Roanoke city, VA Roof Snow Load - Case Study Area
Roanoke city, VA: no map figure, on purpose
ASCE 7's own snow load map has no single figure for Roanoke city: the terrain is complex enough that the code (§7.2) requires an elevation-specific study rather than a county-wide value. That is the map being accurate, not a data gap.
FIPS 51770, population 97,912. 386 US counties get this same case-study treatment; Roanoke city is one of them.
Roanoke city at a glance
- Population97,912
- Annual snowfall, NOAA normal18.4 in.
- FIPS51770
Roanoke city's snowfall, most winters
18.4 in. a year: that's Roanoke city's NOAA 1991-2020 snowfall normal, measured at LAFAYETTE 1 NE, VA US (13.5 mi away). See the density guide.
Before you rely on Roanoke city's number
Treat the Roanoke 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.)