Somerset County, PA Roof Snow Load - Case Study Area
Somerset County, PA: no map figure, on purpose
ASCE 7's own snow load map has no single figure for Somerset County: 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 42111, population 72,134. 386 US counties get this same case-study treatment; Somerset County is one of them.
Somerset County at a glance
- Population72,134
- Annual snowfall, NOAA normal96.2 in.
- FIPS42111
Somerset County's snowfall, most winters
96.2 in. a year: that's Somerset County's NOAA 1991-2020 snowfall normal, measured at SOMERSET, PA US (3.1 mi away). See the density guide.
Before you rely on Somerset County's number
Treat the Somerset 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. (How this figure is calculated.)