Moderate

ZIP Code 57649

Perkins County, South Dakota — Prairie City

40PSF (Ground Snow Load)
ModerateClassification

What This Means

Perkins County, South Dakota has a moderate ground snow load of 40 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 Code57649
CountyPerkins
CityPrairie City
StateSouth Dakota (SD)
Ground Snow Load40 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): 40 PSF

Roof Snow Load: 28 PSF

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

Perkins 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

57646 50 PSF Heavy 57647 50 PSF Heavy 57648 50 PSF Heavy 57650 CS Case Study 57651 40 PSF Moderate 57652 50 PSF Heavy

Frequently Asked Questions

What is the ground snow load for ZIP code 57649?

ZIP code 57649 is in Perkins County, South Dakota, with a ground snow load of 40 PSF, classified as moderate per ASCE 7-22.

Is my roof strong enough for snow in 57649?

With a moderate ground snow load of 40 PSF, standard residential construction typically handles this load, but verify with your local building code.

What county is ZIP code 57649 in?

ZIP code 57649 is in Perkins County, South Dakota (SD).