Design and Construction Standards for Steel Connections in Seismic Frames

Abstract eng:
Major revisions and additions were made in 2005 to connection design and construction requirements in the American Institute of Steel Construction Seismic Provisions for Structural Steel Buildings (AISC 341). A new AISC standard entitled Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications (AISC 358) was published with details for reduced beam section connections and extended end plate moment connections. The American Welding Society issued a new welding standard entitled Structural Welding Code - Seismic Supplement (AWS D1.8). The three standards were closely integrated to provide comprehensive materials requirements, design procedures, construction techniques and details, and quality assurance provisions. Specific issues include steel and weld material notch toughness and other properties, welding procedure limitations, areas where certain joint details must be used, weld access holes, areas that must be protected from unapproved welds and other attachments, visual inspection and nondestructive testing mandates, and methods of repair. Currently, these three standards are undergoing updates based upon the experience gained in the use of these standards, and further study and research into several additional bolted, welded and hybrid connection types.

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