| AISI - American Iron and Steel Institute |
| SJI - Steel Joist Institute |
| SDI - Steel Deck Institute |
| ACI - American Concrete Institute |
| CRSI - Concrete Reinforcing Steel Institute |
| NCMA - National Concrete Masonry Association |
| PCI - Precast/Prestressed Concrete Institute |
| MIA - Masonry Institute of America |
| BIA - Brick Institute of America |
| DHI - Door and Hardware Institute |
| SWEETS |
| CMD - First Source Exchange |
| USG - US Gypsum Co. |
| National Gypsum Co. |
| AITC - American Institute of Tmber Construction |
| WWPA - Western Wood Products Association |
| APA - American Plywood Association |
| AWPI - American Wood Preservers' Institute |
