Light

ZIP Code 48104

Washtenaw County, Michigan — Ann Arbor

20PSF (Ground Snow Load)
LightClassification

What This Means

Washtenaw County, Michigan 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 Code48104
CountyWashtenaw
CityAnn Arbor
StateMichigan (MI)
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.

Washtenaw 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

48101 20 PSF Light 48103 20 PSF Light 48105 25 PSF Moderate 48106 20 PSF Light 48107 20 PSF Light

Frequently Asked Questions

What is the ground snow load for ZIP code 48104?

ZIP code 48104 is in Washtenaw County, Michigan, with a ground snow load of 20 PSF, classified as light per ASCE 7-22.

Is my roof strong enough for snow in 48104?

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 48104 in?

ZIP code 48104 is in Washtenaw County, Michigan (MI).