The American Iron and Steel Institute (AISI) has published Supplement No. 3 to AISI S100-16 (Reaffirmed 2020), North American Specification for the Design of Cold-Formed Steel Structural Members, 2022 Edition. The North American Specification harmonizes cold-formed steel design technology across the United States, Canada and Mexico, allowing for faster introduction of new technologies as well as opening up the market for a variety of derivative products such as design aids and educational materials. 

Supplement No. 3 includes changes and additions approved by AISI’s Committee on Specifications since 2016, including those changes published in Supplements 1 and 2. Significant updates are made in Chapters E through J. A detailed list of changes can be found in the Preface

Supplement No. 3 can be downloaded free of charge at as: 1) a stand-alone document, or 2) incorporated into the 2016 edition of the North American Specification. It can be found in the section titled “AISI Standards 2020-22 Editions.”