Seismic Standard Available for Limited Public Review


CHICAGO - The American Institute of Steel Construction invites the public to review and comment on part of its Seismic Provisions for Structural Steel Buildings (AISC 341).

These provisions apply to the design, fabrication, and erection of structural steel and composite steel and concrete seismic force-resisting systems. AISC expects to finalize and release the document later this year.

Revisions to Table D1.1a in that standard are available for public comment from May 13, 2022 to June 12, 2022.

Table D1.1a details width-to-thickness ratios for diagonal braces. This is the only part of the specification that is currently available for public review and comment.

The applicable portion of the draft standard is available as a free download at until June 12, 2022. Printed copies are also available by contacting Martin Downs at

Please submit comments for consideration using the form provided online at to Cynthia J. Duncan, AISC's senior director of engineering ( by June 12, 2022.


For more information contact:

Dani Friedland
Director of Marketing Communications

American Institute of Steel Construction

The American Institute of Steel Construction, headquartered in Chicago, is a non-partisan, 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, market development, and advocacy. AISC has a long tradition of service to the steel construction industry of providing timely and reliable information. 

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