acec-co.org   (American Consulting Engineers Council of Colorado) aiacolorado.org   (American Institute of Architects / Colorado) steel.org   (American Iron and Steel Institute) aisc.org   (American Institute of Steel Construction) strongtie.com   (Simpson Strong-Tie) trusjoist.com   (Trus-Joist) awc.org   (American Wood Council) gostructural.com   (Structural Engineer Magazine) asce.org   (American Society of Civil Engineers) astm.org   (American Society for Testing and Materials) nahb.com   (National Association of Home Builders) ncma.org   (National Concrete Masonry Association) nspe.org   (National Society of Professional Engineers) sdi.org   (Steel Deck Institute) crsi.org   (Concrete Reinforcing Steel Institute) lgsea.com   (Light-Gauge Steel Engineers Association) agccolorado.org   (Associated General Contractors of Colorado) ncees.org   (Professional Engineers Licensing Board) firstsourceonl.com   (Codes, costs, products) ansi.org   (American National Standards Institute) portcement.org   (Portland Cement Association) seacolorado.com   (Structural Engineers Association of Colorado) ncsea.com   (National Council of Structural Engineers Associations) icbo.com   (International Council of Building Officials) woodtruss.com   (Wood Truss Council of America) aws.org   (American Welding Society) masonrysociety.org   (Masonry Society) LGSframing.com (Light-Gauge steel framing) simpsonanchors.com (concrete/masonry anchors) steelnetwork.com (Light-gauge steel products) us.hilti.com (anchoring systems) finehomebuilding.com (Fine Homebuilding Magazine) psmj.com (Professional Services Management Journal) abchance.com (steel helical piers) masonryresearch.org (Council for Masonry Research) woodfocus.com (Canadian Wood Council) sermc.org (Structural Engineers Risk Management Council) http://www.icc-es.org  ( ICC Evaluation Services, Inc.)