ZIP Code 99835
Sitka City and County, Alaska — Sitka
What This Means
Sitka City and 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 Code | 99835 |
| County | Sitka City and |
| City | Sitka |
| State | Alaska (AK) |
| Ground Snow Load | 50 PSF — Heavy |
| Classification Range | 41 - 60 PSF |
| Data Quality | Measured |
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
ⓘ Simplified estimate for flat roofs. Sloped roofs, drift zones, and unbalanced loads need additional calculations. Consult a structural engineer for final design.
Sitka City and 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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Frequently Asked Questions
What is the ground snow load for ZIP code 99835?
ZIP code 99835 is in Sitka City and 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 99835?
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 99835 in?
ZIP code 99835 is in Sitka City and County, Alaska (AK).