Prequalified Moment Connection Standard Supplement Available for Public Review

The first supplement to the 2016 AISC standard, Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications (AISC 358-16), is now available for public review until March 2, 2018. This document includes an additional prequalified connection, the SSDA Slotted Web moment connection, updates the Chapter 10 ConXtech Con XL moment connection and expands the scope of prequalification for the Chapter 11 SidePlate moment connection.

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 Rachel Jordan at 312.670.5411 or Please submit comments using the online form to AISC’s Margaret Matthew ( by March 2 for consideration.