NCC 2019 Volume Three
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Vic Section F Stormwater drainage systems

Vic Section F Stormwater drainage systems

Vic Part F1 Roof drainage systems

Vic Introduction

This Part sets out the requirements for the design, construction, installation, replacement, repair, alteration and maintenance of any part of a roof drainage system.

Explanatory information:

Explanatory information:

Explanatory information:

Objective

Vic FO1

The Objective of this Part is to—

  1. safeguard people from illness, injury or loss (including loss of amenity) due to the failure of a roof drainage installation; and
  2. ensure that a roof drainage installation is adequate; and
  3. conserve water and energy; and
  4. safeguard the environment; and
  5. safeguard public and private infrastructure; and
  6. 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).

Functional statements

Vic 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.

Performance Requirements

Vic FP1.1 Roof drainage systems

(1)

A roof drainage system must dispose of stormwater flows from rainfall events having an average recurrence interval appropriate to:

(a)

The importance of the building

(b)

The severity of potential damage to property, loss of amenity, illness or injury that would result from the failure of the system.

Vic FP1.2 Overflow

(1)

A roof drainage system must provide an overflow device to transfer stormwater flows generated by extreme rainfall events.

Vic FP1.3 Watertightness

(1)

All internal roof drainage components must be watertight.

Vic FP1.4 Design, construction and installation

(1)

A roof drainage system must ensure the following—

(a)

Stormwater is transferred to a point of connection.

(b)

Access for maintenance and clearing blockages.

(2)

A roof drainage installation must avoid the following—

(d)

Foul air and gases accumulating in the roof drainage system

(c)

Loss to buildings and property amenity due to blockages and uncontrolled discharge.

Verification Methods

There are no Verification Methods in this part.

Deemed-to-Satisfy Provisions

Vic F1.1 Application

(1)

Performance RequirementsVic FP1.1 to Vic FP1.4 are satisfied by complying with Vic F1.2.

Vic F1.2 General requirements

(1)

The design, construction, installation, replacement, repair, alteration and maintenance of a roof drainage system must be in accordance with AS/NZS 3500.3.

Vic Part F2 Surface and subsurface drainage systems

Introduction

This Part sets out the requirements for the design, construction, installation, replacement repair, alteration and maintenance of any part of a surface drainage system to the point of connection.

Explanatory information:

Explanatory information:

Objective

Vic FO2

The Objective of this Part is to—

  1. safeguard people from illness, injury or loss (including loss of amenity) due to the failure of a stormwater drainage installation;
  2. ensure that a stormwater drainage installation is adequate; and
  3. conserve water and energy; and
  4. safeguard the environment; and
  5. safeguard public and private infrastructure; and
  6. ensure that a stormwaterdrainage installation is designed and is capable of being maintained so that throughout its serviceable life it will continue to satisfy Objectives (a) to (e).

Functional statements

Vic FF2.1

Buildings and their surroundings are to be provided with a surface drainage and subsurface drainage installation and be constructed in such a manner as to provide protection for people, property and the environment from the adverse effects of stormwater.

Performance Requirements

Vic FP2.1 Surface drainage systems

(1)

A surface drainage system must dispose of stormwater flows from rainfall events having an average recurrence interval appropriate to:

(a)

The importance of the building

(b)

The severity of potential damage to property, loss of amenity, illness or injury that would result from the failure of the system.

Vic FP2.2 Design, construction and installation

(1)

A surface drainage installation must avoid the following:

(b)

Damage from root penetration, superimposed loads or ground movement.

(c)

Entry of sewage and/or liquid trade waste.

(d)

Entry of stormwater into a sanitary drainage.

(e)

Damage to the Network Utility Operator's drainage system

(f)

Foul air and gases accumulating in the stormwater system.

(g)

Loss to buildings or property.

(2)

A surface drainage installation must ensure the following:

(a)

Access for maintenance and clearing blockages.

(b)

Stormwater is transferred to a point of connection.

Verification Methods

There are no Verification Methods in this Part.

Deemed-to-Satisfy

Vic F2.1 Application

(1)

Performance RequirementsVic FP2.1 to Vic FP2.2 are satisfied by complying with Vic F2.2.

Vic F2.2 General Requirements

(1)

The design, construction, installation, replacement, repair, alteration and maintenance of surface and subsurface drainage systems must be in accordance with AS/NZS 3500.3.