Design of Steel Deck Diaphragms

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Duration: 2.00
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February 17, 2026; 9:00 AM – 11:00 AM Pacific Time
Matt Eatherton, Ph.D., S.E.,

This webinar will cover the design of bare steel deck and concrete-filled steel deck diaphragms with an emphasis on seismic design. The parts of a steel deck diaphragm will be introduced along with the typical limit states. Concepts related to the seismic design of diaphragms will be presented and then application to steel deck diaphragms will be described. Relevant research provisions along with some mention of the supporting recent research will be examined.

Attendees will gain an understanding of steel deck diaphragm behavior, seismic design of steel deck diaphragms, and recent research that has been conducted.

Speaker Bio

Matt Eatherton, Ph.D., S.E., is a Professor in the Department of Civil and Environmental Engineering at Virginia Tech. He conducts research on diaphragms and floor systems in steel buildings, as well as seismic design of steel structures. He is a part of the Steel Diaphragm Innovation Initiative (SDII) www.steeli.org that generated a number of updates to steel deck diaphragm design provisions in recent years. He has seven years of practicing structural engineer experience and sixteen years of academic experience. He has been awarded several honors including the AISC Milek Faculty Fellowship, NSF Career award, AISC Early Faculty Award, ASCE Moissef Paper Award, and the Curry Faculty Fellowship at Virginia Tech.

Matt Eatherton, Ph.D., S.E., is a Professor in the Department of Civil and Environmental Engineering at Virginia Tech. He conducts research on diaphragms and floor systems in steel buildings, as well as seismic design of steel structures. He is a part of the Steel Diaphragm Innovation Initiative (SDII) www.steeli.org that generated a number of updates to steel deck diaphragm design provisions in recent years. He has seven years of practicing structural engineer experience and sixteen years of academic experience. He has been awarded several honors including the AISC Milek Faculty Fellowship, NSF Career award, AISC Early Faculty Award, ASCE Moissef Paper Award, and the Curry Faculty Fellowship at Virginia Tech.

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