2008/0169 Response to information request - 71 Seaview Tce Sunshine Beach · 132008.169

                                                                        TODCONSULTING


      footings are to be founded into very dense sands, stiff clays or weathered
      sandstone, at least 5m below any 27° sand slip line projected from the base of the
      slope, and at least 7m below existing ground line, whichever is deeper. Piled
      footings may need to be founded deeper than these levels depending on
      excavation depth and pile loads.

2.0   Introduction

      The following design criteria details the required structural performance criteria
      for the proposed residence. It establishes the overall structural performance
      requirements along with a series of minimum standards for specific design and
      construction technical controls of the works.

      Reference Documentation:

      •     Site Survey Drawings by Lawrence & Partners
      •     Gavin Maddock Design Architectural Drawing 180         Sk206
                                                                   Sk207
                                                                   Sk208
                                                                   Sk209
                                                                   Sk210
                                                                   Sk217
                                                                   Sk220

      •     Geotechnical Reports by SCG dated 24.3.09 and Morrison Geotechnical dated
            September 2009.

3.0   Project Description

      3.1      Scope

               The work covers the entire main house building structure including but not
               limited to CFA (Continuous Flight Auger) concrete and galvanised screw
               steel piled footings, slabs on ground, retaining walls, external pavements,
               temporary and permanent structural steel wall strut framing, structural
               steel supports for claddings, block walls, suspended floors, roofs,
               walkways, stairs and other minor structural items.

               Fully   piled   and   laterally restrained    foundations     support the
               bedroom/terrace/pool building built on a steeper section of sand dune
               towards the eastern boundary. This design will be quite stable and capable
               of withstanding possible on-going downhill slippage of the loose surface
               sands.

                Item 7.0 below provides a more detailed outline of our proposed design
                for the pool/terrace building.

                A significant component of the project is the construction of the
                contiguous piled retaining structures which shall be horizontally strutted
                during excavation by the "top-down" method of constructing the roof slab
                first, and/or using temporary or permanent diagonal steel struts down to

                                                                                           4