AISI Publishes Update to Standard For Seismic Design of Cold-Formed Steel Structural Systems—Special Bolted Moment Frames

CFSD - Image - Cover - S110-07E Standard for Seismic Design

WASHINGTON, D.C., April 28, 2010 – The American Iron and Steel Institute (AISI) has published an update to   S110-07-S1-09, the Standard for Seismic Design of Cold-Formed Steel Structural Systems—Special Bolted Moment Frames With Supplement No. 1. The Standard addresses the design and construction of cold-formed steel seismic force-resisting systems (SFRS) in buildings and other structures, with focus on the special bolted moment frame (CFS-SBMF) system.

Cold-formed steel special bolted moment frames have been widely used in industrial platforms, and the system is potentially suitable for a broad range of construction applications. In Supplement No. 1, revisions and additions were made to ensure that the application of the design provisions remains within the configurations used in the initial research of special bolted moment frames. The Commentary on the Standard is also included, which provides important background information. This Standard should be used in conjunction with AISI S100-07, The North American Specification for the Design of Cold-Formed Steel Structural Members. All of these publications are available for purchase online at AISI’s Publications Bookstore at

“The Standard for Seismic Design of Cold-Formed Steel Structural Systems—Special Bolted Moment Frames was developed because building designers lacked a seismic standard for general cold-formed steel applications,” Jay Larson, P.E., F. ASCE, managing director, AISI Construction Technical Program, said.   “In this edition, the focus is on special bolted moment frames formed by tubular columns bolted to cold-formed channel beams. The AISI Seismic Committee will continue its efforts to expand the application of this Standard to other cold-formed steel systems.”

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. For more information, visit

AISI serves as the voice of the North American steel industry in the public policy arena and 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 approximately 75 percent of both U.S. and North American steel capacity. For more news about steel and its applications, visit AISI’s Web site at

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