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Supplement to ANSI/AISC 358-05 Prequalified Moment Connection Standard Now Available for Public Review

March 27, 2008 From American Institute of Steel Construction, Inc.

Supplement No. 1 to the 2005 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 your 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 [email protected].

Please submit your comments electronically to [email protected] 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 www.aisc.org/358s1.

To download the comment form, visit www.aisc.org/358s1PRcomments.

To download the existing 2005 ANSI/AISC 358 Standard, visit www.aisc.org/AISC358.

For more information contact:

Scott Melnick
VP of Communications
(312) 670-8314
[email protected]


American Institute of Steel Construction
The American Institute of Steel Construction, headquartered in Chicago, is a not-for-profit technical institute and trade association established in 1921 to serve the structural steel design community and construction industry. AISC’s mission is to make structural steel the material of choice by being the leader in structural steel-related technical and market-building activities, including: specification and code development, research, education, technical assistance, quality certification, standardization, and market development. AISC has a long tradition of service to the steel construction industry of providing timely and reliable information. 

130 East Randolph St. Suite 2000
Chicago IL 60601
Phone: 312.670.2400
Fax: 312.626.2402