The system is suitable for all types of pedestrian walkways and shared zones, whether they are made of paving blocks, planks, stone slabs, special grass surfaces or water-permeable mineral surfaces.
In such systems, drainage elements with improved compressive strength parameters and high drainage capacity should be used. Also remember to use appropriate filter non-woven fabrics that can withstand contact with mechanically compacted aggregate. The height of the drainage element should be selected according to the slope of the surface on which it will be installed. Low-profile drains integrated in non-woven fabric, e.g. DBV 10, are used on the steepest slopes, e.g. downhill ramps. The drainage elements with a higher profile, e.g. FloraDrain FD 40, are used on flatter surfaces.
When connecting green and traffic areas, not only drainage and compression strength but also water retention capacity are important. The drainage proposed in this system, i.e. Stabilodrain SD 30, is an extremely stable, high pressure resistant drainage element that is quick and easy to lay. It ensures long-term functionality and water drainage (laid with diffusion holes downwards) and water storage (with diffusion holes upwards).
Unlike green roofs or green roof portions, which delay or hold back water run-off, the roofs with pedestrian walkways must drain as much of the rainwater from paved surfaces as possible in the shortest amount of time. The drainage points should be planned in such a way that they enable the drainage of both surface water and water which penetrates vertically through the base course to the waterproofing layer. It is worth using ZinCo linear drainage channels in these places. The inspection boxes should be installed above the roof drains responsible for collecting excess water from the roof, e.g. KS 30-B, with a lid allowing to cover it with material from the surrounding surface.
Particular attention should be paid to the substructure on which the walkways and roadways will be laid. It must be well compacted and permeable to water. This is especially important when using mineral and paved surfaces laid with use of small elements.
The laid surface angle always depends on the material to be used. The pavement surfaces should have a minimum slope of 2%, pavements laid on pedestals may not have a slope as water will flow out through the gaps between the pavement elements. Asphalt or concrete pavements should have a slope of at least 1.5%.
Many roof structures do not provide for the additional load of a pedestrian walkway substructure. A good solution in this situation is to use Elefeet adjustable system washers. The washers themselves are lightweight but very sturdy. The entire weight of the surface is distributed on the system pads and the water flows freely between the slits in the laid surface. There is still plenty of room under the surface, e.g. for cables, water pipes, etc.
A stable edging is just as important as a stable drainage element. Concrete or stainless steel elements guarantee visually appealing solutions. Installation of edgings on the drainage elements ensures uninterrupted water flow over the roof surface.
It is possible to develop the roof area by combining pedestrian and vehicular traffic routes with space for greenery. The key element then is to ensure that the drainage element has a high enough water storage capacity. Floradrain FD 40 or Stabilodrain SD 30 drain systems provide the necessary strength under walkways and roadways and, depending on the way they are laid, they will retain water or drain it completely.
