Part 3.8.5 Ventilation
Acceptable construction manual
Except for an exhaust fan from a sanitary compartment, laundry or bathroom, Performance RequirementP2.4.5 is satisfied for a mechanical ventilation system if it is installed in accordance with AS 1668.2.
An exhaust fan from a sanitary compartment, laundry or bathroom must comply with the acceptable construction practice.
Acceptable construction practice
Compliance with this acceptable construction practice satisfies Performance Requirement for ventilation.
220.127.116.11 Ventilation requirements
Openings, windows, doors or other devices which can be opened—
a suitably sized court, or space open to the sky; or
an open verandah, carport, or the like; or
an adjoining room in accordance with (b).
Natural ventilation to a room may come through a window, opening, door or other device from an adjoining room (including an enclosed verandah) if—
the room to be ventilated or the adjoining room is not a sanitary compartment; and
the ventilating areas specified may be reduced as appropriate if direct natural ventilation is provided from another source.
(See Figure 18.104.22.168)
The use of borrowed ventilation is acceptable if the provisions of 22.214.171.124(b) are applied to the subject room and to the total area of each relevant room.
METHOD OF DETERMINING AREAS OF OPENINGS FOR BORROWED VENTILATION
An exhaust fan or other means of mechanical ventilation may be used to ventilate a sanitary compartment, laundry or bathroom, or where mechanical ventilation is provided in accordance with 126.96.36.199(b), provided contaminated air exhausts—
directly to outside the building by way of ducts; or
into a roof space that—
is adequately ventilated by open eaves, and/or roof vents; or
is covered by roof tiles without sarking or similar materials which would prevent venting through gaps between the tiles.
188.8.131.52 Location of sanitary compartments
Sanitary compartments must not open directly into a kitchen or pantry unless—
access is by an airlock, hallway or other room, (see Figure 184.108.40.206); or
the sanitary compartment is provided with an exhaust fan or other means of mechanical exhaust ventilation.
ACCEPTABLE LOCATION OF NON MECHANICALLY VENTILATED SANITARY COMPARTMENT