Glenn,

1) After the conversion to the buried model, yes you would go back and edit the buried model, changing restraints as necessary for your concrete blocks. Remember that CAESAR II doesn't know the model is buried. By running your system through the "buried pipe modeler", it is re-meshed and the bi-linear restraints added. This simulates the continuous beam in the soil.

2) Sorry, but those friction coefficients may take some research on your part.