Supplement to Prequalified Moment Connection Standard Available for Public Review

September 5, 2017

(Chicago, IL) – The first supplement to the 2016 AISC standard, Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications (AISC 358-16), is available for public review until October 6, 2017. This document adds a new prequalified connection – the SSDA Slotted Web moment connection – and expands the scope of prequalification for the SidePlate moment connection in Chapter 11.

The standard supplement and review form are available for download at Hard copies are also available (for a $35 nominal charge) by contacting AISC’s Janet Cummins at 312.670.5411 or The current 358-16 standard is available for free downloading at, if needed for reference when reviewing the public review document. Please submit comments using the form provided online to AISC’s Margaret Matthew, at, by October 6 for consideration. 


For more information contact:

Dani Friedland
Marketing Communications Strategist

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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