NCC 2022 Volume One - Building Code of Australia Class 2 to 9 buildings
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G5

Part G5 Construction in bushfire prone areas

Part G5 Construction in bushfire prone areas

Introduction to this Part

This Part contains additional requirements for the construction of buildings located in designated bushfire prone areas, to address the additional risks posed by bushfire attack.

Objectives

NCC Blurbs

The Objective of this Part is to—

  1. safeguard occupants from injury from the effects of a bushfire; and
  2. protect buildings from the effects of a bushfire; and
  3. facilitate temporary shelter for building occupants who may be unable to readily evacuate the building prior to a bushfire.

Applications

  1. VIC G5O1(a) and (b) apply in a designated bushfire prone area to—
    1. a Class 2 or 3 building; or
    2. a Class 10a building or deck associated with a Class 2 or 3 building.
  2. VIC G5O1(a), (b) and (c) apply in a designated bushfire prone area to—
    1. a Class 9a health-care building; and
    2. a Class 9b—
      1. early childhood centre; and
      2. primary or secondary school; and
    3. a Class 9c residential care building; and
    4. a Class 10a building or deck immediately adjacent or connected to a building of a type listed in (2)(a) to (c); and
    5. a Class 4 part of a building associated with a building of a type listed in (2)(a) to (c).
NCC Title
Objective
NCC State
VIC
NCC Variation Type
Replacement
NCC SPTC Current
Objective

The Objective of this Part is to—

  1. safeguard occupants from injury from the effects of a bushfire; and
  2. protect buildings from the effects of a bushfire; and
  3. facilitate temporary shelter for building occupants who may be unable to readily evacuate the building prior to a bushfire.

Applications

  1. G5O1(a) and (b) apply in a designated bushfire prone area to—
    1. a Class 2 or 3 building; or
    2. a Class 10a building or deck associated with a Class 2 or 3 building.
  2. G5O1(a), (b) and (c) apply in a designated bushfire prone area to—
    1. a Class 9a health-care building; and
    2. a Class 9b—
      1. early childhood centre; and
      2. primary or secondary school; and
    3. a Class 9c residential care building; and
    4. a Class 10a building or deck immediately adjacent or connected to a building of a type listed in (a) to (c).

 

Australia contains some of the most dangerous bushfire areas in the world and concern over loss of life and property led to the development of Part G5.

The Objective of this Part is to serve three core purposes: (a) to safeguard occupants from injuries resulting from bushfire effects; (b) to protect the building structure itself from potential damage due to bushfire; and (c) to ensure temporary shelter for occupants who may not be able to evacuate the building promptly in the event of a bushfire.

The provisions of Part G5 only apply to certain buildings in areas that have been designated as ‘bushfire prone areas’. Also, objectives differ for various buildings. See applications section of G5O1 for specific detail.

Functional Statements

NCC Blurbs

A building constructed in a designated bushfire prone area—

  1. is to provide a resistance to bushfires in order to reduce the danger to life and minimise the risk of the loss of the building; and
  2. if occupied by people who may be unable to readily evacuate the building prior to a bushfire, is to be constructed so as to provide its occupants shelter from the direct and indirect actions of a bushfire.

Applications

  1. VIC G5F1(a) apply in a designated bushfire prone area to—
    1. a Class 2 or 3 building; or
    2. a Class 10a building or deck associated with a Class 2 or 3 building; or
    3. a Class 10a building or deck immediately adjacent or connected to a building of a type listed in (2)(a), (b) or (c).
  2. VIC G5F1(a) and (b) apply in a designated bushfire prone area to—
    1. a Class 9a health-care building; and
    2. a Class 9b—
      1. early childhood centre; and
      2. primary or secondary school; and
    3. a Class 9c residential care building; and
    4. a Class 4 part of a building associated with a building of a type listed in (a) to (c).
NCC Title
Construction in bushfire prone areas
NCC State
VIC
NCC Variation Type
Replacement
NCC SPTC Current
Construction in bushfire prone areas

A building constructed in a designated bushfire prone area—

  1. is to provide a resistance to bushfires in order to reduce the danger to life and minimise the risk of the loss of the building; and
  2. if occupied by people who may be unable to readily evacuate the building prior to a bushfire, is to be constructed so as to provide its occupants shelter from the direct and indirect actions of a bushfire.

Applications

  1. G5F1(a) applies in a designated bushfire prone area to—
    1. a Class 2 or 3 building; or
    2. a Class 10a building or deck associated with a Class 2 or 3 building; or
    3. a Class 10a building or deck immediately adjacent or connected to a building of a type listed in (2)(a), (b) or (c)
  2. G5F1(a) and (b) apply in a designated bushfire prone area to—
    1. a Class 9a health-care building; and
    2. a Class 9b—
      1. early childhood centre; and
      2. primary or secondary school; and
    3. a Class 9c residential care building.

 

A building constructed in a designated bushfire prone area is to provide a resistance to bushfire in order to reduce the danger to life and minimise the risk of loss of the building. Further, if occupied by people who may be unable to readily evacuate, the building is to be constructed to provide shelter from the direct and indirect actions of a bushfire.

See applications section of G5F1 for specific detail.

Performance Requirements

NCC Blurbs

A building that is constructed in a designated bushfire prone area must be designed and constructed to—

  1. reduce the risk of ignition from a design bushfire with an annual exceedance probability not more than 1:100 years, or 1:200 years for a Class 9 building; and
  2. take account of the assessed duration and intensity of the fire actions of the design bushfire; and
  3. be designed to prevent internal ignition of the building and its contents; and
  4. maintain the structural integrity of the building for the duration of the design bushfire.

Applications

VIC G5P1 applies in a designated bushfire prone area to—

  1. a Class 2 or 3 building; and
  2. a Class 9a health-care building; and
  3. a Class 9b—
    1. early childhood centre; and
    2. primary or secondary school; and
  4. a Class 9c residential care building; and
  5. a Class 10a building or deck immediately adjacent or connected to a building of a type listed in (a) to (d); and
  6. a Class 4 part of a building associated with a building of a type listed in (b) to (d).
NCC Title
Bushfire resistance
NCC State
VIC
NCC Variation Type
Replacement
NCC SPTC Current
Bushfire resistance
NCC Blurbs

A building that is constructed in a designated bushfire prone area must be designed and constructed to—

  1. reduce the risk of ignition from a design bushfire with an annual exceedance probability not more than 1:100 years, or 1:200 years for a Class 9 building; and
  2. take account of the assessed duration and intensity of the fire actions of the design bushfire; and
  3. be designed to prevent internal ignition of the building and its contents; and
  4. maintain the structural integrity of the building for the duration of the design bushfire.

Applications

G5P1 applies in a designated bushfire prone area to—

  1. a Class 2 or 3 building; and
  2. a Class 9a health-care building; and
  3. a Class 9b—
    1. early childhood centre; and
    2. primary or secondary school; and
  4. a Class 9c residential care building; and
  5. a Class 10a building or deck immediately adjacent or connected to a building of a type listed in (a) to (d).

Notes

For additional requirements relating to bushfire prone areas, refer to the Director’s Determinations on Bushfire Hazard Areas – current versions available at www.cbos.tas.gov.au

NCC Title
Bushfire resistance
NCC State
TAS
NCC Variation Type
Replacement
NCC SPTC Current
Bushfire resistance
NCC Blurbs

A building that is constructed in a designated bushfire prone area must be designed and constructed to—

  1. reduce the risk of ignition from a design bushfire with an annual exceedance probability not more than 1:100 years, or 1:200 years for a Class 9 building; and
  2. take account of the assessed duration and intensity of the fire actions of the design bushfire; and
  3. prevent internal ignition of the building and its contents; and
  4. maintain the structural integrity of the building for the duration of the design bushfire.

Applications

NSW G5P1 only applies in a designated bushfire prone area to—

  1. a Class 2 or 3 building; or
  2. a Class 4 part of a building; or
  3. a Class 9 building that is a special fire protection purpose; or
  4. a Class 10a building or deck immediately adjacent or connected to a building or part of a type listed in (a), (b) or (c).
NCC Title
Bushfire resistance
NCC State
NSW
NCC Variation Type
Replacement
NCC SPTC Current
Bushfire resistance
NCC Blurbs

A building that is constructed in a designated bushfire prone area must be designed and constructed to—

  1. reduce the risk of ignition from a design bushfire with an annual exceedance probability not more than 1:100 years, or 1:200 years for a Class 9 building; and
  2. take account of the assessed duration and intensity of the fire actions of the design bushfire; and
  3. be designed to prevent internal ignition of the building and its contents; and
  4. maintain the structural integrity of the building for the duration of the design bushfire.

Applications

G5P1 applies in a designated bushfire prone area to—

  1. a Class 2 or 3 building; and
  2. a Class 9a health-care building; and
  3. a Class 9b—
    1. early childhood centre; and
    2. primary or secondary school; and
  4. a Class 9c residential care building; and
  5. a Class 10a building or deck immediately adjacent or connected to a building of a type listed in (a) to (d)

but does not apply when the classified vegetation is Group F rainforest (excluding wet sclerophyll forest types), mangrove communities and grasslands under 300 mm high.

NCC Title
Bushfire resistance
NCC State
QLD
NCC Variation Type
Replacement
NCC SPTC Current
Bushfire resistance

A building that is constructed in a designated bushfire prone area must be designed and constructed to—

  1. reduce the risk of ignition from a design bushfire with an annual exceedance probability not more than 1:100 years, or 1:200 years for a Class 9 building; and
  2. take account of the assessed duration and intensity of the fire actions of the design bushfire; and
  3. be designed to prevent internal ignition of the building and its contents; and
  4. maintain the structural integrity of the building for the duration of the design bushfire.

Applications

G5P1 applies in a designated bushfire prone area to—

  1. a Class 2 or 3 building; and
  2. a Class 9a health-care building; and
  3. a Class 9b—
    1. early childhood centre; and
    2. primary or secondary school; and
  4. a Class 9c residential care building; and
  5. a Class 10a building or deck immediately adjacent or connected to a building of a type listed in (a) to (d).

 

G5P1 applies only to a Class 2 buildings, Class 3 buildings, certain Class 9 buildings and a Class 10a building or deck associated with same, in a designated bushfire prone area.

The basis of G5P1 is that:

  • bushfires provide a major risk of ignition to a building that may be caused by burning embers, radiant heat and flame; and
  • the design and construction measures required to deal with this risk is associated with the mechanism of attack and its intensity.
NCC Blurbs

A building that is constructed in a designated bushfire prone area and occupied by people who may be unable to readily evacuate the building prior to a bushfire must, to the degree necessary—

  1. reduce the risk of an untenable indoor environment for occupants during a bushfire event, appropriate to the—
    1. location of the building relative to fire hazards, including—
      1. classified vegetation; and
      2. adjacent buildings, structures and movable objects; and
      3. carparking areas and allotment boundaries; and
      4. other combustible materials; and
    2. number of occupants to be accommodated within the building; and
    3. intensity of bushfire attack on the building; and
    4. duration of occupancy; and
    5. intensity of potential consequential fires; and
    6. occupant tenability within the building before, during and after the bushfire event; and
    7. combined effects of structural, fire exposure and other effects to which the building may reasonably be subjected; and
    8. provision of fire fighting equipment and water supply to facilitate protection of the building; and
  2. be provided with vehicular access to the site to enable firefighting and emergency personnel to defend or evacuate the building; and
  3. have access to a sufficient supply of water for firefighting purposes on the site; and
  4. provide safe access within the site to the building (including carparking areas), as well as safe egress after the bushfire event.

Applications

VIC G5P2 applies to the following buildings located in a designated bushfire prone area—

  1. a Class 9a health-care building; and
  2. a Class 9b—
    1. early childhood centre; and
    2. primary or secondary school; and
  3. a Class 9c residential care building; and
  4. a Class 4 part of a building associated with a building of a type listed in (a) to (c).

Notes

VIC G5P2 does not guarantee the safety of building occupants or the maintenance of tenable conditions within a building during a bushfire event.

NCC Title
Additional bushfire requirements for certain Class 9 buildings
NCC State
VIC
NCC Variation Type
Replacement
NCC SPTC Current
Additional bushfire requirements for certain Class 9 buildings
NCC Blurbs

A building that is constructed in a designated bushfire prone area and occupied by people who may be unable to readily evacuate the building prior to a bushfire must, to the degree necessary—

  1. reduce the risk of an untenable indoor environment for occupants during a bushfire event, appropriate to the—
    1. location of the building relative to fire hazards, including—
      1. classified vegetation; and
      2. adjacent buildings, structures and movable objects; and
      3. carparking areas and allotment boundaries; and
      4. other combustible materials; and
    2. number of occupants to be accommodated within the building; and
    3. intensity of bushfire attack on the building; and
    4. duration of occupancy; and
    5. intensity of potential consequential fires; and
    6. occupant tenability within the building before, during and after the bushfire event; and
    7. combined effects of structural, fire exposure and other effects to which the building may reasonably be subjected; and
    8. provision of fire fighting equipment and water supply to facilitate protection of the building; and
  2. be provided with vehicular access to the site to enable firefighting and emergency personnel to defend or evacuate the building; and
  3. have access to a sufficient supply of water for firefighting purposes on the site; and
  4. provide safe access within the site to the building (including carparking areas), as well as safe egress after the bushfire event.

Applications

TAS G5P2 applies to the following buildings located in a designated bushfire prone area—

  1. a Class 9a health-care building; and
  2. a Class 9b—
    1. early childhood centre; and
    2. primary or secondary school; and
  3. a Class 9c residential care building.

Notes

  1. TAS G5P2 does not guarantee the safety of building occupants or the maintenance of tenable conditions within a building during a bushfire event.
  2. For additional requirements relating to bushfire prone areas, refer to the Director’s Determinations on Bushfire Hazard Areas – current versions available at www.cbos.tas.gov.au
NCC Title
Additional bushfire requirements for certain Class 9 buildings
NCC State
TAS
NCC Variation Type
Replacement
NCC SPTC Current
Additional bushfire requirements for certain Class 9 buildings
NCC Blurbs

A building that is constructed in a designated bushfire prone area and occupied by people who may be unable to readily evacuate the building prior to a bushfire must, to the degree necessary—

  1. reduce the risk of an untenable indoor environment for occupants during a bushfire event, appropriate to the—
    1. location of the building relative to fire hazards, including—
      1. classified vegetation; and
      2. adjacent buildings, structures and movable objects; and
      3. carparking areas and allotment boundaries; and
      4. other combustible materials; and
    2. number of occupants to be accommodated within the building; and
    3. intensity of bushfire attack on the building; and
    4. duration of occupancy; and
    5. intensity of potential consequential fires; and
    6. occupant tenability within the building before, during and after the bushfire event; and
    7. combined effects of structural, fire exposure and other effects to which the building may reasonably be subjected; and
    8. provision of fire fighting equipment and water supply to facilitate protection of the building; and
  2. be provided with vehicular access to the site to enable firefighting and emergency personnel to defend or evacuate the building; and
  3. have access to a sufficient supply of water for firefighting purposes on the site; and
  4. provide safe access within the site to the building (including carparking areas), as well as safe egress after the bushfire event.

Applications

NSW G5P2 applies to a Class 9 building that is a special fire protection purpose located in a designated bushfire prone area.

Notes

NSW G5P2 does not guarantee the safety of building occupants or the maintenance of tenable conditions within a building during a bushfire event.

NCC Title
Additional bushfire requirements for Class 9 buildings that are a special fire protection purpose
NCC State
NSW
NCC Variation Type
Replacement
NCC SPTC Current
Additional bushfire requirements for Class 9 buildings that are a special fire protection purpose

A building that is constructed in a designated bushfire prone area and occupied by people who may be unable to readily evacuate the building prior to a bushfire must, to the degree necessary—

  1. reduce the risk of an untenable indoor environment for occupants during a bushfire event, appropriate to the—
    1. location of the building relative to fire hazards, including—
      1. classified vegetation; and
      2. adjacent buildings, structures and movable objects; and
      3. carparking areas and allotment boundaries; and
      4. other combustible materials; and
    2. number of occupants to be accommodated within the building; and
    3. intensity of bushfire attack on the building; and
    4. duration of occupancy; and
    5. intensity of potential consequential fires; and
    6. occupant tenability within the building before, during and after the bushfire event; and
    7. combined effects of structural, fire exposure and other effects to which the building may reasonably be subjected; and
    8. provision of fire fighting equipment and water supply to facilitate protection of the building; and
  2. be provided with vehicular access to the site to enable firefighting and emergency personnel to defend or evacuate the building; and
  3. have access to a sufficient supply of water for firefighting purposes on the site; and
  4. provide safe access within the site to the building (including carparking areas), as well as safe egress after the bushfire event.

Applications

G5P2 applies to the following buildings located in a designated bushfire prone area—

  1. a Class 9a health-care building; and
  2. a Class 9b—
    1. early childhood centre; and
    2. primary or secondary school; and
  3. a Class 9c residential care building.

Notes

G5P2 does not guarantee the safety of building occupants or the maintenance of tenable conditions within a building during a bushfire event.

 

G5P2 applies only to Class 9a health-care buildings, Class 9b early childhood centres, primary and secondary schools, and Class 9c residential care buildings constructed in designated bushfire prone areas.

G5P2 sets out additional provisions because occupants may face challenges evacuating the building during a bushfire event. G5P2 provides measures to minimise the risk of an untenable indoor environment for occupants, contributing to their safety during a bushfire event. These measures are to be appropriate to the factors specified under G5P2(a). G5P2 also provides for emergency response activities, including post-bushfire event evacuation.

Verification Methods

(1) Compliance with Performance Requirement G5P1 is verified if the ignition probability for a building exposed to a design bushfire does not exceed 10%.

(2) Bushfire design actions must be determined in consideration of the annual probability of a design bushfire derived from—

  1. assigning the building or structure with an Importance Level in accordance with (3); and
  2. determining the corresponding annual probability of exceedance in accordance with Table G5V1.

(3) A building or structure's Importance Level must be identified as one of the following:

  1. Importance Level 1 — where the building or structure presents a low degree of hazard to life and other property in the case of failure.
  2. Importance Level 2 — where the building or structure is not of Importance Level 1, 3 or 4 or is a Class 2 building accommodating 12 people or less.
  3. Importance Level 3 — where the building is designed to contain a large number of people and is a—
    1. Class 2 building accommodating more than 12 people; or
    2. Class 3 boarding house, guest house, hostel, lodging house or backpackers accommodation; or
    3. Class 3 residential part of a hotel or motel; or
    4. Class 3 residential part of a school.
  4. Importance Level 4 — where the building or structure is—
    1. essential to emergency management or post-disaster recovery; or
    2. associated with hazardous facilities; or
    3. subject to a necessary ‘defend in place’ strategy and is a—
      1. Class 3 accommodation building for the aged, children or people with disabilities; or
      2. Class 3 residential part of a health-care building which accommodates members of staff; or
      3. Class 3 residential part of a detention centre; or
      4. building that operates in the event of a bushfire emergency, such as a public bushfire shelter or a bushfire emergency control centre.

(4) The ignition probability for a building must be assessed by application of the following:

  1. An event tree analysis of relevant bushfire scenarios.
  2. Design bushfire conditions that include combinations of the following actions appropriate to the distance between the building and the bushfire hazard:
    1. Direct attack from airborne burning embers.
    2. Burning debris and accumulated embers adjacent to a building element.
    3. Radiant heat from a bushfire front.
    4. Direct flame attack from a bushfire front.

(5) Applied fire actions must allow for reasonable variations in—

  1. fire weather; and
  2. vegetation, including fuel load, burning behaviour of vegetation (including the potential for crown fires); and
  3. the distance of the building from vegetation; and
  4. topography, including slopes and features that may shield; and
  5. ignition of adjacent buildings, building elements, plants, mulch and other materials; and
  6. effective size of fire front; and
  7. duration of exposure; and
  8. flame height; and
  9. flame tilt; and
  10. flame adhesion to sloping land; and
  11. the height of the building and its elements.

(6) The assessment process must include consideration of—

  1. the probability of non-complying construction of critical aspects of an approved design; and
  2. the probability of critical aspects of an approved design being fully functional during the life of the building; and
  3. inclusion of safety factors; and
  4. sensitivity analysis of critical aspects of a proposed design.

Limitations

G5V1 does not apply to a Class 9 building.

Notes

For a building that is subject to G5P2, and therefore outside the scope of G5V1, the building would need to comply with either—

  1. Performance RequirementG5P2 by means of a Performance Solution; or
  2. the Deemed-to-Satisfy Provisions of G5D4 if the building is located in an area subject to a Bushfire Attack Level (BAL) not exceeding BAL – 12.5.
Table G5V1 Annual Probability of Exceedance (APE) for design bushfire actions
Importance Level Complex analysis APE for bushfire exposure Simple analysis APE for weather conditions (design bushfire)
1 No requirement No requirement
2 1:500 1:50
3 1:1000 1:100
4 1:2000 1:200
Table Notes

Complex analysis must consider the probability of ignition, fire spread to the urban interface and penetration of the urban interface coincident with fire weather conditions.

 

G5V1 is a means to verify the appropriate risk of ignition from a bushfire in order to meet the requirements of G5P1. G5V1 cannot apply to a Class 9 building. For further guidance on the application of the verification methods, refer to the ABCB Buildings in Bushfire Prone Areas Verification Method Handbook.

Deemed-to-Satisfy Provisions

(1) Where a Deemed-to-Satisfy Solution is proposed, Performance Requirements G5P1 and subject to G5D2, G5P2, are satisfied by complying with G5D3 and G5D4.

SA G5D1 Deemed-to-Satisfy Provisions2019: G5.0

Delete subclause G5D1(1) and insert G5D1(1) as follows:

(1) Where a Deemed-to-Satisfy Solution is proposed, Performance Requirements G5P1 and subject to G5D2, G5P2, are satisfied by complying with G5D3 to SA G5D5.

(2) Where a Performance Solution is proposed, the relevant Performance Requirements must be determined in accordance with A2G2(3) and A2G4(3) as applicable.

To clarify that complying with G5D2, and G5D3, G5D4 as applicable will satisfy the requirements of G5P1 and G5P2.

NCC Blurbs

The Deemed-to-Satisfy Provisions of this Part apply in a designated bushfire prone area to—

  1. a Class 2 or 3 building; or
  2. a building located in an area subject to a Bushfire Attack Level (BAL) not exceeding BAL—12.5, determined in accordance with AS 3959 that is—
    1. a Class 9a health-care building; or
    2. a Class 9b—
      1. an early childhood centre; or
      2. a primary or secondary school; or
    3. a Class 9c residential care building; or
  3. a Class 10a building or deck immediately adjacent or connected to a—
    1. Class 2 or 3 building; or
    2. a building of a type listed in (b); or
  4. a Class 4 part of a building associated with a building of a type listed in (b).

Notes

  1. If a building of a type listed in (b), (c)(ii) or (d) is subject to a BAL exceeding BAL—12.5, the building would need to comply with Performance Requirement VIC G5P2 by means of a Performance Solution.
  2. There are no Deemed-to-Satisfy Provisions for these buildings.
NCC Title
Application of Part
NCC State
VIC
NCC Variation Type
Replacement
NCC SPTC Current
Application of Part
NCC Blurbs

The Deemed-to-Satisfy Provisions of this Part apply in a designated bushfire prone area to—

  1. a Class 2 or 3 building; or
  2. a Class 4 part of a building; or
  3. a Class 9 building that is a special fire protection purpose located in an area subject to a Bushfire Attack Level (BAL) not exceeding BAL—12.5, determined in accordance with Planning for Bush Fire Protection; or
  4. a Class 10a building or deck immediately adjacent or connected to a building or part of a type in (a), (b) or (c).

Notes

  1. If a building of a type listed in (c) or (d) where associated with a building listed in (c) is subject to a BAL exceeding BAL—12.5, the building would need to comply with Performance Requirement NSW G5P2 by means of a Performance Solution.
  2. There are no Deemed-to-Satisfy Provisions for these buildings.
NCC Title
Application of Part
NCC State
NSW
NCC Variation Type
Replacement
NCC SPTC Current
Application of Part
NCC Blurbs

(1) The Deemed-to-Satisfy Provisions of this Part apply in a designated bushfire prone area to—

  1. a Class 2 or 3 building; or
  2. a Class 9a health-care building; or
  3. a Class 9b—
    1. an early childhood centre; or
    2. a primary or secondary school; or
  4. a Class 9c residential care building; or
  5. a Class 10a building or deck associated with a building of a type listed in (a) to (d).

(2) The Deemed-to-Satisfy Provisions of this Part do not apply when the classified vegetation is Group F rainforest (excluding wet sclerophyll forest types), mangrove communities and grasslands under 300 mm high.

NCC Title
Application of Part
NCC State
QLD
NCC Variation Type
Replacement
NCC SPTC Current
Application of Part

The Deemed-to-Satisfy Provisions of this Part apply in a designated bushfire prone area to—

  1. a Class 2 or 3 building; or
  2. a building located in an area subject to a Bushfire Attack Level (BAL) not exceeding BAL—12.5, determined in accordance with AS 3959 that is—
    1. a Class 9a health-care building; or
    2. a Class 9b—
      1. early childhood centre; or
      2. primary or secondary school; or
    3. a Class 9c residential care building; or
  3. a Class 10a building or deck immediately adjacent or connected to a—
    1. Class 2 or 3 building; or
    2. a building of a type listed in (b).

Notes

  1. If a building of a type listed in (b) or (c)(ii) is subject to a BAL exceeding BAL—12.5, the building would need to comply with Performance Requirement G5P2 by means of a Performance Solution. There are no Deemed-to-Satisfy Provisions for these buildings.

To clarify that Part G5 applies only to a Class 2 building, a Class 3 building, a Class 9a health-care building, a Class 9b early childhood centre, a Class 9c primary or secondary school, a class 9c residential care building, or a class 10a building or deck immediately adjacent or connected to a building of one of these types.

NCC Blurbs

In a designated bushfire prone area, a Class 2 building, a Class 3 building, a Class 4 part of a building or a Class 10a building or deck immediately adjacent or connected to such a building or part, must comply with the following—

  1. AS 3959 except—
    1. as amended by Planning for Bush Fire Protection; and
    2. for Section 9 Construction for Bushfire Attack Level FZ (BAL-FZ), buildings subject to BAL-FZ must comply with specific conditions of development consent for construction at this level; or
  2. the requirements of (a) above as modified by the development consent following consultation with the NSW Rural Fire Service under section 4.14 of the Environmental Planning and Assessment Act 1979 if required; or
  3. the requirements of (a) above as modified by development consent with a bushfire safety authority issued under section 100B of the Rural Fires Act 1997 for the purposes of integrated development.
NCC Title
Protection
NCC State
NSW
NCC Variation Type
Replacement
NCC SPTC Current
Protection

In a designated bushfire prone area the following must comply with AS 3959:

  1. A Class 2 or 3 building.
  2. A Class 10a building or deck immediately adjacent or connected to a Class 2 or 3 building.

To clarify that compliance with AS 3959 will achieve compliance with Part G5 for Class 2 buildings, Class 3 buildings and Class 10a buildings or decks immediately adjacent or connected to same.

G5D3 adopts AS 3959 — Construction of buildings in bushfire-prone areas for Class 2 buildings, Class 3 buildings and Class 10a buildings or decks immediately adjacent or connected to same. Compliance with this Australian Standard will achieve compliance with Part G5 for these buildings.

The purpose of AS 3959 is to improve the fire resistance performance of buildings that may be subjected to burning debris, radiant heat and flame contact during the passing of a fire front. Construction requirements are dependent on the bushfire hazard level of the site. It should be noted that even though a site may be located in a designated bushfire prone area, if the category of bushfire attack for the particular site is low, there are no special construction requirements specified in AS 3959.

Maintenance plays an important role in the overall strategy of improving the performance of buildings against bushfires. This includes maintenance (or better still, improvement) of the site conditions and maintenance of the building itself.

NCC Blurbs

(1) In a designated bushfire prone area the following must comply with Specification 43:

  1. A Class 9a health-care building.
  2. A Class 9b—
    1. early childhood centre; or
    2. primary or secondary school.
  3. A Class 9c residential care building.
  4. A Class 4 part of a building associated with a building of a type listed in (a) to (c).

(2) In a designated bushfire prone area, a Class 10a building or deck immediately adjacent or connected to a building of a type listed in (1)(a) to (c) must comply with S43C2 and S43C13.

NCC Title
Protection — certain Class 9 buildings
NCC State
VIC
NCC Variation Type
Replacement
NCC SPTC Current
Protection — certain Class 9 buildings
NCC Blurbs

In a designated bushfire prone area, a Class 9 building that is a special fire protection purpose or a Class 10a building or deck immediately adjacent or connected to a such a building or part, must comply with—

  1. for a Class 9 building that is special fire protection purpose, Specification 43 except as amended by Planning for Bush Fire Protection; or
  2. for a Class 10a building or deck immediately adjacent or connected to a Class 9 building that is a special fire protection purpose—
    1. AS 3959 except as amended by Planning for Bush Fire Protection; and
    2. S43C13; or
  3. the requirements of (a) or (b) above as modified by the development consent with a bushfire safety authority issued under section 100B of the Rural Fires Act 1997 for the purposes of integrated development.
NCC Title
Protection – Class 9 buildings used as a special fire protection purpose
NCC State
NSW
NCC Variation Type
Replacement
NCC SPTC Current
Protection – Class 9 buildings used as a special fire protection purpose

(1) In a designated bushfire prone area the following must comply with Specification 43:

  1. A Class 9a health-care building.
  2. A Class 9b—
    1. early childhood centre; or
    2. primary or secondary school.
  3. A Class 9c residential care building.

(2) In a designated bushfire prone area, a Class 10a building or deck immediately adjacent or connected to a building of a type listed in (1) must comply with S43C2 and S43C13.

To clarify that meeting the requirements of Specification 43 will achieve compliance with Part G5D4(1) and meeting the requirements of S43C2 and S43C13 will achieve compliance with G5D4(2) for the specified building types.

G5D4 adopts Specification 43 – Bushfire protection for certain Class 9 buildings. Meeting the requirements of this Specification will achieve compliance with Part G5.

NCC Blurbs

Where a site is located in a designated bushfire prone area, the bushfire attack level that applies to the site is—

  1. for areas identified as general bushfire risk areas in the Planning and Design Code, the BAL-Low bushfire attack level; and
  2. for areas identified as medium bushfire risk areas in the Planning and Design Code, the BAL-12.5 bushfire attack level; and
  3. for areas identified as high bushfire risk areas in the Planning and Design Code, the bushfire attack level assessed for the site in accordance with the requirements of AS 3959; and
  4. for areas identified as urban interface in the Planning and Design Code that are within 500 m of a high bushfire risk area, the BAL-Low bushfire attack level; and
  5. for areas identified as urban interface in the Planning and Design Code that are within 100 m of a high bushfire risk area, the bushfire attack level assessed for the site in accordance with AS 3959.
NCC Title
Bushfire attack levels
NCC State
SA
NCC Variation Type
Insertion
NCC SPTC Current
Bushfire attack levels