How to make a look

Any car needs a periodic elementary inspection and repair that the owner can perform independently. But without the presence of the observation pit, it will not be possible to eliminate even the most nonsense breakdown or replace the oil, as you can not get to the right place. In order not to pay for a hundred round sums, make a look.

1
Dimensions of observation yama

First of all, remember that the sizes of the pits should allow the car owner to move freely in the room, straighten with work at work at all, and also to make breaks for recreation. Consider this when calculating the size of the observation pit:

When choosing the width of the structure, the brand and dimensions of the car should be taken into account, namely the distance between the wheels (no matter is the rear or front). The width should be less than this value to eliminate the risk of sliding and falling the car down when driving on the pit. It is also possible that the car owner wants to change the car, that is, we leave a place for maneuver. Therefore, it is better to make a standard to a standard - 70-75 cm in width.
Having calculated the length of the room, add another 1 meter to the length of the car to the length of the owner's free shutter. As a rule, the length of the structure should not be less than 2 meters.
When determining the depth of the pit to an increase in the car owner, a stock of 15-20 centimeters is added.
All calculated values, namely, the length, width and depth of the observation pit, should be increased by the size of the allowance - close to 20-30 centimeters. It consists of a width of waterproofing, a layer of heat-insulating material, concrete and brick masonry.

2
Excavation

Drawing on the floor in the garage a rectangle with the calculated dimensions of the pit, proceed to earthworks:

Digging the depth of us, leaving part of the soil for further work, namely, the fading of the sinuses after arranging the walls of the structure.
After that, it is necessary to align the floor of the dumped pit and compact it using rubble. The layer thickness should be located one and a half times to exceed the size of the largest pieces.
At this stage, it is recommended to make a trench niche to accommodate into them tools, spare parts and other devices needed during car repair.

3
Paul observation yama

Top of compacted rubble make concrete floor. To prepare 1 cubic meter of concrete, you will need a 300 kilogram of cement, 680 kg of sand, 210 liters of water, 0.9 m3 rubble. However, in the case of manual kneading, you will have to add water more. The floor thickness should be 6-7 centimeters. For the reinforcement of the floor, we use a wire mesh whose thickness is 4-5 millimeters. It must have a 150 mm cell.

4
Walls of observation yama

Walls of the observation pit can be put on a brick or pour concrete, consider a Read more The second option due to its greater reliability:

Walls make the thickness than the floor, but not less than 15 centimeters.
Concrete is prepare according to such proportions: 360 kilograms of cement, 0.86 m3 rubble, 670 kg of sand. Waters add 210 liters.
The formwork is made from OSP sheets, which have a thickness of about 10-12 mm. At the same time, it should be simultaneously equipped with wall niches.
The walls are concreted by tiers, the height of which is 30-40 cm.
Taruses are compacted by plug.
Do not forget about the reinforcement of walls with a similar grid that you strengthened the floor. The walls are also strengthened in layers, as well as concreting.
When creating the last tier, install cylindrical "glasses" for mounting the lamps, for which the cut-off sewer pipe is placed in the formwork.
Then you need to strengthen the walls of the room. For the framing of the perimeter, the pit uses the part made from the corners by welding.
Look out 2-3 days while concrete grabbed, and you can get a formwork.
To create a backfill, use the "incompressible" soil consisting of rubble and gravel. I fall asleep layers, thoroughly tamping each of them, approximately 20 centimeters.

5
Waterproofing observation yama

With a high level of groundwater, do not forget to carry out waterproofing of the observation pit. You can choose any of these materials:

Bituminous material. You can use the rubberoid, EuroRuberoid, placing the mustache, which is about 25 cm. Bitumen mastic is used for laying material, which is taken to apply in 2 layers. The jokes are sampled with a hot bitumen.
Polymer membranes. This is a high-quality material, which is more than 50 years of service. When they are installed, the reinforced frame is equipped with geotextiles. When laying the membrane make a nest, reaching 10 cm in the presence of a self-adhesive basis, or 30 cm, if not. You can also purchase polymer geomembranes with a ready-made geotextile layer.
Penetrating agent. Sold in the form of a dry mixture, which is taken before applying with water. After applying to the concrete layer, the composition penetrates into the material, stopping the leakage to the surface of the water. Most often, the use of penetrating composition acts as an additional waterproofing.

When creating a backfill, you can use fatty clay to improve the quality of the waterproofing of the observation pit. In addition, in the concrete that you use to fill the walls, you can enter hydrophobic additives.

6
Finishing work

After waterproofing of the walls, we will deal with direct arrangement of the structure:

When arranging the observation pit in the garage, do not forget to insulate it. In this regard, polystyrene is considered to be ideal due to excellent thermal insulation characteristics and the property of absorbing the minimum amount of water without losing their properties.
Swipe the electrical wires for its lighting, hiding them in the steel corrugation, and in the deepened deepeners in the walls, install the sockets, switches and lamps.
Since condensate is formed in the heated garage, the ventilation should be provided in the observation pit by removing the flexible air duct, which is closed with a grid, at the level of 30 centimeters from the floor in the garage. In addition, it will remove essential oils and other chemistry and contribute to the premises of fresh air.
We overlap the pit with a flooring of wide boards, the thickness of which is 40 mm. Of these, several shields are manufactured.

Thus, the observation pit, built in compliance with the technology, is able to significantly ease the life of the motorist. Carefully follow our instructions, and then the work will be in joy.