CESMD |
Information for Strong-Motion Station |
San Francisco - 13-story Office Bldg |
CGS - CSMIP Station 58336 |
Earthquakes recorded by this station |
Latitude | 37.7911 N |
Longitude | 122.3933 W |
Elevation (m) | -- |
Site Geology | Alluvium |
Vs30 (m/sec) | 347 (inferred) |
Site Class | D |
Remarks/Notes | Site information sources |
No. of Stories above/below ground | 13/0 |
Plan Shape | square |
Base Dimensions | 132 x 132 ft |
Typical Floor Dimensions | 132 x 132 ft |
Design Date | 1978, 2003 (Strengthened) |
Instrumentation | 2008, 18 accelerometers on 7 levels. |
Vertical Load Carrying System | Concrete slabs supported by concrete beams, columns and shear walls. |
Lateral Force Resisting System | Perimeter concrete moment resisting frames and interior concrete shear walls. During seismic strengthening, steel buckling restrained braces were installed on perimeter moment frames of the first three stories. |
Foundation Type | Pile foundation. |
Remarks | Voluntary seismic strengthening was completed in 2006. |