CESMD |
Information for Strong-Motion Station |
Long Beach - City Hall [Demolished] |
CGS - CSMIP Station 14533 |
Earthquakes recorded by this station |
Latitude | 33.7682 N |
Longitude | 118.1955 W |
Elevation (m) | 5 |
Site Geology | Deep alluvium |
Vs30 (m/sec) | 322 (measured) |
Site Class | D |
Remarks/Notes | Site information sources |
No. of Stories above/below ground | 15/1 |
Plan Shape | Square |
Base Dimensions | 106' x 106' |
Typical Floor Dimensions | Same as base dimensions |
Design Date | 1973 |
Instrumentation | 1987. 16 accelerometers, on 4 levels in the building. 3 accelerometers at a reference free-field site. |
Vertical Load Carrying System | Concrete slab on metal deck supported on steel frames; steel frame towers on four corners of the square with precast concrete exterior panels. |
Lateral Force Resisting System | Moment-resistant steel frames. |
Foundation Type | Spread footings with piers under each column. |
Remarks | Building was designed for twice the lateral force specified by the code. |