Design plans · 51993.564.01

                                                                                                                                                                                                                              notes:

                                                                                                                                                                                                                              3.5.1.2 Corrosion protection and compatibility
                                                                                                                                                                                                                              requirements for roofing
                                                                                                                                                                                                                              (a)Metal sheet roofing must be protected from
                                                                                                                                                                                                                              corrosion in accordance with Table 3.5.1.1.
                                                                                                                                                                                                                              (b)Where different metals are used in a roofing
                                                                                                                                                                                                                              system, including flashings, fasteners, guttering,
                                                                                                                                                                                                                              downpipes, etc., they must be compatible with each
                                                                                                                                                                                                                              other as described in Tables 3.5.1.2a to 3.5.1.2d and
                                                                                                                                                                                                                              (i)no lead materials can be used upstream from
                                                                                                                                                                                                                              aluminium/zinc coated materials; and
                                                                                                                                                                                                                              (ii)no lead materials can be used on roofs that form
                                                                                                                                                                                                                              part of a potable (drinking) water catchment area; and
                                                                                                                                                                                                                              (iii)no copper materials can be used upstream from
                                                                                                                                                                                                                              galvanised coated materials.

                                                                                                                                                                                                                              3.5.3.2 Materials
                                                                                                                                                                                                                              Gutters, downpipes and flashings must—
                                                                                                                                                                                                                              (a)be manufactured in accordance with AS/NZS 2179.1
                                                                                                                                                                                                                              for metal; and
                                                                                                                                                                                                                              (b)be manufactured in accordance with AS 1273 for
                                                                                                                                                                                                                              UPVC components; and
                                                                                                                                                                                                                              (c)be compatible with all upstream roofing materials in
                                                                                                                                                                                                                              accordance with 3.5.1.2(b); and
                                                                                                                                                                                                                              (d)not contain any lead if used on a roof forming part
                                                                                                                                                                                                                              of a potable water catchment area.

                                                                                                                                                                                                                              3.5.3.4 Installation of gutters
                                                                                                                                                                                                                              (a)Gutters must be installed with a fall of not less than
                                                                                                                                                                                                                              —
                                                                                                                                                                                                                              (i)1:500 for eaves gutters, unless fixed to metal fascias;
                                                                                                                                                                                                                              and
                                                                                                                                                                                                                              (ii)1:100 for box gutters.
                                                                                                                                                                                                                              (b)Eaves gutters must be—
                                                                                                                                                                                                                              (i)supported by brackets securely fixed at stop ends
                                                                                                                                                                                                                              and at not more than 1.2 m centres; and
                                                                                                                                                                                                                              (ii)be capable of removing the overflow volume
                                                                                                                                                                                                                              specified in Table 3.5.3.3a and Table 3.5.3.3b.
                                                                                                                                                                                                                              (c)Overflow measures in accordance with Table
                                                                                                                                                                                                                              3.5.3.4a

                                                                                                                                                                                                                              3.5.3.5 Downpipes — size and installation
                                                                20° FALL                                                                                                                                                      Downpipes must—
                                                                                                                                                                                                                              (a)not serve more than 12 m of gutter length for each
                                                                20° FALL                                                                                                                                                      down pipe; and
                                                                                                                                                                                                                              (b)be located as close as possible to valley gutters;
                                                                                                                                                                                                                              and
                                                                                                                                                                                                                              (c)be selected in accordance with the appropriate
                                                                                                                                                                                                                              eaves gutter section as shown in Table 3.5.3.2a to
                                                                                                                                                                                                                              Table 3.5.3.2c.

                                                                                                                                                                                                                              3.5.1.3 Minimum pitches for metal sheet roofing
                                                                                                                                                                                                                              profiles
                                                                                                                                                         2° FALL
                                                                                                                                                                                                                              metal roofing 5○ or more will be corrugated custom
                                                                                                                                                                                                                              orb uno

                                                                                                                                                                                                                              metal roofing between 2○ - 5○ will be trapezoidal
                                                                                                                                                                                                                              profile or similar

                                                                                                                                                                                                                              metal roofing at 1○ will be a concealed fastened
                                                                                                                                                                                                                              profile or similar
                                                                                                             b
                                                                                                         a




                                                                                                                                                                                                                         0         1m                                                      5m




                                                                                              Revision                                                                       Proposed Residence Address              Client                               Scale
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                                                                                                                                                                             20.141                       01.05.23   DA Approval                          Roof Plan