Agriculture Reference
In-Depth Information
contour is pulled down and is drawn over existing contours, creating
fill. Where the proposed contours are moved to higher elevations, these
contours represent cut that is being proposed. The area created between
the existing and proposed contour is what will be measured, followed
by a calculation of the volume of earth moved either as fill or cut. The
grading proposed in Figure 15.3 is meant to create a level shelf at 65.5
elevation. Contours 67, 68, and 69 have been moved uphill, creating cut,
or the removal of material. Some of this material can then be used to fill
downhill over contours 66, 65, 64, 63, and 62.
contour method for eStimatinG
cut and fiLL
The simulation in Figure 15.4 shows how fill is created when moving
contours downhill from their original location. The material to create
this fill could come from another location on-site that requires cut, or
80
75
70
65
B
C
60
55
50
A
Figure 15.4
Dashed contour lines are existing contours, and solid lines are proposed
contours. The shaded areas (A, B, and C) represent fill.
