Extreme

ZIP Code 03868

Strafford County, New Hampshire — East Rochester

70PSF (Ground Snow Load)
ExtremeClassification

What This Means

Strafford County, New Hampshire has an extreme ground snow load of 70 PSF per ASCE 7-22. This requires robust structural engineering with heavy-duty framing. Snow removal plans, snow guards, and reinforced roof systems are essential. Consult a licensed structural engineer for any construction.

Snow Load Details

ZIP Code03868
CountyStrafford
CityEast Rochester
StateNew Hampshire (NH)
Ground Snow Load70 PSF — Extreme
Classification Range61+ 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): 70 PSF

Roof Snow Load: 49 PSF

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

Strafford 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

03865 50 PSF Heavy 03866 70 PSF Extreme 03867 70 PSF Extreme 03869 60 PSF Heavy 03870 50 PSF Heavy 03871 50 PSF Heavy

Frequently Asked Questions

What is the ground snow load for ZIP code 03868?

ZIP code 03868 is in Strafford County, New Hampshire, with a ground snow load of 70 PSF, classified as extreme per ASCE 7-22.

Is my roof strong enough for snow in 03868?

With a extreme ground snow load of 70 PSF, your roof must be specifically engineered for this load. Consult a structural engineer if building or renovating.

What county is ZIP code 03868 in?

ZIP code 03868 is in Strafford County, New Hampshire (NH).