Information for Strong-Motion Station
Lancaster - 3-story Office Bldg.
CGS - CSMIP Station 24517
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 34.6871 N
Longitude 118.1582 W
Elevation (m) 717
Site Geology Alluvium
Vs30 (m/sec) 339 (inferred)
Site Class D
Remarks/Notes Site information sources
No. of Stories above/below ground"3/0"
Plan ShapeRectangular
Base Dimensions129' x 70'
Typical Floor DimensionsSame as base dimensions
Design DateApproximately 1974.
Instrumentation1986. 13 accelerometers, on 4 levels in the building. 3 accelerometers at a reference free-field site.
Vertical Load Carrying SystemBlock masonry bearing walls; Steel pipe columns; Wood floor and roof truss joists; Plywood floor and roof.
Lateral Force Resisting SystemBlock masonry shear walls with plywood floor and roof diaphragms.
Foundation TypeConcrete piers and grade beams.