Information for Strong-Motion Station
El Centro - Imperial Co Srvcs Bld [demol]
CGS - CSMIP Station 01260
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 32.7930 N
Longitude 115.5630 W
Elevation (m) tbd
Site Geology Deep alluvium
Vs30 (m/sec) 192 (measured)
Site Class D
Remarks Site information sources
No. of Stories above/below ground6/0
Plan ShapeRectangular
Base Dimensions136'-10" x 85'-4"
Typical Floor DimensionsSame as base dimensions
Design Date1968
Instrumentation1976. 13 accelerometers, on 4 levels in the building. 3 accelerometers at a reference free-field site.
Vertical Load Carrying System5" RC slabs supported by RC pan joists spanning in transverse direction; joists supported by RC frame.
Lateral Force Resisting SystemRC shear-walls in transverse direction; RC frame in longitudinal direction.
Foundation TypeRaymond step-taper piles under each column; pile caps interconnected with RC tie beams
RemarksDamaged in the 1979 Imperial Valley earthquake; demolished after the earthquake.