SnowLoadCheck

Johnson County, TX Roof Snow Load - 5 psf

Johnson County, TX: your roof's ASCE 7 snow number, in plain English

Light
5 psf

Johnson County's roofs are built to hold 5 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. Flat and low-pitch roofs in Johnson 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.

In depth, not weight: that's roughly 11 inches of fresh, light snow, 4 inches of old, settled snow, or as little as 1 inches of solid ice - snow that heavy is rare here but ice from a freeze-thaw cycle adds up far faster than the depth suggests. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.

Johnson County, TX: quick facts

Johnson County by the numbers

Nationally that's #2,101 out of 2,758 rated counties, the top 76%; within Texas alone, Johnson County ranks #54 of 254. 5.4 psf is Texas's typical county figure - Johnson County comes in 0.4 psf under it.

Johnson County, FIPS 48251, is home to 210,547 people near 32.3797°N 97.3649°W. Its 5 psf ground snow load figure is the map value; 5 psf is what a roof is actually designed for.

Johnson County's snowfall, most winters

0 in. a year: that's Johnson County's NOAA 1991-2020 snowfall normal, measured at CRESSON, TX US (18 mi away). See the density guide.

Before you rely on Johnson County's number

Treat the Johnson County figure as a starting point, not a final answer: it assumes standard occupancy, a heated structure and a moderately sheltered site, per ASCE 7-22's own defaults. Exposed terrain, an unheated building or a steeper roof all shift the real number.

For a real application, skip the county number and go straight to the ASCE 7 Hazard Tool - enter your coordinates and it returns a site-specific figure a plan reviewer will recognize. See the methodology guide.