AS/NZS 3500.3:2025
Plumbing and drainage, Part 3: Stormwater drainage
Standards New Zealand
Pick a clause from the contents on the left to see community comments and worked examples, or jump into a section below.
Sections
- 1Scope and general
- 2Materials and products
- 3Roof drainage systems — Design
- 4Roof drainage systems — Installation
- 5Surface water drainage systems — Design
- 6Surface and subsoil drainage systems — Installation
- 7Surface water and subsoil drainage systems — Ancillaries
- 8Pumped systems
- 9Site testing
- 10Siphonic drainage systems
- 11Rainwater harvesting systems (New Zealand only)
- A(informative) Site-mixed concrete for minor works
- B(informative) Stormwater drainage installation plans
- C(informative) Guidelines for determining rainfall intensities
- D(normative) Rainfall intensities for Australia
- E(normative) Rainfall intensities for New Zealand — 10 min duration
- F(normative) Overflow design for eaves gutters
- G(informative) General method for design of eaves gutter systems — Example
- H(normative) Box gutter systems — General method, design graphs and illustrations
- I(informative) Box gutter systems — General method — Examples
- J(informative) Surface water drainage systems — Nominal and general methods — Examples
- K(informative) Example calculation — Pumped system
- L(informative) Subsoil drainage systems — Design
- M(informative) General information
- N(informative) Operation of siphonic roof drainage systems