San Bernardino County, CA Roof Snow Load - 0 psf
San Bernardino County, CA roof snow load, translated
A typical heated home in San Bernardino 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.
San Bernardino County, CA: quick facts
- Design roof snow load0 psf
- Ground snow load, ASCE 7 map0 psf
- National rank#2,479 of 2,758
- California rank#10 of 41
- Population2,214,281
- Annual snowfall, NOAA normal0 in.
- FIPS06071
Where San Bernardino County ranks
#10 of 41 California counties by design load, top 90% of 2,758 nationally - that's San Bernardino County's spot. California counties average 1.1 psf; San Bernardino County runs 1.1 psf lower than that.
FIPS 06071, population 2,214,281, centered near 34.8567°N 116.1816°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.
San Bernardino County: average annual snowfall
San Bernardino County sees about 0 in. of snow most winters, per the BAKER, CA US station's 1991-2020 NOAA normal. 29.7 mi is a real gap between San Bernardino County and its nearest reporting station, so local snowfall can diverge from this figure, especially near elevation changes. See the density guide.
Read this before you use San Bernardino 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.