Storm water reservoirs connected to the drainage system that can collect 10,000 m³ of water during heavy storms, relieving the pressure on sewers. Buffered water is discharged into one of the main collectors in Brussels, half using a gravitational outlet, the other half using pumps.

An automated system has been fitted whereby the mechanical elements (pumps, mixers, rinsing system, …) can function entirely automatically and can be operated from the owner’s own offices. There is also a monitoring system allowing stream levels to be surveyed constantly from a distance.

Design:

• Length ±370m
• Breadth 8m
• Depth of 3.5 to 6m
• Underground, roofing plate is 1.5m below ground level
   

Construction method:

• Basin structure made of more than 1700 secant piles
• Concrete: 3500 m³
• Reinforcement: 620 tonnes
• HDPE pipes: 1000 m - diameters 400-350
• 2 pumps 35