AISI Releases Updated Standard for Residential Construction

WASHINGTON, D.C., March 3, 2009  – The American Iron and Steel Institute (AISI) announced today the publication of AISI S230-07 w/S2-08, the Standard for Cold-Formed Steel Framing – Prescriptive Method for One and Two Family Dwellings, 2007 Edition With Supplement 2. The full document is available for purchase online at or toll-free at 1-866-465-4732. Supplement 2 was developed in 2008 to revise and clarify certain wall bracing provisions. The full document, AISI S230-07 w/S2-08, provides prescriptive requirements for cold-formed steel-framed detached one- and two-family dwellings, townhouses, attached multi-family dwellings, and other attached single-family dwellings. This new version supersedes the previous 2006 edition.

AISI S230-07 w/S2-08 has been referenced by the 2009 editions of the International Code Council (ICC) and National Fire Protection Association model building codes. The standard is also referenced in ICC-600, the new Standard for Residential Construction in High-Wind Regions. The standard is a valuable resource for builders, architects, engineers and code officials that design, inspect or review plans for residential steel construction. It was developed by AISI’s Committee on Framing Standards (COFS) through the American National Standards Institute (ANSI) consensus process, which includes engineers, researchers, producers, manufacturers, installers and builders. 

Jay Larson, P.E., F. ASCE., managing director of construction technical for AISI, said that the revisions to the standard are significant, such as allowing the Prescriptive Method to apply to three-story buildings and buildings with hip framing, which were not addressed in previous editions. “There are also changes that increase the competitiveness of cold-formed steel in the marketplace, including provisions for clip angle bearing stiffeners, hole reinforcing, single L-headers and inverted L-header assemblies, among other additions. There are many technical changes to the provisions in the new edition to keep up with the ever-changing requirements in codes and referenced standards,” he said. 

AISI’s codes and standards work is conducted under the Construction Market Council of the Steel Market Development Institute (SMDI), a business unit of AISI. The SMDI oversees the industry’s investment in advancing the case for steel in the marketplace as the preferred material of choice. AISI serves as the voice of the North American steel industry in the public policy arena and advances the case for steel in the marketplace as the preferred material of choice. AISI also plays a lead role in the development and application of new steels and steelmaking technology. AISI is comprised of 25 member companies, including integrated and electric furnace steelmakers, and 138 associate and affiliate members who are suppliers to or customers of the steel industry. AISI’s member companies represent over 70 percent of both U.S. and North American steel capacity. For more news about steel and its applications, visit

Debbie Bennett
Manager, Communications
Construction Market
Steel Market Development Institute
Tel: 202.452.7179