Calcualate the deflection and slope at A and C of the concrete beam in the figure using virtual work method. Take E = 20.5 x 10^3 MPa and I = 6.75 x 10^8 mm^4. please show complete solution.

The following table shows the stations and ordinates for a mass diagram. The free-haul distance is 600 ft. Overhaul cost is $12 per station yard. (a) Use the method of moments to compute the additional cost that must be paid to the contractor. (b) Sketch the ground profile if the finished grade of this roadway section is level (0 percent).