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Definitions

Note: States and Territories may vary or add to the definitions contained in Open link in same pageSchedule 3 at the relevant State or Territory Appendix.

In the NCC unless the contrary intention appears—

Accessible means having features to enable use by people with a disability. Accessway means a continuous Open link in same pageaccessible path of travel (as defined in AS 1428.1) to, into or within a building. Accredited Testing Laboratory means—
  1. an organisation accredited by the National Association of Testing Authorities (NATA) to undertake the relevant tests; or
  2. an organisation outside Australia accredited to undertake the relevant tests by an authority recognised by NATA through a mutual recognition agreement; or
  3. an organisation recognised as being an Open link in same pageAccredited Testing Laboratory under legislation at the time the test was undertaken.
Activity support level means the degree to which occupants can undertake activities with respect to the likely Open link in same pageactivity traits and Open link in same pageoccupant traits.
Explanatory information:

This term is used to articulate whether the height of a room or space is sufficient and by what degree. This is achieved by having regard to the room or space's intended use by occupants, through consideration of the defined terms 'Open link in same pageactivity traits' and 'Open link in same pageoccupant traits'.

Activity traits , for the purposes of Volume One, means the features of the activities that will be undertaken in a Open link in same pagehabitable room or space. Activity traits , for the purposes of Volume Two, means the features of the activities that will be undertaken in a room or space.
Explanatory information:

This term is used to describe the characteristics of the activities that will be undertaken in a room or space.

For example, the activities likely to be undertaken in a bedroom, and the associated features are—

  • sleeping — a person laying horizontally; and
  • resting — a person laying horizontally or sitting upright on the bed; and
  • leisure activities, such as reading a book — a person sitting upright on the bed, with enough space to stretch their arms vertically; and
  • dressing/changing clothes — a person standing with enough space to stretch their arms vertically.
Administering body means the body responsible for administering the Open link in same pageWaterMark Certification Scheme. Aged care building means a Class 9c building for residential accommodation of aged persons who, due to varying degrees of incapacity associated with the ageing process, are provided with Open link in same pagepersonal care services and 24 hour staff assistance to evacuate the building during an emergency. Air-conditioning , for the purposes of Open link in same pageSection J of Volume One, means a Open link in same pageservice that actively cools or heats the air within a space, but does not include a Open link in same pageservice that directly
  1. cools or heats cold or hot rooms; or
  2. maintains specialised conditions for equipment or processes, where this is the main purpose of the Open link in same pageservice.
Alarm zone , for the purposes of Open link in same pageSpecification E2.2d of Volume One, means an area of a building protected by one or more smoke alarms connected to one alarm circuit. Alpine area means an area given in Open link in same pageFigure 1 and in Open link in same pageTable 1 for specific locations, and is—
  1. likely to be subject to significant snowfalls; and
  2. in New South Wales, A.C.T. or Victoria more than 1200 m above the Australian Height Datum; and
  3. in Tasmania more than 900 m above the Australian Height Datum.
Figure 1 Alpine areas
Show Full Sized Image
Note:

This map is approximate only and altitude above Australian Height Datum must be used to determine whether the building falls into an Open link in same pageAlpine area region.

Table 1 Alpine areas where snow loads are significant

Location

Map identifier

Kiandra (NSW)

1

Mount Kosciuszko (NSW)

2

Perisher Valley (NSW)

3

Thredbo (NSW)

4

Cabramurra (NSW)

5

Charlotte Pass Village (NSW)

6

Diggers Creek (NSW)

7

Guthega Village (NSW)

8

Mount Blue Cow (NSW)

9

Mount Selwyn (NSW)

10

Perisher Range (NSW)

11

Rules Point (NSW)

12

Sawpit Creek (NSW)

13

Smiggin Holes (NSW)

14

Smiggin Range (NSW)

15

Three Mile Dam (NSW)

16

Wilsons Valley (NSW)

17

Falls Creek (Vic.), including Summit Area, Sun Valley and Village Bowl

18

Mount Baw Baw (Vic.)

19

Mount Buffalo (Vic.), including Chalet, Dingo Dell and Tatra

20

Mount Buller (Vic.), including Baldy and Village

21

Mount Hotham (Vic.), including Davenport and Village Centre

22

Dinner Plain (Vic.)

23

Lake Mountain (Vic.)

24

Mount Stirling (Vic.)

25

Ben Lomond Ski Field (Tas.)

26

Cradle Valley (Tas.)

27

Great Lake Area (Tas.)

28

Mount Field Ski Field (Tas.)

29

Explanatory information:

Open link in same pageAlpine area are located in New South Wales, Victoria and Tasmania.

Open link in same pageAlpine area are areas 1200 m or more above Australian Height Datum (AHD) for New South Wales, Australian Capital Territory and Victoria, and 900 m or more above AHD for Tasmania, as shown in Open link in same pageFigure 1.

Open link in same pageAlpine area are considered to receive significant snowfalls (snowfalls that result in an average snow accumulation on the ground of 175 mm or greater). Regions in New South Wales, the Australian Capital Territory and Victoria between 600–1200 m AHD are considered to be sub-Open link in same pagealpine area and may receive significant snowfalls, however unlike Open link in same pagealpine area the snow is unlikely to accumulate.

It is recommended that the Open link in same pageappropriate authority be consulted to determine whether the building is located in an Open link in same pagealpine area . AS/NZS 1170.3 also contains further detail in the identification of Open link in same pagealpine area and the altitude of the alpine regions of Australia.

In the Australian Capital Territory, Canberra is not designated as an Open link in same pagealpine area as snow loads are not considered significant.

Alteration , in relation to a building, includes an addition or extension to a building. Amenity means an attribute which contributes to the health, physical independence, comfort and well-being of people. Ancillary element means an element that is secondary to and not an integral part of another element to which it is attached. Annual greenhouse gas emissions means the theoretical amount of greenhouse gas emissions attributable to the energy used annually by a building's Open link in same pageservices, excluding kitchen exhaust and the like. Appropriate authority means the relevant authority with the statutory responsibility to determine the particular matter.
State and Territory variations

For Volume One see Open link in same page(NSW, Appropriate authority

For Volume Two see Open link in same page(NSW, Appropriate authority)

Appropriate Authority , for the purposes of Schedule 7, means the relevant authority with the statutory responsibility to determine the particular matter satisfies the relevant Open link in same pagePerformance Requirement.
Explanatory information:

The Open link in same pageAppropriate Authority is typically the building surveyor or building certifier charged with the statutory responsibility to determine building compliance and issue the building permit / approval and occupancy certificate / approval.

Appropriately qualified person means a person recognised by the Open link in same pageappropriate authority as having qualifications and/or experience in the relevant discipline in question. Approved disposal system means a system for the disposal of sewage, sullage or stormwater approved by an authority having jurisdiction. Articulated masonry means masonry construction in which special provisions have been made for movement by articulation. Assembly building means a building where people may assemble for—
  1. civic, theatrical, social, political or religious purposes including a library, theatre, public hall or place of worship; or
  2. educational purposes in a Open link in same pageschool, Open link in same pageearly childhood centre, preschool, or the like; or
  3. entertainment, recreational or sporting purposes including—
    1. a discotheque, nightclub or a bar area of a hotel or motel providing live entertainment or containing a dance floor; or
    2. a cinema; or
    3. a sports stadium, sporting or other club; or
  4. transit purposes including a bus station, railway station, airport or ferry terminal.
Assessment Method means a method that can be used for determining that a Open link in same pagePerformance Solution or Open link in same pageDeemed-to-Satisfy Solution complies with the Open link in same pagePerformance Requirements. Atrium means a space within a building that connects 2 or more Open link in same pagestoreys and—
  1. is enclosed at the top by a floor or roof (including a glazed roof structure); and
  2. includes any adjacent part of the building not separated by an appropriate barrier to fire; but
  3. does not include a stairwell, rampwell or the space within a Open link in same pageshaft; and
  4. for the purposes of (a) a space is considered enclosed if the area of the enclosing floor or roof is greater than 50% of the area of the space, measured in plan, of any of the Open link in same pagestoreys connected by the space.
Atrium well means a space in an Open link in same pageatrium bounded by the perimeter of the openings in the floors or by the perimeter of the floors and the Open link in same pageexternal walls. Automatic means designed to operate when activated by a heat, smoke or fire sensing device. Available safe egress time (ASET) means the time between ignition of a fire and the onset of untenable conditions in a specific part of a building. This is the calculated interval between the time of ignition of a fire and the time at which conditions become such that the occupant is unable to take effective action to escape to a place of safety. Average daylight factor means the ratio of the illumination level within a room provided by daylight to the level of daylight outside the building during overcast conditions. Average recurrence interval , applied to rainfall, means the expected or average interval between exceedances for a 5 minute duration rainfall intensity. Average specific extinction area means the Open link in same pageaverage specific extinction area for smoke as determined by AS 5637.1. Backflow prevention device means an air gap, break tank or mechanical device that is designed to prevent the unplanned reversal of flow of water or Open link in same pagecontaminants into the water service or a Open link in same pageNetwork Utility Operator's water supply. Backpressure means a reversal of water flow caused by the downstream pressure becoming greater than the supply pressure. Backsiphonage means a reversal of flow of water caused by negative pressure in the distributing pipes of a water service or supply. Backstage means a space associated with, and adjacent to, a Open link in same pagestage in a Class 9b building for scenery, props, equipment, dressing rooms, or the like. Battery system means one or more chemical cells connected in series, parallel or a combination of the two for the purpose of electrical energy storage. Blockage means an obstruction within a Open link in same pagedrainage system. Boiler means a vessel or an arrangement of vessels and interconnecting parts, wherein steam or other vapour is generated, or water or other liquid is heated at a pressure above that of the atmosphere, by the application of fire, the products of combustion, electrical power, or similar high temperature means, and—
  1. includes superheaters, reheaters, economisers, Open link in same pageboiler piping, supports, mountings, valves, gauges, fittings, controls, the Open link in same pageboiler settings and directly associated equipment; but
  2. excludes a fully flooded or pressurised system where water or other liquid is heated to a temperature lower than the normal atmospheric boiling temperature of the liquid.
Burnout means exposure to fire for a time that includes Open link in same pagefire growth, full development, and decay in the absence of intervention or automatic suppression, beyond which the fire is no longer a threat to building elements intended to perform Open link in same pageloadbearing or fire separation functions, or both. Breaking surf means any area of salt water in which waves break on an average of at least 4 days per week but does not include white caps or choppy water.
Explanatory information:

Open link in same page Breaking surf normally occurs in areas exposed to the open sea. Open link in same pageBreaking surf does not normally occur in sheltered areas, such as that which occurs around Port Phillip Bay, Sydney Harbour, Swan River, Derwent River and similar locations.

Carpark means a building that is used for the parking of motor vehicles but is neither a Open link in same pageprivate garage nor used for the servicing of vehicles, other than washing, cleaning or polishing. Cavity means a void between 2 leaves of masonry, or in masonry veneer construction, a void between a leaf of masonry and the supporting frame. Cavity wall , for the purposes of Open link in same pageFV1.1 in Volume One and Open link in same pageV2.2.1 in Volume Two, means a wall that incorporates a drained cavity. Certificate of Accreditation means a certificate issued by a State or Territory accreditation authority stating that the properties and performance of a building material or method of construction or design fulfil specific requirements of the BCA. Certificate of Conformity means a certificate issued under the ABCB scheme for products and systems certification stating that the properties and performance of a building material or method of construction or design fulfil specific requirements of the NCC. Certification body means a person or organisation operating in the field of material, product, form of construction or design certification that has been accredited by the Joint Accreditation System of Australia and New Zealand (JAZ-ANZ), and is accredited for a purpose other than as part of the CodeMark Australia Certification Scheme or Open link in same pageWaterMark Certification Scheme. Characteristic means the occupant data to be used in the modelling of access solutions which define how an occupant interacts with a building, i.e. occupant movement speeds, turning ability, reach capability, perception of luminance contrast and hearing threshold. Clad frame means timber or metal frame construction with exterior timber or sheet wall cladding that is not sensitive to minor movement and includes substructure masonry walls up to 1.5 m high. Climate zone means an area defined in Open link in same pageFigure 2 and in Open link in same pageTable 2 for specific locations, having energy efficiency provisions based on a range of similar climatic characteristics.
Figure 2 Climate zones for thermal design
Show Full Sized ImageFigure A1.1 — Climate zones for thermal design
Notes:
  • This map can be viewed in enlargeable form on the ABCB website at www.abcb.gov.au.
  • A Zone 4 area in South Australia, other than a council area, at an altitude greater than 300 m above the Australian Height Datum is to be considered as Zone 5.

    These areas have been defined in an enlarged format on the following maps produced by the Department of Planning, Transport and Infrastructure:

    Adelaide Hills Council Climate Zone Map

    Barossa Council Climate Zone Map

    Regional Council of Goyder Climate Zone Map

    These maps can be viewed on the Government of South Australia website at www.sa.gov.au.

  • Locations in Open link in same pageclimate zone 8 are in Open link in same pagealpine areas.
  • Table 2 Climate zones for thermal design—Various locations

    Location

    Open link in same page Climate zone

    Location

    Open link in same page Climate zone

    Location

    Open link in same page Climate zone

    Location

    Open link in same page Climate zone

    Australian Capital Territory

    Canberra

    7

    New South Wales

    Albury

    4

    Byron Bay

    2

    Lord Howe Island

    2

    Sydney West

    6

    Armidale

    7

    Cobar

    4

    Moree

    4

    Tamworth

    4

    Batemans Bay

    6

    Coffs Harbour

    2

    Newcastle

    5

    Thredbo

    8

    Bathurst

    7

    Dubbo

    4

    Nowra

    6

    Wagga Wagga

    4

    Bega

    6

    Goulburn

    7

    Orange

    7

    Williamtown

    5

    Bellingen Shire - Dorrigo Plateau

    7

    Grafton

    2

    Perisher Smiggins

    8

    Wollongong

    5

    Bellingen Shire - Valley & seaboard

    2

    Griffith

    4

    Port Macquarie

    5

    Yass

    6

    Bourke

    4

    Ivanhoe

    4

    Sydney East

    5

    Broken Hill

    4

    Lismore

    2

    Northern Territory

    Alice Springs

    3

    Elliot

    3

    Renner Springs

    3

    Darwin

    1

    Katherine

    1

    Tennant Creek

    3

    Queensland

    Birdsville

    3

    Gladstone

    2

    Mount Isa

    3

    Brisbane

    2

    Hervey Bay

    2

    Normanton

    1

    Townsville

    1

    Bundaberg

    2

    Hughenden

    3

    Rockhampton

    2

    Warwick

    5

    Cairns

    1

    Longreach

    3

    Roma

    3

    Weipa

    1

    Cooktown

    1

    Mackay

    2

    Southport

    2

    Cunnamulla

    3

    Toowoomba

    5

    South Australia

    Adelaide

    5

    Kingscote

    6

    Marree

    4

    Port Lincoln

    5

    Bordertown

    6

    Leigh Creek

    5

    Mount Gambier

    6

    Renmark

    5

    Ceduna

    5

    Lobethal

    6

    Murray Bridge

    6

    Tarcoola

    4

    Cook

    4

    Loxton

    5

    Oodnadatta

    4

    Victor Harbour

    6

    Elliston

    5

    Naracoorte

    6

    Port Augusta

    4

    Whyalla

    4

    Tasmania

    Burnie

    7

    Flinders Island

    7

    Launceston

    7

    Rossarden

    7

    Bicheno

    7

    Hobart

    7

    New Norfolk

    7

    Smithton

    7

    Deloraine

    7

    Huonville

    7

    Oatlands

    7

    St Marys

    7

    Devonport

    7

    King Island

    7

    Orford

    7

    Zeehan

    7

    Victoria

    Anglesea

    6

    Bright

    7

    Horsham

    6

    Swan Hill

    4

    Ararat

    7

    Colac

    6

    Melbourne

    6

    Traralgon

    6

    Bairnsdale

    6

    Dandenong

    6

    Mildura

    4

    Wangaratta

    7

    Ballarat

    7

    Echuca

    4

    Portland

    6

    Warrnambool

    6

    Benalla

    6

    Geelong

    6

    Sale

    6

    Wodonga

    6

    Bendigo

    6

    Hamilton

    7

    Shepparton

    4

    Western Australia

    Albany

    6

    Cocos Island

    1

    Kalgoorlie- Boulder

    4

    Port Hedland

    1

    Balladonia

    4

    Derby

    1

    Karratha

    1

    Wagin

    4

    Broome

    1

    Esperance

    5

    Meekatharra

    4

    Wyndham

    1

    Bunbury

    5

    Exmouth

    1

    Northam

    4

    Carnarvon

    3

    Geraldton

    5

    Pemberton

    6

    Christmas Island

    1

    Halls Creek

    3

    Perth

    5

    Combustible means—
    1. applied to a material — Open link in same pagecombustible as determined by AS 1530.1; and
    2. applied to construction or part of a building — constructed wholly or in part of Open link in same pagecombustible materials.
    Common wall , for the purposes of Volume One, means a wall that is common to adjoining buildings. Common wall , for the purposes of Volume Two, means a wall that is common to adjoining buildings other than Class 1 buildings. Condensation means the formation of moisture on the surface of a building element or material as a result of moist air coming into contact with a surface which is at a lower temperature. Conditioned space , for the purposes of Volume One, means a space within a building, including a ceiling or under-floor supply air plenum or return air plenum, where the environment is likely, by the intended use of the space, to have its temperature controlled by Open link in same pageair-conditioning. Conditioned space , for the purposes of Volume Two, means a space within a building that is heated or cooled by the building’s Open link in same pagedomestic services, excluding a non-Open link in same pagehabitable room in which a heater with a capacity of not more than 1.2 kW or 4.3 MJ/hour is installed. Containment protection means the installation of a Open link in same pagebackflow prevention device at the Open link in same pagepoint of connection of a Open link in same pageNetwork Utility Operator's water supply to a site. Contaminant means any substance (including gases, liquids, solids or micro-organisms), energy (excluding noise) or heat, that either by itself or in combination with the same, similar or other substances, energy or heat, changes or is likely to change the physical, chemical or biological condition of water. Construction activity actions means actions due to stacking of building materials or the use of equipment, including cranes and trucks, during construction or actions which may be induced by floor to floor propping. Controlled fill means material that has been placed and compacted in layers with compaction equipment (such as a vibrating plate) within a defined moisture range to a defined density requirement. Cooling load means the calculated amount of energy removed from the cooled spaces of the building annually by artificial means to maintain the desired temperatures in those spaces. Critical radiant flux (CRF) means the critical heat flux at extinguishment (CHF in kW/m2) as determined by AS ISO 9239.1. Cross-connection means any actual or potential connection between a water supply and any Open link in same pagecontaminant. Curtain wall means a non-Open link in same pageloadbearing Open link in same pageexternal wall that is not a Open link in same pagepanel wall. Damp-proof course (DPC) means a continuous layer of impervious material placed in a masonry wall or pier, or between a wall or pier and a floor, to prevent the upward or downward migration of water. Deemed-to-Satisfy Provisions means provisions which are deemed to satisfy the Open link in same pagePerformance Requirements. Deemed-to-Satisfy Solution means a method of satisfying the Open link in same pageDeemed-to-Satisfy Provisions. Defined flood event (DFE) means the flood event selected for the management of flood hazard for the location of specific development as determined by the Open link in same pageappropriate authority. Defined flood level (DFL) means the flood level associated with a Open link in same pagedefined flood event relative to a specified datum (see Open link in same pageFigure 3).
    Figure 3 Identification of defined flood level, flood hazard level and freeboard
    Show Full Sized ImageFigure 1.1.5 Identification of defined flood level, flood hazard level and freeboard
    Design fire means the quantitative description of a representation of a fire within the Open link in same pagedesign scenario. Design scenario means the specific scenario of which the sequence of events is quantified and a Open link in same pagefire safety engineering analysis is conducted against. Design wind speed means the design gust wind speed for the area where the building is located, calculated in accordance with AS/NZS 1170.2 or AS 4055 (see Open link in same pageTable 3 for wind classes).
    Table 3 Wind classes

    Non-cyclonic Region A and B

    Cyclonic Region C and D

    N1, N2, N3

    C1

    N4, N5, N6 (these wind classes are covered by Volume Two Open link in same pagePart 3.0, Structural provisions).

    C2, C3, C4 (these wind classes are covered by Volume Two Open link in same pagePart 3.0, Structural provisions).

    Notes:
    1. Wind classification map identifying wind regions is contained in Volume Two Open link in same pagePart 3.0 (see Open link in same pageFigure 3.0.1).
    2. Information on wind classes for particular areas may be available from the Open link in same pageappropriate authority.
    3. “N” = non-cyclonic winds and “C” = cyclonic winds.
    Designated bushfire prone area means land which has been designated under a power of legislation as being subject, or likely to be subject, to bushfires. Detention centre means a building in which persons are securely detained by means of the built structure including a prison, remand centre, juvenile Open link in same pagedetention centre, holding cells or psychiatric Open link in same pagedetention centre. Direct fix cladding wall , for the purposes of Open link in same pageFV1.1 in Volume One and Open link in same pageV2.2.1 in Volume Two, means a wall with cladding attached directly to the wall framing without the use of a drained cavity. Discontinuous construction means the following:
    1. A wall having a minimum 20 mm cavity between 2 separate leaves, and—
      1. for masonry, where wall ties are used to connect leaves, the ties are of the resilient type; and
      2. for other than masonry, there is no mechanical linkage between the leaves, except at the periphery.
    2. A staggered stud wall is not deemed to be Open link in same pagediscontinuous construction.
    Display glazing means Open link in same pageglazing used to display retail goods in a shop or showroom directly adjacent to a walkway or footpath, but not including that used in a café or restaurant. Domestic services means the basic engineering systems that use energy or control the use of energy; and—
    1. includes—
      1. heating, air-conditioning, mechanical ventilation and artificial lighting; and
      2. pumps and heaters for Open link in same pageswimming pools and spa pools; and
      3. heated water systems; but
    2. excludes cooking facilities and portable appliances.
    Drainage means any sanitary Open link in same pagedrainage, liquid trade waste Open link in same pagedrainage or stormwater Open link in same pagedrainage system. Drinking water means water intended primarily for human consumption but which has other domestic uses.
    Explanatory Information:

    See also the Australian Drinking Water Guidelines produced by the National Health and Medical Research Council.

    Early childhood centre means any premises or part thereof providing or intending to provide a centre-based education and care service within the meaning of the Education and Care Services National Law Act 2010 (Vic), the Education and Care Services National Regulations and centre-based services that are licensed or approved under State and Territory children's services law, but excludes education and care primarily provided to school aged children in outside school hours settings. Effective height means the vertical distance between the floor of the lowest Open link in same pagestorey included in the calculation of Open link in same pagerise in storeys and the floor of the topmost Open link in same pagestorey (excluding the topmost Open link in same pagestorey if it contains only heating, ventilating, lift or other equipment, water tanks or similar service units). Electric passenger lift means a power-operated lift for raising or lowering people in a car in which the motion of the car is obtained from an electric motor mechanically coupled to the hoisting mechanism. Electricity network substation means a building in which high voltage supply is converted or transformed and which is controlled by a licensed network service provider designated under a power of legislation. Electrohydraulic passenger lift means a power-operated lift for raising or lowering people in a car in which the motion of the car is obtained from the action of liquid under pressure acting on a piston or ram, the pressure being generated by a pump driven by an individual electric motor. Envelope , for the purposes of Open link in same pageSection J in Volume One, means the parts of a building’s Open link in same pagefabric that separate a Open link in same pageconditioned space or Open link in same pagehabitable room from—
    1. the exterior of the building; or
    2. a non-Open link in same pageconditioned space including—
      1. the floor of a rooftop plant room, lift-machine room or the like; and
      2. the floor above a Open link in same pagecarpark or warehouse; and
      3. the Open link in same pagecommon wall with a Open link in same pagecarpark, warehouse or the like.
    Envelope , for the purposes of Open link in same pagePart 2.6 and Open link in same pagePart 3.12 in Volume Two, means the parts of a building’s Open link in same pagefabric that separate artificially heated or cooled spaces from—
    1. the exterior of the building; or
    2. other spaces that are not artificially heated or cooled.
    Equivalent means equivalent to the level of health, safety and amenity provided by the Open link in same pageDeemed-to-Satisfy Provisions. Evacuation route means the continuous path of travel (including Open link in same pageexits, Open link in same pagepublic corridors and the like) from any part of a building, including within a Open link in same pagesole-occupancy unit in a Class 2 or 3 building or Class 4 part, to a Open link in same pagesafe place. Evacuation time means the time calculated from when the emergency starts for the occupants of the building to evacuate to a Open link in same pagesafe place. Exit means—
    1. any, or any combination of the following if they provide egress to a road or Open link in same pageopen space:
      1. An internal or external stairway.
      2. A ramp.
      3. A Open link in same pagefire-isolated passageway.
      4. A doorway opening to a road or Open link in same pageopen space.
    2. A Open link in same pagehorizontal exit or a Open link in same pagefire-isolated passageway leading to a Open link in same pagehorizontal exit.
    Expert Judgement means the judgement of an expert who has the qualifications and experience to determine whether a Open link in same pagePerformance Solution or Open link in same pageDeemed-to-Satisfy Solution complies with the Open link in same pagePerformance Requirements.
    Explanatory Information:

    Contemporary and relevant qualifications and/or experience are necessary to determine whether a Open link in same pagePerformance Solution complies with the Open link in same pagePerformance Requirements. The level of qualification and/or experience may differ depending on the complexity of the proposal and the requirements of the regulatory authority. Practitioners should seek advice from the authority having jurisdiction or Open link in same pageappropriate authority for clarification as to what will be accepted.

    State and Territory variations

    For Volume Three see Open link in same page(Tas, Expert Judgement)

    External wall , for the purposes of Volume One, means an outer wall of a building which is not a Open link in same pagecommon wall. External wall , for the purposes of Volume Two, means an outer wall of a building which is not a Open link in same pageseparating wall. Extra-low voltage means a Open link in same pagevoltage not exceeding 50 V AC or 120 V ripple-free DC. Fabric means the basic building structural elements and components of a building including the roof, ceilings, walls, glazing and floors. Farming means—
    1. cultivating, propagating and harvesting plants or fungi or their products or parts, including seeds, spores, bulbs or the like, but does not include forestry; or
    2. maintaining animals in any physical environment for the purposes of—
      1. breeding them; or
      2. selling them; or
      3. acquiring and selling their bodily produce such as milk, wool, eggs or the like; or
    3. a combination of Open link in same page(a), and Open link in same page(b),

      but does not include forestry or maintaining animals for sport or recreational purposes.

    State and Territory variation

    For Volume One see (SA, Farming)

    Farm building means a Class 7 or 8 building located on land primarily used for Open link in same pagefarming
    1. that is—
      1. used in connection with Open link in same pagefarming; or
      2. used primarily to store one or more Open link in same pagefarm vehicles; or
      3. a combination of Open link in same page(i) and Open link in same page(ii); and
        1. in which the total number of persons accommodated at any time does not exceed one person per 200 m² of Open link in same pagefloor area or part thereof, up to a maximum of 8 persons; and
        2. with a total Open link in same pagefloor area of not more than 3500 m².
    State and Territory variation

    For Volume One see Open link in same page(SA, Farm building)

    Farm shed means a single Open link in same pagestorey Class 7 or 8 building located on land primarily used for Open link in same pagefarming
    1. that is—
      1. used in connection with Open link in same pagefarming; or
      2. used primarily to store one or more Open link in same pagefarm vehicles; or
      3. a combination of Open link in same page(i) and Open link in same page(ii); and
        1. occupied neither frequently nor for extended periods by people; and
        2. in which the total number of persons accommodated at any time does not exceed 2; and
        3. with a total Open link in same pagefloor area of more than 500 m² but not more than 2000 m².
    State and Territory variation

    For Volume One see (SA, Farm shed)

    Farm vehicle means a vehicle used in connection with Open link in same pagefarming.
    State and Territory variation

    For Volume One see (SA, Farm vehicle)

    Finished ground level , for the purposes of Open link in same pagePart 3.2 in Volume Two, means the ground level adjacent to footing systems at the completion of construction and landscaping. Fire brigade means a statutory authority constituted under an Act of Parliament having as one of its functions, the protection of life and property from fire and other emergencies. Fire brigade station for the purposes of Open link in same pageE1.3(a)(ii) and Open link in same pageH3.9 in Volume One, means a state or territory government operated premises which is a station for a Open link in same pagefire brigade. Fire compartment means—
    1. the total space of a building; or
    2. when referred to in—
      1. the Open link in same pagePerformance Requirements — any part of a building separated from the remainder by barriers to fire such as walls and/or floors having an appropriate resistance to the spread of fire with any openings adequately protected; or
      2. the Open link in same pageDeemed-to-Satisfy Provisions — any part of a building separated from the remainder by walls and/or floors each having an FRL not less than that Open link in same pagerequired for a Open link in same pagefire wall for that type of construction and where all openings in the separating construction are protected in accordance with the Open link in same pageDeemed-to-Satisfy Provisions of the relevant Part.
    Fire growth means the stage of fire development during which the Open link in same pageheat release rate and the temperature of the fire are generally increasing. Fire hazard means the danger in terms of potential harm and degree of exposure arising from the start and spread of fire and the smoke and gases that are thereby generated. Fire hazard properties means the following properties of a material or assembly that indicate how they behave under specific fire test conditions:
    1. Open link in same pageAverage specific extinction area, Open link in same pagecritical radiant flux and Open link in same pageFlammability Index, determined as defined in Open link in same pageSchedule 3.
    2. Open link in same pageSmoke-Developed Index, Open link in same pagesmoke development rate and Open link in same pageSpread-of-Flame Index, determined in accordance with Open link in same pageSchedule 6.
    3. Open link in same pageGroup number and Open link in same pagesmoke growth rate index (SMOGRARC), determined in accordance with Open link in same pageSpecfication C1.10 of Volume One.
    Fire intensity means the rate of release of calorific energy in watts, determined either theoretically or empirically, as applicable. Fire-isolated passageway means a corridor, hallway or the like, of Open link in same pagefire-resisting construction, which provides egress to or from a Open link in same pagefire-isolated stairway or Open link in same pagefire-isolated ramp or to a road or Open link in same pageopen space. Fire-isolated ramp means a ramp within a Open link in same pagefire-resisting enclosure which provides egress from a Open link in same pagestorey. Fire-isolated stairway means a stairway within a Open link in same pagefire-resisting Open link in same pageshaft and includes the floor and roof or top enclosing structure. Fire load means the sum of the net calorific values of the Open link in same pagecombustible contents which can reasonably be expected to burn within a Open link in same pagefire compartment, including furnishings, built-in and removable materials, and building elements. The calorific values must be determined at the ambient moisture content or humidity. (The unit of measurement is MJ.) Fire-protected timber means Open link in same pagefire-resisting timber building elements that comply with Volume One Open link in same pageSpecification C1.13a. Fire-protective covering means—
    1. 13 mm fire-protective grade plasterboard; or
    2. 12 mm cellulose cement flat sheeting complying with AS/NZS 2908.2 or ISO 8336; or
    3. 12 mm fibrous plaster reinforced with 13 mm x 13 mm x 0.7 mm galvanised steel wire mesh located not more than 6 mm from the exposed face; or
    4. other material not less fire-protective than 13 mm fire-protective grade plasterboard, fixed in accordance with the normal trade practice for a Open link in same pagefire-protective covering.
    Fire-resistance level (FRL) means the grading periods in minutes determined in accordance with Open link in same pageSchedule 5, for the following criteria—
    1. Open link in same pagestructural adequacy; and
    2. Open link in same pageintegrity; and
    3. Open link in same pageinsulation,

      and expressed in that order.

      Note

      A dash means that there is no requirement for that criterion. For example, 90/–/– means there is no requirement for an FRL for Open link in same pageintegrity and Open link in same pageinsulation, and –/–/– means there is no requirement for an FRL.

    Fire-resisting , for the purposes of Volume One, applied to a building element, means having an FRL appropriate for that element. Fire-resisting , for the purposes of Volume Two, applied to a Open link in same pagestructural member or other part of a building, means having the FRL Open link in same pagerequired for that Open link in same pagestructural member or other part. Fire-resisting construction , for the purposes of Volume One, means one of the Types of construction referred to in Open link in same pagePart C1 of Volume One. Fire safety engineering means application of engineering principles, rules and Open link in same pageexpert judgement based on a scientific appreciation of the fire phenomenon, often using specific Open link in same pagedesign scenarios, of the effects of fire and of the reaction and behaviour of people in order to—
    1. save life, protect property and preserve the environment and heritage from destructive fire; and
    2. quantify the hazards and risk of fire and its effects; and
    3. mitigate fire damage by proper design, construction, arrangement and use of buildings, materials, structures, industrial processes and transportation systems; and
    4. evaluate analytically the optimum protective and preventive measures, including design, installation and maintenance of active and passive fire and life safety systems, necessary to limit, within prescribed levels, the consequences of fire.
    Fire safety system means one or any combination of the methods used in a building to
    1. warn people of an emergency; or
    2. provide for safe evacuation; or
    3. restrict the spread of fire; or
    4. extinguish a fire,

      and includes both active and passive systems.

    Fire-source feature means—
    1. the far boundary of a road, river, lake or the like adjoining the allotment; or
    2. a side or rear boundary of the allotment; or
    3. an Open link in same pageexternal wall of another building on the allotment which is not a Class 10 building.
    Fire wall means a wall with an appropriate resistance to the spread of fire that divides a Open link in same pagestorey or building into Open link in same pagefire compartments. Fixed wired , for the purposes of Open link in same pageSpecification E2.2d in Volume One, means a system of electrical wiring (either AC or DC), in which cables are fixed or supported in position. Flammability Index means the index number as determined by AS 1530.2. Flashing means a strip or sleeve of impervious material dressed, fitted or built-in to provide a barrier to moisture movement, or to divert the travel of moisture, or to cover a joint where water would otherwise penetrate to the interior of a building. Flashover , in relation to Open link in same pagefire hazard properties, means a Open link in same pageheat release rate of 1 MW. Flight , means that part of a stair that has a continuous series of Open link in same pagerisers, including Open link in same pagerisers of Open link in same pagewinders, not interrupted by a Open link in same pagelanding or floor (for Volume Two, see Open link in same pageFigure 4).
    Explanatory information for Volume Two:

    A Open link in same pageflight is the part of a stair that has a continuous slope created by the nosing line of treads. The length of a Open link in same pageflight is limited to restrict the distance a person could fall down a stair. Quarter Open link in same pagelandings, as shown in Open link in same pageFigure 4, are considered sufficient to halt a person’s fall and therefore are considered for the purposes of Volume Two not to be part of the Open link in same pageflight.

    Figure 4 Identification of stair flights - Plan view
    Show Full Sized ImageFigure 4 Identification of stair flights - Plan view
    Flood hazard area means the Open link in same pagesite (whether or not mapped) encompassing land lower than the Open link in same pageflood hazard level which has been determined by the Open link in same pageappropriate authority.
    State and Territory variations

    For Volume One see Open link in same page(Vic, Flood hazard area)

    For Volume Two see Open link in same page(Vic, Flood hazard area)

    Flood hazard level (FHL) means the flood level used to determine the height of floors in a building and represents the Open link in same pagedefined flood level plus the Open link in same pagefreeboard (see Open link in same pageFigure 3). Floor area , for the purposes of Volume One, means—
    1. in relation to a building — the total area of all Open link in same pagestoreys; and
    2. in relation to a Open link in same pagestorey — the area of all floors of that Open link in same pagestorey measured over the enclosing walls, and includes—
      1. the area of a mezzanine within the Open link in same pagestorey, measured within the finished surfaces of any Open link in same pageexternal walls; and
      2. the area occupied by any Open link in same pageinternal wall or partitions, any cupboard, or other built-in furniture, fixture or fitting; and
      3. if there is no enclosing wall, an area which has a use that—
        1. contributes to the Open link in same pagefire load; or
        2. impacts on the safety, health or amenity of the occupants in relation to the provisions of the BCA; and
    3. in relation to a room — the area of the room measured within the finished surfaces of the walls, and includes the area occupied by any cupboard or other built-in furniture, fixture or fitting; and
    4. in relation to a Open link in same pagefire compartment — the total area of all floors within the Open link in same pagefire compartment measured within the finished surfaces of the bounding construction, and if there is no bounding construction, includes an area which has a use which contributes to the Open link in same pagefire load; and
    5. in relation to an Open link in same pageatrium — the total area of all floors within the Open link in same pageatrium measured within the finished surfaces of the bounding construction and if no bounding construction, within the Open link in same pageexternal walls.
    Floor area , for the purposes of Volume Two, means in relation to a room, the area of the room measured within the finished surfaces of the walls, and includes the area occupied by any cupboard or other built-in furniture, fixture or fitting (see Open link in same pageFigure 5).
    Figure 5 Identification of floor area of a room
    Show Full Sized ImageFigure 1.1.1 Identification of floor area of a room
    Foundation means the ground which supports the building (see Open link in same pageFigure 6).
    Figure 6 Identification of foundation
    Show Full Sized ImageFigure 1.1.2 Identification of foundation
    Fractional effective dose (FED) means the fraction of the dose (of thermal effects) that would render a person of average susceptibility incapable of escape.
    Explanatory information:

    The definition for Open link in same pageFED has been modified from the ISO definition to be made specific for Schedule 7.  The use of CO or CO2 as part of Open link in same pageFED is not part of that Open link in same pageVerification Method. This is because the ability to measure CO in a repeatable test varies by two orders of magnitude for common cellosic fuel.

    Freeboard means the height above the Open link in same pagedefined flood level as determined by the Open link in same pageappropriate authority, used to compensate for effects such as wave action and localised hydraulic behaviour.
    State and Territory variations

    For Volume One see Open link in same page(Vic, Freeboard)

    For Volume Two see Open link in same page(Vic, Freeboard)

    Fully developed fire means the state of total involvement of the majority of available combustible materials in a fire. Glazing , for the purposes of Open link in same pageSection J in Volume One, means a transparent or translucent element and its supporting frame located in the Open link in same pageenvelope, and includes a Open link in same pagewindow other than a Open link in same pageroof light. Glazing , for the purposes of Open link in same pagePart 2.6 and Open link in same pagePart 3.12 in Volume Two, means a transparent or translucent element and its supporting frame located in the external Open link in same pagefabric of the building, and includes a Open link in same pagewindow other than a Open link in same pageroof light. Green Star means the building sustainability rating scheme managed by the Green Building Council of Australia. Going means the horizontal dimension from the front to the back of a tread less any overhang from the next tread or Open link in same pagelanding above (see Open link in same pageFigure 3.9.1.4). Group number means the number of one of 4 groups of materials used in the regulation of Open link in same pagefire hazard properties and applied to materials used as a finish, surface, lining, or attachment to a wall or ceiling. Habitable room means a room used for normal domestic activities, and—
    1. includes a bedroom, living room, lounge room, music room, television room, kitchen, dining room, sewing room, study, playroom, family room, home theatre and sunroom; but
    2. excludes a bathroom, laundry, water closet, pantry, walk-in wardrobe, corridor, hallway, lobby, photographic darkroom, clothes-drying room, and other spaces of a specialised nature occupied neither frequently nor for extended periods.
    Hazard Rating means a rating of either Open link in same pageLow Hazard, Open link in same pageMedium Hazard or Open link in same pageHigh Hazard determined in accordance with Specification B5.1 in Volume Three, for any Open link in same pageDeemed-to-Satisfy Solution. Health-care building means a building whose occupants or patients undergoing medical treatment generally need physical assistance to evacuate the building during an emergency and includes—
    1. a public or private hospital; or
    2. a nursing home or similar facility for sick or disabled persons needing full-time care; or
    3. a clinic, day surgery or procedure unit where the effects of the predominant treatment administered involve patients becoming non-ambulatory and requiring supervised medical care on the premises for some time after the treatment.
    Heated water means water that has been intentionally heated. It is normally referred to as hot water or warm water. Heating load means the calculated amount of energy delivered to the heated spaces of the building annually by artificial means to maintain the desired temperatures in those spaces. Heat release means the thermal energy produced by combustion (kJ). Heat release rate (HRR) means the rate of thermal energy production generated by combustion (kW (preferred) or MW). High Hazard means any condition, device or practice which, in connection with a water supply, has the potential to cause death. High wind area means a region that is subject to Open link in same pagedesign wind speed more than N3 or C1 (see Open link in same pageTable 3). Horizontal exit means a Open link in same pagerequired doorway between 2 parts of a building separated from each other by a Open link in same pagefire wall. Hours of operation means the number of hours when the occupancy of the building is greater than 20% of the peak occupancy. House energy rating software , for the purposes of Volume One, means software accredited under the Nationwide House Energy Rating Scheme. House energy rating software , for the purposes of Volume Two—
    1. applied to Open link in same pageV2.6.2.2—means software accredited or previously accredited under the Nationwide House Energy Rating Scheme and the additional functionality provided in non-regulatory mode; and
    2. applied to Open link in same page3.12.0.1—means software accredited under the Nationwide House Energy Rating Scheme.
    Explanatory information:

    The Nationwide House Energy Rating Scheme (NatHERS) refers to the Australian governments' scheme that facilitates consistent energy ratings from software tools which are used to assess the potential thermal efficiency of dwelling envelopes.

    Housing Provisions means the requirements for Class 1 and 10 buildings contained in Volume Two of the National Construction Code as published by the Australian Building Codes Board. Illuminance means the luminous flux falling onto a unit area of surface. Illumination power density (W/m 2 ) means the total of the power that will be consumed by the lights in a space, including any lamps, ballasts, current regulators and control devices other than those that are plugged into socket outlets for intermittent use such as floor standing lamps, desk lamps or work station lamps, divided by the area of the space.
    Explanatory information:
    • Open link in same page Illumination power density relates to the power consumed by the lighting system and includes the light source or luminaire and any control device. The power for the lighting system is the illumination power load. This approach is more complicated than the Open link in same pagelamp power density approach but provides more flexibility for a dwelling with sophisticated control systems.
    • The area of the space refers to the area the lights serve. This could be considered a single room, open plan space, verandah, balcony or the like, or the total area of all these spaces.
    Inclined lift means a power-operated device for raising or lowering people within a carriage that has one or more rigid guides on an inclined plane. Individual protection means the installation of a Open link in same pagebackflow prevention device at the point where a water service connects to a single fixture or appliance. Insulation , in relation to an FRL, means the ability to maintain a temperature on the surface not exposed to the furnace below the limits specified in AS 1530.4. Integrity , in relation to an FRL, means the ability to resist the passage of flames and hot gases specified in AS 1530.4. Internal wall , for the purposes of Volume One, excludes a Open link in same pagecommon wall or a party wall. Internal wall , for the purposes of Volume Two, excludes a Open link in same pageseparating wall, Open link in same pagecommon wall or party wall. Interstitial condensation means the Open link in same pagecondensation of moisture on surfaces between material layers inside the building component. JAS-ANZ means the Joint Accreditation System of Australia and New Zealand. Lamp power density (W/m 2 ) means the total of the maximum power rating of the lamps in a space, other than those that are plugged into socket outlets for intermittent use such as floor standing lamps, desk lamps or work station lamps, divided by the area of the space.
    Explanatory information:
    • Open link in same page Lamp power density is a simple means of setting energy consumption at an efficient level for Class 1 and associated Class 10a buildings.
    • Lamp refers to the globe or globes that are to be installed in a permanently wired light fitting. The maximum power of a lamp is usually marked on the fitting as the maximum allowable wattage.
    • The area of the space refers to the area the lights serve. This could be considered a single room, open plan space, verandah, balcony or the like, or the total area of all these spaces.
    Landing means an area at the top or bottom of a Open link in same pageflight or between two Open link in same pageflights. Latent heat gain means the heat gained by the vapourising of liquid without change of temperature. Lightweight construction means construction which incorporates or comprises—
    1. sheet or board material, plaster, render, sprayed application, or other material similarly susceptible to damage by impact, pressure or abrasion; or
    2. concrete and concrete products containing pumice, perlite, vermiculite, or other soft material similarly susceptible to damage by impact, pressure or abrasion; or
    3. masonry having a width of less than 70 mm.
    Loadbearing means intended to resist vertical forces additional to those due to its own weight. Loadbearing wall , for the purposes of Open link in same pagePart 3.2 in Volume Two, means any wall imposing on the footing a load greater than 10 kN/m. Loss means either: physical damage, financial loss or loss of Open link in same pageamenity. Low Hazard means any condition, device of practice which, in connection with a water supply, would constitute a nuisance by colour, odour or taste but does not have the potential to injure or endanger health. Low rainfall intensity area means an area with a 5 minute rainfall intensity for an Open link in same pageaverage recurrence interval of 20 years of not more than 125 mm/hour.
    Explanatory information:

    Rainfall intensity figures can be obtained from Open link in same pageTables 3.5.3.1a to 3.5.3.1h in Volume Two

    Low-rise, low-speed constant pressure lift means a power-operated low-rise, low-speed device for raising or lowering people with limited mobility on a carriage that is controlled by the application of constant pressure to a control. Low-rise platform lift means a power-operated device for raising or lowering people with limited mobility on a platform, that is controlled automatically or by the application of constant pressure to a control. Low voltage means a Open link in same pagevoltage exceeding Open link in same pageextra-low voltage, but not exceeding 1000 V AC or 1500 V DC. Luminance contrast means the light reflected from one surface or component, compared to the light reflected from another surface or component. Massive timber means an element not less than 75 mm thick as measured in each direction formed from solid and laminated timber. Medium Hazard means any condition, device or practice which, in connection with a water supply, has the potential to injure or endanger health. Minimum Energy Performance Standards (MEPS) means the Minimum Energy Performance Standards for equipment and appliances established through the Greenhouse and Energy Minimum Standards Act 2012. Mixed construction means a building consisting of more than one form of construction, particularly in double-storey buildings. Mezzanine means an intermediate floor within a room. Mould means a fungal growth that can be produced from conditions such as dampness, darkness, or poor ventilation. NABERS Energy for Offices means the National Australia Built Environment Rating Systems for office energy efficiency, which is managed by the New South Wales Government. Network Utility Operator means a person who—
    1. undertakes the piped distribution of Open link in same pagedrinking water or Open link in same pagenon-drinking water for supply; or
    2. is the operator of a sewerage system or a stormwater Open link in same pagedrainage system.
      Explanatory information:

      A Open link in same pageNetwork Utility Operator in most States and Territories is the water and sewerage authority licensed to supply water and receive sewage and/or stormwater. The authority operates or proposes to operate a network that undertakes the distribution of water for supply and undertakes to receive sewage and/or stormwater drainage. This authority may be a licensed utility, local government body or council.

    State and Territory variation

    For Volume Three see Open link in same page(Tas, Network Utility Operator)

    Non-combustible means—
    1. applied to a material — not deemed Open link in same pagecombustible as determined by AS 1530.1 — Combustibility Tests for Materials; and
    2. applied to construction or part of a building — constructed wholly of materials that are not deemed Open link in same pagecombustible.
    Non-drinking water means water which is not Open link in same pagedrinking water. Occupant traits , for the purposes of Volume One, means the features, needs and profile of the occupants in a Open link in same pagehabitable room or space. Occupant traits , for the purposes of Volume Two, means the features, needs and profile of the occupants in a room or space.
    Explanatory information:

    This term is used to describe the characteristics of the occupants and their associated requirements in relation to a room or space.

    For example, in relation to a bedroom, the following occupant characteristics and associated requirements should be considered:

    • Characteristics: height, mobility and how often the space will be used.
    • Requirements: a sleeping space and a space to undertake leisure activities.
    Occupiable outdoor area means a space on a roof, balcony or similar part of a building—
    1. that is open to the sky; and
    2. to which access is provided, other than access only for maintenance; and
    3. that is not Open link in same pageopen space or directly connected with Open link in same pageopen space.
    On-site wastewater management system means a system installed on premises that receives and/or treats wastewater generated on the premises and applies the resulting effluent to an Open link in same pageapproved disposal system or re-use system.
    State and Territory variation

    For Volume Three see Open link in same page(Tas, On-site wastewater management system)

    Open-deck carpark means a carpark in which all parts of the parking Open link in same pagestoreys are cross-ventilated by permanent unobstructed openings in not fewer than 2 opposite or approximately opposite sides, and—
    1. each side that provides ventilation is not less than 1/6 of the area of any other side; and
    2. the openings are not less than ½ of the wall area of the side concerned.
    Open space means a space on the allotment, or a roof or similar part of a building adequately protected from fire, open to the sky and connected directly with a public road. Open spectator stand means a tiered stand substantially open at the front. Other property means all or any of the following—
    1. any building on the same or an adjoining allotment; and
    2. any adjoining allotment; and
    3. a road.
    Outdoor air means air outside the building. Outdoor air economy cycle is a mode of operation of an Open link in same pageair-conditioning system that, when the Open link in same pageoutdoor air thermodynamic properties are favourable, increases the quantity of Open link in same pageoutdoor air used to condition the space. Outfall means that part of the disposal system receiving Open link in same pagesurface water from the drainage system and may include a natural water course, kerb and channel, or soakage system. Overflow devices means a device that provides relief to a water service, sanitary Open link in same pageplumbing and Open link in same pagedrainage system, Open link in same pagerainwater harvesting system or stormwater system to avoid the likelihood of Open link in same pageuncontrolled discharge. Panel wall means a non-Open link in same pageloadbearing Open link in same pageexternal wall, in frame or similar construction, that is wholly supported at each Open link in same pagestorey. Patient care area means a part of a Open link in same pagehealth-care building normally used for the treatment, care, accommodation, recreation, dining and holding of patients including a Open link in same pageward area and Open link in same pagetreatment area. Performance-based design brief (PBDB) , for the purposes of Schedule 7, means the process and the associated report that defines the scope of work for the performance-based Open link in same pagefire safety engineering analysis and the technical basis for analysis as agreed by stakeholders. Performance Requirement means a requirement which states the level of performance which a Open link in same pagePerformance Solution or Open link in same pageDeemed-to-Satisfy Solution must meet. Performance Solution means a method of complying with the Open link in same pagePerformance Requirements other than by a Open link in same pageDeemed-to-Satisfy Solution. Perimeter of building , for the purposes of Open link in same pagePart 3.6 in Volume Two, means the external envelope of a building. Personal care services means any of the following:
    1. The provision of nursing care.
    2. Assistance or supervision in—
      1. bathing, showering or personal hygiene; or
      2. toileting or continence management; or
      3. dressing or undressing; or
      4. consuming food.
    3. The provision of direct physical assistance to a person with mobility problems.
    4. The management of medication.
    5. The provision of substantial rehabilitative or development assistance.
    Piping , for the purposes of Open link in same pageSection J in Volume One or Open link in same pagePart 3.12 in Volume Two, means an assembly of pipes, with or without valves or other fittings, connected together for the conveyance of liquids and gases. Pliable building membrane means a water barrier as classified by AS/NZS 4200.1. Plumbing means any water Open link in same pageplumbing, roof Open link in same pageplumbing, sanitary Open link in same pageplumbing system or heating, ventilation and air-conditioning Open link in same pageplumbing. Plumbing or Drainage Solution means a solution which complies with the Open link in same pagePerformance Requirements and is a—
    1. Open link in same pagePerformance Solution; or
    2. Open link in same pageDeemed-to-Satisfy Solution; or
    3. combination of Open link in same page(a) and Open link in same page(b).
    Point of connection
    1. for a Open link in same pageheated water service means the point where the water heater connects to the cold water service downstream of the isolation valve; and
    2. for sewage disposal means the point where the on-site Open link in same pagedrainage system connects to the Open link in same pageNetwork Utility Operator's sewerage system or to an Open link in same pageon-site wastewater management system; and
    3. for stormwater disposal means the point where the on-site Open link in same pagedrainage system connects to the Open link in same pageNetwork Utility Operator's stormwater system or to an Open link in same pageapproved disposal system; and
    4. for a water service means the point where the service pipe within the premises connects to the Open link in same pageNetwork Utility Operator's property service or to an alternative water supply system.
    Predicted Mean Vote (PMV) means the Predicted Mean Vote of the thermal perception of building occupants determined in accordance with ANSI/ASHRAE Standard 55. Pressure vessel means a vessel subject to internal or external pressure. It includes interconnected parts and components, valves, gauges and other fittings up to the first point of connection to connecting piping, and—
    1. includes fire heaters and gas cylinders; but
    2. excludes—
      1. any vessel that falls within the definition of a Open link in same pageboiler; and
      2. storage tanks and equipment tanks intended for storing liquids where the pressure at the top of the tank is not exceeding 1.4 kPa above or 0.06 kPa below atmospheric pressure; and
      3. domestic-type hot water supply heaters and tanks; and
      4. pressure vessels installed for the purposes of fire suppression or which serve a fire suppression system.
    Primary building element , for the purposes of Volume One, means a member of a building designed specifically to take part of the loads specified in Open link in same pageB1.2 and includes roof, ceiling, floor, stairway or ramp and wall framing members including bracing members designed for the specific purpose of acting as a brace to those members. Primary building element , for the purposes of Open link in same pagePart 3.1.4 in Volume Two, means a member of a building designed specifically to take part of the building loads and includes roof, ceiling, floor, stairway or ramp and wall framing members including bracing members designed for the specific purpose of acting as a brace to those members.
    Explanatory information:

    The loads to which a building may be subjected are dead, live, wind, snow and earthquake loads. Further information on building loads can be found in the AS 1170 series of Standards.

    State and Territory variation

    For Volume Two see Open link in same page(Qld, Primary building element)

    Private bushfire shelter means a structure associated with, but not attached to, or part of a Class 1a dwelling that may, as a last resort, provide shelter for occupants from immediate life threatening effects of a bushfire. Private garage , for the purposes of Volume One, means—
    1. any garage associated with a Class 1 building; or
    2. any single Open link in same pagestorey of a building of another Class containing not more than 3 vehicle spaces, if there is only one such Open link in same pagestorey in the building; or
    3. any separate single Open link in same pagestorey garage associated with another building where such garage contains not more than 3 vehicle spaces.
    Private garage , for the purposes of Volume Two, means—
    1. any garage associated with a Class 1 building; or
    2. any separate single Open link in same pagestorey garage associated with another building where such garage contains not more than 3 vehicle spaces.
    Product means Open link in same pageplumbing and Open link in same pagedrainage items within the scope of the PCA including but not limited to:
    1. Materials, fixtures and components used in a Open link in same pageplumbing or Open link in same pagedrainage installation.
    2. Appliances and equipment connected to a Open link in same pageplumbing or Open link in same pagedrainage system.
    Product Technical Statement means a form of documentary evidence stating that the properties and performance of a building material, product or form of construction fulfil specific requirements of the NCC, and describes—
    1. the application and intended use of the building material, product or form of construction: and
    2. how the use of the building material, product or form of construction complies with the requirements of the NCC Volume One and Volume Two; and
    3. any limitations and conditions of the use of the building material, product or form of construction relevant to Open link in same page(b).
    Professional engineer means a person who is—
    1. if legislation is applicable — a registered Open link in same pageprofessional engineer in the relevant discipline who has appropriate experience and competence in the relevant field; or
    2. if legislation is not applicable—
      1. registered in the relevant discipline on the National Engineering Register (NER) of the Institution of Engineers Australia (which trades as 'Engineers Australia'); or
      2. eligible to become registered on the Institution of Engineers Australia's NER and has appropriate experience and competence in the relevant field.
    State and Territory Variations

    For Volume Three see Open link in same page(Tas, Professional engineer)

    Public corridor means an enclosed corridor, hallway or the like which—
    1. serves as a means of egress from 2 or more Open link in same pagesole-occupancy units to a Open link in same pagerequiredOpen link in same pageexit from the Open link in same pagestorey concerned; or
    2. is Open link in same pagerequired to be provided as a means of egress from any part of a Open link in same pagestorey to a Open link in same pagerequiredOpen link in same pageexit.
    R-Value (m 2 .K/W) means the thermal resistance of a component calculated by dividing its thickness by its thermal conductivity. Rapid roller door means a door that opens and closes at a speed of not less than 0.5 m/s. Rainwater harvesting system means a Open link in same pageplumbing installation that comprises—
    1. any Open link in same pageplumbing that connects a rainwater tank to any Open link in same pagedrinking water or Open link in same pagenon-drinking water outlets; and
    2. any top-up line that conveys Open link in same pagedrinking water from a Open link in same pageNetwork Utility Operator's water supply to a rainwater tank.
    Recognised expert means a person with qualifications and experience in the area of Open link in same pageplumbing or Open link in same pagedrainage in question recognised by the authority having jurisdiction.
    Explanatory information:

    A Open link in same pagerecognised expert is a person recognised by the authority having jurisdiction as qualified to provide evidence under Open link in same pageA5.3(5). Generally, this means a hydraulic consultant or engineer, however the specific requirements are determined by the authority having jurisdiction.

    Under Open link in same pageA5.3(5), a report from a Open link in same pagerecognised expert may be used as evidence of suitability that a Open link in same pageproduct listed on the Open link in same pageWaterMark Schedule of Excluded Products, or a Open link in same pageplumbing or Open link in same pagedrainage system, complies with a Open link in same pagePerformance Requirement or Open link in same pageDeemed-to-Satisfy Provision.

    State and Territory variation

    For Volume Three see Open link in same page(Tas, Recognised expert)

    Reference building , for the purposes of Volume One, means a hypothetical building that is used to calculate the maximum allowable Open link in same pageannual greenhouse gas emissions and determine the Open link in same pageThermal comfort level for the proposed building. Reference building , for the purposes of Volume Two, means a hypothetical building that is used to determine the maximum allowable Open link in same pageheating load and Open link in same pagecooling load for the proposed building. Reflective insulation means a building membrane with a reflective surface such as a reflective foil laminate, reflective barrier, foil batt or the like capable of reducing radiant heat flow.
    Explanatory information for Volume Two:
    1. Typical Open link in same pageR-Values achieved by adding Open link in same pagereflective insulation are given in the explanatory information accompanying Figures Open link in same page3.12.1.1, Open link in same page3.12.1.3 and Show Full Sized Image3.12.1.4. Information on specific products may be obtained from Open link in same pagereflective insulation manufacturers.
    2. The surface of Open link in same pagereflective insulation may be described in terms of its emittance (or infra-red emittance) or in terms of its reflectance (or solar reflectance). Generally, for the surface of a particular Open link in same pagereflective insulation
    3. emittance + reflectance = 1.
    4. Some types of Open link in same pagereflective insulation may also serve the purposes of waterproofing or vapour proofing.
    Regulated energy means the energy consumed by a building's Open link in same pageservices minus the amount of Open link in same pagerenewable energy generated and used on Open link in same pagesite. Reinforced masonry means masonry reinforced with steel reinforcement that is placed in a bed joint or grouted into a core to strengthen the masonry. Renewable energy means energy that is derived from sources that are regenerated, replenished, or for all practical purposes cannot be depleted and the energy sources include, but are not limited to, solar, wind, hydroelectric, wave action and geothermal. Required means Open link in same pagerequired to satisfy a Open link in same pagePerformance Requirement or a Open link in same pageDeemed-to-Satisfy Provision of the NCC as appropriate. Required safe egress time (RSET) means the time required for safe evacuation of occupants to a place of safety prior to the onset of untenable conditions. Residential aged care building means a Class 3 or 9a building whose residents, due to their incapacity associated with the ageing process, are provided with physical assistance in conducting their daily activities and to evacuate the building during an emergency. Residential care building means a Class 3, 9a or 9c building which is a place of residence where 10% or more of persons who reside there need physical assistance in conducting their daily activities and to evacuate the building during an emergency (including any Open link in same pageaged care building or Open link in same pageresidential aged care building) but does not include a hospital. Resident use area means part of a Class 9c building normally used by residents, and—
    1. includes Open link in same pagesole-occupancy units, lounges, dining areas, activity rooms and the like; but
    2. excludes offices, storage areas, commercial kitchens, commercial laundries and other spaces not for the use of residents.
    Resistance to the incipient spread of fire , in relation to a ceiling membrane, means the ability of the membrane to insulate the space between the ceiling and roof, or ceiling and floor above, so as to limit the temperature rise of materials in this space to a level which will not permit the rapid and general spread of fire throughout the space.
    Explanatory information:

    Open link in same page Resistance to the incipient spread of fire refers to the ability of a ceiling to prevent the spread of fire and thermally insulate the space between the ceiling and the roof or floor above. "Open link in same pageResistance to the incipient spread of fire" is superior to "fire-resistance" because it requires a higher standard of heat insulation.

    The definition is used in Volume Two for separating floors/ceilings for a Class 1a dwelling located above a non-appurtenant Open link in same pageprivate garage.

    Rise in storeys means the greatest number of Open link in same pagestoreys calculated in accordance with Open link in same pageC1.2 of Volume One. Riser means the height between consecutive treads and between each Open link in same pagelanding and continuous tread. Roof light , for the purposes of Open link in same pageSection J and Open link in same pagePart F4 in Volume One, and Open link in same pageParts 2.6, Open link in same page3.8.4 and Open link in same pagePart 3.12 in Volume Two, means a skylight, Open link in same pagewindow or the like installed in a roof—
    1. to permit natural light to enter the room below; and
    2. at an angle between 0 and 70 degrees measured from the horizontal plane.
    Rolled fill means material placed in layers and compacted by repeated rolling by an excavator. Safe place means—
    1. a place of safety within a building—
      1. which is not under threat from a fire; and
      2. from which people must be able to safely disperse after escaping the effects of an emergency to a road or Open link in same pageopen space; or
    2. a road or Open link in same pageopen space.
    Sanitary compartment means a room or space containing a closet pan or urinal (see Open link in same pageFigure 7).
    Figure 7 Identification of a sanitary compartment
    Show Full Sized ImageFigure 1.1.6 Identification of a sanitary compartment
    Sarking-type material means a material such as a Open link in same pagereflective insulation or other flexible membrane of a type normally used for a purpose such as waterproofing, vapour management or thermal reflectance. School includes a primary or secondary Open link in same pageschool, college, university or similar educational establishment. Self-closing , for the purposes of Volume One, applied to a door, means equipped with a device which returns the door to the fully closed position immediately after each opening. Self-closing , for the purposes of Volume Two, applied to a door or Open link in same pagewindow, means equipped with a device which returns the door or Open link in same pagewindow to the fully closed and latched position immediately after each manual opening. Sensible heat gain means the heat gained which causes a change in temperature Separating element means a barrier that exhibits fire Open link in same pageintegrity, Open link in same pagestructural adequacy, Open link in same pageinsulation, or a combination of these for a period of time under specified conditions (often in accordance with AS 1530.4). Separating wall means a wall that is common to adjoining Class 1 buildings (see Open link in same pageFigure 8).
    Figure 8 Separating wall
    Show Full Sized ImageFigure 1.1.3 Separating wall
    Note:

    In Volume Two may also be known as a party wall and typically is Open link in same pagerequired to be Open link in same pagefire-resisting construction (see Open link in same pageParts 3.7.2 and Open link in same page3.7.3)

    Service , for the purposes of Open link in same pageSection J in Volume One, means a mechanical or electrical system that uses energy to provide Open link in same pageair-conditioning, mechanical ventilation, heated water supply, artificial lighting, vertical transport and the like within a building, but which does not include—
    1. systems used solely for emergency purposes; and
    2. cooking facilities; and
    3. portable appliances.
    Service station means a garage which is not a Open link in same pageprivate garage and is for the servicing of vehicles, other than only washing, cleaning or polishing. Shaft means the walls and other parts of a building bounding—
    1. a well, other than an Open link in same pageatrium well; or
    2. a vertical chute, duct or similar passage, but not a chimney or flue.
    Shower area means the area affected by water from a shower, including a shower over a bath. Single leaf masonry means outer walls constructed with a single thickness of masonry unit. Site means the part of the allotment of land on which a building stands or is to be erected. Sitework means work on or around a Open link in same pagesite, including earthworks, preparatory to or associated with the construction, Open link in same pagealteration, demolition or removal of a building. Small-scale Technology Certificate means a certificate issued under the Commonwealth Government's Small-scale Renewable Energy Scheme. Small-sized, low-speed automatic lift means a restricted use power-operated device for the infrequent raising or lowering of people with limited mobility on a platform that is controlled automatically but has the capability of being electrically isolated by a key-lockable control. Smoke-and-heat vent means a vent, located in or near the roof for smoke and hot gases to escape if there is a fire in the building. Smoke-Developed Index means the index number for smoke as determined by AS/NZS 1530.3. Smoke development rate means the development rate for smoke as determined by testing flooring materials in accordance with AS ISO 9239.1. Smoke growth rate index (SMOGRA RC ) means the index number for smoke used in the regulation of Open link in same pagefire hazard properties and applied to materials used as a finish, surface, lining or attachment to a wall or ceiling. Solar admittance means the fraction of incident irradiance on a Open link in same pagewall-glazing construction that adds heat to a building's space. Sole-occupancy unit means a room or other part of a building for occupation by one or joint owner, lessee, tenant, or other occupier to the exclusion of any other owner, lessee, tenant, or other occupier and includes—
    1. a dwelling; or
    2. a room or suite of rooms in a Class 3 building which includes sleeping facilities; or
    3. a room or suite of associated rooms in a Class 5, 6, 7, 8 or 9 building; or
    4. a room or suite of associated rooms in a Class 9c building, which includes sleeping facilities and any area for the exclusive use of a resident.
    Spandrel panel , for the purposes of Open link in same pageSection J of Volume One, means the opaque part of a façade in curtain wall construction which is commonly adjacent to, and integrated with, Open link in same pageglazing. Spiral stairway means a stairway with a circular plan, winding around a central post with steps that radiate from a common centre or several radii (see Open link in same pageFigures 3.9.1.2(a) and Open link in same page(b)). Spread-of-Flame Index means the index number for spread of flame as determined by AS/NZS 1530.3. Sprinkler alarm switch , for the purposes of Open link in same pageSpecification E2.2d of Volume One, means a device capable of sending an electrical signal to activate an alarm when a residential sprinkler head is activated (e.g. a flow switch). Stage means a floor or platform in a Class 9b building on which performances are presented before an audience. Stairway platform lift means a power-operated device for raising or lowering people with limited mobility on a platform (with or without a chair) in the direction of a stairway. Standard Fire Test means the Fire-resistance Tests of Elements of Building Construction as described in AS 1530.4. Storey means a space within a building which is situated between one floor level and the floor level next above, or if there is no floor above, the ceiling or roof above, but not—
    1. a space that contains only—
      1. a lift Open link in same pageshaft, stairway or meter room; or
      2. a bathroom, shower room, laundry, water closet, or other Open link in same pagesanitary compartment; or
      3. accommodation intended for not more than 3 vehicles; or
      4. a combination of the above; or
    2. a Open link in same pagemezzanine.
    Structural adequacy , in relation to an FRL, means the ability to maintain stability and adequate Open link in same pageloadbearing capacity as determined by AS 1530.4. Structural member means a component or part of an assembly which provides vertical or lateral support to a building or structure. Surface water means all naturally occurring water, other than sub-Open link in same pagesurface water, which results from rainfall on or around the Open link in same pagesite or water flowing onto the Open link in same pagesite. Swimming pool means any excavation or structure containing water and principally used, or that is designed, manufactured or adapted to be principally used for swimming, wading, paddling, or the like, including a bathing or wading pool, or spa. Tapered tread means a stair tread with a walking area that grows smaller towards one end. Thermal comfort level means the level of thermal comfort in a building expressed as a Open link in same pagePMV sensation scale. Total R-Value (m².K/W) , for the purposes of Volume One, means the sum of the Open link in same pageR-Values of the individual component layers in a composite element including any building material, insulating material, airspace, thermal bridging and associated surface resistances. Total R-Value (m².K/W) , for the purposes of Volume Two, means the sum of the Open link in same pageR-Values of the individual component layers in a composite element including any building material, insulating material, airspace and associated surface resistances. Total System Solar Heat Gain Coefficient (SHGC) , for the purposes of Volume One, means the fraction of incident irradiance on a Open link in same pagewall-glazing construction or a Open link in same pageroof light that adds heat to a building’s space. Total System Solar Heat Gain Coefficient (SHGC) , for the purposes of Volume Two, means the fraction of incident irradiance on Open link in same pageglazing or a Open link in same pageroof light that adds heat to a building’s space. Total System U-Value (W/m².K) , for the purposes of Volume One, means the thermal transmittance of the composite element allowing for the effect of any airspaces, thermal bridging and associated surface resistances. Total System U-Value (W/m².K) , for the purposes of Volume Two, means the thermal transmittance of the composite element allowing for the effect of any airspaces and associated surface resistances. Treatment area means an area within a Open link in same pagepatient care area such as an operating theatre and rooms used for recovery, minor procedures, resuscitation, intensive care and coronary care from which a patient may not be readily moved. Uncontrolled discharge means any unintentional release of fluid from a Open link in same pageplumbing and Open link in same pagedrainage system and includes leakage and seepage. Unique wall , for the purposes of Open link in same pageFV1.1 in Volume One and Open link in same pageV2.2.1 in Volume Two, means a wall which is neither a Open link in same pagecavity wall nor a Open link in same pagedirect fix cladding wall. Unobstructed opening , for the purposes of Open link in same pagePart 3.6 in Volume Two, means a glazed area that a person could mistake for an open doorway or clearway and walk into the glazed panel. Unreinforced masonry means masonry that is not reinforced. Vapour pressure means the pressure at which water vapour is in thermodynamic equilibrium with its condensed state. Ventilation opening means an opening in the Open link in same pageexternal wall, floor or roof of a building designed to allow air movement into or out of the building by natural means including a permanent opening, an openable part of a Open link in same pagewindow, a door or other device which can be held open. Verification Method means a test, inspection, calculation or other method that determines whether a Open link in same pagePerformance Solution complies with the relevant Open link in same pagePerformance Requirements. Vessel , for the purposes of Volume One and Open link in same pagePart 3.8.1 in Volume Two, means an open, pre-formed, pre-finished concave receptacle capable of holding water, usually for the purpose of washing, including a basin, sink, bath, laundry tub and the like. Visibility means the maximum distance at which an object of defined size, brightness and contrast can be seen and recognised. Voltage means a difference of potential, measured in Volts (V) and includes Open link in same pageextra-low voltage and Open link in same pagelow voltage. Waffle raft means a stiffened raft with closely spaced ribs constructed on the ground and with slab panels supported between ribs. Wall-glazing construction , for the purposes of Open link in same pageSection J in Volume One, means the combination of wall and Open link in same pageglazing components comprising the Open link in same pageenvelope of a building, excluding—
    1. Open link in same pagedisplay glazing; and
    2. opaque non-glazed openings such as doors, vents, penetrations and shutters.
    Ward area means that part of a Open link in same pagepatient care area for resident patients and may contain areas for accommodation, sleeping, associated living and nursing facilities. Water control layer means a Open link in same pagepliable building membrane or the exterior cladding when no Open link in same pagepliable building membrane is present. WaterMark Conformity Assessment Body (WMCAB) means a conformity assessment body registered with and accredited by the Open link in same pageJAS-ANZ to conduct evaluations leading to Open link in same pageproduct certification and contracted with the Open link in same pageadministering body to issue the Open link in same pageWaterMark Licence. WaterMark Certification Scheme means the ABCB scheme for certifying and authorising Open link in same pageplumbing and Open link in same pagedrainage Open link in same pageproducts. WaterMark Licence means a licence issued by a Open link in same pageWaterMark Conformity Assessment Body. WaterMark Schedule of Excluded Products means the list maintained by the Open link in same pageadministering body of Open link in same pageproducts excluded from the Open link in same pageWaterMark Certification Scheme. WaterMark Schedule of Products means the list maintained by the Open link in same pageadministering body of Open link in same pageproducts included in the Open link in same pageWaterMark Certification Scheme, and the specifications to which the Open link in same pageproducts can be certified. Waterproof means the property of a material that does not allow moisture to penetrate through it. Water resistant means the property of a system or material that restricts moisture movement and will not degrade under conditions of moisture. Water sensitive materials means materials that have an inherent capacity to absorb water vapour and include timber, plasterboard, plywood, oriented strand board and the like. Watertight means will not allow water to pass from the inside to the outside of the component or joint and vice versa. Wet area means an area within a building supplied with water from a water supply system, which includes bathrooms, showers, laundries and Open link in same pagesanitary compartments and excludes kitchens, bar areas, kitchenettes or domestic food and beverage preparation areas. Winders means treads within a straight Open link in same pageflight that are used to change direction of the stair (see Open link in same pageFigure 4). Window includes a Open link in same pageroof light, glass panel, glass block or brick, glass louvre, glazed sash, glazed door, or other device which transmits natural light directly from outside a building to the room concerned when in the closed position. Yield means the mass of a combustion product generated during combustion divided by the mass loss of the test specimen as specified in the Open link in same pagedesign fire. Zone protection means the installation of a Open link in same pagebackflow prevention device at the point where a water service is connected to multiple fixtures or appliances, with no Open link in same pagebackflow prevention device installed as Open link in same pageindividual protection downstream of this point.