CESMD |
Information for Strong-Motion Station |
Berkeley; City Hall |
NSMP Station 1812 |
Earthquakes recorded by this station |
Latitude | 37.8693 N |
Longitude | 122.2711 W |
Elevation (m) | 51 |
Site Geology | |
Vs30 (m/sec) | |
Site Class |
No. of Stories above/below ground | 5/0 |
Plan Shape | irregular |
Base Dimensions | -- |
Typical Floor Dimensions | -- |
Design Date | 1938 |
Instrumentation | 2001, 24 accelerometers on three levels of building. |
Vertical Load Carrying System | Concrete slab supported by reinforced beams and columns. |
Lateral Force Resisting System | Originally non-ductile concrete frames with few shear walls, but strengthened by additional shear walls and base isolations. |
Foundation Type | Spread foundation |
Remarks | This building has been seismically isolated in 1999 by using 74 base isolations and some reinforced concrete shear walls |