Seismic Standard Supplement Now Available

The AISC standard Prequalified Moment Connections for Special and Intermediate Steel Moment Frames for Seismic Applications (ANSI/AISC 358-10) has been updated with a second supplement, ANSI/AISC 358s2-14. The second supplement adds the proprietary SidePlate moment connection to the roster of prequalified connections. The prequalified moment connection standard is an essential companion to the AISC Seismic Provisions(ANSI/AISC 341-10).

The supplemented standard now covers seven moment connections: reduced beam section connections; bolted stiffened and unstiffened extended end-plates; bolted flange plate connections; welded unreinforced flange-welded web connections; Kaiser bolted bracket connections; ConXtech CONXL connections; and SidePlate connections. Each connection chapter includes a step-by-step design procedure.

For ease of use, ANSI/AISC 358-10 and its supplements ANSI/AISC 358s1-11 and ANSI/AISC 358s2-14 are available as an integrated, single free download at Learn more about the standard, as well as other current AISC specifications and codes available for free downloading, at