This list of seismically-isolated buildings and other structures in the United States has been
developed by the Protective Systems Research Group of the Earthquake Engineering
Research Center at the University of California at Berkeley. The list was last updated in May 1997. We welcome any comments
or additions to this list so that we can keep it up to date. For instructions, please go to our feedback page.
Seismically Isolated Buildings and Other Structures in the United States
| No. | Name | Location | Owner | Engineer | Contractor | Super- Structure | Eq. Design Spectrum | Isolation System/ Supplier | Remarks |
| 1 | Foothill Communities Law & Justice Center
New, 1985 | Rancho Cucamonga, CA | County of San Bernardino | Taylor & Gaines; Reid & Tarics | McCarthy/ Obayashi | 230,000 sq.ft. 4-story steel | - | 98 HDR (LTV) | - |
| 2 | Standford Linear Accelerator Center Mark II Detector
Retrofit, 1987 | Menlo Park, CA | Standford Linear Accelerator Center | - | - | 3 million pound Mark II Detector | DBE A = 0.6g S1 | 4 LRB
(DIS/Furon) | - |
| 3 | Evans & Sutherland Building 600
New, 1988 | Salt Lake City, Utah | The Evans & Sutherland Corp. | Reaveley Engineers & Assoc. | The Bettilyon Corp. | 190,000 sq.ft. 4-story steel | DBE A = 0.25g S1 | 40 LRB
58 NRB (DIS/Furon) | - |
| 4 | Standford Linear Accelerator Center Mark II Detector
New, 1988 | Menlo Park, CA | Standford Linear Accelerator Center | - | - | 1.3 million pound Calorimeter | DBE A = 0.6g NRC | 4 LRB (DIS/Furon) | It was necessary to provide seismic integrity while on its temporary support structure during assembly. |
| 5 | Salt Lake City and County Building,
Retrofit, 1989 | Salt Lake City, Utah | Salt Lake City Corporation | E.W Allen & Associates | Jacobsen Constr=2E | 170,000 sq.ft. 5-story unreinforced brick & sandstone | DBE A = 0.2g S2 | 208 LRB
239 NRB (DIS/Furon) | The base structure is topped off with a clock tower that exceeds 250 ft=2E in height. |
| 6 | Fire Command and Control Center
New, 1990 | East Los Angeles, CA | County of Los Angeles | Fluor-Daniel Engineers, Inc. | Fluor-Daniel Engineers, Inc. | 32,000 sq.ft. 2-story steel | - | 32 HDR (Fyfe Assoc., Dynamic Rubber) | - |
| 7 | USC University Hospital
New, 1991 | Los Angeles, CA | National Medical Enterprises, Inc. | KPFF Consultng Engineers, Inc. | J.A. Jones Construction Co. | 350,000 sq.ft. 7-story steel | DBE A = 0.4g S1 | 68 LRB
81 NRB (DIS/Furon) | - |
| 8 | Rockwell International Corporate Headquarters (Building 80)
Retrofit, 1991 | Seal Beach, CA | Rockwell International | Englekirk & Sabol, Inc. | Morley Construction | 260,000 sq.ft. 8-story concrete | DBE A = 0.55g S1 | 52 LRB
26 NRB (DIS/Furon) | - |
| 9 | Marina Apartment
Retrofit, 1991 | San Francisco, CA | Dr. Hawley | EPS | - | 20,000 sq.ft. | - | 31 FPS (EPS) | - |
| 10 | Kaiser Permanente Regional Data Center
New, 1992 | Corona, CA | Kaiser Permanente Foundation | Taylor & Gaines | Turner Construction Company | 120,000 sq.ft. 2-story steel | DBE A = 0.6g S1 | 26 LRB
28 NRB (DIS/Furon) | - |
| 11 | Two Residences
New, 1992 | West Los Angeles, CA | David Lowe | David Lowe | - | 4,700 sq.ft. ea. | - | GERB Resistant Base (GERB) | - |
| 12 | Titan Solid Rocket Motor Storage
1992 | Vandenburg Air force Base, CA | U.S. Air Force | Bechtel National, Inc. | - | N/A | - | HDR (LTV) | - |
| 13 | Portland Water Bureau Water Control Center
New, 1993 | Portland, Oregon | Portland Water Bureau | Harris Group, Inc. | Koll Construction | 14,000 sq.ft. 2-story steel | DBE A = 0.3g S1 | 31 LRB
4 NRB (DIS) | - |
| 14 | Campell Hall
Retrofit, 1993 | Monmouth, OR | Western Oregon State College | Van Domele, Looijenga, McGarrigle, Knauf | Colamette Construction Co. | 30,000 sq.ft. 3-story unreinforced masonry | DBE A = 0.3g S1 | 26 LRB
16 NRB (DIS) | - |
| 15 | Mackay School of Mines
Retrofit, 1993 | Reno, Nevada | University of Nevada, Reno | Jack Howard & Assoc.; BIC | - | 27,000 sq.ft. | - | HDR, Sliding bearings (Furon) | - |
| 16 | Emergency Operations Center
New, 1994 | Los Angeles, CA | County of Los Angeles | DMJM | - | 33,000 sq.ft. | - | 28 HDR (Bridgestone) | - |
| 17 | Traffic Management Center
New, 1994 | San Diego, CA | Caltrans/CHP | Forell/Elsesser | - | 45,000 sq.ft. | - | 44 HDR (Bridgestone) | - |
| 18 | Hughes Building S-12
Retrofit, 1994 | El Segundo, CA | Hughes Aircraft Company | Brian L. Cochran Associates | Morley Construction Co. | 240,000 sq.ft. 12-story | DBE A = 0.32g S2 | 24 LRB
21 NRB (DIS) | - |
| 19 | Oakland City Hall
Retrofit, 1994 | Oakland, CA | City of Oakland | Forell/Elsesser Engineers, Inc=2E | Overaa/Miller | 153,000 sq.ft. 18-story steel | DBE A = 0.48g S2 | 42 LRB
69 NRB (DIS) | - |
| 20 | U.S. Court of Appeals
Retrofit, 1994 | San Francisco, CA | U.S. General Services Administration | Skidmore, Owings & Merril | - | 350,000 sq.ft. | - | 256 FPS (EPS) | - |
| 21 | San Francisco Main Library
New, 1995 | San Francisco, CA | The City of San Francisco Bureau of Architecture | Olmm Structural Design | Huber, Hunt & Nichol, Inc | 377,000 sq.ft. 7-story steel | DBE A = 0.48g S2 | LRB (DIS/Furon) | - |
| 22 | Martin Luther King/Drew Trauma Center
New, 1995 | Los Angeles, CA | Los Angeles County | John A. Martin & Assoc. | Turner Construction Company | 75,000 sq.ft. 6-story | DBE A = 0.55g S2 | 70 HDR (DIS/Furon) | - |
| 23 | AutoZone Headquarters
New, 1995 | Memphis, Tenn. | AutoZone Corporation | JMGR, Inc. Structural Division | Inman Construction Corp. | 210,000 sq.ft, 8-story concrete | DBE A = 0.16g S2 | 24 LRB
19 NRB (DIS) | - |
| 24 | Long Beach V.A. Hospital
Retrofit, 1995 | Long Beach, CA | Department of Veterans Affairs | Nabih Youssef & Associates | Dillingham Construction | 350,000 sq.ft. 12-story R.C. | DBE A = 0.6g S1 | 110 LRB
18 NRB (DIS/Furon) | - |
| 25 | Missouri Botanical Garden Research Center
New, 1996 | St. Louis, MO | - | Dames & Moore | - | 4-story steel frame | - | 44 HDR (Skellerup) | - |
| 26 | Kerckhoff Hall
Retrofit, 1996 | UCLA Campus, Los Angeles, CA | UCLA | Brandow & Johnston Assoc. | Ray Wilson Company | 92,000 sq.ft. 6-story R.C./Brick | DBE A = 0.6g S1 | 33 LRB
93 NRB (DIS/Furon) | - |
| 27 | Hayward City Hall
New, 1997 | Hayward, CA | City of Hayward | KPFF Consultng Engineers, Inc. | DRR | 100,000 sq.ft. | - | 53 FPS (EPS) 15 Viscous Dampers (Taylor) | - |
| 28 | San Bernardino County Medical Center
New, 1997 | Colton, CA | San Bernardino County | KPFF Consulting Engineers | JCM Group | 1,000,000 sq.ft. steel | DBE A = 0.7g S2 | 400 HDR (DIS) 186 Viscous Dampers (Taylor) | A total of five buildings are included on the campus. |
| 29 | Washigton State E.O.C.
New, 1998 (est.) | Camp Murray, WA | - | - | - | - | - | FPS (EPS) | - |
| 30 | Public Safety Bldg.
New, 1998 (est.) | Berkeley, CA | - | Olmm | N/A | Steel frame | - | N/A | - |
| 31 | San Francisco Airport International Terminal
New, 1998 | San Francisco, CA | - | Skidmore, Owings & Merril | Herrick/PDM | 1.6 million sq.ft. | - | 272 FPS (EPS) | 20 in. dis. capacity 6% dyn. friction 3 sec. period |
| 32 | San Francisco 911
New, 1998 (est.) | San Francisco, CA | - | Forell/Elsesser Engineers, Inc. | S.J. Amoroso | Steel frame | - | HDR (BTR/Andre) | - |
| 33 | San Francisco City Hall
Retrofit, 1998 (est.) | San Francisco, CA | City & County of San Francisco | Forell/Elsesser Engineers, Inc. | Huber Hunt & Nichol, Inc. | 550,000 sq.ft. 5-story | DBE A = 0.5g S2 | 530 LRB (DIS) | - |
| 34 | Los Angeles City Hall
Retrofit, 1999 (est.) | Los Angeles, CA | City of Los Angeles | N. Youssef & Assoc./ SIE | Lehrer McGovern & Bovis | 912,000 sq.ft. | - | approx. 450 HDR, approx. 70 Sliding bearings (Bridgestone), approx. 70 viscous dampers (Taylor) | Viscous dampers are also used in the isolation system and at one level of the tower superstructure. |
| 35 | LAC + USC Medical Center
New, 2000 (est.) | East Los Angeles, CA | County of Los Angeles | KPFF | Turner Construction Company | 550,000 | - | 150 HDR (BTR/Andre) | Under redesign due to project budget cutbacks |
| 36 | Asian Art Museum
Retrofit, Planned | San Francisco, CA | City & County of San Francisco | Forell/Elsesser | - | 170,000 sq,ft. | - | System not yet selected | - |
| 37 | Channing House
Retrofit, Planned | Palo Alto, CA | Channing House | Rinne & Peterson | Anderson Pacific Engin. Constr. | 260,000sq.ft. 11-story R.C. | DBE A = 0.55g S2 | 56 LRB
56 NRB (DIS/Furon) | - |
| 38 | Seattle Standpipe & Water Tank
Planned | Seattle, Washington | Seattle Water Department | Cygna Group Inc. (ICF Kaiser) | - | 6 million and 2 million gallon water tanks | - | (System: N/A) | - |
FPS = friction pendulum system
HDR = high damping rubber
LRB = lead-rubber bearing
NRB = natural rubber bearing |
