Construction Requirements BAL-12.5 Building Codes & Rules

- Comply with Bushfire Construction Requirements with Tools™: BAL-12.5 requirements, fire danger insights, & detailed guidance for walls, roof, guttering & more!

-/60/60 FRL

Bushfire Shutter (Optional)

Garage Door

Permanently Closed

Window

Wall

Self-closing

Fire Door

AS 3959:2018, 3.2.3 (a)

> 6m^{AS 3959:2018, 3.2.3 (a)}

AS 3959:2018, 2.1

Fencing^{AS 3959:2018, 2.1}

< 6m from building to be non-combustible

AS 3959:2018, 3.2.1 (a)

-/60/30 FRL^{AS 3959:2018, 3.2.1 (a)}

AS 3959:2018, 3.2.1 (a)

-/60/- FRL^{AS 3959:2018, 3.2.1 (a)}

AS 3959:2018, 3.2.1 (a)

-/60/60 FRL^{AS 3959:2018, 3.2.1 (a)}

AS 3959:2018, 3.2.1

Wall & Openings Fire Separated from Garage^{AS 3959:2018, 3.2.1}

Only if the attached Garage is not constructed to BAL requirements

Sarking

Where required^[1]
≤ 5 flammability index
Walls & roof to be fully-sarked

Sarking RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

AS 3959:2018, 3.10

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{AS 3959:2018, 3.10NCC 2022 Vol 1, G5D1}
Sarking^{NCC 2022 Vol 2, H7D4}
≤ 5 Flammability Index
Non-combustible material
Continuous to the outside to walls & roof

AS 3959:2018, 3.10

Where required^{AS 3959:2018, 3.10}
≤ 5 flammability index
Walls & roof to be fully-sarked

Guttering & Downpipes

Construction^[1]
Turn sarking into gutter
Box gutter non-combustible & fully flashed

Guttering RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.7

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Guttering^{AS 3959:2018, 5.6.7}
Install non-combustible gutter & valley leaf guards
Use non-combustible box gutter & non-combustible flashing at roof junctions

AS 3959:2018, 5.6.7

Construction^{AS 3959:2018, 5.6.7}
Turn sarking into gutter
Box gutter non-combustible & fully flashed

Wall Lining Installation (FRL)

Penetrations

Protection^[1]
Sealed with non-combustible materials
Screen all openings

Screen RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen of corrosion-resistant steel, bronze, or aluminium^{AS 3959:2018, 3.6.1}

Penetration RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Roof Penetration^{AS 3959:2018, 5.6.5}
Sealed with non-combustible material
Openings screened
≥ 4mm toughened Grade A safety glass for overhead glazing
PVC vent pipes allowed
Fit evaporative coolers with non-combustible butterfly closers, or
Non-combustible covers with screens

AS 3959:2018, 5.6.5

Protection^{AS 3959:2018, 5.6.5}
Sealed with non-combustible materials
Screen all openings

Fire Door

Vent & Weepholes

Vents screened^[1]
Non-combustible access door^[2]

Door RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.5.4 (c) (ii)

AS 3959:2018, 5.5.4 (c) (iv)

AS 3959:2018, 5.5.4 (c) (i)

AS 3959:2018, 5.5.4 (c) (v)

AS 3959:2018, 5.5.4 (c) (vii)

AS 3959:2018, 5.5.4 (a)

AS 3959:2018, 5.5.4 (b)

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Door Assembly
Install seals & weather strips^{AS 3959:2018, 5.5.4 (c) (ii)}
Tight-fitting to door frame and abutting door^{AS 3959:2018, 5.5.4 (c) (iv)}
Door Leaf^{AS 3959:2018, 5.5.4 (c) (i)}
≥ 35mm thk reconstituted, laminated, or solid timber for first 400mm above threshold, or
Hollow core, or reconstituted timber, with non-combustible kickplate for first 400mm above threshold
If without kickplate, must be externally protected by screens
Glazed door panels with full framing made of metal, bushfire-resisting timber, uPVC, or allowed timber species
Frames^{AS 3959:2018, 5.5.4 (c) (v)}
Metal, bushfire-resisting timber, allowed timber species, or metal-reinforced uPVC
Metal reinforcement to be of aluminium, stainless steel, or corrosion-resistant steel
Glazing^{AS 3959:2018, 5.5.4 (c) (vii)}
≥ 4mm Grade A safety glass
No requirements on door if
Protected by a bushfire shutter, or^{AS 3959:2018, 5.5.4 (a)}
Protected by screens^{AS 3959:2018, 5.5.4 (b)}

Vent & Weephole RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.4.3

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen^{AS 3959:2018, 5.4.3}
Of aluminium, bronze, or corrosion-resistant steel

AS 3959:2018, 5.4.3

AS 3959:2018, 5.5.4 (c) (i) (A)

Vents screened^{AS 3959:2018, 5.4.3}
Non-combustible access door^{AS 3959:2018, 5.5.4 (c) (i) (A)}

Walls

≤ 400mm above an Ember Holding Surface
Non-combustible material, or^[1]
Bushfire-resistant timber^[2]
Fully-sarked^[3]
Joints sealed or covered^[4]

Jointing RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.4.2

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
External joints are closed off, shielded, layered, reinforced with backing, or edge-joined^{AS 3959:2018, 5.4.2}

Wall Construction RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.4.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
External Wall ≤ 400mm from an Ember Holding Surface^{AS 3959:2018, 5.4.1}
Must be fully sarked
Composed of any of the following
Non-combustible masonry or masonry veneer wall
≥ 90mm thk timber logs with ≥ 680 kg/m³ density at 12% moisture content
Leaf of clay, blockwork, stone, concrete (incl aerated), or earth
≥ 6mm fibre cement
Bushfire resisting timber
Allowed timber species
Steel sheet
An Ember Holding Surface is a reasonably level area where Embers may rest such as^{AS 3959:2018, 5.4.1}
Ground, Decks, Balconies, Stairs
Roofs, Awnings if ≤ 18° Fall
Any other protrusion ≥ 110mm Wide
No requirements for parts of the wall > 400mm above an Ember Holding Surface

Ember Holding Surface

NCC 2022 V2

Tools™ Best Practice

Remember^{Tools™ Best Practice}
Embers can blow & accumulate against a vertical building element causing it to ignite
Any surface including ground, deck, or roof can hold embers if < 18° slope & if > 110mm width

Bushfire-resisting Timber BAL-12.5

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire Resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-12.5 compliance^{AS 3959:2018, 1.5.5}

Vent & Weephole RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.4.3

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen^{AS 3959:2018, 5.4.3}
Of aluminium, bronze, or corrosion-resistant steel

AS 3959:2018, 5.4.1

AS 3959:2018, 5.4.2

AS 3959:2018, 3.10

≤ 400mm above an Ember Holding Surface
Non-combustible material, or^{AS 3959:2018, 5.4.1}
Bushfire-resistant timber^{AS 3959:2018, 5.4.1}
Fully-sarked^{AS 3959:2018, 5.4.2}
Joints sealed or covered^{AS 3959:2018, 3.10}

Detached Structure

> 6m separation, or^[1]
Same fire resisting construction, or^[2]
Main building protected by^[3]
-/60/60 FRL Fire Wall
-/60/30 FRL self-closing fire door
-/60/60 FRL permanently closed window

Detached Structure RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.2.3 (b)

AS 3959:2018, 3.2.3

AS 3959:2018, 3.2.3 (a)

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
The main building can be protected by having the detached structure with equivalent fire-resisting construction as the main building, or^{AS 3959:2018, 3.2.3 (b)}
Separation from Main Building^{AS 3959:2018, 3.2.3}
≥ 6m horizontal distance, or
Fire Wall protecting main building^{AS 3959:2018, 3.2.3 (a)}
-/60/60 Fire Wall
-/60/30 self-closing Fire Door
-/60/- permanently closed window

AS 3959:2018, 3.2.3 (a)

AS 3959:2018, 3.2.3

AS 3959:2018, 3.2.3 (b)

> 6m separation, or^{AS 3959:2018, 3.2.3 (a)}
Same fire resisting construction, or^{AS 3959:2018, 3.2.3}
Main building protected by^{AS 3959:2018, 3.2.3 (b)}
-/60/60 FRL Fire Wall
-/60/30 FRL self-closing fire door
-/60/60 FRL permanently closed window

Garage & Carport Under

All elements to BAL-12.5 Rules^[1], or
Fire separated

Carport or Garage Under or Partially Under a Building

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.2.2

AS 3959:2018, 3.2.2 (b)

AS 3959:2018, 3.2.2

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC Specification 1, NCC Part G5, & AS 3959^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Walls, Ceilings, Floors, Structure & Openings to BAL-12.5 rules^{AS 3959:2018, 3.2.2}, or
Separated from the main building with^{AS 3959:2018, 3.2.2 (b)}
60/60/60 Structure tested from Outside
-/60/60 Walls & ceiling / floor above, or
≥ 90mm thk Masonry or Earth Wall^{AS 3959:2018, 3.2.2}
-/60/30 Self-closing fire door
-/60/- Permanently closed fire window

AS 3959:2018, 3.2.2

All elements to BAL-12.5 Rules^{AS 3959:2018, 3.2.2}, or
Fire separated

Roofing

Assembly^[1]
Non-combustible materials
Fully sarked, junctions sealed
Vents fitted with ember guards

Guttering RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.7

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Guttering^{AS 3959:2018, 5.6.7}
Install non-combustible gutter & valley leaf guards
Use non-combustible box gutter & non-combustible flashing at roof junctions

Skylight RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Skylight^{AS 3959:2018, 5.6.5}
Sealed / fully flashed with non-combustible material
Grade A safety glass to AS 1288
Polymer skylight allowed with Grade A safety glass diffuser below glazing
Insulated glazing unit requires ≥ 4mm thick Grade A toughened safety glass to outer panel

Eaves & Fascia RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

AS 3959:2018, 5.6.6

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{AS 3959:2018, 5.6.6NCC 2022 Vol 1, G5D1}
Roof Components^{NCC 2022 Vol 2, H7D4}
Gables constructed as per wall requirements
Fit openings for ventilation of eaves, with ember guards & protect with screens
Seals to be of corrosion-resistant aluminium, bronze, or steel
Seal joints with timber storm moulds or plastic joining strips

Roofing RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Roofing^{AS 3959:2018, 5.6.1}
Non-combustible cover
Seal Roof/Roof & Roof/Wall junctions, or
Backed with a breathable sarking or mesh
Fit roof ventilation openings with non-combustible ember guards, or screens
Evaporative coolers AS/NZS 60335.2.98 compliant
If with an internal damper preventing ember entry, does not require external screening

Screen RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen of corrosion-resistant steel, bronze, or aluminium^{AS 3959:2018, 3.6.1}

Penetration RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Roof Penetration^{AS 3959:2018, 5.6.5}
Sealed with non-combustible material
Openings screened
≥ 4mm toughened Grade A safety glass for overhead glazing
PVC vent pipes allowed
Fit evaporative coolers with non-combustible butterfly closers, or
Non-combustible covers with screens

Metal Sheet Roof RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.3

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Sheet Roofs^{AS 3959:2018, 5.6.3}
Fully sarked over battens
Seal gaps along fascia, ridges, hips, & wall lines by any of the following
Mesh or perforated screen
Mineral wool
Non-combustible material

Tiled Roof RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.2

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Tiled Roofs^{AS 3959:2018, 5.6.2}
Cover roof framing is completely with sarking, battens may be installed on top of it
Apply sarking over the hips and ridges, ensuring it continues into the gutters and valleys

AS 3959:2018, 5.6.1

Assembly^{AS 3959:2018, 5.6.1}
Non-combustible materials
Fully sarked, junctions sealed
Vents fitted with ember guards

Skylights

Sealed & of Grade A safety glass^[1]

Skylight RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Skylight^{AS 3959:2018, 5.6.5}
Sealed / fully flashed with non-combustible material
Grade A safety glass to AS 1288
Polymer skylight allowed with Grade A safety glass diffuser below glazing
Insulated glazing unit requires ≥ 4mm thick Grade A toughened safety glass to outer panel

AS 3959:2018, 5.6.5

Sealed & of Grade A safety glass^{AS 3959:2018, 5.6.5}

Garage Doors

Non-combustible materials^[1]
Seals all round^[2]
Ventilation slots if any, screened^[3]

Garage Doors RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.5.6

AS 3959:2018, 5.5.6 (b)

AS 3959:2018, 5.5.6 (c)

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Materials for first 400mm above ground may be any of the following^{AS 3959:2018, 5.5.6}
Non-combustible
Bushfire-resting timber
≥ 6mm fibre-cement sheet
Allowed timber species
Protection^{AS 3959:2018, 5.5.6 (b)}
Fitted with guide tracks, weather strips, seals & brushes
Ventilation^{AS 3959:2018, 5.5.6 (c)}
Protected by screens

Bushfire-resisting Timber BAL-12.5

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire Resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-12.5 compliance^{AS 3959:2018, 1.5.5}

Screen RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen of corrosion-resistant steel, bronze, or aluminium^{AS 3959:2018, 3.6.1}

AS 3959:2018, 5.5.6

AS 3959:2018, 5.5.6 (b)

AS 3959:2018, 5.5.6 (c)

Non-combustible materials^{AS 3959:2018, 5.5.6}
Seals all round^{AS 3959:2018, 5.5.6 (b)}
Ventilation slots if any, screened^{AS 3959:2018, 5.5.6 (c)}

Doors, Frames, Sidelights

Doors with seals all round^[1]
Leaf non-combustible or ≥ 35mm solid core^[2]
Frames to be, metal, bushfire resisting timber, allowed timber species, or metal reinforced uPVC^[3]
≥ 4mm Grade A safety glass^[4]

Door RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.5.4 (c) (ii)

AS 3959:2018, 5.5.4 (c) (iv)

AS 3959:2018, 5.5.4 (c) (i)

AS 3959:2018, 5.5.4 (c) (v)

AS 3959:2018, 5.5.4 (c) (vii)

AS 3959:2018, 5.5.4 (a)

AS 3959:2018, 5.5.4 (b)

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Door Assembly
Install seals & weather strips^{AS 3959:2018, 5.5.4 (c) (ii)}
Tight-fitting to door frame and abutting door^{AS 3959:2018, 5.5.4 (c) (iv)}
Door Leaf^{AS 3959:2018, 5.5.4 (c) (i)}
≥ 35mm thk reconstituted, laminated, or solid timber for first 400mm above threshold, or
Hollow core, or reconstituted timber, with non-combustible kickplate for first 400mm above threshold
If without kickplate, must be externally protected by screens
Glazed door panels with full framing made of metal, bushfire-resisting timber, uPVC, or allowed timber species
Frames^{AS 3959:2018, 5.5.4 (c) (v)}
Metal, bushfire-resisting timber, allowed timber species, or metal-reinforced uPVC
Metal reinforcement to be of aluminium, stainless steel, or corrosion-resistant steel
Glazing^{AS 3959:2018, 5.5.4 (c) (vii)}
≥ 4mm Grade A safety glass
No requirements on door if
Protected by a bushfire shutter, or^{AS 3959:2018, 5.5.4 (a)}
Protected by screens^{AS 3959:2018, 5.5.4 (b)}

Bushfire-resisting Timber BAL-12.5

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire Resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-12.5 compliance^{AS 3959:2018, 1.5.5}

AS 3959:2018, 5.5.4 (c) (i)

AS 3959:2018, 5.5.4 (c) (ii)

AS 3959:2018, 5.5.4 (c) (iv)

AS 3959:2018, 5.5.4 (c) (v)

Doors with seals all round^{AS 3959:2018, 5.5.4 (c) (i)}
Leaf non-combustible or ≥ 35mm solid core^{AS 3959:2018, 5.5.4 (c) (ii)}
Frames to be, metal, bushfire resisting timber, allowed timber species, or metal reinforced uPVC^{AS 3959:2018, 5.5.4 (c) (iv)}
≥ 4mm Grade A safety glass^{AS 3959:2018, 5.5.4 (c) (v)}

Decks & Landing

Fully enclosing a sub-floor will provide protection^[1]
Non-combustible material^[2]

Bushfire-resisting Timber BAL-12.5

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire Resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-12.5 compliance^{AS 3959:2018, 1.5.5}

Deck and Landing RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.7.2.1

AS 3959:2018, 5.7.2.4

AS 3959:2018, 5.7.1

NSW RFS 2019 PBP, 7.5.2

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Decking may be spaced^{AS 3959:2018, 5.7.2.1} & has no requirements unless < 300mm horizontally & < 400mm vertically from a glazed Window or Door^{AS 3959:2018, 5.7.2.4}, then must be
Non-combustible material
Bushfire-resisting Timber
Allowed Timber Species
uPVC
If Enclosing Walls are constructed & ≤ 400mm from ground^{AS 3959:2018, 5.7.1} they must be constructed as per BAL-12.5 Wall Rules

NSW Enhanced RULES^{NSW RFS 2019 PBP, 7.5.2}

Decks, Landings & Stairs must be constructed to BAL-29 requirements
All elements must be
Non-combustible material, or
Bushfire-resisting Timber

AS 3959:2018, 5.7.2

AS 3959:2018, 5.7.2.4

Fully enclosing a sub-floor will provide protection^{AS 3959:2018, 5.7.2}
Non-combustible material^{AS 3959:2018, 5.7.2.4}

Windows & Glazed Doors

Frame to be of bushfire-resistant timber, allowed timber species, metal, or metal-reinforced uPVC^[1]
≥ 4mm Grade A safety glass^[2]
Openable screens^[3]

Window RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.5.3 (a)

AS 3959:2018, 5.5.3 (b)

AS 3959:2018, 5.5.3 (c) (i)

AS 3959:2018, 5.5.3 (c) (v)

AS 3959:2018, 5.5.3 (c) (iii)

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Windows^{AS 3959:2018, 5.5.3 (a)}
≥ 4mm Grade A safety glass for glazing < 400mm above a deck, ground, or other ember-holding surfaces
Frames^{AS 3959:2018, 5.5.3 (b)}
Frames to be metal, bushfire-resisting timber, allowed timber species, or metal-reinforced uPVC
Metal reinforcement to be of aluminium, stainless steel, or corrosion-resistant steel
Screens^{AS 3959:2018, 5.5.3 (c) (i)}
Screen to openable panels
Metal, bushfire-resisting timber, or allowed timber species
No requirements on window if
Protected by a bushfire shutter, or^{AS 3959:2018, 5.5.3 (c) (v)}
Protected by screens^{AS 3959:2018, 5.5.3 (c) (iii)}

Ember Holding Surface

NCC 2022 V2

Tools™ Best Practice

Remember^{Tools™ Best Practice}
Embers can blow & accumulate against a vertical building element causing it to ignite
Any surface including ground, deck, or roof can hold embers if < 18° slope & if > 110mm width

Bushfire-resisting Timber BAL-12.5

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire Resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-12.5 compliance^{AS 3959:2018, 1.5.5}

Screen RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen of corrosion-resistant steel, bronze, or aluminium^{AS 3959:2018, 3.6.1}

AS 3959:2018, 5.5.3 (c) (i)

AS 3959:2018, 5.5.3 (c) (iii)

AS 3959:2018, 5.5.3 (c) (v)

Frame to be of bushfire-resistant timber, allowed timber species, metal, or metal-reinforced uPVC^{AS 3959:2018, 5.5.3 (c) (i)}
≥ 4mm Grade A safety glass^{AS 3959:2018, 5.5.3 (c) (iii)}
Openable screens^{AS 3959:2018, 5.5.3 (c) (v)}

Bushfire Shutter

Non-combustible materials^[1]
Optional & removes window & door requirements^[2]
≤ 2mm aperture gaps, slots, or screen^[3]

Bushfire Shutter MATERIALS

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.5.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Permitted BAL-12.5 Bushfire Shutter Materials^{AS 3959:2018, 5.5.1}
Non-combustible material
Allowed timber species
Bushfire-resisting timber

Bushfire Shutter RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.7

AS 3959:2018, 5.5.3

AS 3959:2018, 6.5.3

AS 3959:2018, 7.5.3

AS 3959:2018, 8.5.3

AS 3959:2018, 9.5.3

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Optional^{AS 3959:2018, 3.7AS 3959:2018, 5.5.3AS 3959:2018, 6.5.3AS 3959:2018, 7.5.3AS 3959:2018, 8.5.3}
If not installed, window & door assemblies shall comply with corresponding BAL requirements
Bushfire Shutter^{AS 3959:2018, 9.5.3}
≥ 1 to be openable from inside to allow escape
Must cover the entire window or door assembly
Able to be closed manually in case of power failure
≤ 2mm gap to wall, frame, & sill
≤ 20% perforated area, uniformly distributed, with ≤ 2mm apertures

Bushfire-resisting Timber BAL-12.5

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire Resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-12.5 compliance^{AS 3959:2018, 1.5.5}

AS 3959:2018, 3.7

AS 3959:2018, 5.5.3

AS 3959:2018, 5.5.1

Non-combustible materials^{AS 3959:2018, 3.7}
Optional & removes window & door requirements^{AS 3959:2018, 5.5.3}
≤ 2mm aperture gaps, slots, or screen^{AS 3959:2018, 5.5.1}

Floor & Balcony

Fully enclosing the sub-floor will provide protection^[1]
Non-combustible materials when unenclosed^[2]

Fully-enclosed Sub-floor RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.3.2.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Fully enclosing a sub-floor will provide protection
No requirements, if enclosed with^{AS 3959:2018, 5.3.2.1}
BAL-12.5 compliant wall, or
Protected by screens

Unenclosed Sub-floor RULES

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.3.2.2

AS 3959:2018, 5.2

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bearers, Joists, & Flooring < 400mm from ground to be of^{AS 3959:2018, 5.3.2.2}
Non-combustible material, or
Bushfire-resisting timber
Flooring^{AS 3959:2018, 5.3.2.2}
Non-combustible, or
Bushfire-resisting timber, or
Timber, particleboard, or plywood, with underside covered by sarking or mineral wool, or
AS 1530.8.1 compliant system
Sub-floor space^{AS 3959:2018, 5.2}
Do not store any combustible material under a building
Keep free of leaf litter

Wall Construction RULES

NCC 2022 V1

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.4.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
External Wall^{AS 3959:2018, 5.4.1}
Wall must be fully sarked
Composed of any of the following
Non-combustible masonry or masonry veneer wall
≥ 90mm thk timber logs with ≥ 680 kg/m³ density at 12% moisture content
Leaf of clay, blockwork, stone, concrete (incl aerated), or earth
≥ 6mm fibre cement
Bushfire resisting timber
Allowed timber species
Steel sheet

Bushfire-resisting Timber BAL-12.5

NCC 2022 V3

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, F4

AS 3959:2018, E1

AS 3959:2018, 1.5.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Bushfire Resisting Timber to AS 3959^{AS 3959:2018, F4}
Timber species as per AS 3959^{AS 3959:2018, E1}
Any solid, laminated, treated, or reconstituted timber meeting BAL-12.5 compliance^{AS 3959:2018, 1.5.5}

Sub-floor Support RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.2

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Exposed Sub-floor Supports^{AS 3959:2018, 5.2}
Non-combustible material, or
Bushfire-resisting timber, or
Allowed timber species
No requirements when Subfloor Space is enclosed with^{AS 3959:2018, 5.2}
BAL-12.5 compliant wall, or
Protected by screens

Screen RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen of corrosion-resistant steel, bronze, or aluminium^{AS 3959:2018, 3.6.1}

AS 3959:2018, 5.2

AS 3959:2018, 5.3.2.2

Fully enclosing the sub-floor will provide protection^{AS 3959:2018, 5.2}
Non-combustible materials when unenclosed^{AS 3959:2018, 5.3.2.2}

Eaves & Fascia

Roof Components^[1]
Gables shall follow same rules as per Fire Wall
Eaves penetrations screened
Joints sealed

Eaves & Fascia RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

AS 3959:2018, 5.6.6

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{AS 3959:2018, 5.6.6NCC 2022 Vol 1, G5D1}
Roof Components^{NCC 2022 Vol 2, H7D4}
Gables constructed as per wall requirements
Fit openings for ventilation of eaves, with ember guards & protect with screens
Seals to be of corrosion-resistant aluminium, bronze, or steel
Seal joints with timber storm moulds or plastic joining strips

Screen RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen of corrosion-resistant steel, bronze, or aluminium^{AS 3959:2018, 3.6.1}

AS 3959:2018, 5.6.6

Roof Components^{AS 3959:2018, 5.6.6}
Gables shall follow same rules as per Fire Wall
Eaves penetrations screened
Joints sealed

Verandah or Awning Roof

Relation to main roof^[1]
If part of main roof space, requirements as per main roof
If separated, non-combustible cover

Ancillary Roofing RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

AS 3959:2018, 5.6.4

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{AS 3959:2018, 5.6.4NCC 2022 Vol 1, G5D1}
Carport, Overhead Awning, & Verandah Roofs^{NCC 2022 Vol 2, H7D4}
If part of main roof, shall follow main roof requirements
If separated from main roof, a non-combustible cover shall be used & shall follow wall requirements

Post RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.7.5

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Verandah Posts may be of^{AS 3959:2018, 5.7.5}
Timber installed on galvanised mounting shoes or stirrups
With a clearance ≥ 75mm above the surrounding ground level, or
If < 400mm above deck or ground level, must be of either
Non-combustible material, or
Bushfire-resisting timber, or
Allowed timber species

Screen RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.6.1

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
≤ 2mm aperture screen of corrosion-resistant steel, bronze, or aluminium^{AS 3959:2018, 3.6.1}

Metal Sheet Roof RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.3

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Sheet Roofs^{AS 3959:2018, 5.6.3}
Fully sarked over battens
Seal gaps along fascia, ridges, hips, & wall lines by any of the following
Mesh or perforated screen
Mineral wool
Non-combustible material

Tiled Roof RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.6.2

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Tiled Roofs^{AS 3959:2018, 5.6.2}
Cover roof framing is completely with sarking, battens may be installed on top of it
Apply sarking over the hips and ridges, ensuring it continues into the gutters and valleys

AS 3959:2018, 5.6.4

Relation to main roof^{AS 3959:2018, 5.6.4}
If part of main roof space, requirements as per main roof
If separated, non-combustible cover

Services

Metal plumbing externally^[1]
Electrical underground^[2]

Utility Service RULES

NCC 2022 V2

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 5.8

AS/NZS 3000:2018, 3.11

AS/NZS 1596:2014, 4.4.12

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
Gas & Water Supply Lines^{AS 3959:2018, 5.8}
Pipes, & fittings to be metal
≥ 400mm metal extension into the building
≥ 100mm metal extension below ground
Gas ≥ 0.9mm wall thickness of steel or copper (gas regulations may require thicker)
Bottled Gas Tanks^{AS 3959:2018, 5.8AS/NZS 3000:2018, 3.11}
Securely fastened & on concrete pad
Shield & / or locate away from building
Electrical wiring to be underground^{AS/NZS 1596:2014, 4.4.12}

AS/NZS 3000:2018, 3.11

AS 3959:2018, 5.8

Metal plumbing externally^{AS/NZS 3000:2018, 3.11}
Electrical underground^{AS 3959:2018, 5.8}

Fire-stopping Penetrations

Attached Structure

Same fire resisting construction, or^[1]
Main building protected by^[2]
-/60/60 FRL wall
-/60/30 FRL self-closing fire door
-/60/- FRL permanently closed window

Attached Structure RULES

NCC 2022 V1

All Building Classes

NCC 2022 G5D1 & H7D4 [2019 G5.0, 3.10.5]

May 2023

NCC 2022 Vol 1, G5D1

NCC 2022 Vol 2, H7D4

AS 3959:2018, 3.2.1 (a)

AS 3959:2018, 3.2.1

AS 3959:2018, 3.2.2

Building elements within Bushfire-Prone Areas to be Bushfire Attack Resistant to the NCC^{NCC 2022 Vol 1, G5D1NCC 2022 Vol 2, H7D4}
The main building can be protected by having the attached structure with equivalent fire resisting construction as the main building, or^{AS 3959:2018, 3.2.1 (a)}
Fire Wall required if structure is a garage^{AS 3959:2018, 3.2.1}
Fire Wall protecting main building^{AS 3959:2018, 3.2.2}
-/60/60 Fire Wall
-/60/30 self-closing Fire Door
-/60/- permanently closed window

AS 3959:2018, 3.2.1

AS 3959:2018, 3.2.1 (a)

Same fire resisting construction, or^{AS 3959:2018, 3.2.1}
Main building protected by^{AS 3959:2018, 3.2.1 (a)}
-/60/60 FRL wall
-/60/30 FRL self-closing fire door
-/60/- FRL permanently closed window