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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| CESMD |
| Information for Strong-Motion Station |
| Costa Mesa - 5-story City Hall |
| CGS - CSMIP Station 13214 |
| Earthquakes recorded by this station |
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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| Latitude | 33.6630 N |
| Longitude | 117.9028 W |
| Elevation (m) | 21 |
| Site Geology | Deep alluvium |
| Vs30 (m/sec) | - - |
| Site Class | D |
| Remarks/Notes | Site information sources |
| No. of Stories above/below ground | 5/partial |
| Plan Shape | Rectangular |
| Base Dimensions | 167 x 204 ft (50.9 x 62.2 m) |
| Typical Floor Dimensions | 67 x 200 ft (20.4 x 61.0 m) |
| Design Date | 1965(original), 2000(retrofit) |
| Instrumentation | 2003, 24 accelerometers on 6 levels and 3 at free-field. |
| Vertical Load Carrying System | Concrete flat slabs supported on concrete columns. |
| Lateral Force Resisting System | Concentrically braced steel frames on the exterior of the four sides of the building. |
| Foundation Type | Concrete spread footings with grade beams. Drilled concrete pier foundation for the braced steel frames. |
| Remarks | The building was instrumented in 2003 with CISN funding. |