Information for Strong-Motion Station
Mammoth Lakes - 1-story High School Gym
CGS - CSMIP Station 54301
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 37.6411 N
Longitude 118.9625 W
Elevation (m) 2396
Site Geology Alluvium (glacial deposits)
Vs30 (m/sec) 347 (inferred)
Site Class C
Remarks/Notes Site information sources
No. of Stories above/below ground1/0
Plan ShapeRectangular
Base Dimensions110' x 144'
Typical Floor DimensionsSame as base dimensions
Design Date1973
Instrumentation1977. 10 accelerometers on 2 levels in the building. 3 accelerometers at a reference free-field site.
Vertical Load Carrying System3/4" plywood on 2" x 6" joists @ 12" o.c. (longitudinal direction) supported by parallel chord steel trusses (transverse direction) on steel columns.
Lateral Force Resisting SystemHorizontal steel bracing system in plane of lower chord; vertical steel bracing encased in cast-in-place concrete shear walls.
Foundation TypeRC spread footings
Remarks9 miles from the Hilton Fault