Information for Strong-Motion Station
Berkeley; City Hall
NSMP Station 1812
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.8693 N
Longitude 122.2711 W
Elevation (m) 51
Site Geology  
Vs30 (m/sec)  
Site Class  
No. of Stories above/below ground5/0
Plan Shapeirregular
Base Dimensions--
Typical Floor Dimensions--
Design Date1938
Instrumentation2001, 24 accelerometers on three levels of building.
Vertical Load Carrying SystemConcrete slab supported by reinforced beams and columns.
Lateral Force Resisting SystemOriginally non-ductile concrete frames with few shear walls, but strengthened by additional shear walls and base isolations.
Foundation TypeSpread foundation
RemarksThis building has been seismically isolated in 1999 by using 74 base isolations and some reinforced concrete shear walls