VIC Part C4 Low risk on-site liquid trade waste systems
Introduction to this Part
2019: Vic Part H1
This Part sets out the requirements for the design, construction, installation, replacement, repair,
alteration and maintenance of any part of a low risk on-site liquid trade waste system.
The Objective of this part is to—
- safeguard people from illness, injury or loss (including loss of amenity) due to the failure of a low risk on-site liquid trade waste installation; and
- ensure that a low risk on-site liquid trade waste installation (including an installation provided for use by people with a disability) is suitable; and
- conserve water and energy; and
- safeguard the environment; and
- safeguard public and private infrastructure; and
- ensure that a low risk on-site liquid trade waste installation is designed and is capable of being maintained so that throughout its serviceable life it will continue to satisfy Objectives (a) to (e).
- be located as close as practicable to the fixtures that it serves and if of the portable type must be installed above ground; and
- be fitted with a cover which is able to withstand vehicular or pedestrian traffic or other loads likely to be imposed on it and is readily removable by one person; and
- be constructed of materials suitable for the nature of the wastes likely to be discharged through the appliance.
- if fitted with an airtight cover, be provided with a DN 32, DN 50 or DN 80 sized vent as nominated by the relevant Network Utility Operator; and
- be provided with the following outlet ventilation—
- if installed outside a building, a DN 100 sized riser off a disconnector gully in accordance with clause 4.6.2 of AS/NZS 3500.2;
- if not of the portable type and installed inside a building, a DN 50 sized vent off a disconnector gully in accordance with clause 4.6.5 of AS/NZS 3500.2; and
- if of the portable type installed inside a building, a DN 50 sized vent off a DN 80 sized trap riser in accordance with clause 4.6.5 of AS/NZS 3500.2.
- if of the portable type receiving a hydraulic loading of up to 5 fixture units, be a minimum size of DN 50; or
- if of the portable type receiving a hydraulic loading of more than 5 fixture units, be a minimum size of DN 80; or
- in cases other than that in (a) or (b), be a minimum size of DN 100; and
- have a separate trap, of the same size as the outlet pipe, installed at its outlet.
The relevant Authority under the Water Act 1989 or the holder of a licence under the Water Industry Act 1994 may specify conditions of connection to a sewer for low risk trade waste to enter that sewer and may also require that the waste passes through a low risk liquid trade waste appliance of a type nominated by the Authority or holder of a licence before it enters the sewer.
Requirements for low risk on-site liquid trade waste management practices