SnowLoadCheck

Cumberland County, NJ Roof Snow Load - 20 psf

Cumberland County, NJ: your roof's ASCE 7 snow number, in plain English

Moderate
20 psf

Cumberland County's roofs are built to hold 20 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. The physics-based figure alone would be 14 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 20 psf for flat and low-pitch roofs here, which is the number that actually governs.

In depth, not weight: that's roughly 44 inches of fresh, light snow, 16 inches of old, settled snow, or as little as 4 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. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.

Cumberland County, NJ: quick facts

Cumberland County by the numbers

Nationally that's #617 out of 2,758 rated counties, the top 22%; within New Jersey alone, Cumberland County ranks #15 of 17. That's 0.1 psf below New Jersey's own county-average design load of 20.1 psf.

Cumberland County, FIPS 34011, is home to 155,678 people near 39.3284°N 75.1216°W. Its 20 psf ground snow load figure is the map value; 20 psf is what a roof is actually designed for.

Cumberland County's snowfall, most winters

11.8 in. a year: that's Cumberland County's NOAA 1991-2020 snowfall normal, measured at SEABROOK FARMS, NJ US (12.2 mi away). See the density guide.

Before you rely on Cumberland County's number

Treat the Cumberland 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. Details: the calculation guide.