Moderate

ZIP Code 60099

Lake County, Illinois — Zion

30PSF (Ground Snow Load)
ModerateClassification

What This Means

Lake County, Illinois has a moderate ground snow load of 30 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 Code60099
CountyLake
CityZion
StateIllinois (IL)
Ground Snow Load30 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): 30 PSF

Roof Snow Load: 21 PSF

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

Lake 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

60096 30 PSF Moderate 60097 25 PSF Moderate 60098 25 PSF Moderate 60101 25 PSF Moderate 60102 25 PSF Moderate

Frequently Asked Questions

What is the ground snow load for ZIP code 60099?

ZIP code 60099 is in Lake County, Illinois, with a ground snow load of 30 PSF, classified as moderate per ASCE 7-22.

Is my roof strong enough for snow in 60099?

With a moderate ground snow load of 30 PSF, standard residential construction typically handles this load, but verify with your local building code.

What county is ZIP code 60099 in?

ZIP code 60099 is in Lake County, Illinois (IL).