Richland County, OH Roof Snow Load - 20 psf
What ASCE 7 says about snow load in Richland County
That's Richland County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 20 psf - higher than the 14 psf the ground-load formula alone would give, and the code says use the larger one.
Converted to something you can actually eyeball on a roof: about 44 in. of fresh powder, 16 in. once it settles and packs down, or just 4 in. if it's turned to ice. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.
Richland County at a glance
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map20 psf
- National rank#629 of 2,758
- Ohio rank#22 of 86
- Population124,853
- Annual snowfall, NOAA normal49.2 in.
- FIPS39139
Where Richland County's figure sits nationally
Out of 2,758 rated US counties, Richland County sits at #629, the top 23% nationally - #22 of 86 within Ohio. Richland County's figure lands almost exactly on Ohio's own county-average of 20 psf.
Near 40.7742°N 82.5428°W, FIPS 39139: Richland County counts 124,853 residents and a 20 psf map value, which the code's own factors turn into 20 psf.
How much it actually snows in Richland County
Most winters bring Richland County roughly 49.2 in. of snow - NOAA's normal at MANSFIELD LAHM MUNI AP, OH US, 3.4 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Richland 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 Richland County's county-wide figure. Details: the calculation guide.