150 Gather for ATC-17-2 Seminar

MCEER and the Applied Technology Council (ATC) jointly sponsored the ATC-17-2 Seminar on Response Modification Technologies for Performance-Based Seismic Design on May 30-31, 2002 in Los Angeles. It was the third in a series of seminars first held in San Francisco in 1986. The seminar focused on seismic isolation, energy dissipation, active and semi-active control systems, and the use of new materials in structural response modification.

A highlight of the seminar was a field trip to several local facilities that incorporate seismic isolation. Participants visited the Conexant Facility, a microchip wafer fabrication plant that was seismically retrofitted with a rubber base isolation system while the plant remained in operation; St. John's Health Center, which is a base isolated structure currently under construction; the University of Southern California Hospital, a base isolated hospital subjected to strong ground shaking during the 1994 Northridge earthquake; and Los Angeles City Hall, which began a retrofit program in 1999 that includes installation of about 450 rubber isolation bearings, 70 sliding isolation bearings, and 70 fluid viscous dampers.

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