7. MINOR REGRADING OR LANDSCAPING

This is the process of re-profiling surface areas between structures and surrounding constraints such as roads and boundaries. This minor regrade is often carefully designed to minimise in order of priority, retaining walls, tanking, under-building, banks and soil movement. However, draw the Engineer's attention to any opportunities to reduce these items while maintaining acceptable bank slopes, gradients for vehicles and pedestrians etc. Do not make unapproved changes.

Plan operations to reduce double handling of material and to prevent unacceptable contamination by builders' rubbish. Where excavated material is to be used as fill elsewhere, plan to excavate, transport and fill in one operation whenever feasible. Do not disturb roots of trees to be preserved nor place excessive fill around such trees.

The maintenance of finished ground level at least 150mm below any DPC is essential. When turves are to be laid over regraded areas, ensure that sufficient allowance is made close to buildings. Where banks and slopes are to be formed, ensure that the minimum widths of flat area adjacent to buildings (1m) and footpaths (0.75m) are maintained. Also, where rotary clothes driers are provided in private development there must be no more than 300mm fall in any direction over the area covered by the drier.

Surplus and poor quality fill may often be used in open space areas provided that the final surface is adequately drained and stable. Where there is a deficit of fill material to complete the designed regrade, notify the Engineer as soon as possible so that re-design can include the largest possible area.