The most popular type of foundation for the construction of a building is considered to be a strip foundation. But sometimes its construction is impractical, for example, with a high level of groundwater. As an alternative solution, a monolithic slab is suitable.
Why is a monolithic slab good? It evenly distributes the load over the entire land area where the structure will be erected. This feature becomes relevant when the upper layers of the soil have a low bearing capacity. In addition, the arrangement of such a foundation is not very difficult, which has long been appreciated not only by professional builders, but also by private traders on personal subsidiary plots.
A monolithic slab belongs to shallow structures, since it does not require digging a deep pit. Small deepening allows the foundation to remain stable when the properties of the soil change in conditions of negative temperatures and low vibration.
A monolithic slab is the only correct option for soils with a low level of bearing capacity. It is indispensable in cases where there is no possibility of a columnar base device.
It is imperative to remember about communications, the planning and implementation of which should be in advance, before installing a monolithic slab.
The main element of the considered type of foundation is a reinforced concrete slab. But before she is ready, it is necessary to carry out a number of works.
A polymer membrane is installed on top of the crushed stone backfill. This will prevent excess moisture from entering the foundation. After that, the formwork panels are mounted, which must be well fixed so that they are not squeezed out by a large volume of concrete.
The next step is the construction of a reinforced mesh. The connection of the reinforcing rods is carried out using a knitting wire. In this case, the welding connection cannot be used, since it can significantly weaken the entire structure.
Next, a concrete base is poured. For concreting the slab, a concrete mixture of the M300 or M350 brand is used. When placing concrete, be sure to use a deep vibrator to exclude air from entering the mixture. After completing the pouring, the surface should be covered with plastic wrap. This will allow the concrete to gain strength faster and prevent cracking. You also need to moisten the monolithic foundation within a week, if the weather is hot or windy.
After the concrete base has hardened, you can remove the formwork and proceed to the final waterproofing. For this purpose, bituminous mastic and roofing material are used.
Subject to the construction technology, the foundation from a monolithic slab will turn out to be strong and will last for many years.
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