AISC’s Supplement No. 1 to Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications (ANSI/AISC 358-05s1) is now available for free download at www.aisc.org.

FORT NIAGARA - A new acoustic gauge that will use sonar beams to log the velocity of the lower Niagara River at the mouth of Lake Ontario is being installed Thursday.

The American Institute of Steel Construction’s group reviewing problematic built-up plate girders in San Francisco’s Salesforce Transit Center is considering the girders’ design detail ...