Supplement No. 1 to the 2005 American Institute of Steel Construction (AISC)Standard Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications (ANSI/AISC 358-05) is now available for public review. This supplement includes limited revisions to existing provisions for end-plate and reduced beam section (RBS) connections, and provides design provisions for additional moment connection technologies, including the bolted flange plate (BFP) moment connection, the welded unreinforced flange—welded web (WUF-W) moment connection, and the Kaiser Bolted Bracket (KBB) proprietary cast moment connection. The supplement also includes a draft appendix for cast steel material and quality.

The draft supplement is available for review by downloading the document at the links provided below. Please vote and submit comments on the supplement using the attached ballot form. A hard copy of the supplement can also be requested for a fee of $15 by calling 312-670-5411 or by e-mail to

Please submit your comments electronically to using the comment form available at the links below, or mail to:

Christopher Hewitt, S.E.
American Institute of Steel Construction
Suite 700
One East Wacker Drive
Chicago, IL 60601

All comments are due by May 12, 2008.

To download the public review document, visit

To download the comment form, visit

To download the existing 2005 ANSI/AISC 358 Standard, visit