049_Duplex_27 Grant St Noosa - Construction Issue C · MCU21/0020.01

                         ROOFS (INCLUDING VERANDA AND ATTACHED CARPORT ROOFS, PENETRATIONS, EAVES, FASCIAS,                                                                                          (e) Flashing elements of tubular skylights may be of a fire-retardant material, provided                                                                          b)     Framing
                         GABLES, GUTTERS AND DOWNPIPES)                                                                                                                                                  the roof integrity is maintained by an under-flashing of a material having a                                                                                         Framing of verandas, decks, ramps or landings (i.e., bearers and joists) shall be—
                                                                                                                                                                                                         flammability index no greater than 5.
                         1. General                                                                                                                                                                  (f) Evaporative cooling units shall be fitted with non-combustible butterfly closers as close                                                                            i)      of non-combustible material; or
                         The following apply to all types of roofs and roofing systems:                                                                                                                  as practicable to the roof level or the unit shall be fitted with non-combustible covers                                                                             ii)     of bushfire-resisting timber (refer to the table at the end of this document);or
                                                                                                                                                                                                         with a mesh or perforated sheet with a maximum aperture of 2 mm, made of                                                                                             iii)    a combination of Items (i) and (ii) above.
                              (a) roof tiles, roof sheets and roof-covering accessories are to be non-combustible.                                                                                       corrosion-resistant steel, bronze or aluminium.
                              (b) the roof/wall junction is to be sealed to prevent openings greater than 3 mm, either                                                                               (g) Vent pipes made from PVC are permitted.                                                                                                                       c)     Decking, stair treads and the trafficable surfaces of ramps and landings
                                  by the use of fascia and eaves linings or by sealing between the top of the wall and the                                                                                                                                                                                                                                                    Decking, stair treads and the trafficable surfaces of ramps and landings shall be—
                                  underside of the roof and between the rafters at the line of the wall.                                                                                      6. Eaves linings, fascias and gables
                              (c) roof ventilation openings, such as gable and roof vents, are to be fitted with ember                                                                        The following apply to eaves linings, fascias and gables:                                                                                                                       i)      of non-combustible material; or
                                  guards made of non-combustible material or a mesh or perforated sheet with a                                                                                                                                                                                                                                                                ii)     of bushfire-resisting timber (refer to the table at the end of this document);or
                                  maximum aperture of 2 mm, made of corrosion-resistant steel, bronze or aluminium.                                                                                  (a) Gables shall comply with the requirements for external walls above.                                                                                                  iii)    a combination of Items (i) and (ii) above.
                                                                                                                                                                                                     (b) Eaves penetrations shall be protected the same as for roof penetrations, as
                         2. Tiled roofs.                                                                                                                                                                 specified for roof penetrations.                                                                                                                      4)      Balustrades, handrails or other barriers
                         Tiled roofs shall be fully sarked. The sarking shall—                                                                                                                       (c) Eaves ventilation openings greater than 3 mm shall be fitted with ember guards made                                                                           Those parts of the handrails and balustrades less than 125 mm from any glazing or any
                                                                                                                                                                                                         of non-combustible material or a mesh or perforated sheet with a maximum aperture                                                                             combustible wall shall be—
                              (a) be located on top of the roof framing, except that the roof battens may be fixed above                                                                                 of 2 mm, made of corrosion-resistant steel, bronze or aluminium.
                                  the sarking;                                                                                                                                                           Joints in eaves linings, fascias and gables may be sealed with plastic joining strips or                                                                             i)      of non-combustible material; or
                              (b) cover the entire roof area including ridges and hips; and                                                                                                              timber storm moulds.                                                                                                                                                 ii)     of bushfire-resisting timber (refer to the table at the end of this document);or
                              (c) extend into gutters and valleys.                                                                                                                                                                                                                                                                                                            iii)    a combination of Items (i) and (ii) above.
                                                                                                                                                                                                             NOTE: The Standard does not provide construction requirements for fascias,
                         3. Sheet roofs                                                                                                                                                                      bargeboards and eaves linings.                                                                                                                            Those parts of the handrails and balustrades that are 125 mm or more from the building
                         Sheet roofs shall—                                                                                                                                                                                                                                                                                                                            have no requirements.
                                                                                                                                                                                              7. Gutters and downpipes
                              (a) be fully sarked, except that foil-backed insulation blankets may be installed over the                                                                      The Standard does not provide material requirements for—                                                                                                         WATER AND GAS SUPPLY PIPES
                                  battens; and
                              (b) have any gaps greater than 3 mm (such as under corrugations or ribs of sheet roofing and                                                                           (a) gutters, with the exception of box gutters; and                                                                                                       Above-ground, exposed water and gas supply pipes are to be metal.
                                  between roof comp                                                                                                                                                  (b) downpipes.
                                                                                                                                                                                                                                                                                                                                                               BUSH FIRE RESISTING SPECIES
BAL construction notes




                                   (i)   a mesh or perforated sheet with a maximum aperture of 2 mm, made of corrosion-                                                                       If installed, gutter and valley leaf guards shall be non-combustible. Box gutters shall be                                                                       The following species have been tested and meet the requirements for a bush fire resisting
                                         resistant steel, bronze or aluminium; or                                                                                                             non-combustible and flashed at the junction with the roof with non-combustible material.                                                                         timber species:
                                   (ii) mineral wool; or
                                   (iii) other non-combustible material; or                                                                                                                   VERANDAHS, DECKS, STEPS, RAMPS AND LANDINGS                                                                                                                      Ash silvertop          (Eucalyptus sieberi)
                                   (iv) a combination of any of Items (i), (ii) or (iii) above.                                                                                                                                                                                                                                                                Blackbutt              (Eucalyptus pilularis)
                                                                                                                                                                                              1) General                                                                                                                                                       Gum, red, river        (Eucalyptus camaldulensis)
                                   Note: Sarking is used as a secondary form of ember protection for the roof space to                                                                                                                                                                                                                                         Gum, spotted           (Corymbia maculata/Corymbia henryi)
                                   account for minor gaps that may develop in sheet roofing.                                                                                                  Decking may be spaced. There is no requirement to enclose the subfloor spaces of verandas,                                                                       Lemon-scented Gum (Corymbia citriodora)
                                                                                                                                                                                              decks, steps, ramps or landings.                                                                                                                                 Ironbark, Red Ironbark (Eucalyptus sideroxylon)
                         4. Verandah, carport and awning roofs                                                                                                                                                                                                                                                                                                 Kwila (Merbau)         (Intsia bijuga)
                         The following apply to veranda, carport and awning roofs:                                                                                                            2) Enclosed subfloor spaces of verandas, decks, steps, ramps and landings                                                                                        Turpentine             (Syncarpia )

                              (a) A veranda, carport or awning roof forming part of the main roof space shall meet all the                                                                           a)      Materials to enclose a subfloor space
                                  requirements for the main roof.                                                                                                                                            The subfloor spaces of verandas, decks, steps, ramps and landings are considered to
                              (b) A veranda, carport or awning roof separated from the main roof space by an external wall                                                                                   be ‘enclosed’ when —
                                  shall have a non-combustible roof covering.
                                                                                                                                                                                                             i)   the material used to enclose the subfloor space complies with the standards for
                                   NOTE: There is no requirement to line the underside of a veranda, carport or awning roof                                                                                       external walls above; and
                                   that is separated from the main roof space.                                                                                                                               ii) all openings greater than 3 mm are screened with a mesh or perforated sheet
                                                                                                                                                                                                                  with a maximum aperture of 2 mm, made of corrosion-resistant steel, bronze or
                         5. Roof penetrations                                                                                                                                                                     aluminium.
                         The following apply to roof penetrations:                                                                                                                                   b)      Supports
                                                                                                                                                                                                             The Standard does not provide construction requirements for support posts, columns,
                              (a) Roof penetrations, including roof lights, roof ventilators, roof-mounted evaporative cooling                                                                               stumps, stringers, piers and poles.
                                  units, aerials, vent pipes and supports for solar collectors, shall be adequately sealed at the                                                                    c)      Framing
                                  roof to prevent gaps greater than 3 mm. The material used to seal the penetration shall be                                                                                 The Standard does not provide construction requirements for the framing of verandas,
                                  non-combustible.                                                                                                                                                           decks, ramps or landings (i.e., bearers and joists).
                              (b) Openings in vented roof lights, roof ventilators or vent pipes shall be fitted with ember guards                                                                   d)      Decking, stair treads and the trafficable surfaces of ramps and landings shall be—
                                  made from a mesh or perforated sheet with a maximum aperture of 2 mm, made of corrosion-
                                  resistant steel, bronze or aluminium. This requirement does not apply to the exhaust flues of                                                                              i)     of non-combustible material; or
                                  heating or cooking devices with closed combustion chambers. In the case of gas appliance                                                                                   ii)    of bushfire-resisting timber (refer to the table at the end of this document); or
                                  flues, ember guards shall not be fitted.                                                                                                                                   iii)   a combination of Items (i) and (ii) above.

                                   NOTE: Gasfitters are required to provide a metal flue pipe above the roof and terminate                                                                    3) Unenclosed subfloor spaces of verandas, decks, steps, ramps and landings
                                   with a certified gas flue cowl complying with AS 4566. Advice may be obtained from State
                                   gas technical regulators.                                                                                                                                         a)      Supports
                                                                                                                                                                                                             Support posts, columns, stumps, stringers, piers and poles shall be—
                              (c) All overhead glazing shall be Grade A safety glass complying with AS 1288.
                              (d) Glazed elements in roof lights and skylights may be of polymer provided a Grade A safety                                                                                   i)     of non-combustible material; or
                                  glass diffuser, complying with AS 1288, is installed under the glazing. Where glazing is an                                                                                ii)    of bushfire-resisting timber (refer to the table at the end of this document); or
                                  insulating glazing unit (IGU), Grade A toughened safety glass minimum 4 mm thickness,                                                                                      iii)   a combination of Items (i) and (ii) above.
                                  shall be used in the outer pane of the IGU.




                                                                                                                                                                                                                                                                                                                                                             No.                      Description                                         Date
                                                                                                                                                                                                                                                                                                                                                         A              Construction Issue C                                          11/03/2022                  Project number               Scale at A3
                                                                                                                                                 Project                                                  Client                                                        Drawing                                                Drawn by
                                                   dennishillarchitect                                                                           27 Grant Street,                                         Brown Rooster Pty                                             BAL GENERAL                                            DRH                                                                                                                                         049                    1 : 100
                                           mobile: 0438 20 55 66 | [email protected]                                                 Noosa Heads                                              Ltd                                                           NOTES
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     Do not scale from drawings. Dimensions are to be checked on site prior to commencement of work. Discrepancies to be brought to the attention of the author. Any dimensions not nominated must be referred to the Architect for confirmation. The concepts and information contained in this document are the copyright of Architect. Use or copying of the document in whole or in part without the written permission of the Architect constitutes an infringement of copyright.   11/03/2022 2:58:35 PM