AS 1538-1988

Sets out rules for the use of structural members of cold-formed steel. This Standard is intended to be complementary to AS 1250-1981, and includes requirements for material less than 3 mm thick. While the technical requirements of this revision are essentially those of the 1974 edition, a number of significant amendments have been made. These include unstiffened compression elements, provision for web stiffeners, introduction of inelastic reserve capacity of flexural members, elastic critical stress of laterally unbraced beams, permissible bending stresses in web, stiffened and unstiffened flanges, web crippling of beam and axially-loaded compression members.