FlowBlock™ Heavy modular water storage cells have a high void ratio. They are suitable for creating non-blocking, free-flowing underground storage tanks and soakaways, for use in trafficked areas and heavy-duty applications.
The cells are manufactured from polypropylene and have a strong, robust construction, with a high compressive strength. They can retain surface water runoff below ground and release it at a predetermined rate, or facilitate the infiltration of surface water into the ground.
FlowBlock™ Heavy systems can be easily assembled on site by stacking and linking the cells together, using the shear connectors provided. The interconnecting structure gives the system greater stability.
Large modular tanks can be created and easily configured to suit different sites. The finished assembly is wrapped in either a geotextile or a geomembrane, depending on the application, and connected to the drainage system.
FlowBlock™ Heavy systems support the achievement of SUDS, and can reinforce planning applications where this is a particular consideration. They are BBA certified and environmentally friendly.
The cells are manufactured from polypropylene and have a strong, robust construction, with a high compressive strength. They can retain surface water runoff below ground and release it at a predetermined rate, or facilitate the infiltration of surface water into the ground.
FlowBlock™ Heavy systems can be easily assembled on site by stacking and linking the cells together, using the shear connectors provided. The interconnecting structure gives the system greater stability.
Large modular tanks can be created and easily configured to suit different sites. The finished assembly is wrapped in either a geotextile or a geomembrane, depending on the application, and connected to the drainage system.
FlowBlock™ Heavy systems support the achievement of SUDS, and can reinforce planning applications where this is a particular consideration. They are BBA certified and environmentally friendly.
Key data
| System type | Cellular |
| Functions | Stormwater infiltration; Stormwater storage |
| Material | Polypropylene |
| Unit dimensions (mm) | 1000mm long, 500mm wide, 400mm high |
| Unit weight (kg) | 9kg |
| Capacity (m3) | 0.2 |
| Void ratio (%) | 95 |
