Building Department - Climatic and Geographic Design Criteria

 
RESIDENTIAL DESIGN CRITERIA
TABLE R301.2(1)
International Residential Code (IRC)
 
Ground Snow Load Basic Wind Speed (MPH) Topographic Effects
Seismic Design Category
85 Basic, 110 Ultimate with 3 second wind gust
Figure R301.2(4)A
Exposure site specific
See R301.2.1.4
 No
D2
 
 
Winter Design Temp
Ice Shield
Underlayment Required
 
Flood Hazards
23 F
no
   June 2019
Flood Damage Prevention
Flood and Slide Control
         
 
Air Freezing Index
Mean Annual Temp
170
51 F
         
 
PSF
  
1500 soils
 
         
Subject to damage from
Weathering
Frostline Depth
Termites
  
Decay
moderate
12 inches
slight to moderate
 
slight to moderate