Stone wool can absorb up to 95% of its weight in water
550.000 l water absorption in 30 minutes
Water released within 24 hours
Ronald Pluijmakers. Projectmamanger at Royal HaskoningDHV about his experience with Rockflow:
“My colleagues of the department ‘Water’ were collaborating with Lapinus in the development of Rockflow for application in the public space. I heard about their involvement at around the same time they were looking for a suitable pilot project. After learning about Rockflow I was quickly convinced of the benefits and felt it would be a perfect fit with the project at the elementary school in Schimmert which I was working on at the time. I pitched the idea to the municipality and manged to convince them rather quickly. Together we made it into a very successful first pilot."
Jos Last, Manager Project design and preparation at the Municipality of Nuth:
Looking purely at the hard surface of the school it may not seem like a huge amount, however it turned out to be around 5000 m2. Together with the surface area of the playground it amounts to 12000 m2. The space underneath the playground alone was too small to create enough buffer capacity. This meant we also had to include the available volume below the driveway towards the school as well. In this thigh space we needed a solution that offers enough flexibility. Stone wool can easily be adapted to the space available and is very easy to handle; This is one of the biggest benefits of Rockflow if you ask me."
“It collects the water into it. Once the rain has calmed, the water flows through the buffer back into the sewer. Perfect System!”
“It was very disruptive. Especially with heavy downpours, it used to be really awful here. All the rainwater flowed into the street and houses”
|Location||Schimmert, Municipality Nuth, The Netherlands|
|Installation date||July 2017|
|Application||Low density > Pedestrian area|
|Design||45 mm in 30 min.|
|Catchment area||12.000 m2|
|System size||550.000 liter + 50% extra|
|Project volume||820 m3|
|Rockflow elements||8000 pieces|
How the municipality of Maasgouw solved a water management problem
Swales gain valuable urban functions with Rockflow
Rockflow is an innovative water management system that buffers the rainfall from extreme showers quickly and effectively for it to be subsequently infiltrated into the soil or discharged to the sewer system.