The American Iron and Steel Institute (AISI) has published AISI S240-15,North American Standard for Cold-Formed Steel Structural Framing, 2015 Edition, to address requirements for building construction with cold-formed steel structural framing that are common to prescriptive and engineered design. It applies to the design and installation of structural members and connections utilized in cold-formed steel light-frame construction applications, including floor and roof systems, structural walls, shear walls, strap braced walls and diaphragms to resist in-plane lateral loads, and trusses for load-carrying purposes. The standard is to be used in conjunction with AISI S100-12, North American Specification for the Design of Cold-Formed Steel Structural Members, 2012 Edition and is intended for adoption and use in the United States, Canada and Mexico.It is available for free download at http://www.aisistandards.org.
