Drening is a modular element made from recycled plastic, designed for the construction of underground basins intended for on-site stormwater management. The system enables rainwater to be stored, infiltrated, or attenuated directly in the subsoil, contributing to hydraulic invariance and flood prevention.
Manufactured from high-performance recycled polyethylene, Drening provides a useful volume of 310 liters, ensuring exceptionally high storage capacity relative to the excavation volume. Its semi-cylindrical geometry leverages the structural arch principle, delivering high resistance to both vertical and horizontal loads.
Thanks to certified mechanical performance up to class SLW 60 with only 125 cm of cover, Drening can also be installed beneath trafficked areas subject to heavy loads, making it suitable for urban, residential, and infrastructure applications.
Drening is particularly recommended for installations in areas requiring large infiltration surfaces. The system consists of a sequence of interconnected tunnels completed with end-cap elements.
With a useful volume of 310 liters, Drening maximizes storage capacity per cubic meter of excavation. This reduces construction depth, minimizes material handling, and optimizes overall project costs.
The semi-cylindrical shape creates a structural arch that efficiently distributes loads. The system is certified up to class SLW 60 and is suitable for installation beneath heavy-traffic areas, such as parking facilities and industrial zones.
The modular elements enable the construction of basins of virtually any plan dimension. The flexible configuration allows the system to adapt to various design constraints and excavation geometries.
Installation is carried out entirely dry, through simple placement and connection of modules. Single-level installation is facilitated by the lightweight modules (only 11 kg), reducing construction time and simplifying operations.
Drening includes integrated provisions for vertical pipes that ensure proper basin ventilation. This feature improves hydraulic performance and guarantees optimal system functionality.
The system is designed to maintain stable mechanical and functional performance over time, with a service life exceeding 50 years, even under demanding operating conditions.
Made from 100% recycled plastic, Drening is EPD-certified and contributes to reduced environmental impact. Its high storage efficiency also limits excavation requirements and emissions associated with traditional solutions, making it ideal for CAM, LEED, and BREEAM projects.
The stackable design allows large product volumes to be transported with fewer trips, generating significant economic and operational advantages on-site.
The Drening cap is the only one that permits both the entry and the exit basin closures. It has to be hooked by interlocking, In the case it doesn’t hook at one side, rotate it by 180° and try to hook it again. Each cap is made to be perforated and the pipes standard diameters are indicated with a stamp. The pipes can be inserted both at the top and at the bottom of the cap.
Drening can be installed below any surface: from green areas to heavy traffic zones, provided it is set up with the correct stratigraphy. Installation below buildings is not recommended.
The authorities in many areas set the maximum flow rate of water that can be released into the sewer system and these limits are usually very restrictive. A properly sized DRENING basin permits the disposal of water in accordance with the provisions, preventing sewer obstruction and surface flooding. By infiltrating the water into the subsoil, the natural hydrological balance is restored, contributing to the preservation of groundwater.
