Moderate

ZIP Code 51537

Shelby County, Iowa — Harlan

25PSF (Ground Snow Load)
ModerateClassification

What This Means

Shelby County, Iowa has a moderate ground snow load of 25 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 Code51537
CountyShelby
CityHarlan
StateIowa (IA)
Ground Snow Load25 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): 25 PSF

Roof Snow Load: 17.5 PSF

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

Shelby 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

51534 25 PSF Moderate 51535 25 PSF Moderate 51536 25 PSF Moderate 51540 25 PSF Moderate

Frequently Asked Questions

What is the ground snow load for ZIP code 51537?

ZIP code 51537 is in Shelby County, Iowa, with a ground snow load of 25 PSF, classified as moderate per ASCE 7-22.

Is my roof strong enough for snow in 51537?

With a moderate ground snow load of 25 PSF, standard residential construction typically handles this load, but verify with your local building code.

What county is ZIP code 51537 in?

ZIP code 51537 is in Shelby County, Iowa (IA).