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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| CESMD |
| Information for Strong-Motion Station |
| Sylmar - 6-story County Hospital |
| CGS - CSMIP Station 24514 |
| Earthquakes recorded by this station |
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| (Station Photograph - click to enlarge) | (Sensor Layout - click to see PDF File) |
| Latitude | 34.3259 N |
| Longitude | 118.4459 W |
| Elevation (m) | 443 |
| Site Geology | Deep alluvium over rock (granite) |
| Vs30 (m/sec) | 430 (measured) |
| Site Class | C |
| Remarks/Notes | Site information sources |
| No. of Stories above/below ground | 6/0 |
| Plan Shape | Rectangular (first two stories), Cross-shape (upper four stories) |
| Base Dimensions | 452' x 302' |
| Typical Floor Dimensions | 302' x 302' |
| Design Date | 1976 |
| Instrumentation | 1986. 13 accelerometers, on 4 levels in the building. 3 accelerometers at a reference free-field site. The free-field station was part of the building station (Sta. No. 24514) during the 1994 Northridge earthquake and later became a separate station (Sylmar - County Hospital Grounds, Sta. No. 24763). |
| Vertical Load Carrying System | Concrete slab over metal deck supported on steel frames. |
| Lateral Force Resisting System | Concrete shear walls (lower two stories) and perimeter steel plate shear walls (upper 4 stories). |
| Foundation Type | Spread footings |
| Remarks | The old Olive View Hospital (reinforced concrete structure) damaged in the 1971 San Fernando earthquake was located at the same site. |