A grading diagram with analysis of contours to indicate ridges, cliffs, ravine, valley, and other slopes.
Cut and fill
It is best to balance the amounts of cut and fill on a site in order to avoid having to import and export material. It is usual to direct surfacewater away from the surface plane, which is the ground-floor slab of a proposed building. Ground levels around a building should be 6 in below the finished floor level. This can be done by:
- placing the floor slab on fill: this will raise the building above a slope and may make it visually prominent;
- raising the floor slab significantly above the finished ground: this may be particularly appropriate on steep slopes and where limited disturbance is desirable—the foundations may take the ...