SnowLoadCheck

Norfolk city, VA Roof Snow Load - 10 psf

Norfolk city, VA: your roof's ASCE 7 snow number, in plain English

Light
10 psf

Norfolk city's roofs are built to hold 10 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. Flat and low-pitch roofs in Norfolk city are actually governed by ASCE 7's §7.3.4 minimum of 10 psf, not the 7 psf the ground-load formula alone would produce.

In depth, not weight: that's roughly 22 inches of fresh, light snow, 8 inches of old, settled snow, or as little as 2 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.

Norfolk city at a glance

Norfolk city by the numbers

Nationally that's #1,679 out of 2,758 rated counties, the top 61%; within Virginia alone, Norfolk city ranks #104 of 110. 18.3 psf is Virginia's typical county figure - Norfolk city comes in 8.3 psf under it.

Norfolk city, FIPS 51710, is home to 231,105 people near 36.923°N 76.2446°W. Its 10 psf ground snow load figure is the map value; 10 psf is what a roof is actually designed for.

Norfolk city's snowfall, most winters

6.2 in. a year: that's Norfolk city's NOAA 1991-2020 snowfall normal, measured at NORFOLK INTL AP, VA US (3.2 mi away). See the density guide.

Before you rely on Norfolk city's number

Treat the Norfolk city 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. (How this figure is calculated.)