Metal Design Resources
Aluminum Association www.aluminum.org
American Institute of Steel Construction www.aisc.org
American Iron and Steel Institute www.steel.org
American Welding Society www.aws.org
Light Guage Steel Engineers Association www.lgsea.org
Research Council on Structural Connections www.boltcouncil.org
Steel Joist Institute www.steeljoist.org
Welding Research Council www.forengineers.org
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