Washington Hospital Healthcare System, Replacement/Phase One Building
Fremont, Calif.

Construction documents are 75 percent complete for the 300,000-SF, four-story Replacement/Phase One Building, for which we are providing structural engineering services for Fong and Chan Architects. At less than 0.3 kilometers from the Hayward Fault, the building is subject to significant near-fault effects. Nonlinear response history analysis using seven pairs of ground motions was used to analyze the structure. A friction pendulum base-isolation system was employed, which will meet seismic performance objectives implicit in the California building code, and fluid viscous dampers were added to control isolator displacement and limit mote size to 36 inches. The lateral system is steel intermediate moment-resisting frames. The building will have intensive care units, catheterization labs, an emergency care center and other vital facilities. Construction is scheduled for completion in 2014.