Of cobblestones or

So that the earth does not crumble from the walls of the well, reinforced concrete rings are installed in it. Drainage is laid on the bottom of the pit: first, a layer of cobblestones or broken brick is poured, and then a layer of crushed stone. For a drainage, you can take modern PVC pipes with a diameter of 200 mm. They are necessarily laid under the slope to the sewer well. The slope should be +1º for each meter of the pipeline.