Moderate

ZIP Code 52140

Allamakee County, Iowa — Dorchester

35PSF (Ground Snow Load)
ModerateClassification

What This Means

Allamakee County, Iowa has a moderate ground snow load of 35 PSF per ASCE 7-22. This load requires proper structural consideration during design. Roof framing, trusses, and connections should be engineered for this snow load. Ensure adequate drainage to prevent ponding.

Snow Load Details

ZIP Code52140
CountyAllamakee
CityDorchester
StateIowa (IA)
Ground Snow Load35 PSF — Moderate
Classification Range21 - 40 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): 35 PSF

Roof Snow Load: 24.5 PSF

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

Allamakee 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

52141 35 PSF Moderate 52142 30 PSF Moderate 52143 35 PSF Moderate

Frequently Asked Questions

What is the ground snow load for ZIP code 52140?

ZIP code 52140 is in Allamakee County, Iowa, with a ground snow load of 35 PSF, classified as moderate per ASCE 7-22.

Is my roof strong enough for snow in 52140?

With a moderate ground snow load of 35 PSF, standard residential construction typically handles this load, but verify with your local building code.

What county is ZIP code 52140 in?

ZIP code 52140 is in Allamakee County, Iowa (IA).