CESMD
Information for Strong-Motion Station
Riverside - 2-story Gov Off. Bldg [Demolished]
CGS - CSMIP Station 13620
Earthquakes recorded by this station
 
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
   
Latitude 33.9790 N
Longitude 117.3730 W
Elevation (m) 259
Site Geology Deep alluvium over rock (granitic)
Vs30 (m/sec) 418 (measured)
Site Class C
Remarks/Notes Site information sources
 
No. of Stories above/below ground2/0
Plan ShapeRectangular
Base Dimensions173' x 66'
Typical Floor Dimensions173' x 66'
Design Date1950
Instrumentation1991. 12 accelerometers, on 3 levels in the building.
 
Vertical Load Carrying SystemWood frame diaphragms (2"x14" wood joists @ 16" oc and 1"x6" diagonal sheathing) supported by steel frame and load bearing RM and concrete walls.
Lateral Force Resisting System2nd floor: 8" concrete block walls with vertical reinforcement and 8" concrete walls in transverse direction only. 1st floor: 10" thick concrete walls on the perimeter and interior walls in the transverse direction only.
Foundation TypeConcrete spread footings supporting the columns and walls.
Remarks--