Information for Strong-Motion Station
San Francisco - 18-story Commercial Bldg
CGS - CSMIP Station 58480
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.7920 N
Longitude 122.4006 W
Elevation (m) 4
Site Geology Fill over alluvium (bay mud)
Vs30 (m/sec) - -
Site Class D
Remarks/Notes Site information sources
No. of Stories above/below ground18/1
Plan ShapeRectangular
Base Dimensions110' x 108'
Typical Floor Dimensions70' x 98'
Design Date1964
Instrumentation1984. 13 accelerometers, on 4 levels in the building.
Vertical Load Carrying SystemConcrete floors and roof supported on steel frames.
Lateral Force Resisting SystemConcrete floors and roof diaphrams, steel moment resisting frame (floors 4-18), concrete shear walls (floors 1-3).
Foundation TypeConcrete filled steel pipe piles