ARCH 205 BUILDING CONSTRUCTION WALL SYSTEMS STEEL STRUCTURAL

ARCH 205 BUILDING CONSTRUCTION WALL SYSTEMS- STEEL

STRUCTURAL STEEL FRAMING • Conventional steel-framed structures are constructed of hotrolled beams and columns, openweb joists, and metal decking. • Since structural steel is difficult to work on site, it is normally cut, shaped, and drilled in a fabrication shop according to design specifications; this can result in relatively fast, precise construction.

• The most frequently used section for columns is the wide-flange (W) shape. • It is suitable for connections to beams in two directions, and all of its surfaces are accessible for making bolted or welded connections. • Other steel shapes used for columns are round pipes and square or rectangular tubing. • Column sections may also be fabricated from a number of shapes or plates to fit the desired end-use of a column.

CURTAIN WALLS ON STEEL FRAMES • The columns in a steel frame structure transfer the gravity and lateral loads down to the foundation system, so the exterior walls are essentially nonloadbearing curtain walls. • There are three basic relationships that may be established between a structural steel frame and the curtain wall or cladding it supports. • Column in front of the wall plane • Column within the wall plane • Column behind the wall plane

STEEL BEAM CONNECTIONS

STEEL COLUMN SPLICES CONNECTIONS

STEEL COLUMN BASE PLATE

LIGHT GAUGE STEEL FRAMING • Light-gauge steel studs are manufactured by coldforming sheet or strip steel. • The cold-formed steel studs can be easily cut and assembled with simple tools into a wall structure that is lightweight, noncombustible, and damp-proof.