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Drening - 8 Pages

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Catalogue excerpts

Residential or industrial development makes land impervious to water, greatly increasing the complexities of stormwater management. Serious hydraulic consequences are created: the overload of existing sewage systems and ditches due to increased surface runoff rates causes a severe increase of riverflow peaks in urban areas. It also becomes necessary to catch and filter stormwater to tackle runoff pollution. Finally stormwater flow is becoming a major requirement to avoid extreme streamflow peaks following heavy rainfall DRENING8DRENING STORMWATER RETENTION AND STORAGE SYSTEM DRENING" is the solution...

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DRENING® APPLICATIONS DRENING": shopping centre and carpark Basins can be made under roads, parking lots and green surfaces at DRENING": rainwater reuse DRENING* used for rainwater collection, storage and reuse.

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DRENING® INSTALLATION INSTRUCTIONS m Create a washed gravel 20/40 bedding, 8 to 10 cm thickness. HI Lay the GEOPLAST DRENING® subdispersion chambers with the following properties: c. Resistance to compression for a total backfill thickness above DRENING® of 40 to 250 cm, equal to 150 ton/m2 d. Lateral infiltration surface of 2,800 cm2 for each element. m Close each row with the DRENING® caps and connect the water collection pipes of max. a 200 mm. m Allow for 30 cm gravel backfill all around the basin system. Cover with min. 15 cm of washed gravel dia. 20/40 mm, vibration compacted. Place a layer...

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At the beginning of a project it is necessary to evaluate: The surface of impervious land The waterflow that can be handled by the wastewater collection system within the given duration The amount of water that can be absorbed by the soil at the maximum rainfall rate Local rainfall frequency and intensity In locations with permeability (K) below 10"6 it is recommended to connect the system to a wastewater collection system. Should this not be possible it will be necessary to oversize the system. SOIL TYPE Clay loam Fine sand Heavy sand Fissured rock Example of size calculation with the DRENING®...

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DRENING" ADVANTAGES VS. TRADITIONAL SYSTEMS DRENING®: sanitary plumbing Whenever the connection to a sewage system is not desirable or possible the DRENING" system can be used for the treatment and subdispersion of wastewater. There can be single- as well as multiple-dispersion tunnels created using DRENING* elements. Ahead of the subdispersion basin a treatment tank will remove the solid part of the wastewater and uniformly distribute the liquid to the subdispersion Thanks to its infiltration characteristics DRENING* the task of designing a wastewater dispersion system is simple, making the realization...

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DRENING*: advantages vs. traditional systems ■ Increase of the infiltration volume and surface, as well as rate; ■ Reduction of the dig depth, thus increasing the safety distance from the groundwater; ■ Reduction of the gravel backfill volume; ■ Reduction of the dig length compared with the pipe and gravel system; ■ Increased air volume, required by aerobic microorganism to break down organic matter and avoid rot ■ Quick and easy to place without the need for a crane or a forklift truck; ■ DRENING" is made of regenerated HD PE (high density polyethylene) and has an excellent resistance to chemicals DRENING":...

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DRENING® TECHNICAL DATA (*) Polyetylene: Flexural modulus 780 N/mm2 - Tensile strength 22 N/mm2 - Coefficient of thermal expansion 0.2 mm/m/°C Via Martiri della Liberta, 6/8 § ° e-mail: geoplast@geoplast.it - www.geoplast.it

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