NCC 2022 Volume One - Building Code of Australia Class 2 to 9 buildings
B1
Part B1 Structural provisions
Part B1 Structural provisions
Introduction to this Part
This Part focuses on safeguarding people from injury caused by structural failure, loss of amenity caused by structural behaviour (deflections, creep, vibration, settlement and the like), protection of other property from physical damage caused by structural failure and safeguarding people from injury that may be caused by failure of, or impact with, glazing.
Objectives
B1O1
Objective
2019: BO1
The Objective of this Part is to—
safeguard people from injury caused by structural failure; and
safeguard people from loss of amenity caused by structural behaviour; and
protect other property from physical damage caused by structural failure; and
safeguard people from injury that may be caused by failure of, or impact with, glazing.
(1) By resisting the actions to which it may reasonably be expected to be subjected, a building or structure, during construction and use, with appropriate degrees of reliability, must—
perform adequately under all reasonably expected design actions; and
withstand extreme or frequently repeated design actions; and
be designed to sustain local damage, with the structural system as a whole remaining stable and not being damaged to an extent disproportionate to the original local damage; and
(2) The actions to be considered to satisfy (1) include but are not limited to—
permanent actions (dead loads) including, for a Class 7b building, an additional notional permanent roof load of not less than 0.15 kPa to support the addition of solar photovoltaic panels; and
imposed actions (live loads arising from occupancy and use); and
wind action; and
earthquake action; and
snow action; and
liquid pressure action; and
ground water action; and
rainwater action (including ponding action); and
earth pressure action; and
differential movement; and
time dependent effects (including creep and shrinkage); and
thermal effects; and
ground movement caused by—
swelling, shrinkage or freezing of the subsoil; and
landslip or subsidence; and
siteworks associated with the building or structure; and
The requirement for an additional notional permanent roof load to support photovoltaic panels in B1P1(2)(a) does not apply to a Class 7b building—
where 100% of the roof area is shaded for more than 70% of daylight hours; or
with a roof area of not more than 55 m2; or
where more than 50% of the roof area is used as a terrace, carpark, roof garden, roof light or the like.
Notes
The requirement in B1P1(2)(a) to consider, for a Class 7b building, an additional notional permanent roof load of not less than 0.15 kPa to support the addition of solar photovoltaic panels does not take effect until 1 October 2023.
The structural resistance of materials and forms of construction must be determined using five percentile characteristic material properties with appropriate allowance for—
known construction activities; and
type of material; and
characteristics of the site; and
the degree of accuracy inherent in the methods used to assess the structural behaviour; and
action effects arising from the differential settlement of foundations, and from restrained dimensional changes due to temperature, moisture, shrinkage, creep and similar effects.
Building work in designated flood areas is regulated by the Building Act 1975 and the Queensland Development Code 3.5 - Construction of buildings in flood hazard areas
NCC ID
idm5649
(1) A building in a flood hazard area, must be designed and constructed, to the degree necessary, to resist flotation, collapse or significant permanent movement resulting from the action of hydrostatic, hydrodynamic, erosion and scour, wind and other actions during the defined flood event.
(2) The actions and requirements to be considered to satisfy (1) include but are not limited to—
(1) This Verification Method is applicable to components with a resistance coefficient of variation of at least 10% and not more than 40%.
(2) Where a component has a calculated resistance coefficient of variation of less than 10%, then a minimum value of 10% must be used.
(3) Compliance with B1P1 and B1P2 is verified for the design of a structural component for strength where—
the capacity reduction factor satisfies , where are capacity reduction factors for all relevant actions and must contain at least permanent (G), imposed (Q) and wind (W) actions; and
the capacity reduction factors are calculated for target reliability indices for permanent action , for imposed action , for wind action ,… in accordance with the equation: , where—
; and
, where—
= ratio of mean resistance to nominal; and
= ratio of mean action to nominal; and
= correction factor for action; and
= correction factor for resistance; and
= coefficient of variation of the appropriate action as given in Table B1V1a; and
= coefficient of variation of the resistance; and
= appropriate load factor for the action as given in AS/NZS 1170.0; and
= capacity factor for the appropriate action; and
the annual target reliability indices are established as follows:
For situations where it is appropriate to compare an equivalent Deemed-to-Satisfy product, a resistance model must be established for the equivalent Deemed-to-Satisfy product and must be calculated for the equivalent Deemed-to-Satisfy product in accordance with the equation given at (b).
The target reliability indices thus established, must be not less than those given in Table B1V1b minus 0.5.
For situations where it is not appropriate to compare with an equivalent Deemed-to-Satisfy product, the target reliability index must be as given in Table B1V1b.
(4) The resistance model for the component must be established by taking into account variability due to material properties, fabrication and construction processes and structural modelling.
Table B1V1a Annual action models
Design action
Ratio of mean action to nominal
Coefficient of variation of the action
Permanent action
Imposed action
Wind action (non-cyclonic)
Wind action (cyclonic)
Snow action
Earthquake action
Table B1V1b Annual target reliability indices
Type of action
Target reliability index β
Permanent action
4.3
Imposed action
4.0
Wind, snow and earthquake action
3.7
Table Notes
Table B1V1b is applicable for components that exhibit brittle failure similar to concrete as specified in AS 3600.
For components with creep characteristics similar to timber as specified in AS 1720.1, the target reliability index for permanent action must be increased to 5.0.
The above target reliability indices are based on materials or systems that exhibit creep or brittle failure similar to timber or concrete.
Table B1V1b may also be applicable to materials or systems that exhibit creep or brittle failure differently to steel, timber or concrete provided the creep or brittle nature of the material or system are properly accounted for in the design model.
The above target reliability indices are also applicable for materials or systems that exhibit ductile failure characteristics.
(1) Compliance with B1P1(1)(c) is verified for structural robustness if (2) and (3) are complied with.
(2) The structure is assessed such that the building remains stable and the resulting collapse does not extend further than the immediately adjacent storeys upon the notional removal in isolation of—
any supporting column; or
any beam supporting one or more columns; or
any segment of a load bearing wall of length equal to the height of the wall.
(3) It is demonstrated that if a supporting structural component is relied upon to carry more than 25% of the total structure, a systematic risk assessment of the building is undertaken and critical high risk components are identified and designed to cope with the identified hazard or protective measures chosen to minimise the risk.
The resistance of a building or structure must be greater than the most critical action effect resulting from different combinations of actions, where—
the most critical action effect on a building or structure is determined in accordance with B1D3 and the general design procedures contained in AS/NZS 1170.0; and
the resistance of a building or structure is determined in accordance with B1D4.
the applicable annual probability of design event for safety, determined by—
assigning the building or structure an Importance Level in accordance with Table B1D3a; and
determining the corresponding annual probability of exceedance in accordance with WA Table B1D3b; and
AS/NZS 1170.2, except where varied by WA Part B2; and
AS/NZS 1170.3 as appropriate; and
AS 1170.4; and
in cyclonic areas, metal roof cladding, its connections and immediate supporting members must comply with Specification 4; and
for the purposes of (v), cyclonic areas are those determined as being located in wind regions B2, C and D in accordance with AS/NZS 1170.2, except where varied by WA Part B2.
Actions not covered in (a), (b) and (c) above:
the nature of the action; and
the nature of the building or structure; and
the Importance Level of the building or structure determined in accordance with Table B1D3a; and
AS/NZS 1170.1.
For the purposes of (d) the actions include but are not limited to—
liquid pressure action; and
ground water action; and
rainwater action (including ponding action); and
earth pressure action; and
differential movement; and
time dependent effects (including creep and shrinkage); and
thermal effects; and
ground movement caused by—
swelling, shrinkage or freezing of the subsoil; and
landslip or subsidence; and
siteworks associated with the building or structure; and
Table B1D3a Importance Levels of buildings and structures
Importance level
Building Types
1
Buildings or structures presenting a low degree of hazard to life and other property in the case of failure.
2
Buildings or structures not included in Importance Level 1, 3 and 4.
3
Buildings or structures that are designed to contain a large number of people.
4
Buildings or structures that are essential to post-disaster recovery or associated with hazardous facilities.
Insert WA table (B1D3b) B1D3 as follows:
WA Table B1D3b: Design events for safety
Importance Level
Annual probability of exceedance for non-cyclonic wind
Annual probability of exceedance for cyclonic wind other than Wind Region D north of the Tropic of Capricorn
Annual probability of exceedance for cyclonic wind in Wind Region D north of the Tropic of Capricorn
Annual probability of exceedance for snow
Annual probability of exceedance for earthquake
1
1:100
1:200
1:250
1:100
1:250
2
1:500
1:500
1:1000
1:150
1:500
3
1:1000
1:1000
1:2000
1:200
1:1000
4
1:2000
1:2000
1:5000
1:250
1:1500
Notes
B1D3(a)(iv) does not take effect until 1 October 2023.
Exemptions
B1D3(a)(iv) does not apply to a Class 7b building—
where 100% of the roof area is shaded for more than 70% of daylight hours; or
with a roof area of not more than 55m2; or
where more than 50% of the roof area is used as a terrace, carpark, roof garden, roof light or the like.
Explanatory information
In Western Australia state variations apply to wind regions B and D, this includes wind region B2 as referenced in AS/NZS 1170.2.
The state variation for wind region B or B2 will ensure that designers consider the combination of peak external pressures and increased internal pressures in design of buildings and use a cyclonic (C) classification instead of non-cyclonic (N) classification. The definition of design wind speed is varied in WA Schedule 1 to identify that wind region B is a C classification in Western Australia. Other changes have also been made to reflect this.
In addition to a variation to clauses B1D3 and B1D4, a variation is made to the application of AS/NZS 1170.2 when used as either a primary referenced document or a secondary or subsequent referenced document. Refer to WA Schedule 2 and WA Part B2.
The state variation for wind region D applies only to those parts of region D located north of the Tropic of Capricorn. The 2021 edition of AS/NZS 1170.2 includes a reduction in design wind speeds for wind region D. The variation will retain similar design wind speeds for wind region D as the 2011 edition of AS/NZS 1170.2 previously referenced in the National Construction Code.
NCC Title
Determination of individual actions
NCC State
WA
NCC Variation Type
Replacement
NCC SPTC Current
Determination of individual actions
NCC ID
_dcf11942-da0b-4e21-8841-886caff9fea6
The magnitude of individual actions must be determined in accordance with the following:
Permanent actions:
the design or known dimensions of the building or structure; and
the unit weight of the construction; and
AS/NZS 1170.1; and
for a Class 7b building, a notional additional permanent roof load of not less than 0.15 kPa to support the addition of solar photovoltaic panels.
Imposed actions:
the known loads that will be imposed during the occupation or use of the building or structure; and
Determination of structural resistance of materials and forms of construction
2019: B1.4
NCC Blurbs
The structural resistance of materials and forms of construction must be determined in accordance with the following, as appropriate:
Masonry (including masonry-veneer, unreinforced masonry and reinforced masonry): AS 3700, except—
‘(for piers—isolated or engaged)’ is removed from Clause 8.5.1(d); and
where Clause 8.5.1 requires design as for unreinforced masonry in accordance with Section 7, the member must also be designed as unreinforced masonry in accordance with Tables 10.3 and 4.1(a)(i)(C) of AS 3700.
Concrete:
Concrete construction (including reinforced and prestressed concrete): AS 3600.
Autoclaved aerated concrete: AS 5146.1.
Post-installed and cast-in fastenings: AS 5216.
Steel construction:
Steel structures: AS 4100.
Cold-formed steel structures: AS/NZS 4600.
Residential and low-rise steel framing: NASH Standard – Residential and Low-Rise Steel Framing Part 1 or Part 2.
Composite steel and concrete: AS/NZS 2327.
Aluminium construction: AS/NZS 1664.1 or AS/NZS 1664.2.
Timber construction:
Design of timber structures: AS 1720.1.
Timber structures: AS 1684.2, AS 1684.3 or AS 1684.4.
Nailplated timber roof trusses: AS 1720.5.
Piling: AS 2159.
Glazed assemblies:
The following glazed assemblies in an external wall must comply with AS 2047:
Windows excluding those listed in (ii).
Sliding and swinging glazed doors with a frame, including french and bi-fold doors with a frame.
Adjustable louvres.
Shopfronts.
Window walls with one piece framing.
All glazed assemblies not covered by (i) and the following glazed assemblies must comply with AS 1288:
Skylights, roof lights and windows in other than the vertical plane.
Sliding and swinging doors without a frame.
Windows constructed on site and architectural one-off windows, which are not design tested in accordance with AS 2047.
Second-hand windows, re-used windows and recycled windows.
Heritage windows.
Glazing used in balustrades and sloping overhead glazing.
Termite Risk Management: Where a primary building element is subject to attack by subterranean termites: AS 3660.1, and—
for the purposes of this provision, a primary building element consisting entirely of, or a combination of, any of the following materials is considered not subject to termite attack:
Steel, aluminium or other metals.
Concrete.
Masonry.
Fibre-reinforced cement.
Timber — naturally termite resistant in accordance with Appendix C of AS 3660.1.
Timber — preservative treated in accordance with Appendix D of AS 3660.1; and
a durable notice must be permanently fixed to the building in a prominent location, such as a meter box or the like, indicating—
the termite management system used; and
the date of installation of the system; and
where a chemical is used, its life expectancy as listed on the appropriate authority's pesticides register label; and
the installer’s or manufacturer’s recommendations for the scope and frequency of future inspections for termite activity.
Roof construction (except in cyclonic areas):
Terracotta, fibre-cement and timber slates and shingles: AS 4597.
Roof tiling: AS 2050.
Cellulose cement corrugated sheets: AS/NZS 2908.1 with safety mesh installed in accordance with AS 1562.3 clause 2.4.3.2 except for sub-clause (c)(vii) for plastic sheeting.
Metal roofing: AS 1562.1.
Particleboard structural flooring: AS 1860.2.
Garage doors and other large access doors in openings not more than 3 m in height in external walls of buildings determined as being located in wind region B2, C or D in accordance with AS/NZS 1170.2: AS/NZS 4505.
Lift shafts which are not required to have an FRL, must—
except as required by (ii), be completely enclosed with non-perforated material between the bottom of the pit and the ceiling of the lift shaft, other than—
at landing doors, emergency doors and pit access doors; and
in atriums and observation areas, be protected with non-perforated material not less than 2.5 m in height—
above any places on which a person can stand, which are within 800 mm horizontal reach of any vertical moving lift component including ropes and counterweights; and
at the lowest level of the atrium area that the lift serves, on all sides except the door opening, for not less than 2.5 m in height, by enclosure with non-perforated material; and
Table B1D4 Material and minimum thickness of glazing and polycarbonate sheet
Application
Lift shaft vision panels more than 65 000 mm2, door panels, and lift shafts
Lift shaft vision panels less than or equal to 65 000 mm2
Laminated glass
10 mm (0.76 mm interlayer)
6 mm (0.76 mm interlayer)
Toughened/ laminated glass
10 mm (0.76 mm interlayer)
6 mm (0.76 mm interlayer)
Annealed glass with security polyester film coating
10 mm
6 mm
Safety wire glass
Not applicable
Subject to fire test
Polycarbonate sheet
13 mm
6 mm
NCC Title
Determination of structural resistance of materials and forms of construction
NCC State
WA
NCC Variation Type
Replacement
NCC SPTC Current
Determination of structural resistance of materials and forms of construction
NCC ID
_0880ce0e-cee6-44dd-b21e-c882fa64876c
NCC Blurbs
The structural resistance of materials and forms of construction must be determined in accordance with the following, as appropriate:
Masonry (including masonry-veneer, unreinforced masonry and reinforced masonry): AS 3700, except—
‘(for piers—isolated or engaged)’ is removed from Clause 8.5.1(d); and
where Clause 8.5.1 requires design as for unreinforced masonry in accordance with Section 7, the member must also be designed as unreinforced masonry in accordance with Tables 10.3 and 4.1(a)(i)(C) of AS 3700.
Concrete:
Concrete construction (including reinforced and prestressed concrete): AS 3600.
Autoclaved aerated concrete: AS 5146.1.
Post-installed and cast-in fastenings: AS 5216.
Steel construction:
Steel structures: AS 4100.
Cold-formed steel structures: AS/NZS 4600.
Residential and low-rise steel framing: NASH Standard – Residential and Low-Rise Steel Framing Part 1 or Part 2.
Composite steel and concrete: AS/NZS 2327.
Aluminium construction: AS/NZS 1664.1 or AS/NZS 1664.2.
Timber construction:
Design of timber structures: AS 1720.1.
Timber structures: AS 1684.2, AS 1684.3 or AS 1684.4.
Nailplated timber roof trusses: AS 1720.5.
Timber used for structural purposes: a species scheduled for the appropriate use in Schedules A, B or C of Book 2 of the ‘Queensland Government, Department of Agriculture, Fisheries and Forestry - Construction timbers in Queensland, Book 1 and Book 2 - Properties and specifications for satisfactory performance of construction timbers in Queensland - Class 1 and 10 buildings (Houses, carports, garages, greenhouses and sheds)’.
Piling: AS 2159.
Glazed assemblies:
The following glazed assemblies in an external wall must comply with AS 2047:
Windows excluding those listed in (ii).
Sliding and swinging glazed doors with a frame, including french and bi-fold doors with a frame.
Adjustable louvres.
Shopfronts.
Window walls with one piece framing.
All glazed assemblies not covered by (i) and the following glazed assemblies must comply with AS 1288:
Skylights, roof lights and windows in other than the vertical plane.
Sliding and swinging doors without a frame.
Windows constructed on site and architectural one-off windows, which are not design tested in accordance with AS 2047.
Second-hand windows, re-used windows and recycled windows.
Heritage windows.
Glazing used in balustrades and sloping overhead glazing.
Termite Risk Management: Where a primary building element is subject to attack by subterranean termites: AS 3660.1, and—
for the purposes of this provision, a primary building element consisting entirely of, or a combination of, any of the following materials is considered not subject to termite attack:
Steel, aluminium or other metals.
Concrete.
Masonry.
Fibre-reinforced cement.
Timber — naturally termite resistant in accordance with Appendix C of AS 3660.1.
Timber — preservative treated in accordance with Appendix D of AS 3660.1; and
a durable notice must be permanently fixed to the building in a prominent location, such as a meter box or the like, indicating—
the termite management system used; and
the date of installation of the system; and
where a chemical is used, its life expectancy as listed on the appropriate authority’s pesticides register label; and
the installer’s or manufacturer’s recommendations for the scope and frequency of future inspections for termite activity.
Roof construction (except in cyclonic areas):
Roof tiling: AS 2050.
Cellulose cement corrugated sheets: AS/NZS 2908.1 with safety mesh installed in accordance with AS/NZS 1562.3 clause 2.4.3.2 except for sub-clause (g) for plastic sheeting.
Metal roofing: AS 1562.1.
Particleboard structural flooring: AS 1860.2.
Garage doors and other large access doors in openings not more than 3 m in height in external walls of buildings determined as being located in wind region C or D in accordance with AS/NZS 1170.2: AS/NZS 4505.
Lift shafts which are not required to have an FRL, must—
except as required by (ii), be completely enclosed with non-perforated material between the bottom of the pit and the ceiling of the lift shaft, other than—
at landing doors, emergency doors and pit access doors; and
in atrium and observation areas, be protected with non-perforated material not less than 2.5 m in height—
above any places on which a person can stand, which are within 800 mm horizontal reach of any vertical moving lift component including ropes and counterweights; and
at the lowest level of the atrium area that the lift serves, on all sides except the door opening, for not less than 2.5 m in height, by enclosure with non-perforated material; and
QLD Table B1D4: Material and minimum thickness of glazing and polycarbonate sheet
Application
Lift shaft vision panels more than 65,000 mm2, door panels, and lift shafts
Lift shaft vision panels less than or equal to 65,000 mm2
Laminated glass
10 mm (0.76 mm interlayer)
6 mm (0.76 mm interlayer)
Toughened/laminated glass
10 mm (0.76 mm interlayer)
6 mm (0.76 mm interlayer)
Annealed glass with security polyester film coating
10 mm
6 mm
Safety wire glass
Not applicable
Subject to fire test
Polycarbonate sheet
13 mm
6 mm
NCC Title
Determination of structural resistance of materials and forms of construction
NCC State
QLD
NCC Variation Type
Replacement
NCC SPTC Current
Determination of structural resistance of materials and forms of construction
NCC ID
_6c4c959b-439d-4d0d-87ce-a473ec5ee7c4
Building Classes
1a,1b,10a,10b,10c
NCC Blurbs
The structural resistance of materials and forms of construction must be determined in accordance with the following, as appropriate:
Masonry (including masonry-veneer, unreinforced masonry and reinforced masonry): AS 3700, except—
‘(for piers—isolated or engaged)’ is removed from Clause 8.5.1(d); and
where Clause 8.5.1 requires design as for unreinforced masonry in accordance with Section 7, the member must also be designed as unreinforced masonry in accordance with Tables 10.3 and 4.1(a)(i)(C) of AS 3700.
Concrete:
Concrete construction (including reinforced and prestressed concrete): AS 3600.
Autoclaved aerated concrete: AS 5146.1.
Post-installed and cast-in fastenings: AS 5216.
Steel construction:
Steel structures: AS 4100.
Cold-formed steel structures: AS/NZS 4600.
Residential and low-rise steel framing: NASH Standard – Residential and Low-Rise Steel Framing Part 1 or Part 2.
Composite steel and concrete: AS/NZS 2327.
Aluminium construction: AS/NZS 1664.1 or AS/NZS 1664.2.
Timber construction:
Design of timber structures: AS 1720.1.
Timber structures: AS 1684.2, AS 1684.3 or AS 1684.4.
Nailplated timber roof trusses: AS 1720.5.
Piling: AS 2159.
Glazed assemblies:
The following glazed assemblies in an external wall must comply with AS 2047:
Windows excluding those listed in (ii).
Sliding and swinging glazed doors with a frame, including french and bi-fold doors with a frame.
Adjustable louvres.
Shopfronts.
Window walls with one piece framing.
All glazed assemblies not covered by (i) and the following glazed assemblies must comply with AS 1288:
Skylights, roof lights and windows in other than the vertical plane.
Sliding and swinging doors without a frame.
Windows constructed on site and architectural one-off windows, which are not design tested in accordance with AS 2047.
Second-hand windows, re-used windows and recycled windows.
Heritage windows.
Glazing used in balustrades and sloping overhead glazing.
Termite Risk Management: Where a primary building element is subject to attack by subterranean termites—
AS 3660.1 with additional protection measures to be used in areas where Mastrotermes Darwiniensis are prevalent; and
for the purposes of this provision, a primary building element consisting entirely of, or a combination of, any of the following materials is considered not to be subject to termite attack:
Steel, aluminium or other metals.
Concrete.
Masonry.
Fibre-reinforced cement.
Timber in areas where Mastrotermes Darwiniensis are not prevalent — naturally termite resistant in accordance with Appendix C of AS 3660.1.
Timber — preservative treated in accordance with Appendix D of AS 3660.1; and
where a termite risk management system in accordance with AS 3660.1 is used, a durable notice must be permanently fixed to the building in a prominent location, such as a meter box or the like, indicating—
the method of termite risk management; and
the date of installation of the system; and
where a chemical is used, its life expectancy as listed on the appropriate authority’s pesticides register label; and
the installer’s or manufacturer’s recommendations for the scope and frequency of future inspections for termite activity.
Roof construction (except in cyclonic areas):
Roof tiling: AS 2050.
Cellulose cement corrugated sheets: AS/NZS 2908.1 with safety mesh installed in accordance with AS/NZS 1562.3 clause 2.4.3.2 except for sub-clause (g) for plastic sheeting.
Metal roofing: AS 1562.1.
Garage doors and other large access doors in openings not more than 3 m in height in external walls of buildings determined as being located in wind region C or D in accordance with AS/NZS 1170.2: AS/NZS 4505.
Lift shafts which are not required to have an FRL, must—
except as required by (ii), be completely enclosed with non-perforated material between the bottom of the pit and the ceiling of the lift shaft, other than—
at landing doors, emergency doors and pit access doors; and
in atrium and observation areas, be protected with non-perforated material not less than 2.5 m in height—
above any places on which a person can stand, which are within 800 mm horizontal reach of any vertical moving lift component including ropes and counterweights; and
at the lowest level of the atrium area that the lift serves, on all sides except the door opening, for not less than 2.5 m in height, by enclosure with non-perforated material; and
NT Table B1D4: Material and minimum thickness of glazing and polycarbonate sheet
Application
Lift shaft vision panels more than 65,000 mm2, door panels, and lift shafts
Lift shaft vision panels less than or equal to 65,000 mm2
Laminated glass
10 mm (0.76 mm interlayer)
6 mm (0.76 mm interlayer)
Toughened/laminated glass
10 mm (0.76 mm interlayer)
6 mm (0.76 mm interlayer)
Annealed glass with security polyester film coating
10 mm
6 mm
Safety wire glass
Not applicable
Subject to fire test
Polycarbonate sheet
13 mm
6 mm
NCC Title
Determination of structural resistance of materials and forms of construction
NCC State
NT
NCC Variation Type
Replacement
NCC SPTC Current
Determination of structural resistance of materials and forms of construction
NCC ID
_e22a19da-1472-40b2-9442-090ab11f261d
Building Classes
1a,1b,10a,10b,10c
The structural resistance of materials and forms of construction must be determined in accordance with the following, as appropriate:
Masonry (including masonry-veneer, unreinforced masonry and reinforced masonry): AS 3700, except—
‘(for piers—isolated or engaged)’ is removed from Clause 8.5.1(d); and
where Clause 8.5.1 requires design as for unreinforced masonry in accordance with Section 7, the member must also be designed as unreinforced masonry in accordance with Tables 10.3 and 4.1(a)(i)(C) of AS 3700.
Concrete:
Concrete construction (including reinforced and prestressed concrete): AS 3600.
Autoclaved aerated concrete: AS 5146.1 and AS 5146.3.
Post-installed and cast-in fastenings: AS 5216.
Steel construction:
Steel structures: AS 4100.
Cold-formed steel structures: AS/NZS 4600.
Residential and low-rise steel framing: NASH Standard – Residential and Low-Rise Steel Framing Part 1 or Part 2.
Composite steel and concrete: AS/NZS 2327.
Aluminium construction: AS/NZS 1664.1 or AS/NZS 1664.2.
Timber construction:
Design of timber structures: AS 1720.1.
Timber structures: AS 1684.2, AS 1684.3 or AS 1684.4.
Nailplated timber roof trusses: AS 1720.5.
Piling: AS 2159.
Glazed assemblies:
The following glazed assemblies in an external wall must comply with AS 2047:
Windows excluding those listed in (ii).
Sliding and swinging glazed doors with a frame, including french and bi-fold doors with a frame.
Adjustable louvres.
Shopfronts.
Window walls with one piece framing.
All glazed assemblies not covered by (i) and the following glazed assemblies must comply with AS 1288:
Skylights, roof lights and windows in other than the vertical plane.
Sliding and swinging doors without a frame.
Windows constructed on site and architectural one-off windows, which are not design tested in accordance with AS 2047.
Second-hand windows, re-used windows and recycled windows.
Heritage windows.
Glazing used in balustrades and sloping overhead glazing.
Termite Risk Management: Where a primary building element is subject to attack by subterranean termites: AS 3660.1, and—
for the purposes of this provision, a primary building element consisting entirely of, or a combination of, any of the following materials is considered not subject to termite attack:
Steel, aluminium or other metals.
Concrete.
Masonry.
Fibre-reinforced cement.
Timber — naturally termite resistant in accordance with Appendix C of AS 3660.1.
Timber — preservative treated in accordance with Appendix D of AS 3660.1; and
a durable notice must be permanently fixed to the building in a prominent location, such as a meter box or the like, indicating—
the termite management system used; and
the date of installation of the system; and
where a chemical is used, its life expectancy as listed on the appropriate authority’s pesticides register label; and
the installer’s or manufacturer’s recommendations for the scope and frequency of future inspections for termite activity.
Roof construction (except in cyclonic areas):
Terracotta, fibre-cement and timber slates and shingles: AS 4597.
Roof tiling: AS 2050.
Cellulose cement corrugated sheets: AS/NZS 2908.1 with safety mesh installed in accordance with AS 1562.3 clause 2.4.3.2 except for sub-clause (c)(vii) for plastic sheeting.
Metal roofing: AS 1562.1.
Particleboard structural flooring: AS 1860.2.
Garage doors and other large access doors in openings not more than 3 m in height in external walls of buildings determined as being located in wind region C or D in accordance with AS/NZS 1170.2: AS/NZS 4505.
Lift shafts which are not required to have an FRL, must—
except as required by (ii), be completely enclosed with non-perforated material between the bottom of the pit and the ceiling of the lift shaft, other than—
at landing doors, emergency doors and pit access doors; and
in atrium and observation areas, be protected with non-perforated material not less than 2.5 m in height—
above any places on which a person can stand, which are within 800 mm horizontal reach of any vertical moving lift component including ropes and counterweights; and
at the lowest level of the atrium area that the lift serves, on all sides except the door opening, for not less than 2.5 m in height, by enclosure with non-perforated material; and
(1) Structural software used in computer aided design of a building or structure, that uses design criteria based on the Deemed-to-Satisfy Provisions of the BCA, including its referenced documents, for the design of steel or timber trussed roof and floor systems and framed building systems, must comply with the ABCB Protocol for Structural Software.
(2) Structural software referred to in (1) can only be used for buildings within the following geometric limits:
The distance from ground level to the underside of eaves must not exceed 6 m.
The distance from ground level to the highest point of the roof, neglecting chimneys, must not exceed 8.5 m.
The building width including roofed verandahs, excluding eaves, must not exceed 16 m.
The building length must not exceed five times the building width.
The roof pitch must not exceed 35 degrees.
(3) The requirements of (1) do not apply to design software for individual frame members such as electronic tables similar to those provided in—
AS 1684; or
NASH Standard Residential and Low-Rise Steel Framing Part 2.
(1) A Class 2 or 3 building, Class 9a health-care building, Class 9c building or Class 4 part of a building, in a flood hazard area must comply with the ABCB Standard for Construction of Buildings in Flood Hazard Areas.
(2) The definitions of flood hazard area and freeboard in the ABCB Standard for Construction of Buildings in Flood Hazard Areas are replaced with those in VIC Schedule 1.
(3) The definition of defined flood level in the ABCB Standard for Construction of Buildings in Flood Hazard Areas is replaced with that in VIC Schedule 1.
NCC Title
Construction of buildings in flood hazard areas
NCC State
VIC
NCC Variation Type
Replacement
NCC SPTC Current
Construction of buildings in flood hazard areas
NCC ID
_4127b7de-bd5c-412c-8b2f-1ce63a3894c9
Building Classes
1a,1b,5,6,7a,7b,8,9b,10a,10b,10c
NCC Title
Construction of buildings in flood hazard areas
NCC State
QLD
NCC Variation Type
Deletion
NCC SPTC Current
Construction of buildings in flood hazard areas
NCC Notice
Building work in designated flood hazard areas is regulated by the Building Act 1975, and the Queensland Development Code 3.5 - Construction of buildings in flood hazard areas.
NCC ID
idm7499
(1) A building in a flood hazard area must comply with the ABCB Standard for Construction of Buildings in Flood Hazard Areas.
(2) The requirements of (1) only apply to a Class 2 or 3 building, Class 9a health-care building, Class 9c building or a Class 4 part of a building.