Mobile County, AL Roof Snow Load - 0 psf
Mobile County, AL roof snow load, translated
A typical heated home in Mobile County is designed to carry 0 pounds per square foot of snow on its roof, per ASCE 7-22.
On a roof that means 0 in. of fresh snow, 0 in. once it packs down, or 0 in. of solid ice - three very different piles for the same load. Snow load is not a factor in roof design here at all; the ground snow load figure maps to zero.
Already snow on the roof in Mobile County?
Mobile County at a glance
- Design roof snow load0 psf
- Ground snow load, ASCE 7 map0 psf
- National rank#2,523 of 2,758
- Alabama rank#59 of 67
- Population412,339
- Annual snowfall, NOAA normal0 in.
- FIPS01097
Where Mobile County ranks
#59 of 67 Alabama counties by design load, top 91% of 2,758 nationally - that's Mobile County's spot. That's 5.6 psf below Alabama's own county-average design load of 5.6 psf.
FIPS 01097, population 412,339, centered near 30.6846°N 88.1966°W. ASCE 7's underlying ground snow load here is 0 psf before the code's exposure and importance factors bring it to the 0 psf design figure above.
Mobile County: average annual snowfall
Mobile County sees about 0 in. of snow most winters, per the CODEN, AL US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Mobile County's figure
The figure above assumes the case ASCE 7-22 treats as typical: a heated, ordinary-occupancy home on a partially exposed site. Change any of those - exposure, heating, roof pitch, occupancy category - and the real design number moves.
A building permit needs the number at your exact address, not the county average - the free ASCE 7 Hazard Tool returns that from your coordinates in about a minute and produces a PDF a plan reviewer will accept. Details: the calculation guide.