How to pour the foundation on loamy soil

You will need
  • - sand;
  • - cement;
  • - gravel;
  • - water;
  • - shovel;
  • - boards for formwork.
Instruction
Loam is considered a problematic soil. In the spring it thaws unevenly, so there may be distortions in knowledge. Often on such soils high groundwater levels, this also does not contribute to the stability of the base.
Before you pour the foundation on loamy soil, decide on the weight of the structure. If you plan to build a house from a timber, the cross section of which is more than 15x15 cm, logs, bricks, blocks, then it is necessary to dig a recessed foundation. For a barn, one-story of a thin bar, frame-shield house can be made shallow. The latter option requires less material and physical costs.
Before you pour the foundation on loamy soil, decide on the weight of the structure. If you plan to build a house from a timber, the cross section of which is more than 15x15 cm, logs, bricks, blocks, then it is necessary to dig a recessed foundation.For a barn, one-story of a thin bar, frame-shield house can be made shallow. The latter option requires less material and physical costs.
Mark the territory under the future structure. Stretch the rope around the perimeter and where the bearing walls of the house will be. A foundation is also needed for them.
By marking remove the soil to a depth of 50-70 cm for a shallow version. For recessed, increase it to 170-2100 cm. This value depends on the depth of soil freezing. The bottom of the trench should be below this level. Under heavy knowledge it is necessary to dig a trench for the foundation to stable layers of soil - by 2100 cm.
The width of the concrete base is 30–40 cm. Lay a 10–15 cm layer of rubble in the trench. Spill it with enough water, tamp it. To do this, use the rammer. If it is not in the household, then use a log or a bar, holding them vertically.
Pour sand with a layer of 10 cm, spill it well with water. This layer is almost the entire "leave" by filling the holes between the stones. Pour the next one, the same thickness, spill again, and then tamp it. Pour the sand in this way only 4 times, in a layer of 10 cm.
Place the armature in the pit.Lay horizontally long, and vertically short rods. Properly tie them together with a strong wire, pay special attention to the corner parts of the reinforced frame.
Construct the formwork of their boards or boards, putting them on the edges of the pit. Secure with stakes on the outside and inside. Put the internal struts made of narrow boards.
Take pipes with a diameter of 10 cm, put them in a space between the formwork boards around the perimeter, every 3 meters. Cover the holes to prevent concrete from entering. After the concrete has set, release the holes. You get fragrances that are necessary for airing the underground. Cover them from the outside with a net to prevent rodents from entering the house.
If you are making concrete yourself, then take the cement arch M400. On 1 part of it, add 4 parts of sand. Pour water, stir. The mass should be consistency sour cream. It is important to quickly make a lot of portions of the solution and, without delaying, fill it with formwork. Therefore, it is reasonable to use the services of the plant, where they sell ready-made concrete. It is brought in special tanks. Filling is carried out quickly, therefore a lot of time between portions of filling will not pass.
Check the flatness of the surface building level. Cover the foundation with sacking, let it dry for 3-4 weeks. Only after its complete hardening begin construction.