| www.acec.org | American Council of Engineering Companies (ACEC) |
| www.aisc.org | American Institute of Steel Construction, Inc. |
| www.asce.org | American Society of Civil Engineers (ASCE) |
| www.atcouncil.org | Applied Technology Council (ATC) |
| www.bssconline.org | Building Seismic Safety Council (BSSC) |
| www.celsoc.org | Consulting Engineers & Land Surveyors of California |
| www.eeri.org | Earthquake Engineering Research Institute (EERI) |
| www.iccsafe.org | International Code Council |
| www.seaosc.org/seaosc | Structural Engineers Association of Southern California |
| www.sei.org | Structural Engineering Institute |
| www.seismic.ca.gov | California Seismic Safety Commission (CSSC) |
