Geoplast Products


Rainwater accumulation and draining system and disposal of wastewater

DRENING is a sectional element for the creation of high capability dispersion and accumulation chambers. This is a valid alternative to rainwater drainage systems which were in use until today. Due to our area intense overbuilding, the need to control rainwater sub-dispersion has increased and the sewage networks have serious difficulties.


Installation Scheme

Drening Render

The DRENING system is exactly arranged to create underground retention ponds used for “in-situ” rainwater management: a valid element to install high capability dispersion and accumulation chambers.

This system can be used also for sewage disposal from settlements, which are not connected to the sewer system, and this is the ideal solution to deal with rainwater in car parks as it significantly reduces the water volume in the drainage system. Therefore, this subsurface irrigation system facilitates the infiltration in the soil preventing floods.

DRENING is easy and fast to install and its modular structure adapts to every available surface and guarantees minimally invasive interventions. Moreover, thanks to its high resistance, it can be installed in high traffic areas.

Our system main advantages are:

LIGHTWEIGHT: DRENING weight just 11 kg and can be moved manually without the need of mechanical devices.

FAST: Its lightweight and easy installation allow a fast and safe creation of the basin

RESISTANT: the arch structure of DRENING produce high mechanical resistance, which allows to place it also under high traffic areas

DRAINING: its high dispersion surface guarantees the fast and efficient disposal of the collected water

Installation Instructions

Drening Resistance


Where can you install drening?

Drening can be installed below any type of surface from the green area to an heavy traffic zone as long as it is put in place with the required placement stratigraphy.

Installation below builidings is not recommended.

Why use Drening if I can discharge the water in the sewage?

The authority of many zones requires a maximum water capacity that can be inserted through the net but usually limits are very restrictive. A DRENING properly sized basin, permits water disposal conforming to the regulations, avoiding net obstructions and preventing possible surface overflowings. Moreover, it is possible to put back the water in the subsoil to restore the hydrological balance and to contribute to the mantainance of aquifers.