Information for Strong-Motion Station
El Centro - 1-story Hospital
CGS - CSMIP Station 01699
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 32.7806 N
Longitude 115.5684 W
Elevation (m) -9
Site Geology Deep alluvium
Vs30 (m/sec) 229 (inferred)
Site Class D
Remarks/Notes Site information sources
No. of Stories above/below ground--
Plan ShapeRectangular
Base Dimensions80' x 108' (SW. Wing), 48' x 171' (N. Wing)
Typical Floor Dimensions80' x 108' (SW. Wing), 48' x 171' (N. Wing)
Design Date1973 (Southwest Wing, HL-5001) 1962 (North Wing)
Instrumentation1994. 12 accelerometers, on 3 levels in the building. 3 accelerometers at a reference free-field site.
Vertical Load Carrying SystemLightweight concrete over metal deck supported on steel I beams and tube columns for southwest wing. Poured gypsum roof on steel truss joists for north wing.
Lateral Force Resisting SystemComposite floor diaphragm and tube braces in both directions for southwest wing. Reinforced concrete block wall for north wing.
Foundation TypeIsolated spread footings under all columns
RemarksThe building was instrumented as part of OSHPD/CSMIP Hospital Instrumentation Project.