American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)


The material contained herein has been developed by the American Iron and Steel Institute Committee on Specifications for the Design of Cold-Formed Steel Structural Members. The Committee has made a diligent effort to present accurate, reliable, and useful information on cold-formed steel design. The Committee acknowledges and is grateful for the contributions of the numerous researchers, engineers, and others who have contributed to the body of knowledge on the subject.

With anticipated improvements in understanding of the behavior of cold-formed steel and the continuing development of new technology, this material may eventually become dated. It is anticipated that AISI will publish updates of this material as new information becomes available, but this cannot be guaranteed.

The materials set forth herein are for general information only. They are not a substitute for competent professional advice. Application of this information to a specific project should be reviewed by a registered professional engineer. Indeed, in most jurisdictions, such review is required by law. Anyone making use of the information set forth herein does so at their own risk and assumes any and all resulting liability arising therefrom.

AISI Cold-Formed Steel Design Manual has been produced by the Steel Market Development Institute, a business unit of AISI.


Civil, Architectural and Environmental Engineering

Research Center/Lab(s)

Wei-Wen Yu Center for Cold-Formed Steel Structures


American Iron and Steel Institute

Publication Date

01 Apr 2009

Document Version

Final Version


© 2009 American Iron and Steel Institute, All rights reserved.

Document Type

Technical Report

File Type




Technical Report Number

D100-08-CFSMANUAL- 0409-5K-AP