Bored piles with grillage, the installation technology of which will be described in the article, are used today quite often. This is due to the fact that this kind of foundation is able to withstand the building on almost any ground.
Foundation Features
Piles must be mounted below the level of soil freezing. This base is suitable for terrain, in the territory of which there are slopes. You can start work on arranging piles on any type of ground. Work will not have any impact on nearby buildings and facilities on the ground. If you use this foundation, then the building can be erected even in close proximity to the reservoir, which is excluded with other types of foundations. Bored piles with grillage can withstand any construction, this applies to both frame, log, and brick houses.
Construction Features
Bored piles with grillages, the installation technology of which will be described in the article, must be mounted in increments of 100 cm. If this distance is shortened, the supports can be deformed during operation. As an exception to the mentioned rule, the installation of this foundation on rocky soil appears. In this case, the minimum step should not be less than 30 cm. In order to calculate the distance between the supports, it is necessary to use information that reflects the bearing capacity of the supports of different sizes. Thus, if bored piles with grillage, the installation technology of which will be described in the article, are mounted under a building whose weight is 50 tons, then it will be necessary to use 50 supports. At the same time, the diameter of the latter should be equal to 15 cm. As an alternative solution, 17 piles can be used, the diameter of each of which should be equal to 25 cm. The minimum allowable step between piles in the tape base is equivalent to two meters. If you plan to equip a monolithic grillage, then you should prefer your own in 300 millimeters. In this case, the bearing capacity of one support will be equal to the limit from 1600 to 1700 kilograms. In order to build an average house, about 70 piles will be needed.
Varieties
If you want to install bored piles with grillages, technology and types must be considered beforehand. The main types of such a base are a foundation with a hanging grillage and a base with a monolithic grillage. The first variety involves a small distance between the grillage and soil. Its width can vary from 80 to 100 millimeters. This creates the impression that the building hangs above the ground. This design is used when necessary to protect the base from swelling. Such construction is also relevant in areas where there is a risk of flooding. Among other things, such a base is equipped on marshy areas.
As for the foundation with a monolithic grillage, it is most often built for houses from heat blocks, bricks and aerated concrete. A monolithic grillage is a concrete strip that forms a single structure by combining piles. The supports of this base are mounted to a depth below the freezing line.
general description
The foundation on bored piles, the installation instruction of which is described in the article, has, as already mentioned, a high bearing capacity. Thus, the pillar, whose diameter is 30 cm, can withstand 1700 kg. While the support of 50 cm can undergo 5000 kilograms. With a slight increase in size, the bearing capacity increases several times. The bearing capacity is affected not only by the size of the support, but also by the material from which they are made. Among other things, there is a need to take into account the bearing capacity of soils. It will depend on this whether the support can go down.
Arrangement technology
If you decide to equip the foundation with a grillage on bored piles, it is important to familiarize yourself with the technology of the work. To begin with, using a mechanical or manual drill, a well should be formed, which should be located below the freezing line of the soil. The soil should not be removed from the well, compacting and ramming it. Roofing material is placed in the resulting pits, which collapses in the form of a cylinder. It is necessary for waterproofing. A reinforcing cage should be installed inside the resulting pipe. At the next stage, the space is filled with a mixture of concrete of the selected brand. After the solution has completely hardened, the support pillars can be considered ready. It remains only to carry out a bunch with the grillage, after which we can assume that the quality foundation for the house is ready.
Cost of work
If you decide to install bored piles with grillage, technology, the price of such a foundation should interest you. The first part of the question has already been highlighted above, while you can find out about the cost by reading this article. The price of the work is affected by the material at the base of the piles, the number of columns and the complexity of the work. Among other things, delivery to the construction site will be taken into account. The average cost of installing this design will vary from 2,000 to 3,000 rubles per square meter. If you decide to install bored piles with grillages, the installation technology of which was described above, then you can perform some types of work yourself.
Thus, the cost will be lower if one of the listed actions is carried out by you personally. This can be: marking, well formation, concreting, as well as grillage installation.
Consumer Reviews
If you had the task of arranging the type of foundation described above, then you should study the foundation technology, bored piles and grillages are integral components of this design. It is important to know this before the start of work. However, you must read the reviews. All the masters who have already been involved in carrying out such work, note that such a kind of foundation can be easily equipped independently. Future owners of private houses often dream of completing construction, saving money. This will be possible if bored piles with grillage become your choice. Experts say that in the end it will be possible to get a fairly reliable and solid foundation that will act as the foundation of any home, helping to save the budget.