Lafayette Parish, LA Roof Snow Load - 0 psf
Lafayette Parish, LA roof snow load, translated
A typical heated home in Lafayette Parish 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.
Lafayette Parish at a glance
- Design roof snow load0 psf
- Ground snow load, ASCE 7 map0 psf
- National rank#2,539 of 2,758
- Louisiana rank#35 of 64
- Population254,241
- Annual snowfall, NOAA normal0 in.
- FIPS22055
Where Lafayette Parish ranks
#35 of 64 Louisiana counties by design load, top 92% of 2,758 nationally - that's Lafayette Parish's spot. 2.4 psf is Louisiana's typical county figure - Lafayette Parish comes in 2.4 psf under it.
FIPS 22055, population 254,241, centered near 30.2065°N 92.0642°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.
Lafayette Parish: average annual snowfall
Lafayette Parish sees about 0 in. of snow most winters, per the ST MARTINVILLE 3 SW, LA US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Lafayette Parish'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. See the methodology guide.