05 30 00 Metal Decking 05 31 00 Steel Decking 05 51 00 Metal Stairs 05 52 00 Metal Railings 13 21 00 Controlled Environment Rooms 05 12 00 Structural Steel Framing 05 00 00 Metals 05 10 00 Structural Metal Framing 05 20 00 Metal Joists 05 21 00 Steel Joist Framing
CSI Codes : 05 00 00 Metals, 05 00 00 Metals, 05 00 00 Metals, 05 00 00 Metals, 05 00 00 Metals, 05 10 00 Structural Metal Framing, 05 12 00 Structural Steel Framing, 05 12 00 Structural Steel Framing, 05 12 00 Structural Steel Framing, 05 20 00 Metal Joists, 05 21 00 Steel Joist Framing, 05 30 00 Metal Decking, 05 31 00 Steel Decking, 05 51 00 Metal Stairs, 05 51 00 Metal Stairs, 05 52 00 Metal Railings, 05 52 00 Metal Railings, 13 21 00 Controlled Environment Rooms