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1.23.14 | ASCE 7-10 – What’s New - and a Look Ahead to ASCE 7-16

Though not radically different from ASCE 7-05 in most respects, ASCE 7-10 introduces important concepts in performance and risk-based design. This includes: explicit permission of performance-based design as an alternate to the strength and allowable stress design procedures; definition of the reliability and risk targets that underlie the strength load combinations; and prescription of the process for development of load combinations and resistance factors for conditions not covered by the prescriptive procedures. In addition, ASCE 7-10 adopts new risk-based seismic parameter maps, and new risk-category dependent wind maps. This sets the stage for planned revisions to ASCE 7-16 that will put forth performance-based design as the basic procedure, with the traditional strength and allowable stress procedures retained as “deemed to comply” alternatives. Mr. Hamburger, will describe the risk basis for ASCE 7-10 and the procedures that can be used to implement performance-based design under the standard. In addition, he will describe the basis for the new risk-based seismic maps and talk briefly about the innovations proposed for ASCE 7-16.