Rainwater: description, features of the device and recommendations

Rainwater sewerage is a complex of devices that collect, filter and further divert atmospheric moisture. It enters the filtration fields, reservoirs and special reservoirs. The task of this system is the elimination of excess moisture, which creates discomfort and destroys the construction, shortening the period of their operation. This applies to plants, which interfere with excess moisture on the site.

Description

Rainwater sewerage is a linear network that provides for the availability of standard elements like rainwater receivers, gutters and inspection wells. If it is a matter of rainwater receivers, then they look like pallets, funnels, and linear trays that collect excess water. Trays, pipes and troughs transport the liquid to a sand catcher, which represents a filtration device that pumps water into the pond or collector. Inspection wells are required to monitor the entire system. To prevent the network from becoming contaminated with plant fibers, debris and dirt, sand catchers and filters are necessary. All listed elements should be connected to each other in a single system, which operates on point or line technology. If the channels are located in the ground, pipes should be used for their construction. In the surface channels, gutters and trays of concrete, asbestos or plastics are mounted.

Collection of information before installation work

Before you will be equipped with rainwater, you need to collect certain information that will eliminate errors. This should include the data on the average amount of precipitation, which is recorded in a specific area. The master must find out how often the rains come, and also ask whether the snow cover is powerful. For a point type of sewage, it is necessary to know the drainage area, which is the roof area. It is not necessary to take the full value, only the value of the projection of the plane is required. If it is a linear system, the drainage area is the sum of the areas of the objects being processed. It is important to perform soil analysis, since the design uses the physical and mechanical characteristics of the soil on the site. It is important to consider whether there are underground communication systems in the territory.

Recommendations for laying channels according to depth

If you are going to settle down the rain drain, it is important to get acquainted with the information on the depth of the bookmark channels. Lay channels and trays out of pipes, taking a deeper look, taking into account the recommendations given for a certain region. In the middle zone, the rainwater drainage system is laid to a depth of 0.3 meters. This figure is true with a diameter of open trays and pipelines not more than 50 centimeters. If it is a question of pipes and trays with larger sizes, then it is necessary to go deeper by 0.7 meters.

For reference

Rain storm drainage should be located above drainage, if such a system is available on site. This feature should be taken into account when designing.

What else you need to know about the depth of the elements of the system

Due to the fact that earthworks are quite expensive, people who use professional installation services do not want to go too far into the ground. Even if the storm sewer system will be implemented on its own, it is not recommended to install it too deeply. Observation wells and sewers should not be located below the seasonal freezing level of the soil. They can be placed higher, but you will have to use thermal insulation material, a layer of crushed stone and geotextiles. If the burial is not too palpable, the laboriousness of the work will decrease. It should not be forgotten here that the channels that lead the water to collection and cleaning must be at an angle. This indicates the need to equip the input into the collection well below the level of the pipe or tray, one of which moves away from the intake.

Mounting technology

Sewage of rainwater is laid on the same principle as the conventional system of external sewerage. But if the house is not equipped with a drainage system, then it is necessary to begin with its arrangement. In the floors of the house, make holes for the rainwater receptacles. After installing the devices and fixing them on the bituminous mastic, the junctions should be sealed. At the next stage, sewage pipes are installed, all elements are attached to the structures of the house using clamps. Then you can proceed to work with the trays, if you decide to use the linear type of the system. When installing a point diagram, drain pipes should be prepared.

Installation of the underground part

The construction of a rain sewer network provides for the next stage to prepare a trench, which is formed according to the planned plan taking into account the slope. If the pipeline will be warmed, then around it should form a shell of geotextiles and rubble. An alternative option is the use of a cushion of sand. At the next stage, the bottom of the trench is rammed, and the stones are removed. Formed after them, the space should be covered with soil. The bottom is filled with a sand cushion, the thickness of which is 20 centimeters. To install the reservoir tank, a pit should be formed. In the role of a collector, you can use a plastic container. But if there is a desire, you can perform a collector well of rain sewers. These works assume the pouring of concrete into the fitted formwork.

Methods of work

In the ditches, which were tamped and equipped with sand cushions, it is necessary to lay pipes. To connect them to one system, you need to use fittings. If the rainwater pipes will have a total length of more than 10 meters, then there should be provision for inspection wells. In places where water collectors and pipelines are connected, sand catchers must be installed. After connecting all the elements in a single chain, you need to seal the seams. Before filling the trench, tests are carried out by pouring water into the water intake.

If there were no weaknesses, then it is possible to fill the system with soil. Gutters and pallets are equipped with gratings.

Advice of a specialist

The collector's well is not allowed to enter the general sewer network, since it receives sewage from oil products and chemicals. If you own a country house, you can connect the livnevka to your own canalization, since there will not be hazardous components in the discharged water that might require fine cleaning. Drainage pipes are most often made of PVC, and their diameter should be equal to 110 millimeters. The elements are joined together by a double clutch. The slope of the sewer to the spillway should be about 2 centimeters per meter.

Conclusion

Livnevka should not be combined with a drainage system. If this requirement is ignored, then gradually the water will saturate the underground clay soils, which will begin to swell and destroy the blind, as well as structures and foundations. It should not be for this reason that the sewage drains are discharged in the sewerage of the pool and the bath.