Foundation of FBS blocks: pros and cons, device, waterproofing

Foundation blocks allow the construction of durable and reliable bases for different structures. Against the background of monolithic structures, they favorably differ in speed and convenience of laying. That is why foundation blocks became common in single-storey and multi-storey buildings.

If you decide to use this material to build a foundation, you need to become more familiar with the pros and cons, as well as the features of the technology. Of course, if you use this material, you can not do without special equipment, because one product can weigh more than 100 kg, but you can partially do the work yourself, which will save you money.

Description of FBS

A foundation block is produced by the method of forming heavy concrete, which is further strengthened by steel reinforcement. The structure and size of the elements allow you to distribute the load from the building onto the laid foundation. As practice shows, the foundation of FBS blocks, pluses and minuses of which will be considered below, is characterized by higher reliability and durability in comparison with concrete monolith. FBS is issued in several varieties, among them it should be noted:

• Tape;
• Column;
• Massive.

However, all these products are manufactured using the same technology and are subject to verification. Therefore, the buyer can be confident that he is acquiring a quality product.

The main advantages of the foundation from FBS

The foundation of FBS blocks, the pros and cons of which should be considered before the construction starts, is ribbon or columnar. As an alternative to FBS is a concrete monolith, however the blocks allow you to abandon the alignment of the formwork, and it is not necessary to expect the setting of concrete. A positive feature is also the fact that the foundation of FBS can not lose its performance characteristics due to weather deterioration. After laying, there is no need to moisten the surface of the basement, and also cover it with a film.

FBS passes quality control in the plant, its characteristics do not depend on the weather at the time of construction, while assembly of the structure is faster and easier. The foundation of FBS blocks, the pros and cons of which should be considered by a private developer, allows you to save. With the help of blocks you can reduce labor costs, therefore, workers will need less, and construction time is reduced. Blocks are distinguished by their strength and reliability, they undergo excellent temperature changes, the material is resistant to frost, fires and moisture, and also conducts heat rather badly.

The foundations of the foundation of FBS

The foundation of FBS blocks, the pros and cons of which are mentioned in the article, differs in that over time some sections of the construction can survive. This is true when the soil reacts to temperature changes. The construction is composite, it is assembled from many blocks, so sometimes they behave independently of each other. However, with this minus, the builders learned to cope.

And in order to exclude such behavior of products, during the construction of the foundation sections of the slabs are used, located between the soil and the FBS. This distributes the pressure of the products throughout the entire area of the structure.

The foundation for a house from blocks FBS has one more minus, which is expressed in the need to protect the seams. The base requires waterproofing. If rather large blocks are used, then construction can not be carried out without special equipment.

Ribbon foundation from FBS: manufacture of a pillow and stacking of the first row

The belt foundation of the FBS blocks provides for the formation of a cushion in the first stage. First you need to prepare a trench, given the freezing level, to which should be added 25 cm. At the bottom is laid a pillow, which consists of two layers: 10 cm of crushed stone and 5 cm of sand. In order for all materials to be compacted as efficiently as possible, their surface is watered and pressed.

Then the cushion of concrete is laid, its thickness should be 2 cm. In this state, the preparation is left for the set of strength, then you can start laying the first row.

Foundation of the FBS blocks at the next stage provides for the installation of products. The first row should be laid on the base, which will not be used during the operation. For this, a concrete slab is usually used, but many builders do not bother themselves with additional waste, using blocks that are laid to one side.

As an alternative solution, you can apply cushion blocks that have a slightly different shape - they are flatter. It is necessary to start the installation from corners, the products should be docked as tightly as possible. Stitches are stained with a cement mixture. The first row must necessarily be checked for horizontality.

Stacking of the next rows

Installation of the following rows is carried out according to the principle of brickwork. The vertical seam of the block must coincide with the central part of the product from the bottom row. The extreme blocks in the corners must be laid with overlap. Sutures are cemented. It is necessary to monitor the vertical and horizontal level of the masonry. First, external walls are executed, then you can start laying the inner walls.

Features of mounting blocks

Blocks FBS, the price of which is 730 rubles. Apiece, are usually stacked using a crane. As a solution, a mixture of M-100 grade should be used. The laying of one product takes about 15 liters of the composition. For orientation, it is necessary to stretch the rope between the corners to make it easier to position the blocks horizontally.

To strengthen the structure of the base, a reinforced concrete belt is cast along the upper row, the thickness of which varies from 200 to 300 mm. For reinforcement, a 10 mm reinforcement can be used. On this belt at the next stage will be laid slabs overlap. Some builders dispute the need to use armopoyas, arguing that the products described in the article are fairly evenly able to distribute loads, it is important only to properly pack them. But in practice it becomes clear that the device armopoyasa not recommended to ignore, worse from it just will not.

The construction is built according to a certain technology. It provides for the installation of formwork along the perimeter of the foundation walls, as well as the laying of reinforcing mesh in the formwork. At the final stage, concrete is poured. On this we can assume that the foundation is ready. The technology is rather laborious, but not complicated. If you follow the instructions, you will get a solid, reliable and safe base, which is relatively inexpensive.

Waterproofing device

Waterproofing the foundation of the FBS blocks is an obligatory stage. To do this, you can use a liquid mastic. It is smeared by the outer and inner walls of the base. In those regions where precipitation is frequent and generous, an additional layer of roofing material should be laid, which will improve the quality of waterproofing works.

Conclusion

Blocks FBS, the price of which differs depending on the size, is an ideal option for the foundation. The weight of one product is 80 kg, this is true if the dimensions are 280x300x279 mm. The cost of the block is increased to 910 rubles, if its dimensions are 380x300x580 mm. In this case, the weight of one product will be equal to 100 kg.