Part D2 Provision for escape
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.
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.
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
SA D2D6 Distance between alternative exits2019: SA D1.5(e)
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.