Information for Strong-Motion Station
Piedmont - Jr. High School Building
CGS - CSMIP Station 58334
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.8227 N
Longitude 122.2347 W
Elevation (m) 79
Site Geology Rock (serpentinite)
Vs30 (m/sec) 895 (inferred)
Site Class B
Remarks/Notes Site information sources
No. of Stories above/below ground3/0
Plan ShapeRectangular
Base Dimensions73' x 115'
Typical Floor DimensionsSame as base dimensions
Design Date1973
Instrumentation1978. 11 accelerometers, on 3 levels in the building. 3 accelerometers at a reference free-field site.
Vertical Load Carrying SystemRC frame supporting concrete pan joist system.
Lateral Force Resisting System12" thick RC shearwalls, length 16'-3" center to center of columns, located at 4 corners in transverse and longitudinal direction.
Foundation TypeSpread footings interconnected by RC tie beams.