Fundamentals of Transportation/Earthwork/Solution

40px|left|TProblemProblem: Given the end areas below, calculate the volumes of cut (in cubic meters) and fill between stations 0+00 and 1+50. Determine the true amount of excess cut or fill to be removed. 0+00: Fill = 60 0+50: Fill = 50 0+75: Cut = 0, Fill = 25 1+00: Cut = 10, Fill = 5 1+15: Cut = 15, Fill = 0 1+50: Cut = 30 40px|left|ExampleSolution: Two different methods need to be used here to compute earthwork volumes along the five strips. The average end area method can be used for non-zero sections. The pyramid method needs to be used for areas with zero ends. For 0+00 to 0+50, use average end area: For 0+50 to 0+75, use average end area: For 0+75 to 1+00, use the average end area method for the fill section and the pyramid method for the cut section: For 1+00 to 1+15, use the pyramid method for the fill section and the average end area method for the cut section: For 1+15 to 1+50, use the average end area method: The sums of both cut and fill can be found: Fill = 4087.5 cubic-meters Cut = 1058.3 cubic-meters Thus, 3029.2 cubic-meters of dirt are needed to meet the earthwork requirement for this project. /Solutions