Foundation drainage do it yourself

01-04-2018

Useful

If the foundation of the house is constantly in wet soils, it will lead to unpleasant consequences - walls and windows and doors can tilt. Also, a fungus can appear on the interior walls. This can be avoided if you arrange a foundation drainage with your own hands.

Preliminary work

Before you do direct work on the device drainage, you must first make a thorough waterproofing of the foundation. In order to carry out these works, it is necessary to prepare the foundation.

A ditch rummages along the perimeter of the house in order to get to the house foundation. The excavated soil is deposited next to the trench, so that after the completion of the work, it is backfilled. The trench width should be up to approximately 1 m.
After earthworks and the removal of the foundation, it is carefully cleaned of the soil, and also remove the old waterproofing.
Then the foundation must be thoroughly dried. For this you can use different types of hair dryers and burners, but it would be better if the foundation dries in natural conditions.
In order to accidentally drop into the pit, a trench around the perimeter is fenced, and illuminated for the night.

Basement waterproofing, depending on the type, can be: roll, pasting, coating and penetrating. The selected type of waterproofing will dictate the principle of drainage.

In practice, the most popular waterproofing waterproofing, in which the foundation is subjected to treatment with bitumen mastic. This method ensures long life and reliability. When the basement is drained, such waterproofing is combined with gravel material with which the trench is filled up under the drainage.
Waterproofing plays an important role, but even without it, the filling of gravel will allow water to pass well and take it away from the foundation. This means that the gravel layer for drainage plays a significant larger role than the treatment of the foundation with bitumen. Gravel is very important, as water will flow through it to the perforated pipes. In addition, this material additionally ventilates the foundation.
Of great importance in the device drainage has wrapping material called geotextiles. This material should be a completely wrapped layer of gravel to avoid silting and clogging with fine particles. In the absence of geotextiles, the drainage system will quickly cease to fully perform its functions.
Gravel has another important advantage over other types of drainage material - it does not shrink. This positive quality can be used with the next blind area device, so it is not necessary to wait for a long time until the filter material is completely settled and settled. Gravel does not shrink because every layer is carefully tamped. A special machine is used for better sealing of the filter bed.

Although gravel is expensive, it is advisable to give preference to it. You can certainly use a cheaper material, but as they say "miser pays twice." This means that with a cheap filtering material, the durability of the system cannot be guaranteed and, most likely, the drainage system will have to be redone in a short time. With gravel backfill, durability and reliability are guaranteed.

The remaining materials have less influence on the quality of the drainage system, but nevertheless, their choice should be given due attention. Perforated drainage pipes must be of high quality. Be sure to protect drainage geotextile material. Also, high-quality and reliable should be plastic manholes and pumping equipment.

Work on the installation of the drainage system

A ditch around the perimeter of the foundation of the house is dug, waterproofing is done - you can arrange a drainage around the foundation.

A distance of 1 m is measured from the foundation and a recess is made along the contour around the house with a mark slightly below the foundation. The width of the recess should be oriented on the diameter of the perforated pipe of 110 mm and dumping on both sides of the drainage product of 10 cm in size. In total, it turns out about 30 cm.
Then the bottom is covered with sand, the layer of which should be up to 10 cm thick. At the same time the slope of 1 m should be 1 cm.
Geotextile material is laid on the sand layer, the width of which is 1.3 m. The edges of the geotextile are fixed at the top. The material is carpeted with a 10-centimeter layer of gravel.
Drainage pipes with a perforated surface are laid with a known slope.
Another piece of gravel is poured on top of the pipe, which should cover the drainage product by 10 cm.
Top gravel is covered with geotextile, the edges of which are fastened together.
The pipe is diverted from the building at a distance of not less than 5 m and a water intake is installed in this place. It should lie below the pipe at 1 m, while not reach the groundwater.
Geotextiles are placed in the receiving water and plastic container with holes made at the bottom is installed into it.
The container on the sides is covered with gravel first and then with soil.

The installation of the drainage system is completed by installing a manhole.

Video

This video will not only help to properly make the foundation drainage, but also will tell about waterproofing: