maps here becomes 15 psf once the code's own design factors are applied.
Typical snowfall in Pulaski County, IL
NOAA's 30-year normal for Pulaski County: 7.2 in. of snow a year, from the GRAND CHAIN DAM 53, IL US station. (fresh vs. packed vs. ice explains why.)
What this Pulaski 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.
Pulaski 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. See the methodology guide.