08/0169 Information Response to DERM - 71 Seaview Terrace Sunshine Beach · 132008.169

                                                                TOOCONSULTING


      •   Foundations and Screw Piling
          Once the main bulk excavation levels have been achieved, stable
          terracing can be prepared to expand access, parking and material
          storage on-site.
          The Screw Piling Rig can be brought in on rubber mats from Seaview
          Terrace, and piles delivered in short lengths and welded together on-
          site as lengths of pile are installed.

      •   Pool/TerraceBedroom 5 Building
          This area is directly connected to the main house construction by an
          enclosed corridor and will be securely founded on a deep contiguous
          piled wall and on deep screw piles laterally tied back by raking screw
          piles to withstand the anticipated downhill sand pressure and other
          lateral loads such as earthquakes and wind loadings. Temporary
          access to this area will be limited by existing vegetation which must
          be preserved, so it is anticipated that a crane will be used to deliver
          materials to this area in conjunction with temporary piled stair/ramp
          access.

      •   Structural Works
          The remainder of the foundations, floor beams, slabs, columns etc, can
          be constructed by traditional methods with materials being delivered
          readily via the access driveway as required. The length of construction
          materials will be limited by the size of delivery vehicles which can
          safely access the bitumen driveway.

      •   Construct elevated timber walkway by using either temporary screw
          piles and access platform or mini bentonite concrete piling rig (2m x
          1.2m) to avoid damage to existing vegetation.

3.5   Construction of Retaining Walls and Excavations

      The majority of the site is sloping at approximately 26° towards north-east
      while the south-east and north-west areas of the block slope much more
      steeply at around 32° towards the east.

      Any material above a 27° line projected from the base of the hill of slope
      is considered unstable and totally unsuitable for supporting any permanent
      foundations or landscape structures.

      The bedrooms and pool/terrace structure will be located on a steep
      unstable area and will hence be supported on deep piled foundations
      which will be laterally restrained by deep tension piles, sufficiently strong
      to withstand the potential slippage of sand downhill against the footings
      and piles.

      The area along the western boundary slopes at approximately 26° and up
      to 30° at the north-west corner, however the area uphill of to McAnally
      Drive. The area west and uphill of the site is occupied by light-weight
      timber residential structures, and a reinforced concrete pool supported on
      deep piled foundations.

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