Part D2 Provision for escape
Introduction to this Part
This Part contains Deemed-to-Satisfy Provisions for Part D1. It sets out required numbers, dimensions and placement of exits, rules for measuring building occupancy and travel distance to exits, places exits lead to and the use of horizontal exits within a building.
Deemed-to-Satisfy Provisions
D2D1
Deemed-to-Satisfy Provisions
2019: D1.0
- D2D2 to D2D23, D3D2 to D3D30 and D4D2 to D4D13; and
- in a building containing an atrium, Part G3; and
- in a building in an alpine area, Part G4; and
- for a building containing an occupiable outdoor area, Part G6; and
- for additional requirements for Class 9b buildings, Part I1; and
- for public transport buildings, Part I2; and
- for farm sheds, Part I3.
Notes
There are no Deemed-to-Satisfy Provisions for D1P7 in respect of using lifts to assist occupants to evacuate a building.
D2D2
Application of Part
2019: D1.1
The Deemed-to-Satisfy Provisions of this Part do not apply to the internal parts of a sole-occupancy unit in a Class 2 or 3 building or a Class 4 part of a building.
D2D3
Number of exits required
2019: D1.2
- In addition to any horizontal exit, not less than 2 exits must be provided from the following:
- Each storey if the building has an effective height of more than 25 m.
- A Class 2 or 3 building subject to C2D6.
- The requirements of (a)(i) do not apply to a part of a storey that—
- is provided with direct egress to a road or open space; and
- satisfies D2D5 by the provision of 1 exit.
SA D2D3 Number of exits required2019: D1.2
- Each storey if the building has an effective height of more than 25 m.
- A Class 2 or 3 building subject to C2D6.
- A storage shed in a bulk grain storage facility if the distance of travel to an exit is more than 150 m.
- The gallery level in a cell type silo in a bulk grain storage facility.
- the floor area of the storey is not more than 50 m²; and
- the distance of travel from any point on the floor to a single exit is not more than 20 m.
- In addition to any horizontal exit, not less than 2 exits must be provided from the following:
- Each storey if the building has a rise in storeys of more than 6 or an effective height of more than 25 m.
- Any storey which includes a patient care area in a Class 9a health-care building.
- Any storey that contains sleeping areas in a Class 9c building.
- Any storey used as a Class 9b early childhood centre, or any Class 9b early childhood centre which forms part of a storey.
- Each storey in a primary or secondary school with a rise in storeys of 2 or more.
- Any storey or mezzanine that accommodates more than 50 persons, calculated under D2D18.
- The requirements of (a) do not apply to a part of a storey that—
- is a plant room, machinery room, storeroom, lift-machine room or the like; and
- is provided with direct egress to a road, open space or a fire-isolated exit complying with D2D12(2); and
- satisfies D2D5 by the provision of 1 exit.
NSW D2D3 Number of exits required2019: D1.2
- In addition to any horizontal exit, not less than 2 exits must be provided from the following:
- Each storey if the building has a rise in storeys of more than 6 or an effective height of more than 25 m.
- Any storey which includes a patient care area in a Class 9a health-care building.
- Any storey that contains sleeping areas in a Class 9c building.
- Any storey used as a Class 9b early childhood centre, or any Class 9b early childhood centre which forms part of a storey.
- Each storey in a primary or secondary school with a rise in storeys of 2 or more.
- Any storey or mezzanine that accommodates more than 50 persons, calculated under D2D18.
- Any storey or mezzanine within an auditorium in an entertainment venue.
- The requirements of (a) do not apply to a part of a storey that—
- is a plant room, machinery room, storeroom, lift-machine room or the like; and
- is provided with direct egress to a road, open space or a fire-isolated exit complying with D2D12(2); and
- satisfies D2D5 by the provision of 1 exit.
D2D4
When fire-isolated stairways and ramps are required
2019: D1.3
- Subject to (b), every stairway or ramp serving as a required exit must be fire-isolated unless it connects, passes through or passes by not more than—
- Notwithstanding (a), one extra storey of any classification may be included if—
- it is only for the accommodation of motor vehicles or for other ancillary purposes; or
- the building has a sprinkler system (other than a FPAA101D system) complying with Specification 17 installed throughout; or
- the required exit does not provide access to or egress for, and is separated from, the extra storey by construction having—
- an FRL of –/60/60, if non-loadbearing; and
- an FRL of 90/90/90, if loadbearing; and
- no opening that could permit the passage of fire or smoke.
- in a Class 9a health-care building — it connects, or passes through or passes by not more than 2 consecutive storeys in areas other than patient care areas; or
- it is part of an open spectator stand; or
- in any other case, except in a Class 9b early childhood centre or a Class 9c building, it connects, passes through or passes by not more than 2 consecutive storeys and one extra storey of any classification may be included if—
- the building has a sprinkler system (other than a FPAA101D system) complying with Specification 17 installed throughout; or
- the required exit does not provide access to or egress for, and is separated from, the extra storey by construction having—
- an FRL of –/60/60, if non-loadbearing; and
- an FRL of 90/90/90 for Type A construction or 60/60/60 for Type B or C construction, if loadbearing; and
- no opening that could permit the passage of fire or smoke.
SA D2D4 When fire-isolated stairways and ramps are required2019: D1.3
- in a Class 9a health-care building — it connects, or passes through or passes by not more than 2 consecutive storeys in areas other than patient care areas; or
- it is part of an open spectator stand; or
- in any other case except in a Class 9b early childhood centre or a Class 9c building, it connects, passes through or passes by not more than 2 consecutive storeys and one extra storey of any classification may be included if—
- the building has a sprinkler system (other than a FPAA101D system) complying with Specification 17 installed throughout; or
- the required exit does not provide access to or egress for, and is separated from, the extra storey by construction having—
- an FRL of –/60/60, if non-loadbearing; and
- an FRL of 90/90/90 for Type A construction or 60/60/60 for Type B or C construction, if loadbearing; and
- no opening that could permit the passage of fire or smoke; or
- it is a required exit from a bulk grain storage facility and there are no window or door openings within 3 m of the stairway, ramp or ladder.
Exemptions
D2D4(2) does not apply to—
- a Class 9b early childhood centre wholly within a storey that provides direct egress to a road or open space; or
- a Class 9b early childhood centre with a rise in storeys of not more than 2, where the Class 9b early childhood centre is the only use in that building.
D2D5
Exit travel distances
2019: D1.4
- The entrance doorway of any sole-occupancy unit must be not more than—
- 6 m from an exit or from a point from which travel in different directions to 2 exits is available; or
- 20 m from a single exit serving the storey at the level of egress to a road or open space; and
- no point on the floor of a room which is not in a sole-occupancy unit must be more than 20 m from an exit or from a point at which travel in different directions to 2 exits is available.
- no point on a floor must be more than 20 m from an exit, or a point from which travel in different directions to 2 exits is available, in which case the maximum distance to one of those exits must not exceed 40 m; and
- in a Class 5 or 6 building, the distance to a single exit serving a storey at the level of access to a road or open space may be increased to 30 m.
- no point on the floor must be more than 12 m from a point from which travel in different directions to 2 of the required exits is available; and
- the maximum distance to one of those exits must not be more than 30 m from the starting point.
VIC D2D5 Exit travel distances2019: D1.4
- the path of travel from the room concerned to that exit is through another area which is a corridor, hallway, lobby, ramp or other circulation space; and
- the room is smoke-separated from the circulation space by construction having an FRL of not less than 60/60/60 with every doorway in that construction protected by a tight fitting, self-closing, solid-core door not less than 35 mm thick; and
- the maximum distance of travel does not exceed 40 m within the room and 20 m from the doorway to the room through the circulation space to the exit.
SA D2D5 Exit travel distances2019: D1.4
- no point on the floor must be more than 20 m from an exit, or a point from which travel in different directions to 2 exits is available, in which case the maximum distance to one of those exits must not exceed 60 m; and
- in a machinery room, plant-room or the like, the distance to a single exit serving a storey at the level of access to a road or open space may be increased to 30 m.
SA D2D5 Exit travel distances2019: D1.4
D2D6
Distance between alternative exits
2019: D1.5
Exits that are required as alternative means of egress must be—
- distributed as uniformly as practicable within or around the storey served and in positions where unobstructed access to at least 2 exits is readily available from all points on the floor including lift lobby areas; and
- not less than 9 m apart; and
- not more than—
- in a Class 2 or 3 building — 45 m apart; or
- in a Class 9a health-care building, if such required exit serves a patient care area — 45 m apart; or
- in all other cases — 60 m apart; and
- located so that alternative paths of travel do not converge such that they become less than 6 m apart; and
- notwithstanding (c), exits that are required as alternative means of egress in a farm building must not be more than 80 m apart.
Distance between alternative exits
Exits that are required as alternative means of egress must be—
- distributed as uniformly as practicable within or around the storey served and in positions where unobstructed access to at least 2 exits is readily available from all points on the floor including lift lobby areas; and
- not less than 9 m apart; and
- not more than—
- in a Class 2 or 3 building — 45 m apart; or
- in a Class 9a health-care building, if such required exit serves a patient care area — 45 m apart; or
- in all other cases — 60 m apart; and
- located so that alternative paths of travel do not converge such that they become less than 6 m apart.
D2D7
Height of exits, paths of travel to exits and doorways
2019: D1.6(a)
D2D8
Width of exits and paths of travel to exits
2019: D1.6(b), (c), (d) and (e)
- 1 m; or
- 1.8 m in a passageway, corridor or ramp normally used for the transportation of patients in beds within a treatment area or ward area; and
- in a public corridor in a Class 9c aged care building, notwithstanding (2) and (3)—
- 1.5 m; and
- 1.8 m for the full width of the doorway, providing access into a sole-occupancy unit or communal bathroom.
- 1 m plus 250 mm for each 25 persons (or part) in excess of 100; or
- 1.8 m in a passageway, corridor or ramp normally used for the transportation of patients in beds within a treatment area or ward area.
- 2 m plus 500 mm for every 60 persons (or part) in excess of 200 persons if egress involves a change in floor level by a stairway or ramp with a gradient steeper than 1 in 12; or
- in any other case, 2 m plus 500 mm for every 75 persons (or part) in excess of 200.
NSW D2D8 Width of exits and paths of travel to exits2019: D1.6(b), (c), (d) and (e)
- the aggregate width must be not less than 2 m plus 500 mm for every 50 persons or part in excess of 200; and
- D2D8(1), (2) and (3) do not apply; and
- where one or more paths of travel merge, the width of the combined path of travel must be not less than the sum of the required widths of those paths of travel; and
- the required widths of those paths of travel connecting the exits from the building to a public road or open space must comply with (c); or
D2D9
Width of doorways in exits or paths of travel to exits
2019: D1.6(f)
In a required exit or path of travel to an exit, the unobstructed width of a doorway must be not less than—
- in patient care areas through which patients would normally be transported in beds—
- if the doorway provides access to, or from, a corridor of width—
- less than 2.2 m — 1200 mm; or
- 2.2 m or greater — 1070 mm; and
- where the doorway referred to in (i) is fitted with two leaves and one leaf is secured in the closed position in accordance with D3D26(3)(e), the other leaf must permit an unobstructed opening not less than 800 mm wide; or
- if the doorway provides access to, or from, a corridor of width—
- in patient care areas in a horizontal exit — 1250 mm; or
- the unobstructed width of each exit provided to comply with D2D8(1), (2), (3) or (4), minus 250 mm; or
- in any other case except where it opens to a sanitary compartment or bathroom — 750 mm wide.
Width of doorways in exits or paths of travel to exits
In a required exit or path of travel to an exit, the unobstructed width of a doorway must be not less than—
- in patient care areas through which patients would normally be transported in beds—
- if the doorway provides access to, or from, a corridor of width—
- less than 2.2 m — 1200 mm; or
- 2.2 m or greater — 1070 mm; and
- where the doorway referred to in (i) is fitted with two leaves and one leaf is secured in the closed position in accordance with D3D26(3)(e), the other leaf must permit an unobstructed opening not less than 800 mm wide; or
- if the doorway provides access to, or from, a corridor of width—
- in patient care areas in a horizontal exit — 1250 mm; or
- the unobstructed width of each exit provided to comply with D2D8(1), (2), (3) or (4), minus 250 mm; or
- in a Class 9c building, 800 mm, except—
- in resident use areas the minimum unobstructed width must be 870 mm; and
- for doorways leading from a public corridor to a sole-occupancy unit the minimum unobstructed width must be 1070 mm; and
- where the doorway is fitted with two leaves and one leaf is secured in the closed position in accordance with D3D26(3)(e), the other leaf must permit an unobstructed opening not less than 870 mm wide in resident use areas and 800 mm wide in non-resident use areas; or
- in a Class 9b building used as an entertainment venue—
- in any other case except where it opens to a sanitary compartment or bathroom — 750 mm wide.
Width of doorways in exits or paths of travel to exits
In a required exit or path of travel to an exit, the unobstructed width of a doorway must be not less than—
- in patient care areas through which patients would normally be transported in beds—
- if the doorway provides access to, or from, a corridor of width—
- less than 2.2 m — 1200 mm; or
- 2.2 m or greater — 1070 mm; and
- where the doorway referred to in (i) is fitted with two leaves and one leaf is secured in the closed position in accordance with D3D26(3)(e), the other leaf must permit an unobstructed opening not less than 800 mm wide; or
- if the doorway provides access to, or from, a corridor of width—
- in patient care areas in a horizontal exit — 1250 mm; or
- the unobstructed width of each exit provided to comply with D2D8, minus 250 mm; or
- in a Class 9c building, 800 mm, except—
- in resident use areas the minimum unobstructed width must be 870 mm; and
- for doorways leading from a public corridor to a sole-occupancy unit the minimum unobstructed width must be 1070 mm; and
- where the doorway is fitted with two leaves and one leaf is secured in the closed position in accordance with D3D26(3)(e), the other leaf must permit an unobstructed opening not less than 870 mm wide in resident use areas and 800 mm wide in non-resident use area; or
- in any other case except where it opens to a sanitary compartment or bathroom — 750 mm wide.
D2D10
Exit width not to diminish in direction of travel
2019: D1.6(g)
The unobstructed width of a required exit must not diminish in the direction of travel to a road or open space, except where the width is increased in accordance with D2D8(1)(b) or D2D9(a)(i).
D2D11
Determination and measurement of exits and paths of travel to exits
2019: D1.6(h) and (i)
For the purposes of D2D7 to D2D10 the following apply:
- The required width of a stairway or ramp in a required exit or path of travel to an exit must—
- be measured clear of all obstructions such as handrails, projecting parts of barriers and the like; and
- extend without interruption, except for ceiling cornices, to a height not less than 2 m vertically above a line along the nosings of the treads or the floor surface of the ramp or landing.
- To determine the aggregate unobstructed width, the number of persons accommodated must be calculated according to D2D18.
D2D12
Travel via fire-isolated exits
2019: D1.7
- a public corridor, public lobby or the like; or
- a sole-occupancy unit occupying all of a storey; or
- a sanitary compartment, airlock or the like.
- to a road or open space; or
- to a point—
- in a storey or space, within the confines of the building, that is used only for pedestrian movement, car parking or the like and is open for at least ⅔ of its perimeter; and
- from which an unimpeded path of travel, not further than 20 m, is available to a road or open space; or
- into a covered area that—
- adjoins a road or open space; and
- is open for at least ⅓ of its perimeter; and
- has an unobstructed clear height throughout, including the perimeter openings, of not less than 3 m; and
- provides an unimpeded path of travel from the point of discharge to the road or open space of not more than 6 m.
- That part of the wall must have—
- an FRL of not less than 60/60/60; and
- any openings protected internally in accordance with C4D5; and
- The protection required by (a) must extend for a distance of 3 m above or below, as appropriate, the level of the path of travel, or for the height of the wall, whichever is the lesser.
D2D13
External stairways or ramps in lieu of fire-isolated exits
2019: D1.8
- non-combustible throughout; and
- protected in accordance with (3) if it is within 6 m of, and exposed to, any part of the external wall of the building it serves.
- exposure under (1)(b), is measured in accordance with S5C2, as if the exit was a building element and the external wall of the building was a fire-source feature to the exit, except that the FRL required in S5C2(1)(a) must not be less than 60/60/60; and
- the plane formed at the construction edge or perimeter of an unenclosed building or part such as an open-deck carpark, open spectator stand or the like, is deemed to be an external wall; and
- openings in an external wall and openings under (3) and (4), are determined in accordance with C4D2.
- The part of the external wall of the building to which the exit is exposed must have—
- an FRL of not less than 60/60/60; and
- no openings less than 3 m from the exit (except a doorway serving the exit protected by a –/60/30 fire door in accordance with C4D9(1)); and
- any opening 3 m or more but less than 6 m from the exit, protected in accordance with C4D5 and if wall wetting sprinklers are used, they are located internally.
- The exit must be protected by construction of a wall, roof, floor or other shielding element as appropriate in accordance with (4) from—
- any part of the external wall of the building having an FRL of less than 60/60/60; and
- any openings in the external wall.
- have an FRL of not less than 60/60/60; and
- have no openings less than 3 m from the external wall of the building (except a doorway serving the exit protected by a –/60/30 fire door in accordance with C4D9(1)); and
- have any opening 3 m or more but less than 6 m from any part of the external wall of the building protected in accordance with C4D5 and if wall wetting sprinklers are used, they are located on the side exposed to the external wall.
D2D14
Travel by non-fire-isolated stairways or ramps
2019: D1.9
- 30 m in a building of Type C construction; or
- 60 m in all other cases.
- 15 m from a doorway providing egress to a road or open space or from a fire-isolated passageway leading to a road or open space; or
- 30 m from one of 2 such doorways or passageways if travel to each of them from the non-fire-isolated stairway or non-fire-isolated ramp is in opposite or approximately opposite directions.
- 20 m from a doorway providing egress to a road or open space or from a fire-isolated passageway leading to a road or open space; or
- 40 m from one of 2 such doorways or passageways if travel to each of them from the non-fire-isolated stairway or non-fire-isolated ramp is in opposite or approximately opposite directions.
- provide separate egress to a road or open space; and
- be suitably smoke-separated from each other at the level of discharge.
SA D2D14 Travel by non-fire-isolated stairways or ramps2019: D1.9
D2D15
Discharge from exits
2019: D1.10
whichever is the greater.
- a ramp or other incline having a gradient not steeper than 1:8 at any part, or not steeper than 1:14 if required by the Deemed-to-Satisfy Provisions of Part D4; or
- except if the exit is from a Class 9a building, a stairway complying with the Deemed-to-Satisfy Provisions of the NCC.
NSW D2D15 Discharge from exits2019: D1.10
D2D16
Horizontal exits
2019: D1.11
- between sole-occupancy units; or
- in a Class 9b building used as an early childhood centre, primary or secondary school.
- 2.5 m2 per patient/resident in a Class 9a health-care building or Class 9c aged care building; and
- 0.5 m2 per person in any other case.
- at least one other horizontal exit; and
- an exit other than a horizontal exit.
D2D17
Non-required stairways, ramps or escalators
2019: D1.12
An escalator, moving walkway or non-required non fire-isolated stairway or pedestrian ramp—
- must not be used between storeys in—
- a patient care area in a Class 9a health-care building; or
- a resident use area in a Class 9c building; and
- may connect any number of storeys if it is—
- in an open spectator stand or indoor sports stadium; or
- in a carpark or an atrium; or
- outside a building; or
- in a Class 5 or 6 building that is sprinklered throughout, where the escalator, walkway, stairway or ramp complies with Specification 14; and
- except where permitted in (b) must not connect more than—
- 3 storeys if—
- each of those storeys is provided with a sprinkler system (other than a FPAA101D system) complying with Specification 17 throughout; and
- at least one of those storeys is situated at a level at which there is a direct egress to a road or open space; or
- 2 storeys, provided that those storeys are consecutive, and one of the storeys is situated at a level at which there is direct egress to a road or open space; and
- 3 storeys if—
- except where permitted in (b) or (c), must not connect, directly or indirectly, more than 2 storeys at any level in a Class 5, 6, 7, 8 or 9 building and those storeys must be consecutive.
D2D18
Number of persons accommodated
2019: D1.13
For the purposes of the Deemed-to-Satisfy Provisions, the number of persons accommodated in a storey, room or mezzanine must be determined with consideration to the purpose for which it is used and the layout of the floor area by—
- calculating the sum of the numbers obtained by dividing the floor area of each part of the storey by the number of square metres per person listed in Table D2D18 according to the use of that part, excluding spaces set aside for—
- lifts, stairways, ramps and escalators, corridors, hallways, lobbies and the like; and
- service ducts and the like, sanitary compartments or other ancillary uses; or
- reference to the seating capacity in an assembly building or room; or
- any other suitable means of assessing its capacity.
Type of use | Area per person |
---|---|
Art gallery, exhibition area, museum | 4 m2 |
Bar — standing | 0.5m2 |
Bar — other | 1 m2 |
Board room | 2 m2 |
Boarding house | 15 m2 |
Cafe, church, dining room | 1 m2 |
Carpark | 30 m2 |
Computer room | 25 m2 |
Court room — judicial area | 10 m2 |
Court room — public seating | 1 m2 |
Dance floor | 0.5 m2 |
Dormitory | 5 m2 |
Early childhood centre | 4 m2 |
Factory — machine shop, fitting shop or like place for cutting, grading, finishing or fitting of metals or glass, except in the fabrication of structural steelwork or manufacture of vehicles or bulky products | 5 m2 |
Factory — areas used for fabrication and processing other than a machine shop, fitting shop or the like. | 50 m2 |
Factory — a space in which the layout and natural use of fixed plant or equipment determines the number of persons who will occupy the space during working hours | Area per person determined by the use of the plant or equipment |
Gymnasium | 3 m2 |
Hostel, hotel, motel, guest house | 15 m2 |
Indoor sports stadium—arena | 10 m2 |
Kiosk | 1 m2 |
Kitchen, laboratory, laundry | 10 m2 |
Library — reading space | 2 m2 |
Library — storage space | 30 m2 |
Office, including one for typewriting or document copying | 10 m2 |
Patient care areas | 10 m2 |
Plant room — ventilation, electrical or other service units | 30 m2 |
Plant room — boilers or power plant | 50 m2 |
Reading room | 2 m2 |
Restaurant | 1 m2 |
School — general classroom | 2 m2 |
School — multi-purpose hall | 1 m2 |
School — staff room | 10 m2 |
School — trade and practical area — primary | 4 m2 |
School — trade and practical area — secondary | As for workshop |
Shop — space for sale of goods — at a level entered direct from the open air or any lower level | 3 m2 |
Shop — space for sale of goods — all other levels | 5 m2 |
Showroom — display area, covered mall or arcade | 5 m2 |
Skating rink, based on rink area | 1.5 m2 |
Spectator stand, audience viewing area — standing viewing area | 0.3 m2 |
Spectator stand, audience viewing area — removable seating | 1 m2 |
Spectator stand, audience viewing area — fixed seating | Per number of seats |
Spectator stand, audience viewing area — bench seating | 450 mm/person |
Storage space | 30 m2 |
Swimming pool, based on pool area | 1.5 m2 |
Switch room, transformer room | 30 m2 |
Telephone exchange — private | 30 m2 |
Theatre and public hall | 1 m2 |
Theatre dressing room | 4 m2 |
Transport terminal | 2 m2 |
Workshop — for maintenance staff | 30 m2 |
Workshop — for manufacturing processes | As for factory |
Table Notes
Bar standing is an area used by the standing patrons and extends not less than 1.5 m wide from the outside edge of the bar top for the length of the serving area of the bar.
Type of use | Area per person |
---|---|
Art gallery, exhibition area, museum | 4 m2 |
Auditorium — bench seating | 450 mm/person |
Auditorium — fixed seating | count seats |
Auditorium — removable seating | 1 m2 |
Auditorium — standing area | 0.5 m2 |
Bar — standing | 0.5m2 |
Bar — other | 1 m2 |
Board room | 2 m2 |
Boarding house | 15 m2 |
Cafe, church, dining room | 1 m2 |
Carpark | 30 m2 |
Computer room | 25 m2 |
Court room — judicial area | 10 m2 |
Court room — public seating | 1 m2 |
Dance floor | 0.5 m2 |
Dormitory | 5 m2 |
Early childhood centre | 4 m2 |
Entertainment venue — other than auditorium | 1.2 m2 |
Factory — machine shop, fitting shop or like place for cutting, grading, finishing or fitting of metals or glass, except in the fabrication of structural steelwork or manufacture of vehicles or bulky products | 5 m2 |
Factory — areas used for fabrication and processing other than a machine shop, fitting shop or the like | 50 m2 |
Factory — a space in which the layout and natural use of fixed plant or equipment determines the number of persons who will occupy the space during working hours | Area per person determined by the use of the plant or equipment |
Gymnasium | 3 m2 |
Hostel, hotel, motel, guest house | 15 m2 |
Indoor sports stadium—arena | 10 m2 |
Kiosk | 1 m2 |
Kitchen, laboratory, laundry | 10 m2 |
Library — reading space | 2 m2 |
Library — storage space | 30 m2 |
Office, including one for typewriting or document copying | 10 m2 |
Patient care areas | 10 m2 |
Plant room —ventilation, electrical or other service units | 30 m2 |
Plant room — boilers or power plant | 50 m2 |
Reading room | 2 m2 |
Restaurant | 1 m2 |
School — general classroom | 2 m2 |
School — multi-purpose hall | 1 m2 |
School — staff room | 10 m2 |
School — trade and practical area — primary | 4 m2 |
School — trade and practical area — secondary | As for workshop |
Shop — space for sale of goods — at a level entered direct from the open air or any lower level | 3 m2 |
Shop — space for sale of goods — all other levels | 5 m2 |
Showroom — display area, covered mall or arcade | 5 m2 |
Skating rink, based on rink area | 1.5 m2 |
Small live music or arts venue – dance floor | 0.5 m2 |
Small live music or arts venue – Information and education facility | 4 m2 |
Small live music or arts venue – other | 1 m2 |
Spectator stand, audience viewing area — standing viewing area | 0.3 m2 |
Spectator stand, audience viewing area — removable seating | 1 m2 |
Spectator stand, audience viewing area — fixed seating | Per number of seats |
Spectator stand, audience viewing area — bench seating | 450 mm/person |
Storage space | 30 m2 |
Swimming pool, based on pool area | 1.5 m2 |
Switch room, transformer room | 30 m2 |
Telephone exchange — private | 30 m2 |
Theatre dressing room | 4 m2 |
Transport terminal | 2 m2 |
Workshop — for maintenance staff | 30 m2 |
Workshop — for manufacturing processes | As for factory |
Note
Bar standing is an area used by the standing patrons and extends not less than 1.5 m wide from the outside edge of the bar top for the length of the serving area of the bar.
D2D19
Measurement of distances
2019: D1.14
The nearest part of an exit means in the case of—
- a fire-isolated stairway, fire-isolated passageway, or fire-isolated ramp, the nearest part of the doorway providing access to them; and
- a non-fire-isolated stairway, the nearest part of the nearest riser; and
- a non-fire-isolated ramp, the nearest part of the junction of the floor of the ramp and the floor of the storey; and
- a doorway opening to a road or open space, the nearest part of the doorway; and
- a horizontal exit, the nearest part of the doorway.
D2D20
Method of measurement
2019: D1.15
The following rules apply:
- In the case of a room that is not a sole-occupancy unit in a Class 2 or 3 building or Class 4 part of a building, the distance includes the straight-line measurement from any point on the floor of the room to the nearest part of a doorway leading from it, together with the distance from that part of the doorway to the single required exit or point from which travel in different directions to 2 required exits is available.
- Subject to (d), the distance from the doorway of a sole-occupancy unit in a Class 2 or 3 building or a Class 4 part of a building is measured in a straight line to the nearest part of the required single exit or point from which travel in different directions to 2 required exits is available.
- Subject to (d), the distance between exits is measured in a straight line between the nearest parts of those exits.
- Only the shortest distance is taken along a corridor, hallway, external balcony or other path of travel that curves or changes direction.
- If more than one corridor, hallway, or other internal path of travel connects required exits, for the purposes of D2D6(c) the measurement is along the path of travel through the point at which travel in different directions to those exits is available, as determined in accordance with D2D5.
- If a wall (including a demountable internal wall) that does not bound a room, corridor, hallway or the like causes a change of direction in proceeding to a required exit, the distance is measured along the path of travel past that wall.
- If permanent fixed seating is provided, the distance is measured along the path of travel between the rows of seats.
- In the case of a non-fire-isolated stairway or non-fire-isolated ramp, the distance is measured along a line connecting the nosings of the treads, or along the slope of the ramp, together with the distance connecting those lines across any intermediate landings.
D2D21
Plant rooms, lift machine rooms and electricity network substations: Concession
2019: D1.16
- a plant room with a floor area of not more than 100 m2; or
- all but one point of egress from a plant room, a lift machine room or a Class 8 electricity network substation with a floor area of not more than 200 m2.
- may—
- form part of an exit provided that in the case of a fire-isolated stairway it is contained within the shaft; or
- discharge within a storey in which case it must be considered as forming part of the path of travel; and
- for a plant room or a Class 8 electricity network substation, must comply with AS 1657; and
- for a lift machine room, where access is provided from within a machine room to a secondary floor, a fixed rung type ladder complying with AS 1657 may be used, provided that—
- the height between the floors is not more than 2800 mm; and
- the ladder is inclined at an angle to the horizontal not less than 65 degrees nor more than 75 degrees; and
- the distance between the front face of the ladder and any adjacent obstruction is not less than—
- 960 mm, where the ladder is inclined 65 degrees to the horizontal; or
- 760 mm, where the ladder is inclined 75 degrees to the horizontal; or
- a distance that is determined by interpolating the values in (A) and (B), where the ladder is inclined at any angle between 65 degrees and 75 degrees to the horizontal; and
- a clear space not less than 600 mm exists between the foot of the ladder and any equipment.
SA D2D21 Plant rooms, lift machine rooms and electricity network substations: Concession2019: D1.16
D2D22
Access to lift pits
2019: D1.17
Access to lift pits must—
- where the pit depth is not more than 3 m, be through the lowest landing doors; or
- where the pit depth is more than 3 m, be provided through an access doorway complying with the following:
- In lieu of D2D7 to D2D11, the doorway must be level with the pit floor and not be less than 600 mm wide by 1980 mm high clear opening, which may be reduced to 1500 mm where it is necessary to comply with (ii).
- No part of the lift car or platform must encroach on the pit doorway entrance when the car is on a fully compressed buffer.
- Access to the doorway must be by a stairway complying with AS 1657.
- In lieu of D3D26, doors fitted to the doorway must be—
- of the horizontal sliding or outwards opening hinged type; and
- self-closing and self-locking from the outside; and
- marked on the landing side with the letters not less than 35 mm high:DANGER LIFTWELL – ENTRY OF UNAUTHORIZED PERSONS PROHIBITED – KEEP CLEAR AT ALL TIMES
D2D23
Egress from primary schools
2019: D1.18
Applications
- For D2D23(1), a primary school includes classrooms, offices, staffrooms, halls, canteens and the like within the primary school.
- For D2D23(2), a primary school includes classrooms, offices, staffrooms, halls, canteens, carparks, end of trip facilities and the like provided solely for the primary school, or school which incorporates the primary school.
Explanatory information
D2D23(1) recognises the difficulties associated with evacuation of primary schools. Should a primary school be proposed within a storey that does not meet the requirements of D2D23, a Performance Solution is to be used to demonstrate compliance with the relevant Performance Requirements.