1. What is length of a curve if the design speed is 85mph. A grades of a road is 3% and -2% and has stopping sight distance is 820ft. Determine whether S<L or S>L

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).