Water Retention Box WRB 80F
Water Retention Box made of recycled HDPE material. With high temporary and possibly permanent retention volume in combination with a Flow Control System for specific regulation of water discharge and/or water storage.
- For temporary and/or permanent storage of rainwater with regulated water discharge through a Flow Control System
- With Capillary Columns to transport stored rainwater from the drainage level into the substrate layer and to increase evaporation (accessories)
- Flow Control-independent water storage of 3 l/m² or 6 l/m², depending on the laying side
- With freely flowable structure for quick distribution of rainwater within the retention room
- Low delivery costs due to delivery in open state, laying state folded together
- Suitable for inverted roofs (when used on inverted insulation, no permanent water storage is possible)
- Has a European Technical Assessment (ETA-13/0557) as part of the Optigrün system solutions
- For temporary and/or permanent storage of rainwater with regulated water discharge through a Flow Control System
- With Capillary Columns to transport stored rainwater from the drainage level into the substrate layer and to increase evaporation (accessories)
- Flow Control-independent water storage of 3 l/m² or 6 l/m², depending on the laying side
- With freely flowable structure for quick distribution of rainwater within the retention room
- Low delivery costs due to delivery in open state, laying state folded together
- Suitable for inverted roofs (when used on inverted insulation, no permanent water storage is possible)
- Has a European Technical Assessment (ETA-13/0557) as part of the Optigrün system solutions
| Material | Recycled HDPE |
| Nominal thickness | approx. 80 mm |
| Grammage (laying state) | approx. 3.6 kg/m² |
| Retention volume | approx. 72 l/m² |
| Cavity volume | approx. 90 Vol.% |
| Water discharge capacity (DIN EN ISO 12958) | i = 0.01 (= 1% roof pitch): 2.5 l/(m*s) |
| Compressive strength (DIN ISO 25619-2) | approx. 100 kN/m² |
