SnowLoadCheck

Dade County, MO Roof Snow Load - 15 psf

What ASCE 7 says about snow load in Dade County

Moderate
15 psf

That's Dade County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. 10.5 psf is what the ground-load formula alone gives; Dade County's 15 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 33 in. of fresh powder, 12 in. once it settles and packs down, or just 3 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.

Already snow on the roof in Dade County?

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Dade County in numbers

Where Dade County's figure sits nationally

Out of 2,758 rated US counties, Dade County sits at #1,579, the top 57% nationally - #110 of 115 within Missouri. 18.6 psf is Missouri's typical county figure - Dade County comes in 3.6 psf under it.

Near 37.4323°N 93.8549°W, FIPS 29057: Dade County counts 7,622 residents and a 15 psf map value, which the code's own factors turn into 15 psf.

How much it actually snows in Dade County

Most winters bring Dade County roughly 12.8 in. of snow - NOAA's normal at LOCKWOOD, MO US, 5.9 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

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