AS 3500.3 Plumbing and Drainage – Stormwater Drainage

AS 3500.3 is an Australian Standard that specifically deals with plumbing and drainage, focusing on the topic of “Stormwater Drainage.” The full title of this standard is “AS 3500.3 – Plumbing and Drainage – Part 3: Stormwater Drainage.” This standard provides guidelines and technical specifications for the design and installation of stormwater drainage systems in buildings and structures. Here’s an overview of the key points covered in AS 3500.3:

1. Scope: AS 3500.3 outlines its scope, which includes requirements for stormwater drainage systems in both residential and commercial buildings. It covers the design, construction, and installation of these systems.
2. Definitions: The standard provides definitions of terms and concepts related to stormwater drainage to ensure clarity and consistent interpretation.
3. Design and Sizing: AS 3500.3 offers guidance on the design and sizing of stormwater drainage systems. It covers factors such as catchment areas, rainfall intensity, and hydraulic capacity considerations.
4. Materials and Components: The standard specifies the materials and components to be used in stormwater drainage systems, including pipes, fittings, and other related elements.
5. Installation: AS 3500.3 provides instructions for the proper installation of stormwater drainage systems, including requirements for pipe support, connections, and jointing techniques.
6. Testing and Commissioning: The standard outlines procedures for testing and commissioning stormwater drainage systems to ensure they function as intended.
7. Maintenance and Compliance: AS 3500.3 includes recommendations for the ongoing maintenance of stormwater drainage systems and emphasizes the importance of compliance with relevant regulations and local building codes.
8. Drainage of Roofs and Paved Areas: The standard covers the drainage of roofs and paved areas, addressing how stormwater should be collected and managed from these surfaces.
9. Overflow Provisions: AS 3500.3 includes guidelines for overflow provisions to prevent stormwater systems from becoming overwhelmed during heavy rainfall.
10. Environmental Considerations: The standard considers environmental aspects, such as the treatment of stormwater to manage pollutants and minimize the impact on the environment.

AS 3500.3 is a critical standard for plumbers, builders, and engineers involved in the design, construction, and maintenance of stormwater drainage systems in Australia. It ensures that these systems are effectively designed, installed, and operated to protect properties from water damage and prevent water pollution in accordance with local regulations and environmental standards. It’s essential to use the latest version of this standard to ensure compliance with current industry practices and building codes.