The system of pipelines connected to sanitary equipment is called "internal sewage". Each building of a modern type provides for the arrangement of internal sewer networks. The purpose of the equipment is to collect waste water and divert it from the building to a centralized or autonomous sewage system.
Internal sewage in a private house. Arrangement
Laying an individual sewage system should begin with the preparatory work:
1. Compilation of communications.
2. Preparation of marking on the walls and floors of the building.
3. Preparation of recesses and channels for hidden wiring.
Pipes for assembling a house network fit cast iron or plastic. The diameter of the risers is usually 100 mm. With the same pipe diameter, the internal sewage system is equipped from the toilet to the entrance to the riser. From bathrooms, washing rooms, showers installed pipes with a diameter of 50 mm.
Domestic sewage. Mounting
It is recommended to carry out the sewage distribution inside the house after it has been equipped externally, with the plant in the house of the exhaust pipe (to the ground floor or to the basement room). In this case, the risk of inconsistency of the two networks is excluded. In the absence of such an opportunity, the installation of the system must begin, leaving a significant area not yet ready for release. Although any manipulation depends on the specific conditions. Adhering to such recommendations, it will be possible to connect communications into one common network without great difficulties.
Horizontal sections of the system should be laid strictly in a straight line, avoiding bias distortion. The direction of the pipeline can be changed using fittings. Vertical sections of the system are mounted without fractures in the sockets. If according to the scheme it is necessary to put the fittings, then the installation of the pipe is carried out with the part already inserted and fixed.
Setting the angle of the network on a horizontal surface is performed using a special tool (level).
The internal sewerage of an individual house with a right angle rotation in the floor structure is mounted from two plastic elbows with an angle of 45 degrees. You can also use cast iron bends in the amount of two pieces and an angle of 135 degrees. In order to eliminate the resulting blockages in sections of the sewer network, a plastic tee or a cast-iron oblique tee with an angle of 45 degrees with a plug is used.
The drainage pipes of the internal network in a private house located under the ceiling in the basement are connected to the risers by means of crosses and oblique tees.
During the discharge of drains, as a result of discharge in the sewer pipes, water can be sucked out from the sanitary equipment siphons into the sewer system. Such an action leads to the penetration of unpleasant odors into the room. In order to avoid a negative situation, a fan (exhaust pipe) should be installed. It is led to a height of 70 cm through the roof.
PVC inner drain
It is worth noting that when arranging a modern sewage system, most often the advantage is given to PVC pipes. They are of good quality, resistant to aggressive environments. Wastewater contains many aggressive chemicals. Therefore, it is recommended to purchase PVC material. The quality of the pipes ensures a long service life. High physical properties are manifested during a period of sharp temperature changes. In addition to these advantages, there are a number of positive qualities of PVC sewage:
1. Low coefficient of thermal expansion.
2. Low flammability, a tendency to self-extinguishing.
3. High level of noise protection.
4. Thermal resistance.
5. Durability (up to 50 years).
6. Convenience of installation.
7. Safety for human health.
Today, the use of PVC pipes is very wide. They are used both in multi-story construction and in private homes. Among other things, their cost is relatively small.