Continuously expanding urban development increasingly runs into difficulties as regards handling of rainwater coming from hard surfaces and building roofs. Small capacities of the existing sewer systems, the necessity of retaining rainwater in in the place of landof its incidence and, last but not least, the legal regulations connected with this, require adequate technical and economic suitable and advantageous solutions…
Continuously expanding urban development increasingly runs into difficulties as regards handling of rainwater coming from hard surfaces and building roofs. Small capacities of the existing sewer systems, the necessity of retaining rainwater in in the place of landof its incidence and, last but not least, the legal regulations connected with this, require adequate technical and economic suitable and advantageous solutions.
Such problems can be treated by constructing of soakaway/infiltration systems or slow-down retention spaces. In most cases, these problems limit further development of the relevant territory.
Conventional solution: water accumulation in open polders, concrete tanks or cesspools, or underground gravel spaces.
New progressive systems: plastic tunnels For several years, plastic constructions of various designs (such as accumulation spaces for excessive rainwater retention) are used for handling od rainwater in the Czech Republic as well as abroad.
Advantages of the AS-KRECHT OPTIMAL system:
AS-KRECHT OPTIMAL is an accumulation & draining tunnel-shaped system consisting of lightweight plastic and semi-circular compartment(s) closed with front covers at both ends. By this, an underground large-capacity space is created suitable for accumulation and gradual soakaway of rainwater from hard surfaces and other areas into the ground.
The tunnel-shaped semi-circular compartments of AS-KRECHT OPTIMAL dispose of 100% storage capacity and in a comparison with gravel this system represents savings of more than 2/3 of the excavation volume. Rainwater can thus freely infiltrate through the bottom into the ground.
Both front covers are fitted with offsets for cutting of openings for inlet or outlet; they are designed for connections of DN250 pipes. Merely with the three individual components (semi-circular tunnel parts, front and end covers of sections), it is possible to create a stable and spacious system with minimal construction costs. The system is very compact and lightweight, so the transport costs are minimal.
Specifications:
Mechanical properties (load-bearing at min. overburden height):
