Wall-mounted drainage of the foundation

Arrangement of adjacent drainage

Construction of adjoining drying communication

The drainage system is extremely necessary in the presence of a basement or basement. The optimal time for the design of the wall drainage is the stage at which the foundation pit is laid for the foundation, that is, the initial stage of construction.

In the case of an already constructed house with an absent system of wall drainage, only additional cash costs, as well as time and effort, are required to ensure the necessary protection of the structure from storm and groundwater. The first thing that is necessary is again to dig around the structure of the foundation pit.

The drainage pipeline will perimeterally encircle the structure. Drains, they are drainage pipes, provide in the places of their commutation manholes. Most often installed in the corners of the building. At the lowest point in relation to the whole system, a pumping well is organized, which performs the function of pumping excess water into the nearest pond or storm sewage outside this section.

To create an additional protective layer made of clay, the so-called clay lock, laid in 0.5-1 meter from the foundation. This layer will create an additional layer of protection against the penetration of storm and groundwater to the foundation of the building.

Adjacent draining is a system of several drainage systems of different types:

• Formation draining. Its installation is carried out at the level of a sand cushion, directly below the level of the foundation plate. It consists of perforated drains, a well - receiver and a pumping well. Drainage pipes are filled with sand and gravel, over which excess water flows.
• Linear draining. It consists of polyvinyl chloride segments, which are equipped with grills for protection against debris. It is equipped along the entire length of the blind area.

Calculation of the design of the wall drainage system

For the calculation of the drainage system, it is necessary to take into account some components.

• Depth of foundation laying. The laying of the drainage system should be located 30. .. 50 centimeters deeper than the basement foundation cushion.
• Slope, which provides a gradual deepening of the drainage system to the collection manifold. To ensure that the water does not stagnate in the drainage system pipeline and ensure uninterrupted drainage, it is necessary to lean the collector at least 2 centimeters per meter.

To simplify operations, it is necessary to calculate the drying points, the top and bottom points. For the top point of the drainage system, take the corner of the house, the foundation of the basement, for the lower one - the drainage well, into which the sewage enters.

Let's consider the visual execution of calculations of a wall drainage system.

Initial parameters: The width of the building is 8 meters, length is 12 meters, remoteness of the well from the structure is 15 meters. Calculations: Calculate the length of the site around the house - 8 meters + 12 meters = 20 meters, add the distance to the well and get 35 meters of total length to the drainage well. Conclusion: The necessary bias of the system will be 70 centimeters, at the rate of 2 centimeters for each meter of the total length of the drainage system.

Installation of a wall drainage system

It is not difficult to mount a home drainage communication by one's own hands, so we divide the work into separate stages:

1. When constructing a sand pillow, it is necessary to accurately measure the height difference. If possible, carry out these operations with a laser level. This is necessary for the uniformity of the gradient.
2. Next stage, it is necessary to place the geotextile cloth and pour on it, pre-washed gravel. It is necessary, while remembering a uniform bias.
3. Pipes from perforated polyvinylchloride with openings that do not exceed the smallest gravel size to eliminate possible clogging are stacked.
4. Installation of drainage piping elements is carried out among themselves. In this case, it is necessary to check the slope level, 2 centimeters per meter of pipe.
5. It is necessary to provide for the presence of vertical pipes on "rotary knots", which will be tightly closed with a lid. This is done to simplify the washing process of the system.

1. The pipeline is covered with a layer of pure gravel with a thickness of 15 to 20 centimeters and a pillow of gravel is covered with geotextile. This manipulation is carried out in an overlap to remove the possibility of soil penetration into the formed ground slits.
2. Sand is poured over to provide additional filtration.
3. The last step is to fill the remaining volume with soil.

Thus, the organization of near-surface drainage was considered. If periodically to carry out routine maintenance, this communication of the wall drainage will show a good work for several decades.