CESMD |
Information for Strong-Motion Station |
San Francisco - 47-story Office Bldg |
CGS - CSMIP Station 58532 |
Earthquakes recorded by this station |
Ambient Records for CE58532 |
Latitude | 37.7954 N |
Longitude | 122.3960 W |
Elevation (m) | 3 |
Site Geology | Deep alluvium |
Vs30 (m/sec) | - - |
Site Class | E |
Remarks/Notes | Site information sources |
No. of Stories above/below ground | 47/2 |
Plan Shape | Rectangular |
Base Dimensions | 180' x 122' |
Typical Floor Dimensions | Same as base dimensions |
Design Date | 1978 |
Instrumentation | 1987. 18 accelerometers, on 7 levels in the building. |
Vertical Load Carrying System | 2.5" concrete over metal deck supported by steel frames. |
Lateral Force Resisting System | Moment resisting steel frame in both directions and eccentrically braced in only the transverse direction (center two bays). |
Foundation Type | 5' thick reinforced concrete mat supported by composite concrete and steel piles (about 200' long). |
Remarks | There is a three-story RC building adjacent to the high-rise tower and both are separated by a 2" seismic joint. |