Information for Strong-Motion Station
Los Angeles - 52-story Office Bldg.
CGS - CSMIP Station 24602
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 34.0507 N
Longitude 118.2595 W
Elevation (m) 89
Site Geology Alluvium over rock (sedimentary)
Vs30 (m/sec) 500 (measured)
Site Class C
Remarks/Notes Site information sources
No. of Stories above/below ground52/5
Plan ShapeSquare with clipped corners
Base Dimensions274 x 263 ft (83.5 x 80.2 m)
Typical Floor Dimensions156 x 156 ft (47.5 x 47.5 m)
Design Date1988-90
Instrumentation1990. 20 accelerometers, on 7 levels in the building.
Vertical Load Carrying System3 - 7 in. (7.6 - 17.8 cm) concrete slabs on steel deck supported by steel frames.
Lateral Force Resisting SystemConcentrically braced steel frames at the core with outrigger moment frames in both directions
Foundation TypeConcrete spread footings, 9 to 11 ft (2.7 - 3.3 m) thick.