SnowLoadCheck

Copiah County, MS Roof Snow Load - 5 psf

What ASCE 7 says about snow load in Copiah County

Light
5 psf

That's Copiah County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. Flat and low-pitch roofs in Copiah County are actually governed by ASCE 7's §7.3.4 minimum of 5 psf, not the 3.5 psf the ground-load formula alone would produce.

Converted to something you can actually eyeball on a roof: about 11 in. of fresh powder, 4 in. once it settles and packs down, or just 1 in. if it's turned to ice. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.

Already snow on the roof in Copiah County?

in. of

Copiah County at a glance

Where Copiah County's figure sits nationally

Out of 2,758 rated US counties, Copiah County sits at #2,247, the top 81% nationally - #48 of 82 within Mississippi. That's 1.5 psf below Mississippi's own county-average design load of 6.5 psf.

Near 31.8669°N 90.4488°W, FIPS 28029: Copiah County counts 27,536 residents and a 5 psf map value, which the code's own factors turn into 5 psf.

How much it actually snows in Copiah County

Most winters bring Copiah County roughly 0.1 in. of snow - NOAA's normal at HAZLEHURST 5 SW, MS US, 2.4 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

Copiah 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 Copiah County's county-wide figure. Details: the calculation guide.