VIC Part E3 Stormwater - Roof drainage systems
Introduction to this Part
This Part sets out the requirements for the design, construction, installation, replacement, repair, alteration and maintenance of any part of a roof drainage system
VIC E3O1 Objective2019: FO1
The Objective of this Part is to—
- safeguard people from illness, injury or loss (including loss of amenity) due to the failure of a roof drainage installation; and
- ensure that a roof drainage installation is adequate; and
- conserve water and energy; and
- safeguard the environment; and
- safeguard public and private infrastructure; and
- ensure that a roof drainage installation is designed and is capable of being maintained so that throughout its serviceable life it will continue to satisfy Objectives (a) to (e).
VIC E3F1 Functional statement2019: FF1.1
Buildings are to be provided with a roof drainage installation constructed to provide protection for people, property and the environment from the adverse effects of stormwater.
VIC E3P1 Roof drainage systems2019: FP1.1
VIC E3P2 Overflow2019: FP1.1
A roof drainage system must provide an overflow device to transfer stormwater flows generated by extreme rainfall events.
VIC E3P3 Watertightness2019: FP1.1
All internal roof drainage components must be watertight.
VIC E3P4 Design, construction and installation2019: FP1.4
VIC E3D1 Application2019: F1D1
Performance Requirements E3P1 to E3P4 are satisfied by complying with E3D2.
VIC E3D2 General requirements2019: F1D2
The design, construction, installation, replacement, repair, alteration and maintenance of a roof drainage system must be in accordance with AS/NZS 3500.3 and SA HB 39, subject to following:
- Insert Clause 184.108.40.206 Fastening in AS/NZS 3500.3 as follows: Dowpipes to be securely fastened to walls and structures so as to withstand movement due to thermal expansion or weight due to a partial or total blockage, and
- Where there are any conflicts between AS/NZS 3500.3 and SA HB 39, AS/NZS 3500.3 prevails.