SnowLoadCheck

Clark County, OH Roof Snow Load - 20 psf

What ASCE 7 says about snow load in Clark County

Moderate
20 psf

That's Clark County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. §7.3.4's low-slope minimum of 20 psf is what actually governs on a flat or low-pitch roof here - higher than the 14 psf the base ground-load formula gives.

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. This is a meaningful design load - most modern-code homes handle it fine, though an addition, a carport or a flat-roofed section can be a weak spot.

Snow on Clark County's roofs right now?

in. of

Clark County in numbers

Where Clark County's figure sits nationally

Out of 2,758 rated US counties, Clark County sits at #624, the top 23% nationally - #20 of 86 within Ohio. Clark County's figure lands almost exactly on Ohio's own county-average of 20 psf.

Near 39.917°N 83.7837°W, FIPS 39023: Clark County counts 134,985 residents and a 20 psf map value, which the code's own factors turn into 20 psf.

How much it actually snows in Clark County

Most winters bring Clark County roughly 18.7 in. of snow - NOAA's normal at NEW CARLISLE, OH US, 13.2 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

Clark 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 Clark County's county-wide figure. (How this figure is calculated.)