American Concrete Institute www.concrete.org American National Standards Institute www.ansi.org American Society of Civil Engineers www.asce.org American Society for Testing and Materials www.astm.org American Welding Society www.aws.org Association of the Wall and Ceiling Industries www.awci.org Brick Industry Association www.bia.org Construction Specification Institute www.csi.org National Concrete Masonry Association www.ncma.org Precast/Prestressed Concrete Institute www.pci.org Portland Cement Association www.cement.org Steel Deck Institute www.sdi.org Steel Joist Institute www.steeljoist.com The Masonry Society www.masonrysociety.org Washington Area Council of Engineering Laboratories (WACEL) www.wacel.org