SnowLoadCheck

Robertson County, TN Roof Snow Load - 10 psf

What ASCE 7 says about snow load in Robertson County

Light
10 psf

That's Robertson 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 psf is what the ground-load formula alone gives; Robertson County's 10 psf low-slope minimum (§7.3.4) beats it, so that figure is the one that governs on flat and low-pitch roofs.

Converted to something you can actually eyeball on a roof: about 22 in. of fresh powder, 8 in. once it settles and packs down, or just 2 in. if it's turned to ice. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.

Robertson County, TN: quick facts

Where Robertson County's figure sits nationally

Out of 2,758 rated US counties, Robertson County sits at #1,732, the top 63% nationally - #22 of 95 within Tennessee. Tennessee counties average 10.3 psf; Robertson County runs 0.3 psf lower than that.

Near 36.5244°N 86.8726°W, FIPS 47147: Robertson County counts 78,459 residents and a 10 psf map value, which the code's own factors turn into 10 psf.

How much it actually snows in Robertson County

Most winters bring Robertson County roughly 5.8 in. of snow - NOAA's normal at SPRINGFIELD EXP STN, TN US, 4.1 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

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