DIY brick foundation repair

In detail: DIY repair of a brick foundation from a real master for the site my.housecope.com.

During operation, the building may shrink, this can be determined by the cracks that have appeared on the base, basement and walls. Repair of the foundation of a brick private house can be done with your own hands, having studied the technology for performing construction work. It is not advisable to postpone restoration work for a long time. First of all, you need to understand the causes of shrinkage. Only after identifying what caused the deformation to determine the scope of work and begin to eliminate the defect.

There are many reasons why a house can shrink unevenly:

Non-compliance with construction technology. If the foundation is laid without taking into account the level of freezing of the soil, during frost heaving, the soil can push it out.
Groundwater, located close to the surface, washes away the soil under the building, and the house, as it were, falls into voids.
Excavation work or large vibrations near the foundations of the house.
Areas that have soil with inclusions of limestone and marl are not famous for the density of the soil.

In areas where mining is carried out, there are voids underground, leading to uneven shrinkage of housing construction.

Cracks in masonry

Deflections, cracks, faults in the form of an inverted Y indicate an error when laying the foundation. The designers miscalculated the parameters, depending on the composition of the soil and the impact on the base of groundwater and rainwater.

If the depth of the foundation is incorrectly calculated, depending on the level of frost heaving of the soil, the base may bend. With frost heaving, the volume of the soil increases, and it pushes the structure outward. Cracks appear that resemble the letter V. To prevent this from happening, you need to bury the building below the freezing point of the soil.

Video (click to play).

Tilting and twisting occurs when using poor quality building materials.

During operation, almost every building shrinks, it can be uniform or uneven. With uneven shrinkage, a distortion of the house-building occurs, and cracks are formed.

When cracks are found on the house, it is necessary to identify the cause that causes them, and determine the speed of the process of violating the integrity of the building.

Laboratory testing is expensive, so private home owners rarely use their services. There are several simple ways to diagnose:

With the help of beacons, it is determined how quickly the structure deforms. A cement-gypsum mortar is prepared, applied from above and below to the crack, in the transverse direction. The horizontal width of the mark should be 100-120 mm, the height - from 30 to 50 mm. Then they monitor the lighthouses, determine how fast cracks will appear on them, and which part of the house is deformed more strongly.
Tape a piece of paper over the crack and observe it for two weeks. If no breaks have occurred, it is enough to perform cosmetic repairs by filling the break with a brick break mixed with cement mortar.
They dig at least two holes in the places of the greatest destruction. They should be deeper than the foundation point. Determine the condition of the base, its depth, the presence of waterproofing, the proximity of the location of underground sources.

With the help of these methods, it is quite easy to determine the cause of the destruction of the house and the speed of the shrinkage process.

If the situation is not running, the foundation can be repaired at minimal cost.

Having identified the cause of the deformation, you can correctly determine what work needs to be done.

If the groundwater is close to the surface of the earth, a drainage system must be arranged.

Instructions for the installation of the drainage system:

Around the entire perimeter of the building, a trench is dug deeper than the location of the sole of the base.
The pit should be located at a slope in the chosen direction. For every 200 cm, the slope is 10-50 mm.
Waterproofing the foundation.
Broken brick or sand is poured onto the bottom, with a layer of 50-100 mm. Make sure that the level of the slope remains the same.
Spread out geotextiles.
A layer of gravel is poured 100 mm.
Perforated pipes are laid, which will serve to drain water.
Inspection wells are provided in the corners of the building, thanks to this it will be easy to flush the system if it becomes clogged with silt.
A layer of gravel is poured, at least 100 mm thick. Cover it with geotextiles.
The remaining space is filled with rubble, earth, pebbles.
Water collection tanks are installed 4-6 m from the building. They dig a hole to a depth of 2.5-3 m. Install a barrel or a wide pipe in it. A water drainage system is brought to it.
The space between the walls of the container is filled with earth.

You can repair the foundation of a brick house with your own hands. To accurately assess the degree of destruction and identify its causes, it is better to contact a specialist.

If the destruction occurs due to incorrect calculations when determining the depth of the foundation, you need to try to make the structure deeper.

To do this, a trench is dug around the perimeter of the basement. Its bottom is well compacted and covered with coarse sand or crushed stone. Then, measures are taken for heat and waterproofing. After that, a concrete blind area is poured around the house.

If the lighthouses installed on the cracks burst within 2 weeks, you should try to strengthen the soil under the house. Do this after identifying the causes of shrinkage.

You need to dig a hole with an angle of inclination of about 35 degrees, insert a metal or asbestos-cement pipe with a diameter of 250-300 mm into it. A liquid cement slurry is fed through this pit until the soil is completely saturated with it. If the concrete has completely absorbed after a few hours, repeat the procedure again until the soil stops absorbing it.

After several days, beacons are installed on the cracks and they see if the deformation of the house continues. If the paper is torn, continue to cement the soil.

If the position of the beacons does not change or minor deviations occur, proceed to the next stage:

A trench is dug along the perimeter of the base, 200-350 mm wide.
Plank formwork is installed.
Steel pins are hammered in and a metal mesh is attached to them, which will serve as reinforcement.
Concrete with crushed stone or gravel is poured into the formwork.

Such a structure will be a reliable support for a crumbling house-building site. The method is suitable for strengthening strip, columnar, pile foundations.

Repair of the strip foundation

In case of severe destruction, it will be necessary to replace the entire foundation or its individual sections. To carry out such work, it is better to invite specialists with work experience.

The first step is to unload the base:

props made of solid wood are laid perpendicular to the foundation beds;
erecting temporary brick supports.

Replacement and overhaul of the brick foundation is carried out in parts, the area to be replaced should not exceed 2 m. Before work is carried out, beacons are installed on the walls, by which it is possible to determine the deformation caused by the repair work. The walls are fixed with struts.

Undermine the base. The walls of the trench are reinforced with boards, which are secured with supports from a bar.
They clean the released structure from earth and dust.
The walls around the perimeter of the foundation are trimmed with wood, according to the type of formwork.
A reinforced frame is mounted.
A cement-sand mortar is prepared with the addition of crushed stone. It is poured into the formwork layer by layer. Make sure that there are no voids. The solution is compacted with a bayonet or with a vibrator.

It turns out gravy of the foundation for the old base. The height of the new structure must be the same as the old base.

Sometimes more serious repairs are required. It includes the installation of a screed from a reinforced belt. Metal pins are drilled into the base so that their edge protrudes 20 cm above the surface. Reinforcement bars are welded to them or screwed with wire.

How to repair a brick foundation with your own hands, you can watch the video:

Before repairing the foundation of a private house with your own hands, you need to consult with specialists and choose the most suitable work technology for each specific case.

The walls of the house, built of bricks, transfer heavy loads to the foundation. If it is incorrectly calculated or built with deviations from the design, the case will end in the destruction of the supporting structure.

In addition to subjective reasons, there are also objective ones that are beyond human control. These include geological changes in the construction area of the building.

Repairing the foundation of a brick private house is the only way to save the entire structure.

The appearance of depressions and cracks at the base of the foundation is a sure sign of its destruction. However, you should be aware that during the settling period of the house, the foundation can also crack.

To check how dangerous cracks are, you need to stick beacons across them - strips of paper. If within 10 days the strip does not break, then there is nothing to worry about. The resulting voids are tightly clogged with broken bricks and concreted.

If you see that the beacon is torn, it means that the destructive processes continue, and you have to repair the foundation of the brick house as soon as possible.

And if the brickwork of the walls begins to crack, repair work must begin immediately.

Violation of the construction process is in the first place in the list of reasons for the loss of foundation stability. But it is also the most difficult to install, especially if the homeowner has bought a finished building.

Another factor causing the destruction of the base of the structure is an increase in the level of groundwater. Repair of the foundation of a brick house should be carried out in this case, taking into account the changed characteristics of the base on which the base of the foundation rests.

The third factor belongs to the category of design errors: the adopted foundation design may not correspond to the geological conditions.

An example of this is strip foundations erected on moving or dissimilar soils. The correct choice in such cases is the device of a pile or pile - screw foundation (pile - screw foundation. Its pros and cons).

Before proceeding with the repair, it is necessary to conduct soil studies. Making decisions on strengthening the foundation of a brick house without having the results of research on hand is a gross mistake.

This can lead not only to waste of money and effort, but also to aggravate the problem.

There are several ways to strengthen a damaged foundation:

shotcrete - with concrete;
by arranging a reinforced concrete shirt;
bored piles;
expansion of the sole of the base;
brick;
the classical method.

However, the basic rule applies to any of them: the foundation is strengthened only by expanding it. No disassembly of the existing structure should be performed.

The easiest way to do it yourself is to repair the foundation of a brick house in the classical way.

Its essence is as follows:

at the corners of the monolithic tape, pits are dug in the form of a cube, the side of which is one meter;
four frames with a cell of 20x20x20 cm are knitted from a reinforcing mesh;
prepared frames are lowered into pits and poured with concrete.

Concrete composition:

sand - 3 parts;
crushed stone - 1 part;
cement - 2 parts;
water - 2 parts.

Actually, on this, the repair of the foundation of a brick house with your own hands is considered complete.

If the strip foundation collapses along the entire perimeter, then it can be strengthened as follows:

a trench 200-350 mm wide is dug along the tape. Its bottom and outer wall are laid out with boards - formwork;
holes are drilled in the monolith with a step of 1 meter, into which steel pins are then driven;
a reinforcing cage is welded to them;
the trench is poured with concrete.

It happens that no measures taken on their own do not stop the destructive process. If new cracks appear on the walls, you need to call on professional builders for help.

And the most correct thing is to try to get advice from them before starting the repair work.

You may find the following articles helpful:

Video about repairing the foundation of a brick private house.

During the operation of houses, the main load falls on their foundation, and if the base of the building is made of bricks, then this load is simply enormous. The foundation must be able to support the weight of the roof, ceilings, partitions and built-up walls, which it distributes to the ground. Therefore, over time, cracks may appear on the base of the building, which indicate that it is necessary to repair the foundation of the house. This process is quite laborious, it has many nuances. Consider how to make repair work on the foundation of a house with your own hands.If the brick foundation is destroyed by more than half, it is necessary to dig a trench along its entire perimeter, and fix the metal mesh with anchors.The main reasons are shortcomings in the construction process, human activities and the influence of the natural factor. In the first option, a bad solution can be used or a poor-quality foundation structure can be created. In the second case, flooding of the base is quite possible, for example, with a water supply or sewerage leak. At the same time, the brick foundation and the soil under it gets wet, and in winter it freezes over.These reasons can cause:The main reasons for the destruction of foundations: a - gravity, b - soil resistance, c - frost heaving). 1 - subsidence of the soil; 2 - pushing out the foundation, 3 - frost heaving, 4 - overturning the foundation.The latter factor most often arises from the seasonal heaving of the soil, due to which the building is able to rise in the summer, and to sink in the winter. Despite the fact that subsidence and heaving of the soil can be avoided, the first factor must be reckoned with, especially in cases where the house has a columnar base.With large temperature differences that are observed in some latitudes, due to the heaving of the earth, it often happens that during the season the outer foundation can rise by 10 cm, and the inner one remains in place.The main signs of destruction are cracks and depressions. When cracks appear, the first step is to track the dynamics of their growth. This procedure is quite simple, so everyone can carry it out. For this you need:

Apply a creamy gypsum solution to the crack, which you can make yourself or buy ready-made in a hardware store.

Glue a sheet of paper to the solution indicating the date of this work.

Track dynamics on paper. It is best to follow the attraction of the whole year, but not less than 10 days, because the increase in cracks can manifest itself both in winter and in summer.

If the paper remains intact, then this indicates the stabilization of the foundation.In this case, the crack will not grow, therefore, repairs to the foundation can be carried out simply by sealing the crack with cement mortar.If the paper is torn, then the brick foundation is skewed.The reasons for this phenomenon may be:

design errors;

insufficient depth of the foundation;

violation of construction technology;

an increase in the level of groundwater;

lack of drainage and waterproofing of the base;

heterogeneity of soils at the site.

Whatever factor was the reason for the destruction of the base, repair work should not be postponed in any case. To carry out repairs to the foundation, it is necessary to prepare such tools and materials as:Schemes, lighthouses on cracks: a - gypsum (cement), b - glass, c, d - metal: 1 - crack, 2 - plaster, 3 - wall, 4 - gypsum, mortar.

drill;

welding machine;

shovel;

brush;

cement mortar;

deep penetration primer;

wooden planks;

fittings;

metal grid;

waterproofing material;

anchors;

sand;

crushed stone.

The procedure for repairing a brick foundation is as follows:

The base is dug up to the sole.

The exposed part of the foundation is cleaned of plaster, earth, damaged parts and the thermal insulation layer.

The cleaned area is treated with a deep penetration primer.

Holes for anchors are drilled in the base at a distance of 1 m from each other.

After screwing the anchors into the corresponding holes, reinforcement with a diameter of 12-15 mm is welded to them. A metal mesh with a coarse-mesh structure is mounted on it.

The formwork is installed at a distance of about 15 cm from the base.

The concrete mix is being poured. To create a solution, you can use cement grade M400.

After the solution has completely hardened, you can do thermal insulation and drainage of the foundation. In this case, it is best to make an annular drainage option.

The trench is filled with coarse sand and gravel.

If the base begins to settle, it is necessary to urgently stop this process. To do this, you will need the following tools and materials:Foundation reinforcement scheme.The first step is to dig a small hole near the foundation with an inclination of 35 °. Its depth should reach the base of the foundation. Then, an asbestos-cement or metal pipe with a diameter of 15-20 cm is mounted into the foundation. Cement mortar is poured through the pipe so that the ground under the base is saturated with it to failure. The filling process must be stopped only when the solution level stops decreasing for several hours. The filling of the solution must be repeated 2-3 times at intervals of 1-2 days.After the completion of the work, paper is glued to the crack, and a wooden plank is installed at the edge of the basement, along which the position of the foundation is fixed after pouring the cement mortar. If the subsidence does not stop, then it will be necessary to repeat the process of adding the solution to the foundation through the pipe again. In this way, you can fix the foundation of a private house.It is also worth noting that repair work on the brick foundation must be carried out at the correct time. Experts do not recommend carrying out repairs in the cold season for the following reasons: firstly, the soil in the cold season will be hard and frozen, and secondly, the cement loses its useful qualities at low temperatures. Therefore, if you want to repair the foundation with your own hands, you need to adhere to these recommendations.Arrangement of the foundation is one of the most important stages in the construction of a structure of any size, weight, configuration and purpose. The supporting structure performs several main functions: it accepts and ensures an even distribution of the loads created by the structure erected on top of it, and also protects the building from forces and stresses arising in the soil. Image - DIY repair of a brick foundation

The foundation perceives heavy loads, but sometimes it does not withstand them and collapses

Violation of the foundation construction technology in the future can turn into the most catastrophic consequences, up to the destruction of the building.Along with this, some problems that have arisen due to improper arrangement of the base can be corrected on their own, eliminating the risk of more serious damage. It is with information on repairing the foundation on your own that you are invited to familiarize yourself further.

DIY foundation repair

The list of reasons that can lead to deformation of the foundation is given in the table.

Table. Why is the foundation crumbling

Reducing the bearing capacity of the soil

The formation of voids in the soil

The presence of inclusions in the soil

Decrease in the bearing capacity of the support under the influence of groundwater

Violation of building technologies

Common foundation defects

The table provides a list of the most common defects in support foundations.

Table. Foundations defects

Destruction of the base of the log bath

Destruction of the foundation under atmospheric influences

Destruction of the foundation from FBS blocks

Cracks in a brick support

Pushing piles out of the ground

Deformations of the walls of the foundation

Layering of rubble masonry

Violation of the integrity of the side surfaces of the support base

Break of the supporting structure in height

Cracks in the slab part of the supporting structure

To determine the nature of damage, the causes of their occurrence, the possibility of self-elimination of defects and, in general, the need to perform any actions, it is necessary to perform a number of research activities.

Exploring the nature of destruction

The item on the need to take actions is included in the list for a reason. It is possible that the reasons that led to the occurrence of certain deformations of the supporting structure were of a single nature and will never appear again. For example, once every 100 years there was a very snowy and frosty winter, during which even the soil under the foundation was frozen. If such weather conditions are not typical for the area in which the building is located, all repairs can be reduced to one only elimination of cosmetic defects. But the diagnosis is carried out under any circumstances, because an outwardly insignificant problem can in fact be very serious and dangerous.

Determine if cracks are growing

The challenge comes down to the following: you need to understand whether the cracks continue to grow. If yes, the nature of the process and the rate of its development are additionally established.

The study is carried out using special markers (beacons).

The easiest way to make a lighthouse is plaster or cement mortar. It is most convenient to use a ready-made mixture for plaster. In general, you can use any material from this series that is not prone to plastic deformation after setting, i.e. the composition should be relatively fragile, but, at the same time, reliably adhere to the outside of the basement (aboveground part of the foundation).

We recommend using a plaster mixture. Prepare it according to the manufacturer's instructions and apply a 0.3-0.5 cm layer to the crack. The length of the marker is about 100-120 mm. The composition is applied so that the crack is approximately in the middle of the strip.

We use plaster mix

Complete each crack with at least two markers. Make one near the beginning of the fault, the second - at its end. The principle is shown in the image.

Marking house cracks and possible reasons for their appearance

Apply the plaster mixture with a narrow trowel. First, it is necessary to clean the surface of the base from dirt in order to ensure the highest quality adhesion of the beacon to the base.

We clean the plinth from dirt

Without waiting for the marker to harden, print a thin horizontal line on it. To do this, it is enough to gently press the side edge of a spatula, metal ruler or other suitable device into the mixture.

Number the markers by embossing the numbers with a nail or a toothpick.Record in a notebook the date of the study and the serial numbers of the beacons.

Then watch. If the marker cracks, the foundation crack continues to widen. Every few days (the main thing is that equal time intervals are maintained between observations), measure the width of the crack on a plaster marker and record the results in a notebook. Such observations will help you draw conclusions about the rate of development of the deformity and predict the possible outcome.

Monitor the status of the marker

Follow the strip left with a putty knife / ruler. If parts of this mark are displaced in relation to each other, there are not only cracks, but also settlement of the structure. Common sediment varieties and their relationship to fracture patterns are highlighted in the above image.

This event is characterized by more pronounced information content and increased labor intensity. The bottom line is to prepare several (at least two) pits near the foundation. The pit is a pit with a depth to the base of the support and a length of about 100 cm. Choose the width individually, so that in the future it will be convenient for you to work with the foundation. To prevent the earth from collapsing, you can support the walls of the pit with unedged boards.

The described pit looks like this.

Pit for inspection of a brick foundation

The dependence of the pit dimensions on the features of the foundation is presented in the table.

Table. Recommendations for the selection of pit sizes

No matter how solid your home was, time spares nothing, cracks appear one after another and you have to start restoration work. DIY brick house foundation repair to produce is not easy, but real. Before you do anything, you need to determine the cause of the damage that has occurred. There are cases when unfavorable natural conditions lead to one-time damage, as in the photo, which does not progress and does not recur anymore, so we start with the diagnosis of damage.

The easiest way to determine if a house is currently being destroyed is to install plaster or paper beacons. Gypsum is applied to the cracks in at least two places and observe what happens to them. If they remain intact, then it is enough to bring beauty and make cosmetic repairs to the facade. If you have cracked, repairing the foundation of a private house with your own hands is waiting for you.

A more complex method, which will allow you to more accurately determine the problem, is to dig holes. Having chosen the place with the most damage, you need to dig a hole near it. Thus, you will see the material from which the foundation was laid, the degree of its destruction and the presence of waterproofing. If the site has a high level of groundwater, then they will fill the hole.

If the foundation collapses as a result of flooding, then you will need a drainage system or drainage if groundwater is the culprit. The drainage system is made in the form of a rebound barrier, which, with the help of grooves, directs the flow of water from the house, and blind areas, from 80 centimeters in size.

The foundation can collapse if its base lies in the zone of soil freezing. Moreover, heaving soils will cause special damage. In this case, you need to insulate the foundation. A trench is dug along the foundation, down to its bottom. The pit is partially covered with material that does not expand in the cold, no matter how much water it absorbs, for example, rubble or sand. The remaining space is covered with insulation, a blind area is arranged on top.

Strengthening the foundation of a brick house is the most difficult type of work during its restoration. They make it in small areas so as not to provoke destruction. The foundation is dug in, preferably on both sides, a new layer is poured under it, at the same time reinforcing the screed.The process of repairing the foundation of a brick country house with your own hands is much more difficult than performing similar work to repair a wooden house.

It is better, of course, to entrust this work to specialists, and to do a more creative and easy job yourself.

For clarity, below you can watch a video of repairing the foundation of a brick house with your own hands.

Did you like the article? Show it to your friends:

Well, I don’t know Volodya, it seems to me that the base can be strengthened. But what about the historical buildings, they are not demolished, but strengthened all the same. For example, the Bolshoi Theater in Moscow, they made several floors down there under it. I think they strengthened the foundation thoroughly there, of course, and the budget there is too much, not like for a country house

I myself saw how the foundation is being repaired in the city. In short, they are drilling holes in the foundation with some kind of long drills, and so on along the entire perimeter, in my opinion. And they make a lot of such holes, every somewhere 15-20 cm. Then some kind of solution with reinforcement is pushed there, which subsequently hardens. Well xs is it reliable ?! Maybe it makes sense to demolish the entire structure, if it is very dilapidated and life-threatening and, accordingly, to build everything from scratch? It seems to me that such an imaginary strengthening of the foundation will do nothing ...

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Do-it-yourself repair and cracks in the foundation of an old wooden country or private house: step-by-step instructions + Video

It is not uncommon for the owners of private houses and cottages to encounter the problem of cracks in the foundation. Cracks can appear for several reasons. Let's take a closer look at them and how to repair the foundation of a private house.

They can be conditionally divided into two: deterioration in the bearing capacity of the soil and deterioration in the bearing capacity of the foundation itself.

In the first case, this can happen due to flooding. When saturated with water, some soils lose their bearing capacity. Also, during flooding, soil erosion can occur. This happens in areas where the soil consists of sandy and sandy loam layers.

Also, subsidence of soil consisting of limestones and marls is possible, if for some reason the groundwater has acquired acidic properties, which destroys calcites.

Soil subsidence as a result of mine workings, pumping out of artesian waters, oil and gas production have become very frequent occurrences.

The second reason is the deterioration of the bearing capacity of the foundation itself as a result of factors affecting it, leading to its destruction.

Ground water is one of the factors; ordinary water can cause corrosion of the metal and destruction of the base. Nowadays, acidic and alkaline groundwater is not uncommon, which can destroy the foundation of a house in a few years.

A frequent violation is not observing the depth of the foundation. The foundation laid to a shallower depth than the freezing of the soil is affected by frost heaving of the soil - this is a force that can break the foundation monolith and lead it to cracking.Also, the reason for the destruction of the foundation is often the use of poor quality materials and savings on them. Image - DIY repair of a brick foundation

To determine the causes of the destruction of the foundation, specialized firms can be attracted, but the cost of such work will be very high.

Do not despair, there are many ways that will allow you to determine the causes of the destruction of the foundation inexpensively and with acceptable accuracy.

This study is carried out in order to determine whether the crack continues to grow, the rate of increase, the nature of the process.

For this, the so-called beacon markers are used. They are made of gypsum or cement mortar with the addition of gypsum. It is very important that after drying it does not stretch and be brittle enough. It is also important that the mortar is firmly attached to the surface of the foundation, without peeling from it. For this, the base is pre-cleaned.

Having prepared a little composition, it is applied to the crack, the layer thickness is made 3-5 millimeters, ten fifteen centimeters long and three five centimeters high.

Place at least two markers per crack. One marker is placed near the beginning of the opening, the second near the end.

After applying a marker, a thin longitudinal line is made on it, it can be made either with a metal ruler or with a spatula. Markers are numbered. The number and date are recorded in the measurement log.

If the process of opening cracks continues, then the beacon also gets a crack. Making measurements of the crack width at certain intervals and making entries in the measurement log, they make a conclusion about the deformation rate of the foundation, about the part of the house that shrinks. They also make a forecast about further destruction of the foundation.

The second method of work on the study of the foundation is the method of digging pits.

Next to the foundation, a hole is dug one meter long and deep to the base of the foundation (pit), the width is determined by the convenience of digging, taking into account the conditions for the production of slopes to prevent soil collapse, or strengthen the walls with boards.

At least two pits are dug in the most problematic places. The method of digging pits is the most informative. Using this method, it is possible to determine the depth of the foundation, the presence and condition of waterproofing, the material from which the foundation is made, as well as the presence of groundwater.

If there is a presence of groundwater, then it is possible to determine what properties they have. To do this, use ordinary litmus tests, which can be purchased at garden stores.

After determining the research and determining the causes of the destruction of the foundation, they begin to repair the foundation with their own hands.

The cause of the deformation can be eliminated, and the destruction is not significant and only cosmetic repairs may be required.

Also, sometimes the deformation of the foundation is so serious that it will not be possible to repair it with your own hands. Or it will be necessary to repair the foundation, the price of which will be comparable to new construction.

There are two types of flooding: the first is caused by the influx of rain or melt water. The second is the rise in the level of groundwater.

In the first case, it is enough to create a bump barrier that directs water past the house, and the construction of a blind area at least 80 centimeters wide.

In the event of a rise in groundwater, it is necessary to carry out dewatering. For this, drainage is done.Drainage is a drainage system made in the form of a circuit with pipes laid in a trench and covered with gravel around the house. Drainage of excess water leads to the storm sewer.

Deformation caused by frost heaving.

This type of deformation occurs when the foundation is laid above the level of soil freezing. The amount of deformation depends on the degree of heaving of the soil. Both significant and small deformations are possible.

To eliminate freezing, it is necessary to insulate the foundation. Insulation is carried out to the bottom of the foundation sole. To do this, a trench is dug around the perimeter of the house, then the foundation is waterproofed, the side wall of the foundation is insulated and covered with screenings or small rubble. A layer of insulation is laid on top of the backfill and the blind area is poured.

In case of significant destruction of the foundation, while eliminating the destructive factors, the foundation is also repaired. Image - DIY repair of a brick foundation

One of the most popular methods is considered to be the foundation liner. The essence of the method is to deepen and increase the area of the sole support. It can be implemented in two ways: with partial replacement of masonry and complete replacement.

The liner is carried out with the help of grips in separate sections with a length of one and a half to two meters, which depends on the depth of the foundation strength. When deeply laid, the grips are reinforced with uprights and beams.

Further, concreting is carried out, less often rubble laying is performed. The opening and concreting of the grips is carried out on the condition that the expanded grip is protected by the adjacent one.

The formwork is removed at the end of concreting. Metal fasteners are left in the concrete.

This method is advised to be used with a large volume of structures to be strengthened, a shallow depth of foundation, a deep finding of groundwater.

It is important to comply with the production technology of work to prevent the resumption of the destruction of the foundation.

The clips are side attachments made of concrete blocks, connected to the old masonry.

Wide clips are not reliable and durable, difficulties also arise during anchoring, the impossibility of transverse through reinforcement leads to the conclusion about the rationality of their use.

The most preferred are two-leg, torque-free ferrules.

This method allows not only to strengthen the foundation, but also part of the wall.

For strengthening by the broadening method, the foundation is marked out for grabs. The length of the marks is 2-3 meters.

The base of the foundation is cleaned of debris. I am digging a trench around the perimeter of the house, the bottom of the trench is covered with rubble.

Holes are punched in the plinth for transverse reinforcement. A longitudinal beam is placed between the plinth and the wall. Further, formwork is installed in the trench and poured with concrete.

In conclusion, I would like to say that foundation repair works are especially dangerous. This type of work must be performed with extreme caution, applying all safety measures and not endangering either your life or your assistants.

Video (click to play).