oa Civil Engineering = Siviele Ingenieurswese - The design of foundations for roads in South Africa
Mr Lewis's statement 'short-comings of any design method ... have led design engineers to place considerable weight upon other factors in addition to C.B.R. values of saturated soil samples' was unhappily true, but surely engineers were ultimately interested only in strength, other tests being merely a measure of past experience of known strength. It would therefore appear that either the C.B.R. test was invalid, or, as the speaker preferred to believe, the accepted methods of performing the test needed revision.
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