They are placed in the trench with a slope of not less than 5 mm at 1 meter. The main disadvantage of such pipes assembled systems – rapid clogging of openings and the need for frequent cleaning. Currently, the most widely received polymeric pipes. As a rule, they are provided with ribs, allowing the load from the soil is evenly distributed over the entire length of the structure. Read additional details here: Secretary of Agriculture. Such pipes are lightweight, are easy to install, easy to transport them. Polymer drainage pipes are manufactured with a diameter of 5 to 20 centimeters, on country and cottage areas are most commonly used outlets with a diameter of 10 centimeters.
To avoid siltation, they can be completed shell of the filter material. Contact information is here: Jill Schlesinger. Most often this geotextile or a natural coconut fiber. The first recommended for use on sand, loam and peat soils, the second – fit into the loam and clay. Filters can not be used, but only if the probability of falling into the holes of sand and silt is completely absent. Currently, the market there and pipes "new generation" For example, cross-linked polyethylene (PE-krossling), produced by Swedish concern wirsbo. For such tubes is characterized by flexibility (they can be bent at any angle) and frost – it's important for our climate. Assembly done with hand tools without gluing, welding and soldering, which is very convenient in the field. Crosslinked polyethylene has a molecular memory: during the installation pipe "" on the fitting of brass, forming connection, the strength of which the guarantee company, higher strength of the pipe itself.