American Concrete Institute (ACI)
American Geological Institute (AGI)
American Institute of Architects (AIA)
American Society of Civil Engineers (ASCE)
American Iron and Steel Institute (AISI)
Building Stone Institute (BSI)
Construction Specifications Institute (CSI)
Elberton Granite Association, Inc.
Indiana Limestone Institute of America, Inc. (ILI)
International Masonry Institute (IMI)
Mason Contractors Association of America
Masonry Institute of America (MIA)
National Association of Architectural Metal Manufacturers (NAAMM)
National Tile Contractors Association (NTCA)
Precast/Prestressed Concrete Institute (PCI)
Terrazzo Tile and Marble Association of Canada