A soils testing firm is suggesting that CD testing is not required for a stability analysis of a silty clay compacted embankment soil; rather just CU(bar). Indicating that CD testing is rarely performed. Is there a justification for not performing CD testing for drained conditions on compacted clayey soils (i.e. can CUbar testing be performed instead and would the results be similar)?
My experience says not, but I'm curious how others are addressing)
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