Information for Strong-Motion Station
Los Angeles; UCLA Factor Bldg
NSMP Station 5405
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 34.0668 N
Longitude 118.4420 W
Elevation (m) 121
Site Geology  
Vs30 (m/sec)  
Site Class  
No. of Stories above/below ground15/2
Plan ShapeRactangular
Base Dimensions73 x 126 ft
Typical Floor Dimensions73 x 126 ft
Design Datelate 1970s
Instrumentation1994, 72 accelerometers on 18 levels of the building.
Vertical Load Carrying System6.25" concrete fill over 3" steel deck supported by a system of steel beams and steel columns.
Lateral Force Resisting SystemSteel special moment-resisting frame.
Foundation TypeConcrete bell caissons supported by spread foundations.
RemarksStructural design was based on the 1973 Uniform Building Code. Reference: Skolnik, D., Lei, Y., and Wallace, J.W., 2006, Identification, model updating, and response prediction of an instrumented 15-story steel-frame building, Earthquake Spectra, v. 22.3, p. 781-802, https://doi.org/10.1193/1.2219487.