Light

ZIP Code 50257

Madison County, Iowa — Truro

20PSF (Ground Snow Load)
LightClassification

What This Means

Madison County, Iowa has a light ground snow load of 20 PSF per ASCE 7-22. At this level, most standard residential roofs are designed to handle the load without issue. However, flat or low-slope roofs should still be checked for drifting and sliding snow.

Snow Load Details

ZIP Code50257
CountyMadison
CityTruro
StateIowa (IA)
Ground Snow Load20 PSF — Light
Classification Range1 - 20 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): 20 PSF

Roof Snow Load: 14 PSF

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

Madison 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

50254 20 PSF Light 50255 20 PSF Light 50256 20 PSF Light 50258 25 PSF Moderate 50259 30 PSF Moderate

Frequently Asked Questions

What is the ground snow load for ZIP code 50257?

ZIP code 50257 is in Madison County, Iowa, with a ground snow load of 20 PSF, classified as light per ASCE 7-22.

Is my roof strong enough for snow in 50257?

With a light ground snow load of 20 PSF, standard residential construction typically handles this load, but verify with your local building code.

What county is ZIP code 50257 in?

ZIP code 50257 is in Madison County, Iowa (IA).