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A matter of prime concern in soil dynamics is the prediction of the dynamic response of oscillating machinery supported on spread footings. This leads naturally to testing model footings with the hope of predicting the response of full-scale systems. At the present state of the art, model footing tests give the most reliable assessment of the anticipated response of larger systems. This technique is not entirely infallible, primarily because of our lack of familiarity with such testing, its philosophy, and correlation with full-scale results. There is a great need at the present time for the accumulation of reliable data to serve as a basis for the development of a general theory. Even limited data, taken for the solution of a particular problem, is a useful contribution if the data are reliably and adequately reported. This paper will deal with model footing testing and data reduction techniques with the presentation of some typical data taken at a remote site in the Marshall Islands.
Alai, J A
Radio Corporation of America, Moorestown, N. J.