American Society of Civil Engineers
American Society of Civil Engineers, Oregon Section, Geotechnical Group
American Society of Civil Engineers, Seattle Section
Association of Engineering Geologist (AEG) Washington Section
Deep Foundations Institute (DFI)
Structural Engineers Association of Washington (SEAW)
Vancouver Geotechnical Society (VGS)
WSDOT Geotechnical Design Manual Dec. 2006
WSDOT Geotechnical Home Page
