Fredericksburg city, VA Roof Snow Load - 20 psf
What ASCE 7 says about snow load in Fredericksburg city
That's Fredericksburg city's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. 17.5 psf is what the ground-load formula alone gives; Fredericksburg city's 20 psf low-slope minimum (§7.3.4) beats it, so that figure is the one that governs on flat and low-pitch roofs.
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.
Already snow on the roof in Fredericksburg city?
Fredericksburg city in numbers
- Design roof snow load20 psf
- Ground snow load, ASCE 7 map25 psf
- National rank#861 of 2,758
- Virginia rank#41 of 110
- Population29,992
- Annual snowfall, NOAA normal11.3 in.
- FIPS51630
Where Fredericksburg city's figure sits nationally
Out of 2,758 rated US counties, Fredericksburg city sits at #861, the top 31% nationally - #41 of 110 within Virginia. 18.3 psf is Virginia's typical county figure - Fredericksburg city beats it by 1.7 psf.
Near 38.2993°N 77.4867°W, FIPS 51630: Fredericksburg city counts 29,992 residents and a 25 psf map value, which the code's own factors turn into 20 psf.
How much it actually snows in Fredericksburg city
Most winters bring Fredericksburg city roughly 11.3 in. of snow - NOAA's normal at FREDERICKSBURG SEWAGE, VA US, 2.1 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Fredericksburg city'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 Fredericksburg city's county-wide figure. (How this figure is calculated.)