Information for Strong-Motion Station
Fremont - 3-story Police Dept Bldg
CGS - CSMIP Station 57783
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.5529 N
Longitude 121.9689 W
Elevation (m) 13
Site Geology Alluvium
Vs30 (m/sec) - -
Site Class C/D
Remarks Site information sources
No. of Stories above/below ground3/0
Plan ShapeRectangular
Base Dimensions142' x 245'
Typical Floor DimensionsVaries (142' x 147' at roof)
Design Date1992-93
Instrumentation1999. 15 accelerometers, on 4 levels in the building. 3 accelerometers at a reference free-field site.
Vertical Load Carrying System12" thick reinforced concrete flat slab supported by pile caps at the 1st floor. 2.5" to 5.5" thick concrete over 3" metal deck supported by steel beams and columns for the remaining floors.
Lateral Force Resisting SystemMultiple steel moment frames in both directions from 1st to 3rd story. Steel braced frames and moment frames in the penthouse.
Foundation Type14" square precast, prestressed concrete piles up to 64' long. Individual columns and frames are supported on groups of 1 to 46 piles. Building columns are connected to the pile caps with steel base plates and anchor bolts.
RemarksThis building houses the Police Administration and 911 Response Center. It is located roughly 150' east of the Hayward Fault. It was designed as per 1991 UBC.