Information for Strong-Motion Station
Redlands - 7-story Commercial Bldg
CGS - CSMIP Station 23481
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 34.0557 N
Longitude 117.1791 W
Elevation (m) 414
Site Geology Deep alluvium
Vs30 (m/sec) 250 (inferred)
Site Class D
Remarks/Notes Site information sources
No. of Stories above/below ground7/1
Plan ShapeIrregular Base, Rectangular Tower
Base Dimensions250' x 228'-2.5"
Typical Floor Dimensions140' x 93'
Design Date1980
Instrumentation1984. 13 accelerometers, on 4 levels in the building.
Vertical Load Carrying System2.5" concrete slab on steel deck, supported by steel beams, girders and columns.
Lateral Force Resisting SystemPerimeter steel moment frame
Foundation TypeSpread footings