DG05

Air Movement

Air Movement through a space is a mandatory requirement to provide fresh air to areas so that they can be occupied by people for a prolonged time. In simple buildings this is achieved by the use of operable windows located on two opposite sides to enable natural cross ventilation.

Where natural cross ventilation can not be provided other forms of assisted ventilation will be required. The type of ventilation selected is to be determined based on a Whole of Life assessment of the individual situation.

Refer to DG / COOLING/HEATING

The building regulations and AS 1668 provide direction on air movement and ventilation requirements.

The following sections provide information on the recommended ventilation forms.

Title

Compliance Level

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05.01

Natural Ventilation

Mandatory

Is required to all classrooms for comfort in summer and to maintain a healthy indoor environment.
Where cross ventilation may be restricted (ie where rooms are located on each side of a corridor, at least one whole wall of operable windows plus ceiling fans are required, to provide air movement.
Some windows need to be operable in driving rain and so must be protected with appropriately designed weather hoods, eaves overhang or other method of protection.

05.02

Ceiling Void Ventilation

Mandatory

Provide ventilation so as to remove hot air build-up in large enclosed roof spaces. Roof mounted turbo ventilators are on approved method.

Refer to DG / ROOF MOUNTED TURBO VENTILATORS

05.03

Louvres

Negotiable

Louvres are good at allowing air in from the windward side of a building, but poor from the leeward side. They should not be used where there is poor cross ventilation.

Louvres are to be used on mechanical intakes and discharges, in plant rooms and are to be operable where they serve a naturally ventilated habitable space.

Louvres are to be weatherproof and be fitted with vermin mesh.

05.04

Sanitary Spaces

Mandatory

Require greater air circulation than that required by building regulations, with sufficient natural ventilation or mechanical ventilation, to disperse odours and /or humidity.
Cross ventilation is to be used where possible.

05.05

Storage Spaces

Mandatory

Are to have permanent air ventilation openings (without compromising security), to prevent concentration of odours.