(a) Three borrow pits are available for a highway embankment project. Explain the procedure for the selection of the proper borrow pit. How do you use compaction communicate with the contractor? How do you make sure that the contractor work meeting your specifications? (b) The results of a standard Proctor test are given below. Determine the maximum dr weight of compaction and the optimum moisture content.
(c) For the soil, if G-2.72, determine the void ratio and the degree of saturation at op moisture content.
Volume of Weight of Moisture content
Proctor mold( ft3) wet soil in the mold (lb) %
1/30 3.26 8.4
1/30 4.15 10.2
1/30 4.67 12.3
1/30 4.02 14.6
1/30 3.63 16.8