Information for Strong-Motion Station
Walnut Creek - 3-story Hospital
CGS - CSMIP Station 58199
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.8916 N
Longitude 122.0587 W
Elevation (m) 46
Site Geology Alluvium over rock
Vs30 (m/sec) 325 (inferred)
Site Class D
Remarks/Notes Site information sources
No. of Stories above/below ground3/1
Plan ShapeRectangular
Base Dimensions290 x 96 ft (88.4 x 29.3 m)
Typical Floor Dimensions290 x 116 ft (88.4 x 35.4 m)
Design Date1996
Instrumentation2003. 16 accelerometers, on 6 levels in the building.
Vertical Load Carrying SystemConcrete slabs over steel deck supported on steel beams and columns.
Lateral Force Resisting SystemSteel moment frames in both directions and concrete shear walls at the basement.
Foundation TypeDrilled-in concrete piers and continuous concrete footings.
RemarksThis hospital building was instrumented as part of the OSHPD/CSMIP Hospital Instrumentation Project.