Development Application Part 2 of 2 Planning report Geotechnical report and plans MCU11/0168 & OPW11/0257

    GeoConsulting, Report 115988, July I I                                                                            Page 10
    Lot 34 Marcus Dues Court, Marcus Beach


    Temporary stabilization of the cut embankment may be required to prevent collapse and to provide
    a safe working area in accordance with Workplace Health and Safety.                                  Sheet piling or other
    retention devices are to be considered.


    Excessive earthworks proposed on this site may require an "Operational Works" permit, which must be
    obtained from the Local Authority.


              6.3.2    Filling outside the Residential Footprint
    Placement of fill should be in a prepared manner, with the original surface proof rolled in a
    moist saturated soil condition. Placed fill should also be moist/saturated and machine track rolled. Fill
    batters should be protected from runoff scour by vegetation or matting.


              6.3.3    Retention
    All cut embankments exceeding 1.0 metre in height should be retained and engineer designed. Rigid or
    flexible retention methods can be employed. A spoon drain above the cut area should remove overland
    flow with suitable drainage media placed between the retention system and exposed soil. Unretained cut
    embankments should not grade at less than 1:5 (V:H).


    6.4       Drainage
    Drainage over the allotment is very good, and is towards the road frontage. Runoff should be directed
    away from building construction areas, and disposed of in accordance with the Local Authority's
    requirements into the stormwater system. Water is not to pond in or around footings during or after
    construction. Further, the proposed floor level is not to be less than 225mm above the finished ground
    level, or as required by the relevant Local Authority.


    6.5       Access Ft Driveways
    Driveways and areas for car turning are also to be provided in accordance with the Local Authority's
    requirements.        Earthworks undertaken on sites to provide these areas are as important as the
    earthworks required to create the building area.


    Some cut / filling will probably be required to establish the driveway. The driveway pavement should
    be designed for a subgrade CBR of 5-10.

L
    6.6       Retaining Walls
    All retaining walls over 1.0 metre in height, whether stand-alone or forming part of the proposed
f   residence, are to be engineer designed. Drainage should also form part of the wall design, to remove
    surface and sub-surface water from behind the wall.


     6.7      Foundations
    All founding should be to homogeneous soil types, and based on the amount of earthworks proposed for
    this allotment, into the medium dense SANDS. Piering of the load bearing foundations may be
     required in order to achieve the target stratum. All load bearing elements are to be deepened to bear
     into this layer. Pad footings / piers may be required to bear up to 3.0 metres below the existing surface


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