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Soakaways

Soakaway Crates Features & Benefits

Soakaways are a step forward in drainage technology, replacing traditional inefficient soakaways filled with hardcore and building waste and providing a safe and intelligent solution to rainwater management. The void ratio of a Rainsmart Soakaway is 95% - this means that 95% of the total soakaway space is used to hold rainwater.

Each individual Rainsmart Double module (there are 4 per cubic metre) holds 246 litres of rainwater. Polystorm water crates (5 per cubic metre) can hold 190 litres of water. The Aquavoid Crates have a holding capacity of 316 litres (3 per cubic metre). A 1 cubic metre soakaway is generally sufficient to drain an average roof area of 50sq metres in normal soil situations.

Soakaway crates have very high load bearing capacities and can installed under driveways and car parks. Our Rainsmart Ellipse crates have a vertical crush load capacity of 24 tonnes and an industry leading lateral load capacity (side loading) of 18 tonnes. Our heavy crate systems have a vertical load capacity of 65 tonnes!

Flat Pack Option

Our Rainsmart soakaway crates are available in a flat pack option for assembly on site. A standard 1 cubic metre soakaway should take around 10-12 minutes to assemble, the only tool required is a rubber mallet which we supply as part of the kit.

Flat Pack soakaways are slightly more cost effective as they are easier to and handle and transport. They are ideal for both large and small sites where space is at a premium.

Ellipse Double Soakaway Crate

Versatility of Soakaway Crates

The modular nature of soakaway crates helps builders and architects to create soakaways in a variety of shapes and designs, from shallow installations to soakaways that need to be installed in tight spots. You can even arrange the modules in a corner layout if you are very tight for space.

The outward facing surfaces of the crates should be wrapped in geotextile membrane to stop soil from entering and clogging up the system.

In order to form a 1 cubic metre soakaway (1m square x 1m deep) you would need 5 Polystorm crates, or 3 Aquavoid Crates.

Environmentally Friendly Soakaway Systems

Our Rainsmart Soakaway modules are eco-friendly, being made from recycled polypropylene. Well designed soakaways enhance water quality and play a crucial part in recharging groundwater supplies.

Lightweight and Quick to Install 

The crates are lightweight and can be installed by unskilled labour if required, without the need for heavy plant on site.

Soakaway Crate Connections

Our Rainsmart crates have a 160mm open pipe entry point. 110mm pipes simply rest on the bottom of this opening and we recommend that the pipe is inserted approximately 150mm into the opening. Geotextile membrane should be installed over the opening first and then a small cross should be cut in the membrane at the entry point with a sharp knife. Carefully peel back the membrane, insert the pipe and tape the membrane around the outside of the pipe for a clean joint. Pipe entry points do not affect the structural integrity of the soakaway in any way.

Polystorm and Aquavoid crates have knockout sections along the side to accommodate the incoming pipes. The process for cutting and taping the membrane around these knockouts is the same as for the Rainsmart crates. 

Delivery of your Soakaway Crates

Please note that that our pre-assembled soakaways crates incur an additional £10 delivery charge due to their bulky nature. No additional charge is made for flat packed soakaway deliveries.

Modern soakaways are modular structures built using plastic water crates or cells. They have an extremely high void ratio, allowing them to maintain their structural integrity whilst holding large amounts of water. Soakaways are generally used to dispose of rainwater on most new build projects, both domestic and commercial. Read more about Soakaways

Building Regulations requires that rainwater from the roof of a building or from a paved area may either be gathered for re-use or be discharged into one of the following, listed in order:

(a) an adequate soakaway or, where that is not reasonably practicable,
(b) a watercourse (such as a ditch, stream or river); or, where that is not reasonably practicable,
(c) a sewer.
 
Aquavoid, Polystorm and Polystorm Lite systems are lightweight modular water storage cells with a high void ratio that can be used to create soakways in residential, commercial, industrial and retail applications.
 
Our Aquavoid Crates hold 333 litres (0.333 cubic metres).
 
Each individual Polystorm water crate can hold 190 litres of water (0.19 cubic meters). 1 crate should be used for every 10sq metres of roof to be drained. The cells are assembled together to form a structure of any shape or size to hold water from roofs, gutters and land drains.
 
The outward facing surfaces of the crates should be wrapped in non-woven geotextile membrane to stop soil from entering and clogging up the system.
 
In order to create a  soakaway that measures 1 cubic metre (1m square x 1m deep) 3 Aquavoid Crates would be needed. If using the Polystorm crates you would need to use 5 crates. This would be sufficient to drain an average roof area of 50sq metres.
 
The crates are interlocking and have knockout sections along the side to accommodate the incoming pipes.

For further details including explanatory videos on soakaways please visit our Guides & Tips section

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Installation & Maintenance

Building Your Soakaway - Key Points

Building Your Soakaway - Key Points

Once you have bought your soakaway set, the real fun starts. Its time to begin the installation. Take a look at what you need to consider.

Building Your 65 Tonne Heavy Soakaway Crate (Video)

Building Your 65 Tonne Heavy Soakaway Crate (Video)

Our Rainsmart 65T Heavy crates are available flat-packed for building on site. Watch our video to see how they go together.

Shallow Soakaway Crate Assembly Instructions

Shallow Soakaway Crate Assembly Instructions

Assembly instructions for your Rainsmart Ellipse Shallow Soakaway Crate. View information sheet and read installation guide.

65 Tonne Heavy Soakaway Crate Assembly Instructions

65 Tonne Heavy Soakaway Crate Assembly Instructions

Assembly instructions for your 65T Heavy Soakaway Crate System. Take a look and download PDF document.

Building Your Ellipse Soakaway Crate (Video)

Building Your Ellipse Soakaway Crate (Video)

Our Rainsmart crates are available flat-packed for easy assembly on site. Watch our video to find out just how easy they are to build.

Building Your Shallow Soakaway Crate (Video)

Building Your Shallow Soakaway Crate (Video)

Our Rainsmart crates come flat-packed for easy assembly on site. Watch our video to find out just how easy they are to build.

Connecting Your Soakaway Sets Together

Connecting Your Soakaway Sets Together

This short video from the PBSL Group explains how best to connect plastic soakaway crates together

Ellipse Soakaway Crate Assembly Instructions

Ellipse Soakaway Crate Assembly Instructions

Assembly instructions for your Rainsmart Ellipse Double Soakaway Crate. View information sheet and see installation guide.

Soakaway Sets – Clipping the Crates Together

Soakaway Sets – Clipping the Crates Together

This video demonstrates how and where to place the clips depending upon the layout that you choose for your Aquavoid soakaway.

Installing Plastic Soakaways

Installing Plastic Soakaways

Not quite sure how to correctly install a soakaway system? This article has you covered with everything you need to get set up.

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