A concrete stormwater pit is a water collection, storage, and drainage system that collects runoff stormwater to divert it away from roadways, pathways, and other public spaces. It functions as a safe way to remove water from areas where hazardous build-up can occur, limiting risk of injury or complete flooding.

When lengthly periods of rainfall occur and there’s nowhere for it to go, you end up with waterlogged roadways and paths – parks under water and creeks overflowing. And while big puddles are fun to drive through or splash in, collected water poses a safety risk to anyone in the area. Stormwater drainage pits have been used across Australia to limit build-up and divert water to appropriate areas the safe and secure way. 

Typical concrete stormwater pit sizes in Australia vary based on factors like local regulations and intended use. Some common sizes include:

1. Residential Areas: 600 mm x 600 mm x 600 mm to 900 mm x 900 mm x 900 mm.
2. Commercial Areas: 1200 mm x 1200 mm x 1200 mm to 1800 mm x 1800 mm x 1800 mm.
3. Industrial Areas: 1800 mm x 1800 mm x 1800 mm to 2400 mm x 2400 mm x 2400 mm or larger.

Specific project requirements and local regulations should be considered when determining stormwater pit sizes. Depending on your local council and size requirements, concrete stormwater pits may require a unique sizing. We encourage you to consult local authorities or engineering professionals.

A riser is designed to increase the depth of concrete stormwater pits. They are available from a range of sources, including Manhole Form Hire, and are light weight and easy to install. Pit risers are ideal for increasing the depth of any concrete pit boxes, allowing you the customisability you need for your project.

By incorporating a stormwater riser, you can enhance the capacity of the pit to handle larger volumes of stormwater runoff, improving overall drainage efficiency. These risers offer a convenient solution when you need to make alterations to your stormwater drainage pit.

A rainwater pit, also known as a rainwater harvesting pit or a rain garden, is designed to collect and store rainwater for various uses, such as irrigation or non-potable water needs. It’s an excavated pit or basin that captures rainwater from rooftops or paved areas and allows it to drain through into the ground. Rainwater pits often use permeable materials, such as gravel or porous concrete, to facilitate water absorption into the soil.

A rainwater pit can also sometimes refer to a stormwater drainage pit, as people often confuse the two terms. But the two serve different functions.