Installation of sewer pipes
Sewerage – one of the most important objects of any apartment or cottage. Thanks to the installation of sewer pipes, water does not stagnate in the bathtub, sink or toilet, but flows freely away from the apartment or cottage. For the successful functioning of sewer pipes, it is necessary not only to select the right materials, but also to carry out installation in compliance with all the necessary requirements for the sewer system. Properly performed installation of sewer pipes will allow the entire sewer system to reliably serve for many years. Modern sewer systems are almost entirely made of plastic, which ensures the complete absence of corrosion. The only malfunction that can occur from time to time is the formation of plugs in the system. Errors in the installation of the sewer system can lead, in addition to the formation of plugs and unpleasant odors, to noise in the operation of the sewer or the suction of water from the siphons.
Diameter and slopes in the sewer system
Wastewater moves through pipes by gravity, therefore, laying sewer pipes with your own hands is carried out at a certain angle from the device to the drain pipe, and then to the street collector or outdoor tank. Such a slope can reach 2-15%, which means the need for a difference in the height of the pipe between its initial end and the final end for each meter of pipe of 2-15 cm. It is important to correctly select the diameter of each type of pipe to ensure the free flow of wastewater containing both liquid and solid particles.
Calculation of the diameters of sewer pipes depending on the sanitary equipment connected to them:
- For connecting a bidet or washbasin – 32-40 mm
- For connecting a bath or sink – at least 50 mm
- For use as a riser (without connecting a toilet) or connecting several sanitary appliances – 70-85 mm
- For use as a riser, drain pipe or toilet connection – at least 100 mm.
When installing a sewerage system, any changes in the direction of pipe laying are made at an angle of more than 90°. Pipes used to connect plumbing fixtures to risers are connected to them at an angle of 45° or less.
The ventilation pipe, equipped with a deflector at the end, is an integral part of the sewer system, connecting the interior of the system with the atmosphere. It is arranged in order to eliminate pressure changes when drains flow in the system, as well as to carry out its ventilation.
This prevents the creation of a vacuum and the suction of water from the siphons located above, even in cases where the entire cross-section of the pipe is blocked by drains. The installation of sewer pipes is a responsible undertaking, so it should be entrusted to qualified specialists with the necessary experience and all the tools necessary for proper installation.
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