BUILDING CODES

BUILDING CODES

BUILDING CODES

All Architects Northwest house plans are designed to comply with the International Residential Code (IRC) and the Washington State Energy Code. Some Washington State counties and cities have additional building codes, zoning requirements, and other regulations that may apply to your project. Modifications may be necessary to meet these local codes, most notably regarding site-specific earthquake loads, special wind loads, increased snow loads, soils conditions, flood plain and critical areas issues. Nearly all Washington State jurisdictions require site-specific lateral (wind & earthquake) engineering calculations stamped by a Professional Engineer (PE) licensed in Washington State. As early as possible in planning your project, it is a good idea to check with your local building department to determine the specific requirements that will apply to your site.

Architects Northwest Standard Design Loads

Roof
Roof

15 PSF Dead Load + 25 PSF Live Load= 40 PSF

Floor
Floor

10 PSF Dead Load + 40 PSF Live Load= 50 PSF

Ceiling
Ceiling

05 PSF Dead Load + 10 PSF Live Load= 15 PSF

Deck
Deck

05 PSF Dead Load + 40 PSF Live Load= 45 PSF

Interior Wall
Interior Wall

07 PSF

Exterior Wall
Exterior Wall

10 PSF

Snow Load
Snow Load

25 PSF

Wind Load
Wind Load

85 PSF

Wind Exposure
Wind Exposure

B

Seismic Category
Seismic Category

D

Architects Northwest Standard Beam Design Deflection Criteria

Roof
Roof

15 PSF Dead Load + 25 PSF Live Load= 40 PSF

Floor
Floor

10 PSF Dead Load + 40 PSF Live Load= 50 PSF

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