This is the sixth edition of CSA Standard S136, North American Specification for the Design of Cold-Formed Steel Structural Members (NASPEC). This edition of S136 is a harmonized Standard intended for use in Canada, the United States, and Mexico. It supersedes the previous editions of CSA Standard S136 published in 1994, 1989, 1984, 1974, and 1963 under the title Cold Formed Steel Structural Members.

The NASPEC was developed jointly by CSA?s Technical Committee on Cold Formed Steel Structural Members, the American Iron and Steel Institute?s Committee on Specifications, and Camara Nacional de la Industria del Hierro y del Acero (CANACERO) in Mexico. This effort was coordinated through the North American Specification Committee, which was made up of three members each from CSA?s S136 Committee, the AISI Committee, and CANACERO. A detailed summary of the development of the Standard can be found in the joint preface to the North American Specification.

The Standard was reviewed for use in Canada by the Technical Committee on Cold Formed Steel Structural Members, under the jurisdiction of the Standards Steering Committee on Structures (Design), and has been formally approved by the Technical Committee. It will be submitted to the Standards Council of Canada for approval as a National Standard of Canada.