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| ACI | American Concrete Institute |
| AIA | American Institute of Architects |
| AISI | American Iron & Steel Institute |
| ANSI | American National Standards Institute |
| ASCE | American Society of Civil Engineers |
| ASHRAE | American Society of Heating, Refrigeration & Air Conditioning Engineers |
| ASME | American Society of Mechanical Engineers |
| ASNT | American Society for Nondestructive Testing |
| ASTM | American Society for Testing and Materials |
| AWC | American Wood Council |
| AWS | American Welding Society |
| CALBO | California Building Officials |
| CBSC | California Building Standars Commission |
| CRSI | Concrete Reinforcing Steel Institute |
| DOE | Department of Energy |
| DSA | Division of the State Architect (California) |
| EPA | U. S. Environmental Protection Agency |
| FEMA | Federal Emergency Management Agency |
| HUD | U. S. Department of Housing & Urban Development |
| IAS | International Accreditation Service |
| IAEI | International Association of Electrical Inspectors |
| IAFC | International Association of Fire Chiefs |
| ICC | International Code Council |
| ICC ES | International Code Council Evaluation Service |
| MCEER | Multidisciplinary Center for Earthquake Engineering Research |
| MIA | Masonry Institute of America |
| NAHB | National Association of Home Builders |
| NFPA | National Fire Protection Association |
| NFSA | National Ïire Sprinkler Association |
| NIST | National Institute of Standards & Technology |
| NLC | National League of Cities |
| NSPE | National Society of Professional Engineers |
| OSHA | Occupational Safety & Health Administration |
| PCA | Portland Cement Association |
| SEA | Structural Engineers Association – International |
| SEAOC | Structural Engineers Association of California |
| SEAONC | Structural Engineers Association of Northern California |
| UL | Underwriters Laboratories, Inc. |
| USGS | U. S. Geological Survey |
| WFCA | Western Fire Chiefs Association |
| WWPA | Western Wood Products Association |