To determine the amount of cut or fill, which pair of rod readings is used?

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Multiple Choice

To determine the amount of cut or fill, which pair of rod readings is used?

To know how much earth to move at a point, you compare the proposed finished elevation with the existing ground. Do this with two rods: place a grade rod at the point along the planned finish grade and a ground rod on the existing surface. Read the grade rod and the ground rod, then subtract the ground rod reading from the grade rod reading. The result is the vertical difference between the finished grade and the existing ground. A positive difference means you must add material (fill) to reach the finish grade, while a negative difference means you must remove material (cut) to bring the ground down to the finish grade. This direct grade-versus-existing-ground comparison gives the amount of cut or fill you need.

To know how much earth to move at a point, you compare the proposed finished elevation with the existing ground. Do this with two rods: place a grade rod at the point along the planned finish grade and a ground rod on the existing surface. Read the grade rod and the ground rod, then subtract the ground rod reading from the grade rod reading. The result is the vertical difference between the finished grade and the existing ground. A positive difference means you must add material (fill) to reach the finish grade, while a negative difference means you must remove material (cut) to bring the ground down to the finish grade. This direct grade-versus-existing-ground comparison gives the amount of cut or fill you need.

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