Owen County, IN Roof Snow Load - 20 psf
How much snow is too much for a roof in Owen County, IN?
20 psf: that's what ASCE 7-22 requires a typical heated home's roof in Owen County to carry. Flat and low-pitch roofs in Owen County are actually governed by ASCE 7's §7.3.4 minimum of 20 psf, not the 14 psf the ground-load formula alone would produce.
Picture it, not just weigh it: 44 in. if it's fresh powder, 16 in. once it settles, or a mere 4 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.
Owen County in numbers
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map20 psf
- National rank#935 of 2,758
- Indiana rank#57 of 89
- Population21,851
- Annual snowfall, NOAA normal15.8 in.
- FIPS18119
How Owen County compares
20 psf ranks #935 of 2,758 US counties with a mapped snow load (top 34%) - and #57 of 89 in Indiana. That's 0.7 psf above Indiana's own county-average design load of 19.3 psf.
Population 21,851 (FIPS 18119), roughly 39.3173°N 86.8388°W. The 20 psf ground snow load ASCE 7-22 maps here becomes 20 psf once the code's own design factors are applied.
Typical snowfall in Owen County, IN
NOAA's 30-year normal for Owen County: 15.8 in. of snow a year, from the SPENCER, IN US station. (fresh vs. packed vs. ice explains why.)
What this Owen 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.
Owen 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.