Information for Strong-Motion Station
San Rafael - 5-story Hospital
CGS - CSMIP Station 58755
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.9474 N
Longitude 122.5367 W
Elevation (m) 8
Site Geology Shallow alluvium over rock (sedimentary)
Vs30 (m/sec) 960 (measured)
Site Class B
Remarks/Notes Site information sources
No. of Stories above/below ground5/partial
Plan ShapeIrregular
Base Dimensions220' x 220'
Typical Floor DimensionsTriangular 143' x 143' x 200'
Design Date1986 (OSHPD # HF840021)
Instrumentation1997. 12 accelerometers, on 4 levels in the building. 3 accelerometers at a reference free-field site.
Vertical Load Carrying System10" concrete flat slab supported by steel columns inside the triangular portion and 2.5" concrete over 3" metal deck outside the triangular portion.
Lateral Force Resisting SystemPerimeter steel moment frames along the three sides of the building.
Foundation Type18" and 24" diameter cast-in-place drilled concrete piers in groups of one to four piers.
RemarksThis hospital building was instrumented as part of the OSHPD/CSMIP Hospital Instrumentation Project