Dynamic Isolation Systems

Notable Projects

Historic Building Retrofits

Notable Projects

Dynamic Isolation Systems has been at the forefront of Seismic Isolation for over 25 years. It has supplied isolators for the majority of prominent isolation projects completed to date.



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San Francisco City Hall

This West Coast landmark was damaged by the 1989 Loma Prieta Earthquake and has been restored and protected from future seismic activity. 530 DIS seismic isolators were installed making it the largest seismic retrofitting project in the world.

Salt Lake City and County Building

The City and County Building was the first Seismic Isolation Retrofit in the world. The retrofitted building is designed to withstand earthquakes up to 7.0 on the Richter Scale. It is a bearing wall structure constructed of unreinforced brick and sandstone. It was completed in 1894 in the Richardson Romanesque style.



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San Diego Coronado Bay Bridge

This prominent project was the first to feature high-speed testing of isolators. Caltrans built a state-of-the-art test facility at the University of San Diego, California for its toll bridge retrofit program. The test rig was the first to be able to test bearings at actual earthquake velocities. The bearings are designed to accommodate a 1.2 meter fault rupture beneath the bridge.

Tan Tzu Medical Center

The Tan Tzu Medical center in Taiwan is currently under construction and at 1.7 million square feet is the largest isolated structure in the world. It is the third hospital in Taiwan for which DIS has provided isolators. Base Isolation was chosen so that the hospital would be operational immediately after an earthquake.



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