Information for Strong-Motion Station
Gilroy - 2-story Hospital
CGS - CSMIP Station 57200
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.0365 N
Longitude 121.5710 W
Elevation (m) 65
Site Geology Deep alluvium
Vs30 (m/sec) 324 (inferred)
Site Class D
Remarks/Notes Site information sources
No. of Stories above/below ground2/0
Plan ShapeU-shaped
Base Dimensions280' x 169'
Typical Floor DimensionsRectangular 254' x 85'
Design Date1987
Instrumentation2003. 10 accelerometers, on 3 levels in the building. 3 accelerometers at a reference free-field site.
Vertical Load Carrying System2 1/2" concrete over 3" steel deck supported by steel beams and columns.
Lateral Force Resisting SystemThe building consists of a main two-story section and two one-story wings. There is no seismic separation between the main section and the two wings. The two one-story wings resist lateral forces with steel moment frames on their perimeters. The 2-sotry section resists lateral forces with steel moment frames on the perimeter in the longitudinal direction (E-W) and four selected steel moment frames on the interior in the transverse (N-S) direction.
Foundation TypeMoment frames and gravity columns supported by concrete spread footings with grade beams. Typical 5" concrete floor slab. Concrete spread footings range from 4'-6" x 4-6" to 9'-9" x 9'-9".. Grade beams are typically 30" wide and 24" deep.
RemarksThis hospital building was instrumented as part of the OSHPD/CSMIP Hospital Instrumentation Project.