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

August 25, 2008 From American Institute of Steel Construction

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 a second 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 an appendix for cast steel material and quality.

The only item to be reviewed in this ballot is Section A.2.4(2)b. The proposed revision increases the sampling to 50% of the production castings from 25% in the previous ballot. This change was made as a result of negative comments received on the first ballot and the committee’s determination that this rate would be more consistent with that necessary to assure a quality product.

The complete supplement is available for your review by downloading the document at the links provided below. Please vote and submit comments on this single change using the attached ballot form. A hard copy of the supplement can also be requested for a fee of $15 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:

Janet Cummins
American Institute of Steel Construction
Suite 700
One East Wacker Drive
Chicago, IL 60601

All comments are due by October 20, 2008.

To download the public review document, visit www.aisc.org/358s2.

To download the comment form, visit www.aisc.org/358s2PRcomments.

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

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. 

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