Light steel frame

Light steel construction uses cold-formed steel channel sections (C-sections) that are much thinner (typically 1.6 to 3.2 mm thick) than hot rolled sections. Light steel sections are produced from galvanized steel. Sections normally range between 75 and 300 mm deep, and are available from various manufacturers.

Light steel frames normally combine many different section sizes and incorporate steel floor joists, beams, columns, stud walls (load bearing) and partitions (non-load bearing). Connections are made using self-drilling, self-tapping screws, welds or bolts.The frame is assembled on site, usually from a series of panels.

Acoustic and fire resistance criteria are important in separating walls and floors. Floor beams may be used in conjunction with composite slabs. Open roof structures may be created using attic type trusses or purlins spanning between flank walls.