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

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      4.4   Deflection Criteria

            a)      Horizontal (Lateral) movement (wind and seismic)
                    Total not greater than Height/500 (at permissible stress loads)
                    Inter-storey not greater than Floor to Floor Height/500 (at
                    permissible stress loads)
            b)      Vertical movement (dead plus live load)
                    Slabs and beams are to he designed to achieve the following
                    maximum deflection criteria:

                                     Incremental Deflection
            General                  Span/500 or l 5mm (whichever is less)

                                     Long Tcrm Deflection
             Slabs                   Span/500 or 15mm (whichever is less)
             Beams                   Span/500 or l 5mm (whichever is less)
             Spandrel Beams          Span/500 or 15mm (whichever is less)
             Total allowable         20mm to end spans
             (Slab + Beam)           20mm to internal spans
             Cantilever              Span/250 or 10mm (whichever is less)
             Pre camber              As required

5.0   Materials Specification

      5.1    Concrete

             Concrete Strengths (generally, unless noted otherwise on drawings)

             It is envisaged the following concrete strengths will be used for various
             elements across the design. taking special care with respect to the highly
             corrosive marine environment.

             Floor slabs and beams                         32 MPa min internal,
                                                           40 MPa external
             Load bearing walls and columns (typical)      32 MPa min internal,
                                                           40 MPa external
             Foundations                                   25 MPa min/40 MPa max
             Pool                                          40 MPa

             External structural concrete elements of the building will have a design
             durability classification B2, which complies with Table 4.3 AS 3600. (40
             MPa concrete with 50mm external cover).

      5.2    Reinforcing Steel

             High strength Ductile Grade 500 MPa reinforcing steel will be used in the
             design.




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