For buildings designed to current U.S. standards, in seismic events, do structural engineers expect damage in building diaphragms, or not?

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For buildings designed to current U.S. standards, in seismic events, do structural engineers expect damage in building diaphragms, or not?
SDII investigator Ben Schafer released a report: “Research on the Seismic Performance of Rigid Wall Flexible Diaphragm Buildings with Bare