Bathroom ventilation regulations according to the building code of australia bca there are a few bathroom ventilation aspects you need to be aware of.
Bca bathroom floor waste.
Bath basin shower discharge to a floor waste gully the floor waste acts as a fixture trap and provides a water seal between the fixtures and the sanitary plumbing.
Guide for builders on how to request a variation wa 198kb.
Nat 290kb this information sheets explains when a floor waste is required in a class 1 building based on the requirements of the bca and australian standards.
In the above situations the floor is required by the ncc to be graded to the floor waste to prevent water overflow from penetrating to other occupancies or public spaces in the same building.
In relation to class 1 buildings the key to when a floor waste is required is dependent on whether the shower area which is defined in the bca as the area affected by water from a shower including a shower over a bath is an enclosed shower area or unenclosed.
The installation of floor wastes in wet areas and grading to the floor waste.
Floor wastes in bathrooms when are they required.
F1 11 provision of floor.
Where the floor of a bathroom or laundry is located at any level above a sole occupancy unit or public space and the floor is required to be graded to the floor waste to permit drainage of water.
If a floor waste gully is installed in a bathroom or laundry must the floor be graded to the gully.
However if your shower is unenclosed perhaps because it s over a bath or because it has one or more sides open then you ll need a floor waste in your bathroom.
In a class 2 or 3 building or class 4 part of a building a bathroom or laundry located at any level above a sole occupancy unit or public space must have a a floor waste.
The bca volume 2 is silent on the need to provide floor wastes in a.
Where a number of fixtures e g.
The bca does not directly cover a balcony or floor waste on a main bathroom floor but we all know balconies are constructed and floor wastes are installed in wet area bathroom laundry toilet and balcony floors to drain surface water into the designated floor waste to prevent water accumulating in the building and damaging building elements.
Not for class 1 and 10 buildings.