Information for Strong-Motion Station
Ventura - 4-story Govt Office Bldg
CGS - CSMIP Station 25353
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 34.2683 N
Longitude 119.2101 W
Elevation (m) 62
Site Geology Deep alluvium
Vs30 (m/sec) 267 (inferred)
Site Class D
Remarks/Notes Site information sources
No. of Stories above/below ground4/1
Plan ShapeRectangular
Base Dimensions382.5' x 119.5'
Typical Floor DimensionsSame as base dimensions
Design Date1976
Instrumentation1979. 12 accelerometers, on 3 levels in the building.
Vertical Load Carrying SystemSteel frame; 3-1/4" light-weight concrete on 3" metal deck (total depth - 6-1/4")
Lateral Force Resisting SystemSteel K bracing, both directions
Foundation Type90'-115' piles; grade beam ties; 6' slab on grade; retaining walls on longitudinal faces
RemarksSoil investigation indicated site had experienced liquefaction; designed to twice UBC (horizontal load factor).