DIS has isolated over 40 hospitals worldwide, helping ensure that buildings remain operational, essential equipment stays functional, and healthcare teams can continue delivering care during and after an earthquake.
California, USA
USC Hospital
Operational throughout the 1994 Northridge Earthquake, no damage.
Taiwan
Tan Tzu Medical Center
1.7 M sq ft, the largest isolated structure in the world.
Taiwan
Xindian General Hospital
Tested to 400% shear strain at UCSD.
Part of the Ministry of Health's modernization.
Southern California
Arrowhead Medical Center
Five independently-isolated buildings.
New Delhi, India
GTB Hospital
Response to the 2001 Bhuj earthquake collapses.
For historic and existing structures, isolation often provides the most effective retrofit strategy, maintaining architectural integrity while dramatically lowering seismic demands on the building.
California, USA
San Francisco City Hall
530 DIS isolators, the largest seismic retrofit in the world.
Utah, USA
Salt Lake City & County Building
The first seismic isolation retrofit in the world (1894 building).
Utah, USA
Utah State Capitol
Corinthian architecture, completed 1915.
Wellington, NZ
New Zealand Parliament
Conservation objectives preserved original fabric.
California, USA
Oakland City Hall
18-story building retrofit.
San Francisco, USA
Asian Art Museum
Former SF City Library, 200 isolators, $7B in artwork.
Auckland, New Zealand
Old Bank Arcade
Heritage Victorian building retrofitted with base isolation.
Museum structure protected by seismic isolation.
Seismic isolation can reduce foundation forces by up to 75%, enabling smaller foundations, lower material demands, and greater design flexibility.
New York, USA
JFK Light Rail
10 miles, 1,364 DIS isolators.
Guadalajara, Mexico
Patria Acueducto
50% fewer piles thanks to isolation.
California, USA
Oakland Bay Bridge Bypass
Temporary bypass on 4 DIS bearings (2009).
Washington, DC
Woodrow Wilson Bridge
Bascule bridge over the Potomac.
Montreal, Canada
Autoroute 25
Performed as designed in the April 2010 earthquake.
Isolated crossing that came through the 2010 Maule earthquake intact.
Seismic isolation bearings on the motorway viaducts.
DIS isolators have been used in the retrofit of more than 50 bridges worldwide. By redistributing seismic forces more effectively, retrofits can often be achieved without extensive strengthening of existing piers and foundations.
California, USA
Golden Gate Bridge, North Approach
Designed to withstand magnitude 8.3.
California, USA
Richmond–San Rafael Bridge
55-inch isolators with triple 11-inch lead cores.
California, USA
San Diego–Coronado Bay Bridge
First high-speed isolator testing program.
California, USA
Eel River Bridge
Re-centered to within ¼ inch after a 7.0 magnitude event.
California, USA
Feather River Bridge
Lead rubber isolators in a harsh roadway environment.
112 isolators plus complete hardware package.
Seismic isolation is a natural fit for data centers. With backup power, redundant networks, and mirrored storage already built for resilience, isolation adds another critical layer of protection by minimizing structural movement during an earthquake.
Costa Rica
Mobile Data Center
Shipping-container facility on low-mass isolation.
Seattle, USA
King County Emergency Center
DIS's first floor isolation project.
High-availability data center on seismic isolation.
In some facilities, what's inside matters just as much as the structure itself. From laboratories and semiconductor fabs to broadcast studios, seismic isolation protects critical equipment and valuable assets from damage caused by earthquake forces.
Mexico & California
Conexant Semiconductor Plants
Three plants protecting billions in assets.
Los Angeles, USA
Hughes S-12 Satellite Building
12-story retrofit completed without interruption.
Seattle, USA
Immunex Research Campus
$50 M of state-of-the-art equipment protected.
Emergency centers must remain fully operational when they are needed most. Seismic isolation helps ensure these critical facilities stay functional during and after an earthquake, enabling government agencies and emergency response teams to coordinate effectively when every second counts.
California, USA
Berkeley Public Safety Building
Designed to withstand magnitude 7.0 and remain operational.
California, USA
LA Regional Transportation Mgmt Center
Manages 525 miles of mainline roadway.
California, USA
Long Beach 911 Center
Emergency dispatch center built to stay operational after an earthquake.
California, USA
San Diego Emergency Operations Center
Emergency operations facility on seismic isolation.
Utah, USA
Salt Lake City Public Safety Building
Base-isolated police and fire headquarters.
Decades of engineering expertise enable DIS to solve complex seismic challenges across a wide range of applications. From submerged towers and piers to historic bridges and other specialized structures, we develop isolation solutions for projects where conventional approaches may not be enough.
San Francisco, USA
Berry Street Project
ATC & SEI Seismic Isolation Project of the Decade (2009).
Oregon, USA
Round Butte Reservoir Tower
Selective Water Withdrawal Tower in 200 ft of water.
San Diego, USA
Broadway Pier
Marine retrofit with stainless steel plates.
Seattle, USA
Myrtle St. Water Tanks
Utility retrofit for post-earthquake service.
United States
Dancing Lady Statue
Monumental sculpture mounted on seismic isolation bearings.
