Heavy

ZIP Code 99501

Anchorage County, Alaska — Anchorage

50PSF (Ground Snow Load)
HeavyClassification

What This Means

Anchorage County, Alaska has a heavy ground snow load of 50 PSF per ASCE 7-22. This is a significant structural load. Roofs must be specifically engineered for this snow load. Consider snow guards, proper insulation to prevent ice dams, and roof designs that shed snow effectively.

Snow Load Details

ZIP Code99501
CountyAnchorage
CityAnchorage
StateAlaska (AK)
Ground Snow Load50 PSF — Heavy
Classification Range41 - 60 PSF
Data QualityMeasured

Source: ASCE 7-22 ground snow load polygons via ArcGIS

Roof Snow Load Calculator

ASCE 7-22 flat roof formula:  pf = 0.7 × Ce × Ct × Is × pg

Your ground snow load (pg): 50 PSF

Roof Snow Load: 35 PSF

ⓘ Simplified estimate for flat roofs. Sloped roofs, drift zones, and unbalanced loads need additional calculations. Consult a structural engineer for final design.

Anchorage County Snow Load Map

Counties colored by snow load classification. Gray = No Load, Blue = Light, Amber = Moderate, Orange = Heavy, Red = Extreme, Purple = Case Study.

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Nearby ZIP Codes

99502 50 PSF Heavy 99503 CS Case Study 99504 50 PSF Heavy

Frequently Asked Questions

What is the ground snow load for ZIP code 99501?

ZIP code 99501 is in Anchorage County, Alaska, with a ground snow load of 50 PSF, classified as heavy per ASCE 7-22.

Is my roof strong enough for snow in 99501?

With a heavy ground snow load of 50 PSF, your roof must be specifically engineered for this load. Consult a structural engineer if building or renovating.

What county is ZIP code 99501 in?

ZIP code 99501 is in Anchorage County, Alaska (AK).