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049_Duplex_27 Grant St Noosa - Construction Issue C · MCU21/0020.01
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SARKING (a) Non-combustible material such as cavity brick, masonry veneer walls with an outer leaf of clay, (a) Doors and door frames shall be protected by bushfire shutters that comply
Sarking, where used for bushfire protection shall be: concrete, calcium silicate or natural stone, precast or in situ walls of concrete or aerated concrete with Note 1; or
or earth walling including mud brick; or (b) Doors and door frames shall be protected externally by screens that comply
a. Non-combustible; or with Note 2; or
b. Breather-type sarking complying with AS/NZS4200.1 and with a flammability index of not more than (b) Timber logs of a species with a density of 680 kg/m3 or greater at a 12 percent moisture content; of (c) Doors and door frames shall comply with the following:
5 and sarked on the outside of the frame; or a minimum nominal overall thickness of 90 mm and a minimum thickness of 70 mm (see Clause
c. An insulation material conforming to the appropriate Australian Standard for that material. 3.11of Standard); and gauge planed; or (i) Doors shall be—
(A) non-combustible; or
SUBFLOOR SUPPORTS (c) Cladding that is fixed externally to a timber-framed or a steel-framed wall and is— (B) a solid timber, laminated timber or reconstituted timber door,
This Standard does not provide construction requirements for subfloor supports where the subfloor space having a minimum thickness of 35 mm for the first 400 mm above
is enclosed with— (i) Non-combustible material; or the threshold; or
(ii) Fibre-cement a minimum of 6 mm in thickness; or (C) a door, including a hollow core door, with a non-combustible
1) a wall that complies with the requirements for an external wall below; or (iii) Bushfire-resisting timber (refer to the table at the end of this document); or kick plate on the outside for the first 400 mm above the
2) a mesh or perforated sheet with a maximum aperture of 2 mm, made of corrosion resistant steel, threshold; or
bronze or aluminium; or (iv) A timber species as specified in Appendix E of the Standard; or (D) a door, including a hollow core door, protected externally by
3) a combination of Items (a) and (b) above. (v) a combination of any of Items (i), (ii), (iii) or (iv) above; or a screen that complies with Clause Note 2 below; or
(d) A combination of any of Items (a), (b) or (c) above. (E) a fully framed glazed door, where the framing is made from
Where the subfloor space is unenclosed, the support posts, columns, stumps, piers and poles shall be— materials specified for bushfire shutters (See Note 2 below), or
2) Joints from a timber species as specified at the end of this document.
(1) of non-combustible material; or All joints in the external surface material of walls shall be covered, sealed, overlapped, backed or butt- (ii) Where doors incorporate glazing, the glazing shall comply with the
(2) of bushfire-resisting timber (refer to the table at the end of this document); or jointed to prevent gaps greater than 3 mm. glazing requirements for windows.
(3) a combination of Items (i) and (ii) above. (iii) Doors shall be tight-fitting to the door frame and to an abutting door,
3) Vents and weepholes if applicable.
NOTE: This requirement applies to the principal building only. See requirements below for verandas, Vents and weepholes in external walls shall be screened with a mesh with a maximum aperture of (iv) Where any part of the door frame is less than 400 mm from the
decks, steps, ramps and landings. 2 mm, made of corrosion-resistant steel, bronze or aluminium, except where the vents and weepholes ground or less than 400 mm above decks, carport roofs, awnings and
have an aperture less than 3 mm. similar elements or fittings having an angle less than 18 degrees to the
FLOORS horizontal and extending more than 110 mm in width from the door, that
1) Elevated floors EXTERNAL WINDOWS and DOORS part of the door frame shall be made from:
BAL construction notes
(A) Bushfire-resisting timber (refer to the table at the end of this
a) Enclosed subfloor space 1) Windows document); or
Window assemblies shall comply with one of the following: (B) A timber species as specified in Appendix E of the Standard; or
The Standard does not provide construction requirements for elevated floors, including (C) Metal; or
bearers, joists and flooring, where the subfloor space is enclosed with— (a) They shall be completely protected by a bushfire shutter that complies with Note 1 below; or (D) Metal-reinforced PVC-U. The reinforcing members shall be made
(b) They shall be completely protected externally by screens that comply with Note 2; or from aluminium, stainless steel, or corrosion-resistant steel and the
i) a wall that complies with the standards for an external wall below; or (c) They shall comply with the following: door assembly shall satisfy the design load, performance and
ii) a mesh or perforated sheet with a maximum aperture of 2 mm, made of corrosion structural strength of the member.
resistant steel, bronze or aluminium; or (i) For window assemblies less than 400 mm from the ground or less than 400 mm above decks,
iii) a combination of Items (a) and (b) above. carport roofs, awnings and similar elements or fittings having an angle less than 18 degrees to the (v) Weather strips, draught excluders or draught seals shall be installed at
horizontal and extending more than 110 mm in width from the window frame, window the base of side-hung external doors.
b) Unenclosed subfloor space frames and window joinery shall be made from:
(d) Sliding doors
Where the subfloor space is unenclosed, the bearers, joists and flooring, less than 400 mm (A) Bushfire-resisting timber (refer to the table at the end of this document); or Sliding doors shall comply with one of the following:
above finished ground level, shall be one of the following: (B) A timber species as specified in Appendix E of the Standard; or
(C) Metal; or (a) They shall be completely protected by a bushfire shutter that complies
i) materials that comply with the following: (D) Metal-reinforced PVC-U. The reinforcing members shall be made from aluminium, stainless steel, or with Note 1; or
corrosion-resistant steel and the frame and sash shall satisfy the design load, performance and (b) They shall be completely protected externally by screens that comply
(a) bearers and joists shall be— structural strength of the member. with Note 2; or
(c) They shall comply with the following:
i) non-combustible; or (ii) Externally fitted hardware that supports the sash in its functions of opening and closing shall be
ii) bushfire-resisting timber (refer to the table at the end of this document); or metal. (i) Any glazing incorporated in sliding doors shall be Grade A safety
iii) a combination of Items (i) and (ii) above. (iii) Where glazing is less than 400 mm from the ground or less than 400mm above decks, carport roofs, glass complying with AS 1288.
awnings and similar elements or fittings having an angle less than 18 degrees to the horizontal and (ii) Both the door frame supporting the sliding door and the framing
(b) Flooring shall be— extending more than 110 mm in width from the window frame, the glazing shall be Grade A safety surrounding any glazing shall be made from:
glass minimum 4 mm thickness, or glass blocks with no restriction on glazing methods.
i) non-combustible; or (iv) Where glazing is other than that specified in Item (iii) above, annealed glass may be used. (A) Bushfire-resisting timber (refer to the table at the end of
ii) bushfire-resisting timber (refer to the table at the end of this document); or (v) The openable portions of windows shall be screened internally or externally with screens that this document); or
iii) timber (other than bushfire-resisting timber), particleboard or plywood flooring comply with Note 2 below. (B) A timber species as specified in Appendix E of the Standard; or
where the underside is lined with sarkingtype material or mineral wool insulation; or (C) Metal; or
2) Screens (D) Metal-reinforced PVC-U. The reinforcing members shall be made
d) a combination of any of Items (i), (ii) or (iii) above; or Screening of the openable portions of all windows is required in all BALs to prevent the entry of embers from aluminium, stainless steel, or corrosion-resistant steel and
to the building when the window is open. Screening of the openable and fixed portions of some the frame and the sash shall satisfy the design load,
ii) a system complying with AS 1530.8.1 windows is required in some BALs to reduce the effects of radiant heat on some types of glass. performance and structural strength of the member.
If the screening is required to reduce the effects of radiant heat on the glass, the screening has to be
This Standard does not provide construction requirements for elements of elevated floors, including external so that the glass in the openable portion of the window will be ‘protected’ when it is shut. (iii) There is no requirement to screen the openable part of the
bearers, joists and flooring, if the underside of the element is 400mm or more above finished ground level. If the screening is required only to prevent the entry of embers, the screening may be fitted externally or sliding door. However, if screened, the screens shall comply with Note 2.
internally.
EXTERNAL WALLS NOTE: The construction of manufactured sliding doors should prevent
3) Doors the entry of embers when the door is closed. There is no requirement
1) Walls Side-hung external doors (including French doors, panel fold and bi-fold doors) to provide screens to the openable part of these doors as it is
The exposed components of an external wall that are less than 400 mm from the ground or less than Side-hung external doors, including French doors, panel fold and bi-fold doors, assumed that a sliding door will be closed if occupants are not
400mm above decks, carport roofs, awnings and similar elements or fittings having an angle less than shall comply with one of the following: present during a bushfire event. Screens of materials other than
18 degrees to the horizontal and extending more than 110 mm in width from the wall shall be: those specified may not resist ember attack.
(iv) Sliding doors shall be tight-fitting in the frames.
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
www.dennishillarchitect.com CON.091
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
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