Petersburg Borough, AK Roof Snow Load - Case Study Area
Why doesn't Petersburg Borough have a snow load number?
ASCE 7's own snow load map has no single figure for Petersburg Borough: 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 02195, population 3,436. 386 US counties get this same case-study treatment; Petersburg Borough is one of them.
Petersburg Borough, AK: quick facts
- Population3,436
- Annual snowfall, NOAA normal85.6 in.
- FIPS02195
Petersburg Borough's snowfall, most winters
85.6 in. a year: that's Petersburg Borough's NOAA 1991-2020 snowfall normal, measured at PETERSBURG 1, AK US (21.4 mi away). See the density guide.
Before you rely on Petersburg Borough's number
Treat the Petersburg Borough 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.