Information for Strong-Motion Station
Santa Barbara - 3-story UCSB Office Bldg
CGS - CSMIP Station 25213
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 34.4152 N
Longitude 119.8469 W
Elevation (m) 14
Site Geology Thin alluvium over rock (sedimentary)
Vs30 (m/sec) - -
Site Class D
Remarks Site information sources
No. of Stories above/below ground3/0
Plan ShapeRectangular
Base Dimensions34' x 240'
Typical Floor DimensionsSame as base dimensions.
Design Date1960
Instrumentation1975. 9 accelerometers, on 3 levels in the building. 3 accelerometers at a reference free-field site.
Vertical Load Carrying System2-1/2" RC slab supported by RC joists spanning between RC floor beams running in transverse direction; floor beams supported by 14"x10" RC interior columns & RC and masonry block exterior columns."
Lateral Force Resisting SystemAfter strengthening: RC shear walls in both directions.
Foundation TypeCaissons under exterior columns with tie-beams. 4" RC slab.
RemarksBuilding originially designed to 1/10th code seismic force. Strengthened in 1975.