| 1. Digitize the existing and proposed grades in each
cross section for Phase 1 as you normally do; however, you must digitize the proposed
surface from the far left to far right, even if you have to superimpose portions of the
proposed surface right on top of the existing surface (Figure 1). The results will reflect
the cut and fill required to accomplish the work of Phase 1. 2. Make a copy of the job file. 3. Delete the existing surface in each cross section, then enter the proposed surface as though it were the existing surface (Figure 2). The results will reflect the cut and fill required to accomplish the work of Phase 2. NOW HERE'S THE "RUB": Any cut quantities calculated in Phase 2 must be considered as fill, and any fill quantities calculated must be considered as cut, since we have reversed the roles of the existing and proposed surfaces. 4. If Phase 3 must be run, make a copy of Phase 2, delete the Phase 2 proposed grades, then digitize Phase 3 proposed grades (Figure 3). The results will reflect the cut and fill required to accomplish the work of Phase 3. |
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