I am looking for reliable numbers for the coefficient of friction between a precast concrete block and gravel, and or soil. This is to provide lateral shear resistance in temporary construction activities. I found some references for cast in place foundations, but the "deadman" counterweight is precast, not cast over the roughened surface. I think of this as a polished concrete block, sitting on a rough surface, just a little bit better than sitting on ball bearings. I need positive anchorage, but I am restricted from penetrating the grade, do to unknowns.
Can anyone help?
Thanks so much in advanced.
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