I am looking for information on earth dams/cofferdams built by dumping in the water. The question of interest is what slope would the material under water be if dumped from a barge or by end-dumping from trucks. The material could be rock fill, low plasticity clayey silt (50-60% fines) and sand and gravel. The expected deposition depth is approx. 70 ft..
I would appreciate if you could share your experience and/or provide me with the relevant references.
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