Appomattox County, VA Roof Snow Load - 20 psf
What ASCE 7 says about snow load in Appomattox County
That's Appomattox 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 17.5 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. This is a meaningful design load - most modern-code homes handle it fine, though an addition, a carport or a flat-roofed section can be a weak spot.
Appomattox County in numbers
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map25 psf
- National rank#993 of 2,758
- Virginia rank#59 of 110
- Population16,957
- Annual snowfall, NOAA normal10.9 in.
- FIPS51011
Where Appomattox County's figure sits nationally
Out of 2,758 rated US counties, Appomattox County sits at #993, the top 36% nationally - #59 of 110 within Virginia. That's 1.7 psf above Virginia's own county-average design load of 18.3 psf.
Near 37.3707°N 78.8109°W, FIPS 51011: Appomattox County counts 16,957 residents and a 25 psf map value, which the code's own factors turn into 20 psf.
How much it actually snows in Appomattox County
Most winters bring Appomattox County roughly 10.9 in. of snow - NOAA's normal at CONCORD 4 SSW, VA US, 10.2 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Appomattox 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 Appomattox County's county-wide figure. See the methodology guide.