Design Specifications

DESIGN SPECIFICATIONS ARE PARCEL SPECIFIC. 

Please have your tax parcel number available and contact the Plans Examiner at 509-574-2300 for the design specifications for your parcel. 


  • FEMA designated Floodplain, Floodway.  Three elevation certificates are required.  (1) Construction Drawings, (2) Building Under Construction and (3) Finished Construction.
  • Seismic Zone -  C or D-1
  • Snow Load - Varies from 20 pounds to well over 200.  Areas with over 70 pound snow load will require engineering.
  • Wind Speed:   Residential projects 85   (will increase to 110 at time 2015 IRC is adopted)
  • Wind Speed:  Commercial projects 110