Polystorm Xtra modular geocellular structures can be used for the control and management of surface water. Polystorm Xtra is unique in that it has been designed to withstand vertical loads of up to 80 tonnes meaning it makes the perfect solution for attenuation or soakaway applications in heavy trafficked areas. Polystorm Xtra has a height of just 0.21cm which means it can also be used in installations which require low burial depths. Polystorm Xtra modular cells are assembled together to form a structure of any shape of size to hold water either from roofs, gutters or surface drains.
The modular structure can then be wrapped in an impermeable membrane (attenuation) or permeable membrane (infiltration) to control the surface water entering the tank. The Polystorm Xtra units are lightweight and easy to handle and have unique rounded corners to prevent punctures to the membrane during the installation process. With the use of a silt trap and Stormcheck Flow Control device, sediments can be removed before entering the tanks and then discharged at a set rate.
Polystorm Xtra can also be used in conjunction with Polystorm and Polystorm Lite to form a cost effective value engineered hybrid solution.
Key Benefits
Load Capacity
Maximum 80 tonnes per square metre load bearing capacity for use in deeper burial depths and heavily trafficked installations
95% void ratio
Providing greater water 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.
Lightweight yet robust
Excellent health and safety and installation benefits.
Cost effective
Especially when used as a hybrid, value engineered system.
BBA Approval Pending
Technical Summary
| Unit Type |
Polystorm Xtra |
| Product Code |
PSM3* |
| Dimensions |
1m x 0.5m x 0.21m high |
| Total Volume |
0.105 m3 per cube |
| Unit Weight |
6kgs** |
| Cube Storage System |
0.0986m (98 litres) |
| Surface area |
48% perforated |
| Compressive Strength |
Maximum 80 tonnes per sq metre |
| Maximum burial depth |
Heavy Trafficked – 4.85m ***
Light Trafficked – 5.3m ***
Non-Trafficked - 5.45 meters ***
| |
* Each unit includes 4 clips and 2 shear connectors
** Pallet weight dependant upon order quantity
*** in weak clay maximum burial depth should not exceed 1.5 meters. Do not install Polystorm Lite below water table. For installations deeper than the recommended 2 meters please contact Polypipe Civils Technical Team.