I have to do a preliminary levee design for a project, but the borrow source for the clay has not been identified. I have found typical values for undrained shear strengths, but I'm having trouble finding typical drained values. I don't anticipate any issues with stability (relatively short compacted clay levee on sand/ bedrock foundation with relatively flat slopes). However, I'd like to assume reasonable values for the sudden drawdown & long term analysis.
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