As you know, the sewer network is designed to drain water used for household purposes. Domestic sewerage is a network of pipelines that are connected to sinks, toilets, bathtubs and other equipment. To organize such networks, cast-iron or plastic pipes, as well as their combinations, are traditionally used. Next, the replacement of sewage using PVC pipes will be considered. Outflow pipes from sinks have a diameter of 50 millimeters, and from toilets - 100 millimeters.
It is worth saying that if the plastic sewer began to leak after 5, and not 50 years, then this is due solely to errors in its replacement.
If it happened that the plastic sewer leaked not after 50 years, but after only 5, then it is usually not the pipes that are to blame, but the errors associated with the installation process. Since the installation technology implies compliance with very specific rules, pipelines assembled with errors cannotlast a long time. Before installing the pipes, they should be washed from the applied dirt and dust, then grease the seal with petroleum jelly, and then remove a small chamfer on the pipe that is being inserted.
So, the replacement of sewers requires compliance with very specific rules. Typically, polymer pipes are made of polyethylene, polypropylene or PVC. The second and third types are the most common. At the same time, there are certain standards for each material, since they have different characteristics, and here the wall thickness acts as the main parameter. In most cases, water enters the sewer, the temperature of which does not exceed 95 degrees, so the pipes must be designed for use in this mode. While polypropylene is very resistant to temperature, they have a higher rate of linear expansion, which is not very good for sewer pipes.
Replacement of sewerage begins only after all the necessary strobes have been completed, recesses have been made in walls and ceilings, holes have been made, and work associated with open fire has been completed. Installation usually begins with the release, after which the riser is assembled from the bottom up and the taps are installed. The funnels are usually directed against the flow, and the slopes must be observed as strictly as possible.
Replacement of sewer pipes should be done with special attention to the supports and fastening of PVC pipes. Open pipes should be supported as often as possiblefor example, on horizontal ones - after 40 centimeters, and on vertical ones - after 100 (usually they are placed under the base of the bell). A prerequisite is the use of plastic or rubber gaskets between the pipe and the metal clamps of the supports. Replacing the sewer riser also requires special attention, as well as compliance with established norms and rules that do not allow the entire structure to deform due to temperature differences.
In places where pipes penetrate various building structures, they need to be wrapped in two or three layers of tulle or glassine, and sealed with cement for the entire depth of the hole. After finishing work, you can install plumbing equipment.
Now you know how to replace the sewer.
