City of Spearfish, SD
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CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA

City of Spearfish, SD

Ground Snow Load 

43

Wind Speed     (mph)

90

Seismic Design Category

A

 

 

Subject to Damage From:

 

Weathering

Moderate

Frost Line Depth

42”

Termite

None to Slight

Decay

None to Slight

 

 

Winter Design Temperature (f)

- 7

Ice Shield Under-layment Required

Yes

Flood Hazards

NFIP

Air Freezing Index

2,000

Mean Annual Temperature 

42


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