Concrete rings for sewerage - ways of laying
The simplest and most effective option for burying concrete rings is to take a shovel, put the first section of the future well in the right place, climb inside and begin digging a pit, gradually digging under the surrounding walls. As you deepen the well, the ring will go down with you.
When it completely goes underground, the next ring is rolled and is stacked on the first one. Again we go down into the pit and take up the shovel, which in no case is recommended to be shoved under the concrete sections where the soil holding them is almost gone, the ground is raked carefully.
The weight of the ring is one meter in diameter with a standard wall thickness of 600 kilograms.
Another method of installation involves the use of heavy equipment, namely, a crane. To begin with, digging a pit of the right size, then we go and buy rings that will fit into the prepared pit, otherwise we'll have to extend the pit after the call of the crane, so that the rings under the sewerage are still there.
And this will mean extra costs for the operation of heavy equipment, the payment of which usually happens on an hourly basis. If the pit and the rings coincide, we simply catch them one by one and lower them down, trying to clearly align the walls.
Rings for sewer are plastic, what are they good for?
Unlike concrete wells, made up of segments of enormous gravity, plastic sewer rings benefit from a relatively small weight. What is it worth to lay a concrete fragment of the well, having pushed it to the dug hole and gently knocking down, trying to get clear on the previously immersed circle in the ground.
Polyethylene, from which lightweight rings are made for sewerage, allows the laying of the well segments by the forces of one person , especially if the rings are joined by special locks.
In some cases, laying a plastic well for sewage can cost you a certain cost if you need to use welding for it. And this method of connecting segments among themselves is actively used in the installation of plastic sewage systems.
At the same time, taking into account the specificity of the material, it is necessary to observe a certain technology of welding connection with preliminary degreasing and control of the working temperature of extrusion welding. But the result exceeds expectations - sealing joints is excellent.
Reinforced concrete rings for sewage or plastic?
On the one hand, reinforced concrete inspires confidence - thick walls, excellent resistance to high loads, water resistance. However, given the need to get pipes through reinforced concrete rings for wells, it is worth considering whether too much labor will go to the sewage system.
After all, it is necessary to correctly calculate the perforation of the walls of the rings, to provide additional sealing at the points where pipes are put into the well. Not to mention the fact that ensuring the sealing of the joints also requires the right approach( gaskets, coating of slots, hydrophobization and plasticisation of the coating itself).
With regard to plastic as a material for the well segments, everything is somewhat simpler here. First, the PVC rings are produced not only with monolithic walls, but also with the outlets, where pipes can be connected. This greatly facilitates the task when installing well elements.
Secondly, it is much easier to provide a seal, as already mentioned earlier. And, at last, the ladder so necessary for inspection of a well is fastened from the inside of rings from PVC much easier, than скобы to concrete walls. The only drawback of plastic - a higher price than concrete.