Fixed formwork for foundation: device, advantages, disadvantages

To build any building you need a foundation. Often during the construction of the foundation, a formwork is not removable. This technology is universal, as the risk of poor-quality construction of the building decreases at times. In addition, the installation of the base is much easier.

You can make such a design yourself, but first of all, you should understand the advantages and disadvantages of this technology. Its main advantage is the shortening of the construction time. Fixed formwork foundation is going right into the trench, especially since then it does not need to be dismantled. In addition, the formwork can be purchased in a ready-made form. Also it should be noted fire safety, resistance to seismic activity, low weight, moisture, heat and waterproofing of a similar design. The load on the base in this case is minimal.

Fixed formwork for the foundation has only one drawback - you can not reuse the already used blocks. They always remain an element of foundation. For the construction of a structure, materials such as fibrolite, cement or expanded polystyrene blocks are usually taken. And, the latter option is classic. In addition, it does not interfere with the ventilation of the substrate.

Fixed formwork for the foundation is easy to install, the only thing you should not do is rush. All work must be done according to plan. If you plan to equip a strip foundation, the structure should be installed on a base covered with a layer of waterproofing. The blocks must be mounted in reinforcing bars. Since they are equipped with special grooves, the metal in them will easily enter.

Fixed formwork for the foundation is constructed of several layers of blocks. The first of these is the most important and is responsible for the correct formation of the base. After you have successfully laid three layers, you should start pouring the grout. When installing the formwork, you immediately mark out where the doors, slopes, and other elements will be mounted. In order for the mixture to lie flat, it should be sealed with a deep-seated vibrator.

Fixed formwork for the foundation provides incomplete filling of the last row of blocks. It is desirable to cover it with a mixture of only 60%. The walls will be much stronger if the seams of monolithic concrete will be located inside the blocks. At the same time, care should be taken to arrange ventilation and other communications. To do this, the blocks mark the exit points of the pipes and make corresponding holes in accordance with the plan.

In appearance, the finished formwork resembles a sandwich, inside of which there are polystyrene sheets. It is also necessary to take care of the binding of the reinforcement in advance, since otherwise the stability of the base will be threatened.

That's all. Non-removable formwork equipment is a simple task, which, however, requires attention, patience and certain skills. But if you are not confident in your abilities, then it is better to entrust this work to a more experienced master.