Information for Strong-Motion Station
San Ramon - 3-story Office Bldg
CGS - CSMIP Station 57474
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.7577 N
Longitude 121.9585 W
Elevation (m) --
Site Geology Deep alluvium over rock
Vs30 (m/sec) 370 (measured)
Site Class C/D
Remarks/Notes Site information sources
No. of Stories above/below ground 3/1
Plan ShapeRectangular
Base Dimensions217 ft x 237 ft
Typical Floor Dimensions217 ft x 237 ft
Design Date1982
Instrumentation2010, 15 accelerometers on 5 levels, and 3 at a free-field.
Vertical Load Carrying SystemConcrete over steel deck supported by steel beams and columns.
Lateral Force Resisting SystemSingle-diagonal eccentrically braced steel frames at all above-grade levels, one bay in from the perimeter on each side of the building. Concrete shear walls provide the resistances for the basement level.
Foundation TypeSteel columns are supported by continuous concrete footings tied with grade beams at the perimeter and EBF gridlines. Interior steel gravity columns are supported by concrete spread footings.
RemarksThe building design conforms to the 1979 Uniform Building Code.