Moderate

ZIP Code 57001

Union County, South Dakota — Alcester

35PSF (Ground Snow Load)
ModerateClassification

What This Means

Union County, South Dakota 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 Code57001
CountyUnion
CityAlcester
StateSouth Dakota (SD)
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.

Union 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

57002 50 PSF Heavy 57003 40 PSF Moderate 57004 35 PSF Moderate

Frequently Asked Questions

What is the ground snow load for ZIP code 57001?

ZIP code 57001 is in Union County, South Dakota, with a ground snow load of 35 PSF, classified as moderate per ASCE 7-22.

Is my roof strong enough for snow in 57001?

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 57001 in?

ZIP code 57001 is in Union County, South Dakota (SD).