STRUCTURAL REQUIREMENTS FOR HOMEBUILDING IN …



BUILDING DESIGN REQUIREMENTS FOR HOMEBUILDING IN ADAMS COUNTY, WA. 2015 code

1) 30 psf ground snow load

2) 110 mph three second wind gusts

3) Exposure C

4) Seismic C

5) R-21 in outside walls

6) R-49 in flat ceilings

7) R-38 in cathedral ceilings

8) R-30 in floors above crawl space

9) R-4 on ducts in unconditioned spaces

10) R-10 rigid around edges of slab if no crawl space

11) 24 inches to bottom of footings (frost depth)

12) Adams County requires blower door testing and/or duct leakage testing on ducts in unconditioned spaces

13) Adams County has adopted the 2015 IBC, 2015 IRC, 2015 IFC, 2015 UPC and 2015 IMC. See code title 15 in the zoning code

14) If you need other information, please call us at

509-488-9441.

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