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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| CESMD |
| Information for Strong-Motion Station |
| Seal Beach - 8-story Office Bldg |
| CGS - CSMIP Station 14578 |
| Earthquakes recorded by this station |
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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| Latitude | 33.7567 N |
| Longitude | 118.0851 W |
| Elevation (m) | 5 |
| Site Geology | Alluvium |
| Vs30 (m/sec) | 236 (inferred) |
| Site Class | D |
| Remarks/Notes | Site information sources |
| No. of Stories above/below ground | 8/1 |
| Plan Shape | Rectangular |
| Base Dimensions | 244'-6" x 136'-6" |
| Typical Floor Dimensions | 244'-6" x 136'-6" |
| Design Date | 1966 |
| Instrumentation | 1989. 22 accelerometers, on 5 levels in the building. 3 accelerometers at a reference free-field site and 6 accelerometers at a nearby ground and downhole site. |
| Vertical Load Carrying System | Reinforced concrete frames supporting concrete waffle slab floors and roof. |
| Lateral Force Resisting System | Distributed moment-resisting non-ductile concrete frame. |
| Foundation Type | Cast in place reinforced concrete piles; 3 feet diameter and about 50 feet long. |
| Remarks | In 1989 the building was seismically strengthened. Exterior ductile concrete moment frames were added and isolators were installed at the first story. |