American
Association of State Highway and Transportation Officials (AASHTO)
American Concrete Institute (ACI)
American Council of Engineering Companies
(ACEC)
American Council of Engineering Companies
of Pennsylvania (ACEC/PA)
American Institute of Steel Construction
(AISC)
American Iron and Steel Institute (AISI)
American Public Works Association (APWA)
American Railway Engineering and
Maintenance-of-Way Association (AREMA)
American Segmental Bridge Institute
(ASBI)
American Society of Civil Engineers
(ASCE-National)
American Society of
Highway Engineers (ASHE)
American Society for
Metals (ASM)
American Society for Testing and
Materials (ASTM)
American Welding Society (AWS)
Association of Engineering Geologists
(AEG)
Association of Iron & Steel Engineers
(AISE)
Concrete Reinforcing Steel Institute
(CRSI)
Deep Foundation Institute (DFI)
Institute of Transportation Engineers
(ITE)
International Association for
Bridge and Structural Engineering (IABSE)
National Association of
Demolition Contractors (NADC)
National Bridge Research
Organization 
National Steel Bridge Alliance (NSBA)
Ohio
Society Of Professional Engineers (OSPE)
Portland Cement Association (PCA)
Precast/Prestressed Concrete Institute
(PCI)
Steel Construction Institute (SCI,
UK)