Sewerage (Lighting Ventilation and Construction) Regulations 1971



    8. Ventilation requirements

    (1) Except where mechanical ventilation complying with the requirements of these regulations is provided, every water closet apartment within a building, not being an apartment to which regulation 6(2) applies, shall comply with the following conditions:

    One of its sides shall be an external wall of the building, abutting onto a street or lane or on an open space within the property, having a width of not less than 1.2 metres and an area of not less than the following

    For first storey above floor level of open space 3.3 square metres.

    For second storey above floor level of open space 6.6 square metres.

    For all other storeys above floor level of open space 9.3 square metres.

    (2) Each water closet apartment shall be provided with a window in the external wall, having a clear light area of not less than 0.2 square metre per closet pan.

    (3) Each water closet apartment shall be provided with direct ventilation to the open air from a point near the ceiling level through a vent or vents, carried as direct to the open air as is practicable and boxed throughout, and having a minimum clear area at any point of not less than 0.015 square metre per closet pan.

    [Regulation 8 errata in Gazette 27 Aug 1971 p. 3148; amended in Gazette 16 Nov 1973 p. 4222; 3 May 1974 p. 1439.]



Note: This is not an authorised version. The only authorised version is the hardcopy (printed) version published under authority of the Government Printer, available from the State Law Publisher, 10 William St Perth W.A. 6000.