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

                                                                       TOD :,NSULTING


      5.3   Formwork

            Formwork class is to be in accordance with the architectural specifications
            and the relevant Australian Standards. Tolcrances are to be suitable for
            the purpose to which they are to be used, but shall not exceed a maximum
            deviation of 6mm measured over a 3 meter straight edge. Permanent steel
            formwork (Condek or similar) may be used in internal areas to support
            Suspended concrete slabs, and must be rigidly propped in accordance with
            the supplier's written specification.

      5.4   Structural Steel

            Structural steel elements of the building will be designed in accordance
            with the relevant codes. These elements will have a design durability
            which complies with AS/NZS 4100. All external steel and exposed
            internal steel shall be hot dipped galvanised and painted with 2 coats of an
            approved high-build zinc-rich epoxy paint.

      5.5   Screw Piling

            All screw piling is to be hot dipped galvanised and epoxy painted for the
            upper 2m, as well as tilled with concrete grout.

6.0   Structural Framing System

      6.1   General Structural System:

            The proposed building is a two-storey reinforced concrete structure with a
            reinforced concrete contiguous piled retaining wall system to support
            excavations of approximately 2-5m. A mixture of grout replacement piles
            and concrete-filled galvanised screw piles are proposed to support vertical
            loads, and a range of raking galvanised screw piles or tie-back anchors are
            intended to provide horizontal stability to the foundation by acting in
            either tension or compression.

            Structural System Summary:

            •    600mm diameter contiguous CFA piled retaining walls, founded
                 sufficiently below excavation level to provide vertical capacity and
                 passive resistance to horizontal soil pressures
             •   Isolated 600mm diameter CFA concrete piles
             •   Screw piles ranging from 50-80T to support column loads
             •   Raking screw piles to provide horizontal resistance to soil loads, wind
                 and earthquake loads
             •   Reinforced concrete ground beams and slabs will be used to provide
                 adequate permanent horizontal "strutting" of retaining walls and
                 rotational stability to pile/slab/upper column connections, and to resist
                 bending moments caused by pile eccentricity
             •   Sub-floor areas will be drained to relieve any potential build-up of
                 ground water pressure


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