Extreme

ZIP Code 03249

Belknap County, New Hampshire

80PSF (Ground Snow Load)
ExtremeClassification

What This Means

Belknap County, New Hampshire has an extreme ground snow load of 80 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 Code03249
CountyBelknap
City—
StateNew Hampshire (NH)
Ground Snow Load80 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): 80 PSF

Roof Snow Load: 56 PSF

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

Belknap 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

03246 80 PSF Extreme 03247 80 PSF Extreme 03251 CS Case Study 03252 80 PSF Extreme

Frequently Asked Questions

What is the ground snow load for ZIP code 03249?

ZIP code 03249 is in Belknap County, New Hampshire, with a ground snow load of 80 PSF, classified as extreme per ASCE 7-22.

Is my roof strong enough for snow in 03249?

With a extreme ground snow load of 80 PSF, your roof must be specifically engineered for this load. Consult a structural engineer if building or renovating.

What county is ZIP code 03249 in?

ZIP code 03249 is in Belknap County, New Hampshire (NH).