Information for Strong-Motion Station
Richmond - 3-story Govt Office Bldg
CGS - CSMIP Station 58503
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.9375 N
Longitude 122.3433 W
Elevation (m) 17
Site Geology Deep alluvium
Vs30 (m/sec) 280 (measured)
Site Class D
Remarks/Notes Site information sources
No. of Stories above/below ground3/1
Plan ShapeRectangular
Base Dimensions67' x 258'
Typical Floor DimensionsSame as base dimensions
Design Date1948
Instrumentation1986. 13 accelerometers, on 4 levels in the building. 3 accelerometers at a reference free-field site.
Vertical Load Carrying SystemConcrete slab supported by reinforced concrete beams and columns.
Lateral Force Resisting SystemReinforced concrete moment resisting frame with core and perimeter shear walls.
Foundation TypeSpread footings