Imperial County Services Building damaged by the 1979 Imperial Valley earthquake. This was the first time strong-motion records were obtained from a damaged building.
As the network is expanded statewide, new and important data become available on the occasion of each new earthquake. Significant strong-motion records have been obtained from destructive earthquakes. Some examples include:
As these strong-motion records are analyzed and interpreted by engineers and seismologists, the resulting knowledge provides the basis for improvements in structural design and construction. In addition, the local building codes and ordinances that specify earthquake-resistant design and construction practices will be improved.
Earthquakes will continue to be a fact of life in California; however, their effect on our lives and on future generations will gradually diminish as we acquire and apply the knowledge necessary to build safer structures.
The California Department of Health Care Access and Information (HCAI) (formerly OSHPD) arranged for CSMIP to begin instrumenting hospital buildings in 1989. The program has instrumented scores of hospitals and health facilities throughout California.
Since the 1989 Loma Prieta earthquake, a comprehensive project was initiated by the Department of Transportation (Caltrans) and CSMIP to instrument Caltrans bridges throughout the state. This project was in response to recommendations by the Governor's Board of Inquiry that Caltrans implement a comprehensive seismic instrumentation program to provide measurements of ground shaking and record the response of bridge structures during earthquakes.
The project includes instrumentation of highway bridges, free-field sites near major bridges, and subsurface geotechnical arrays. The program has instrumented more than 60 Caltrans bridges. In addition, all Caltrans toll bridges will be extensively instrumented.
The Golden Gate Bridge, Highway and Transportation District arranged for CSMIP to install 76 sensors at the Golden Gate Bridge in 1995. Additional sensors will be installed after the retrofit of this landmark structure is completed.