As reinforced strip foundation: fotoinstruktsiya video

During the operation of the foundation of the bath at all times subject to a wide variety of loads from the weight of the house, and the last movement of the soil and frost heave. The lower part of the pair periodically tests the tensile load, the upper part of it - in compression. There are still forces frost heaving, which are able to exceed the pressure on the ground, on the way there is a house, and cause considerable tension strip foundation. Invalid reinforcing it at one time will lead invariably to the destruction of the zero level, and then the walls of the bath. Therefore, with this seemingly unpretentious process - reinforcement of the foundation slab, tape or column should be approached very seriously.

The need for reinforcement of the foundation

The foundation will be strong if there is a solid metal in reinforced concrete structures. Due to its technology foundation tape are very durable, they allow the construction of monolithic buildings complex configurations. With concrete vibrator, it is possible to obtain an extremely solid foundation. Regardless of the thickness of the walls of the house, it is necessary to take into account the width of the foundation.

Preparatory to the reinforcement work - is cleaning the territory of the construction. It should be on the perimeter of the foundation dig a trench. This work can be done manually or with special equipment. So that the walls were smooth, set formwork. The carcass reinforcement is mounted together with the formwork. Then poured concrete layers, waterproofing is carried out by means of bitumen mastic and roofing material.

Reinforce the foundation can own, with their own hands. However, one should not forget that after the waterproofing of the foundation necessary to fill up with sand sinus foundation. For cold climates desirable insulation strip foundation. It can be simply pasted polystyrene. Proper reinforcement will allow a similar foundation to stand many years. About prefabricated foundations is impossible to say, the maximum service life - 75 years, and repairs must be done every 10 years. A type of foundation that exist for the construction of the house or garden, it is the construction of strip foundation is extremely popular in the private house building.

How to choose a reinforcement for the foundation?

When purchasing valves for strip foundation is necessary to pay attention to its designation:

• With the index shows that rebar is being welded.
• Index to mean that the valve is resistant to corrosion cracking, sometimes there is live.

If any one of these indices is not present, the valve is not suitable for the foundation.

Incidentally, for sealing frames made of bars with a diameter of 12 mm due to labor intensity arc welding process is not used, moreover, is very easy to burn the rods. Also, arc welding is not applicable for valves Class A-III and 35GS.

The magnitude of overlap is 30 reinforcement diameters. It must be installed in such a way that it does not touch the formwork - distance from the shuttering plane to the armature called protective layer. He protects the valves on the temperature and atmospheric influences and corrosion.

The process of reinforcing the foundation

When saving to the valve will substandard reinforcement of the foundation, bath winter is bound to give a crack. In this case, at first he "ticky-tacky" foundation goes up and then break. The result will be released through crack, which is across the bath from the bottom to the top - there will be heard a whistle, it is necessary each year to seal and caulk. Over the years, this crack will expand. Because in this matter as experienced builders strictly adhere to the SNP in which the foundations of the reinforcement rules spelled out in some detail.

How to reinforce the stairs

It is not any land for building bath can be perfectly aligned and prepared for construction. In this case, so-called building steps for which a private foundation reinforcement arrangement having height variations.

Thus, it is desirable to extend the amplification steps from the ledge on the meter. Further, in the level of the upper belt and the upper portion of the sole reinforcement rods will be moved up to 2 m in length - centered over the ledge. Finally, set the transverse reinforcement per 1 m of the bench, with 1.5 m increments.

How to reinforce the corners of the foundation

Why is this so important? Angle reinforced concrete foundation always serves as a site of stress concentration. This is where fittings are most exposed to multidirectional stresses of compression and tension, and when the circuit reinforcement strip foundation is wrong, such stresses will be too much for the steel rods fittings.

In particular, when the angle of the tape base or is frangible valves is incorrectly connected, without the transmission of forces from one rod to the other, a monolithic strip foundation will not represent themselves a single rigid frame, and is a collection of individual beams. As a result, in the corners of the foundation will be cracks, spalling, concrete separation.

Welding and bonding of the foundation

The most serious consequences of the construction of zero occur at a time when the reinforcement strip foundation was carried out with gross errors. Among builders There is even a belief that binding reinforcement is needed to fix the skeleton poured foundation - its total strength depends on it a little, some builders recommend it to knit reinforcement, not cook - in fact as a result of swelling of the soil affect the very foundation of the various forces and reinforcement can even imperceptibly, but move.

It is believed that, when it is cooked all the tight, it remains only to hope for the soil of mind, otherwise cracks can not be avoided. But, according to scientists more than their husbands, if only to reinforce the cross hairs all fittings, connecting them binding wire, it is fraught with layers of foundation chip width and cracked corners.

At the same time some Soviet inventors also believe that to make a monolithic foundation reinforcement is permissible only "free crossed." Now experienced builders are sure to do whatever is necessary only for the right schemes. Reinforcing corners - this anchoring, anchoring reinforcement by bent elements, as well as communication zones of different stress in a corner of the foundation, more precisely, the connection of the outer layer of the concrete ribbon with the inner layer her. So bind only the upper reinforcement bars, she exhibited exclusively at the outer rods and inner rods in the corner really crossed freely. In the zone of angular anchoring transverse reinforcement put exactly twice as often as recommended for strip foundation. You can calculate this using the following formula - 1/2 and 3/4 of the height of the basement section, but eventually had to leave not more than 25 cm.

Therefore, the joints of reinforcement wire can bind, but only in order to consolidate them before welding. And immediately after the preparation of the chassis must be carefully these joints boil, but do not make in any case like this. So runs the reinforcement of foundations and columnar, and tape, and tile.

That's all - you can continue to build the formwork and pour the foundation. In this case, when the strip foundation - one-piece, it is necessary to fill in a single day.