The Precast/Prestressed Concrete Institute (PCI) conducted a large "area of emphasis" project to develop an industry-endorsed comprehensive seismic design methodology for precast concrete floor diaphragms. A multi-university research team form the University of Arizona (UA), Lehigh University (LU) and the University of California, San Diego (UCSD) along with nees@UCLA, were selected to perform this collaborative research. An active industry task group oversaw the planning and execution phase of the research. These groups comprise the DSDM (Diaphragm Seismic Design Methodology) Consortium. The DSDM Consortium research closely integrated finite element analyses of the diaphragm at UA with full-scale reinforcing detail experiments at LU and shaking table system tests at UCSD.
Specimen with control building
Specimen on shake table