Looking for the best stormwater retention management system that you can buy online? Here are some advices to pick the best water management system. Ideally, the size of a soakaway system is dependent on the available space, expected flow rate, and the type of soil. In most cases, you will require about three soakaway crates per a meter cubic. However, this does vary depending on the model and brand of the crate. You can find models that are smaller. These are ideal for small objects. In addition, they are quite convenient for transportation. For instance, it is easier to transport 20 small crates as compared to transporting 10 large ones. Remember that most soakaway crates are collapsible.

The size of the soakaway should be a minimum of 1m x 1m x 1m below the bottom of the incoming pipe. Other than that it depends on how much water the soakaway will be processing and the perculation rate of the surrounding soil – i.e. how quickly the water will soak into the soil around the soakaway. The hardcore (stone infill) should completely surround the pipe, and finish approximately 100mm above it. An impervious layer should then be placed on top of the stone, such as thick polythene, tarpaulin, or even a bed of concrete (A1 below). Topsoil can then be placed on top of this layer to restore the garden level (A below).

In the old days, a test pit was dug, and water poured into it and visually monitored to see if it drained away. The percolation test is still the best way to check the soil in your garden, but there is a calculation you can use which is more reliable than trusting your eyeballs. You should dig a 300 square millimetre hole 300mm below the lowest point of the proposed drainage pipe. This hole should be filled with water, and the time it takes for the water to drain away measured. This will provide you with a figure that can be used to calculate the required water storage volume for the soakaway.

Stable Design: Interlocks vertically and horizontally for maximum stability, avoid the whole system from floating. Fast Installation: The built-in socket and ports bring extremely convenience of quick installation. High Void Ratio: 96% void ratio providing greater water storage capacity with reduced excavation and disposal costs. High Compression Load: Resisting stretch and extrusion by fully utilizing triangle’s stability and round shape. Unique Columnar Construction: Adopt cylinder-shaped construction, suitable for non-trafficked, trafficked or heavily trafficked application. Structural integration: Distributing the loaded weight on to all the plates, fully utilized the effect of each plate. See extra info at Multi Functional Water Management System.