Quite often there are situations where the foundation of already long-established buildings settles. This can happen in connection with a variety of physicomechanical and hydrological processes that occur in the lower layers of the soil. These changes can reduce the bearing capacity of the soil.
In addition, changes in the properties of the soil can also cause construction work, which can be done near the house.
Drawdown is most often observed near the very foundation of the foundation stone.
The first sign of deformation will be the appearance of cracks on the stage and the holes around the column. In the future, both foundation problems will increase.
However, it should be noted that the subsidence of the foundation may be temporary. It will stop by itself, as soon as a more stable position will be occupied by a bed stone. This can happen in the process of precipitation on a strong layer of soil.
In all other cases, the dimensions of destruction will only increase. Log houses, for example, will expand joints and seams, cracks will increase in the area of the lower log wreaths, a caulk will fall out. Therefore, one can not do without house foundation repair.
How to fix foundation cracks
Do not panic if you find a crack in foundation. It can easily be eliminated. Carefully inspect the dimensions and direction, after that you can make a decision – to repair cracks and strengthen the cracked foundation by yourself, or to involve specialists in this matter.
Elimination of horizontal cracks
How to fix foundation cracks? If on the concrete horizontal cracks of the small sizes are found out, with such kind of works it is quite possible to consult most. Most often, problems arise due to improper preparation and laying of the building mix.
With the passage of time, the stratification of parts occurs, which leads to the formation of splits. This type of splitting is very often found in perimeter foundations, which were poured into several stages.
Before deciding on the removal of cracks in the perimeter foundation, you need to measure them and find the right material. To split a small size (0.1-0.2″), it’s easiest to cover it with epoxy resin.
After thoroughly cleaning and drying the surface of the seam fill them with resin. In order for the seam to be monolithic, the fault is filled from the bottom point. This will not allow non-frozen material to flow down the seam.
Epoxy resin is strong enough and resistant to moisture. Its full congealing takes place during five days. After the expiration of this period, you can carry out cosmetic work to restore the appearance of the building.
The larger structural defects are eliminated with the help of special cement mortars. The cleavage site should also be cleared and filled with repair mortar. After the mixture begins to grasp, it is leveled with a trowel and a damp gauze is applied to it. The mixture should be kept moist for several days, in order to prevent rapid congealing.
In general, sealing and repairing cracks in the foundation is a rather complicated process and it is impossible to choose one recipe for all cases. The selection of the material and the procedure for work in each particular case may differ materially.
Vertical faults and cracks
This kind of defects in the foundation of buildings most often conceals a significant threat. If the crack is even, no thicker than the hair, and does not cause any deformation of the walls, then it can be eliminated on its own because it was previously described. After a while, watch the repair site to make sure that this process is not repeated.
How to fix cracked foundation? In the event that the fault entails a displacement of the wall or the width of it increases in one direction, it is necessary to urgently perform major repairs. When such a crack is discovered and a split in the foundation, what to do to solve it is better to consult specialists.
Carefully study the nature and amount of damage. Then choose one of the foundation repair methods:
- strengthening of a separate part;
- strengthening of the whole structure.
If the damage is of a massive nature, it is advisable to repair the entire structure. In this case, the foundation is torn off, a metal mesh is attached to it and an additional bay is put into the new formwork. As a result, the size of the entire base of the structure increases.
A separate part of the base can be restored by installing a new section of the structure next to the problem site and both parts are rigidly fastened together.
But you should always remember that it is not recommended to produce everything yourself without proper experience. Inept actions can lead to undesirable results. This work requires special equipment and skills.
Signs of Foundation Problems
The main evidence of malfunctions is depressions and cracks at the base.
During shrinkage, the base can easily crack, which is not capable of progressing, and therefore requires only cosmetic repair. To do this, just stick the paper tape across the crack, then watch its integrity for 10 days.
If after a given period of time the tape remains intact, it will be enough to pound the broken bricks into the crack and concretize them. In another case, it becomes clear that the ground will continue to be destroyed in the future, so you will have to work hard to restore it.
Repair of the foundation with your own hands can be made exclusively for columnar (pile) and tape types. Repair of concrete and reinforced concrete structures may require the availability of specific knowledge and skills, in addition, it is necessary to have a special construction expensive equipment. Consequently, it is unlikely that it will be possible to perform DIY foundation repair.
The only thing that can be done for how to fix foundation problems is to streghten it.
How to fix foundation problems
When there is a strong destruction of the foundation of the building, it is required to quickly stop the settling process and repair the problem areas. To this end, so-called beacons are installed on the cracks.
They enter the date when they were installed. With a rapid rupture of marks in area of the foundation, a pit is pulled out at an inclination of 350. The size of the pit is small and the depth should be equal to the depth of the bed stone.
When repairing such a foundation of the house, a metal or asbestos-cement pipe is installed in it, having a diameter of 6 to 8 inches. After that, a special concrete solution is poured into the maximum.
Stop pouring the solution in the event that it does not decrease within 2 hours. Resume the filling of the solution can be after 1,5-2 days. This process is repeated at least 3 times (in some cases it is enough and 2 times). Then re-install the beacons on the cracks.
If the subsidence does not stop, then you will need to top up the solution in the pipe. Only in this way can we ensure that the old foundation of the structure can be fixed.
How to fix perimeter foundation
Tape foundation creates a lot of problems in its repair. The perimeter foundation is an integral reinforced concrete strip, in this unity is its strength. When problems occur, the load distribution is uniformly distributed throughout the foundation.
Thus, using the perimeter foundation, it is often possible to exclude the possibility of faults even in the risk zones. But all the same, subsidence of the ground still contributes to the breakdown of the foundation, therefore, it is necessary to take appropriate measures immediately, starting a complex of restoration works.
First, the reasons for the draft of the house are clarified, and if possible, they must be eliminated immediately. To test how old the foundation is, the beacons are installed on the cracks. If the test results are negative, then before starting to repair the old foundation of the house, it is necessary to prepare the cement mortar and install a powerful jack.
First, an autopsy of the area to be repaired is done. Subsequently, the foundation zone is jacked up. As a result, voids are formed under this zone, which are filled with cement mortar. For these purposes, it is better to use the ready-made solution so that it is whole, and poured onto a slightly dried previous portion. As a result, under the foundation, a new concrete structure appears, capable of withstanding the further subsidence of the soil.
How to fix pier foundation
Due to the fact that the strip foundation is integral, working with it is much more complicated than with a columnar foundation. In a columnar foundation, the foundation is made up of columns that are structures that are independent of each other.
Initially, the necessary types of excavation, and then install around the old pillars of new or rebuild the failed pillar. In any of these versions, the beam will need to be subdued. If new poles are used, then this process can be carried out at the completion of work.