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Storm Crates For storm attenuation, infiltration or just as a soakaway Attenuation cells, (also known as Storm Cells, Soakaway Modules, and Storm Crates) are the modern equivalent of a soakaway. They allow surface water to be stored in one location and gradually released back to the ground, a bit at a time, at a pace the ground can handle, rather than in one sudden deluge, as happens during a storm or downpour. In effect, the transfer of water from the surface to the ground is attenuated, is slowed down and stretched out over a longer period. If you dump 1,000 litres of water onto a patch of ground in one go, unless you're on sand or gravel, it's unlikely the ground will be able to absorb all that water instantly: attenuation cells work by taking all the water as fast as it's delivered, returning what it can to the ground as quickly as possible, but storing the surplus until the ground is ready and able to absorb it. Attenuation cells are specially manufactured, modular cells that provide lots of space (void space, as it's termed) within a cheap, lightweight structure that is capable of supporting quite significant loads when buried. Some cells can be placedbeneath pavements and are strong enough to carry both foot and low-speed vehicular traffic. More details...

Price: £33.21

Product Details

Polystorm Soakaway System

The Polystorm soakaway system is a versatile, modern alternative to the traditional inefficient rubble-filled soakaway. Soakaways of any size or shape are easily constructed on site from a number of lightweight, load bearing, modular cells.

The modular nature of the system facilitates quick and easy assembly on site. Multiple configurations, of either attenuation or infiltration storage, can be formed from standard stock items.
Key Benefits 95% void ratio providing greater storage capacity and reduced excavation and disposal costs. Modular units allow flexibility of shape-ideal for shallow excavation systems, narrow strips, or use in restricted areas. Minimum 40 tonnes per square metre load bearing capacity for trafficked applications
Control of stormwater runoff from impermeable areas may be achieved in two ways a) Attenuation b) Infiltration By slightly differing the installation, Polystorm may be utilised to achieve both of the above control methods. The main difference between the two control methods is the geosynthetic material used to encase the Polystorm units.
Product Data


Unit type	Polystorm
Dimensions	1m x 0.5m x 0.4m high
Total volume	0.2m per cube
Unit weight	9kg
Cube storage system	0.19m (190 litres)
Surface area	45% perforated
Compressive strength	Minimum 40 tonnes per sq. metre