Raising a house with building up links. How to lift a wooden house: description, video and prices. In what cases is it necessary to raise a wooden house?

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Frequent causes of deformation are loads on individual segments of the foundation during the construction of verandas or superstructures, changes in the level of groundwater, destruction of a wooden foundation or cracking of a brick (concrete) foundation. Ice that thaws after frost in shallow areas of the soil is also harmful. On heaving soils

The foundation may rise or fall unevenly with temperature fluctuations. If the foundation of the house sank and there is a need to level it

, then you will have to raise the building to a certain height so that you can remove or restore the old one and form a new foundation. Need to start with props 5 corner with several jacks. A pair is enough for a wooden home

-ton devices: The angle should be raised 1,5-2 on

centimeter and immediately place a temporary stand under it. It can be wood or metal. The process needs to continue , placing beams around the entire perimeter ( Picture below 3-4 ). On long walls under the lower crowns it is better to arrange

support points so that the frame does not sag under its own weight. You cannot lift more than 2-2.5 cm at a time

, since such a difference in height can cause distortion of the structure or even partial destruction. Don't get your hopes up only for jack 5-7 . Every

millimeters of rise, immediately lay supports. If the hydraulics fail, the walls will hang on their supports. Make sure the lift is installed on a strong foothold

, and not on a collapsed part of the foundation or on a thin plank laid on bare ground. After the building has been raised to the desired height, it is necessary build concrete supports at the corners

level with the height of the future foundation:

Formwork is installed around the perimeter of the house, fastening reinforcement is installed, and the entire structure is filled with concrete. Top of the new foundation should not reach directly to the log house

, because after complete filling it needs to be waterproofed with several layers of roofing felt. After this, the frame can be lowered onto a new base. 30-40 Wooden foundations (chairs) sometimes have to be replaced due to their rotting, especially if the groundwater is high (

cm from the surface), which creates a zone of variable humidity. The pillars can be identified by tapping the logs with the edge of an ax or shovel. Rotten wood is immediately visible.

The support needs to be urgently changed if the logs have rotted by half or more than half 50 % of the initial diameter. In place of the damaged butts, new ones are placed, or brick (stone, concrete) pillars are built, and then the distance between them is filled with cement-based mortar.

Bookmark depth The new foundation should be the same as the old one, but not less.

In places where chairs are replaced it is necessary disassemble part of the base, and free the logs from all nearby and adjacent building elements (usually logs and floor boards):

Temporary support is mounted at a distance 0,6-1,2 meters from a rotten chair under the lower crown of the house, and it is better to do this on both sides. As supports, you can use beams or the same butts, but a little shorter.

It is necessary to lift the walls one by one using a jack or a long lever so that the frame crown is freed from the tenons of the foundation chair. Then you need to place temporary supports under the logs and wedge them.

The damaged chair must be removed and a new one installed in its place. The depth of shrinkage of the old one should be added to the length of the future support. After this, you need to lower the wall so that the tenon of the new chair fits into the groove of the crown.

Installing a new wooden chair, it is impossible to avoid cracking of plaster, distortion of window and door openings. Therefore, it is better to replace wood with stone or concrete pillars in order to reduce the need for reconstruction.

Sometimes required replacing rotten bottom logs at home, this process can be observed on an amateur video:

Main works for laying a new foundation are as follows:

The old crumbling foundation is divided into sections according to 1-2 meters.

A pit is dug at the marked points, the walls underneath are strengthened, and the fragments of old supporting structures are removed. In their place, a new segment of the foundation is being built.

The pit for future support is compacted with crushed stone with a layer of about 10 cm.

New foundation section be sure to tie it with the old one. To do this, use concrete pouring or masonry.

Reconstruction should begin with the most destroyed segments.

Construction of a deep foundation on non-heaving soil according to SNiP standards

The picture shows a diagram of the installation of a deep foundation on non-heaving soil according to the standards SNiP:

Foundation. Cement-concrete mixture.

backfilling. Made of sand and crushed stone.

Support cushion. Consists of crushed stone. Depth: 50-70 cm.

Cushion width. Minimum by 20 cm wider than the thickness of the foundation.

Depth. Makes up 120-150 cm.

When removing old masonry, materials should be visually sort by suitability for use in a new one. If the building is built on a shallow support, then after leveling and building up it is necessary to install drainage, a blind area and a protective covering to prevent water from penetrating under the base of the foundation.

If the house deformed or began to collapse from the uneven rise and fall of the pile foundation, which can be caused by heaving of the soil during severe frosts, then after a new foundation has been laid, the soil should be protected from freezing so that the process of heaving and pushing out stops.

Protection consists in covering the ground around the foundation with a layer of thermal insulation.

Suitable for this straw, sawdust, expanded clay, expanded polystyrene, slag and other building materials. You can also arrange ground heating, laying a pipe manifold near the pile foundation through which hot water or steam will pass.

If soil freezing cannot be prevented, then the destructive zone near the base should be reduced. To do this, in winter or late autumn, holes are dug around the pile foundation. 60-70 % of freezing depth. Thanks to this, the earth “woodens” gradually and does not block the access of groundwater to the foundation.

Piles several times coated with bitumen or antifreeze lubricant, then they are wrapped in several layers of waterproofing. A protective composition of petroleum products is also placed between these layers. The last operation is to fill the hole with non-heaving soil.

If on the foundation no critical damage, then there is no need to change it. This is too time-consuming and financial. It is enough to add the solution. To perform the work you must:

Dig a trench along the entire perimeter of the base.

Clear damaged areas from cement chips.

Screw reinforcement mesh to the foundation with anchors.

Build formwork of the required dimensions.

Fill trench with concrete formwork.

In the case when the house is standing on a brick base or on pillars made from similar material, you will have to spend much more resources. The algorithm is as follows:

Dig a shallow trench around the foundation.

Put away bricks that have cracked and come loose.

Insert anchors in masonry on one or both sides.

Connect the ends of the anchors are connected to each other with reinforcement (welding).

Mount formwork taking into account the dimensions of the base.

pour There is sand at the bottom of the trench and gravel on top.

Install reinforcement frame around the perimeter.

Fill formwork with cement concrete.

Find out how to increase the strength of a solution using additional components in our article - the purpose of a plasticizer for concrete: making the composition with your own hands.

Carrying out repair and construction activities will not only strengthen the foundation, but also increase the support area. As a result, the house will remain standing without major repairs for some time. 10-15 years.

How to raise a wooden house on jacks if there are problems with the foundation that requires serious repairs or complete reconstruction? There are several methods for lifting a house, most often a jack is used for this, but it all depends on the size, area of ​​the building, technology and materials of construction (logs, timber or frame). There are a number of features that are important to consider when moving a house to another place or when raising it to a certain height during repairs.

How to choose a lifting method?

Choosing a lifting method is not easy and is influenced by numerous factors including:

• the total weight of the structure and the shape of the house;
• area, length of walls, number of storeys;
• type of house (timber, frame, log house);
• the age of the building, its general condition, the presence of damage to the walls or their absence;
• the structure of the soil on which the house stands, its type, moisture content;
• time of year of planned work;
• features of engineering communications that are supplied from the basement to the first floor;
• type of foundation, its general condition, method of connection between the first crown and the base;
• the presence of a usable basement, ground floor or lack thereof;
• the purpose of lifting the structure;
• features of the porch structure, its connections with the facade wall.

Not all of the factors are listed; each building may have certain features, without which it is impossible to begin lifting the building. That is why experts advise turning to specialists to organize this process. It will not be possible to independently take into account all the details for lifting a structure without having the appropriate experience.

To raise a wooden house, you can use the following methods:

1. A jack is a common lifting tool; it can be called universal (experts advise using it when raising a house using the slatted method).
2. Slings/ropes - a method where slings are placed under a structure, after which it is raised to the required height. This method is acceptable only for houses, outbuildings, and garages that are small in size and weight.
3. The crane is used when it is necessary to move a building to another location. If transportation is required, special low-floor trolleys are used. The structure must be carefully secured, and the transportation itself must be coordinated with the relevant services, including road traffic.

Features of raising a house: difficulties of the process

The process of raising a house is somewhat complex. It is almost impossible to lift a structure without damaging it, so the work requires inviting experienced specialists and carpenters. It is important to remember that with the slightest mistake, the structure can “crumble”. It is necessary to strictly follow the technology so as not to damage the walls and structure, especially for internal partitions, windows and doors.

When planning, it is important to take into account the load that will fall on each corner of the house. To do this, the approximate weight of the building should be divided by 4 (or by another number of corners of the house). Based on the data, the cross-section of the beam is selected, with which the house will first be supported. When using a jack or slings, you must immediately select the points where they will be located, be sure to take into account the type of walls and the general condition of the lower crown. When using a jack, you need to make holes in the bottom log for its installation. For slinging, grooves are cut, the width of which will be slightly larger than the width of the tape.

Additionally, a niche is cut through which the first jack will be installed. It is needed for any type of foundation, except columnar. It is necessary to place metal plates that are thick enough under the head of the jack so that it does not pierce the wood. If the condition of the walls is not the best, there are traces of rot or dried out areas, you need to contact specialists to accurately determine the lifting method.

It is important to control the height when lifting a wooden structure

For this purpose, a wooden stand with marks marked on it is used. The first mark is applied to the wall of the house near the rack, the second - on the block, so that you can precisely control the height of the rise at each corner of the house. It is impossible to use the jack's marks for such control, since under such huge loads it begins to sag, and the marks will be incorrect. When lifting a house, one more very important nuance must be observed: all corners must be raised simultaneously to the same height, that is, the lifting must be strictly vertical. If the slightest distortion occurs, it is necessary to stop the process immediately, then eliminate the error and only then continue working.

Rules for lifting a building

To raise a house quickly and without loss, you must follow certain rules:

1. To lift a house, you cannot use less than 2 jacks at the same time. They should be placed at opposite corners of the building; during operation, it is imperative to control the lifting height.
2. Initially, only one jack should be used at the corner of the house that has sank significantly relative to the others. This will allow you to initially level the structure, and then begin further lifting work.
3. At a time, the corner of the building can be raised to a maximum height of 4-6 cm, then this corner is fixed with the help of supports. The second corner is raised to the same height, secured, and only then work continues.
4. The house is fixed at a height using ordinary boards or special timber benches. The bench is a durable structure, the beam, which is tilted at an angle in a perpendicular position, is fixed by supports located on opposite sides of the bench.

Raising a wooden structure is a complex process that can only be carried out strictly in accordance with established stages. It is recommended to trust planning to specialists, who will give recommendations with detailed schemes for completing the work.

Raising a wooden house using a jack

Initially, you should determine the maximum and minimum heights for raising the house. It all depends on the condition and type of foundation, but usually the height does not exceed 2 meters. The following tools are used for measurements:

Scheme of raising a house using two jacks: 1 – a rail with a mark of the lifting height; 2 – foundation (jacks are not indicated).

• level for determining height differences;
• building level;
• metal tape measure (can be replaced with a laser one);
• wooden posts with marked markings.

Afterwards, the dimensions of the house, its approximate weight, the density of the wall material are determined, and based on the data obtained, the type of jacks, slings or the power of the construction crane is selected. Most often, medium-sized buildings, for example, country houses, small country houses for year-round use, and outbuildings are jacked up.

How to lift a house with a jack? It is necessary to remove furniture, equipment, things from the building, remove interior and exterior doors, and protect window openings. Inside the house itself, communications are disconnected, gas and water are cut off, and electricity is turned off. It is necessary to disconnect the porch structure, stove pipes and other elements that may be damaged from the facade.

The following tools may be required for dismantling: crowbar, chainsaws, wedges, sledgehammers, etc. The jacks used are powerful, their load capacity must be at least 10 tons; Sheet metal plates measuring 500*500 mm are used as supports. The lower rims are fastened with metal brackets, the angle of the jack is determined, after which grooves or holes for the tool heads are prepared. After this, the first vertical offset of 1.5 cm is performed for one corner, the opposite one, and the height control is performed. The height is achieved gradually, you cannot rush, every step is controlled.

Raising a wooden structure is a complex and responsible process, which requires the involvement of only experienced specialists. During planning, the weight, size of the house, and its general condition are taken into account. Work on design calculations based on construction technology is mandatory.

How to lift a house with a jack - this question interests a large number of home owners who are going to carry out repair work and are remodeling the building. Of course, at first glance, performing such a task is very difficult and problematic, but it only seems so. The process is actually very simple. The only rule is to take into account all the standards and carry out the work accurately. It is worth noting that you need to prepare for lifting with a jack, read the instructions and specialized literature, and then gradually and without undue haste begin the task. In our article we will find out how to raise a house correctly.

Materials and tools for work

Before you start raising a house with your own hands, you need to ensure that you have the necessary tools:

• Special slats;
• Steel plates or metal corners;
• A metal pipe that is used as a roller;
• Material for trampling a raised building, in most cases timber;
• Hydraulic tools;
• Funnel device.

Attention! For work of this purpose, special cargo machines that have a lifting capacity of up to 10 tons are perfect.

Preparatory stage for lifting

Before you raise a wooden house, you need to prepare for work. The first thing to do is to drive a batten into each corner of the building. Then we take a hydraulic level, which has a rubber hose connected by glass tubes 25 cm long. Using a funnel, pour liquid into the level hose, so that there is the same amount of water in all tubes.

Attention! In order to facilitate the process, you can paint the liquid with potassium permanganate, then the visibility of the level will be obvious.

We use a level to mark the height on each rail that is involved in raising the wooden house. To do this, we need to connect the tube to the rail, that is, connect them together. The second pipe must be attached in the same way, but to other pipes. It is worth noting that the process requires constant monitoring of the liquid level, which should not differ. But, if you notice a difference, this indicates the presence of air bubbles inside the hose.

Attention! In such a situation, the device cannot be used for work.

This problem can be corrected by using a flat platform that is slightly inclined. After refilling the funnel with liquid, you need to go around the house, placing marks. Next, return to the pipe, which is fixed. In case of accidental spillage of water, the process must be continued. If you do not do this, the house will not rise correctly on jacks.

Raising a house

Before starting to raise the building, it is necessary to completely prepare the area for construction where the jacks are installed. Place panels on all horizontal lines of the site. Support points must be maximized. We place the plate between the jack's patch and the lower crown of the room. This action will make it possible to save the log from deformation that can occur from hitting a penny. Afterwards we perform a test lift.

Attention! In case of vertical displacement of the jacks, the support must be adjusted under the structure.

When lifting a standing house, it is necessary to maintain a height of up to 4 cm. Such work can be carried out by at least 2 people, as it can be done independently. Next, we lay pads under the building, which will later help release the jacks. Afterwards, we lift one side, approximately 8 cm high, and place pads under the building.

We have already figured out how to raise the corner, now we need to do the same work on the other side of the building. Having repeated the lifting process, we return to the other wall. After the jacks are installed, we lower the curtains. If this is not done, then there is a possibility that the tool will be turned out from under the building. This description of the actions is repeated until the building rises to the desired height. Step-by-step instruction of actions requires compliance with the following norms and rules:

• If you have any doubts about the correct installation of the jack, it is better to stop the process of lifting the building;
• You already know how to raise a wooden house with your own efforts, but you should not forget about basic safety rules. When performing work, you must not crawl under the building. It is worth noting that this requirement also applies to individual parts of the body.

Attention! In case of lateral shift, it is necessary to mount the tool on a lower part of the building. The installation will be different as the position must be inclined.

If it is not possible to raise a building made of timber horizontally, then choose the lifting angle a little less, for example, 45 or 60 degrees. Many people doing the work should know that there is no need to rush, as it is necessary to avoid pitching. By violating this requirement, the building can slide and spin around the pillar that stands on the base. Wood requires a precise sequence of work.

You've probably wondered how much it costs to raise a house using the services of professionals. Of course, the cost of such a service is not very cheap. For this reason, it is better to study the recommendations and rules yourself, and then do all the work yourself. After looking at a large number of videos and literature, we decided to highlight for you the most important tips that will make the procedure easier. So:

• When the gap reaches 15 cm during lifting, this means that you need to take duralumin gaskets and lay them in the gap;
• At the points where jacks are installed, it is imperative to analyze the condition of the wood. If the quality is poor, then there is a theoretical probability that the timber will not withstand the stress, and this can cause emergency situations.
• In some situations it is necessary to use narrow tools. With such equipment, you need to install an additional bracket at the installation site.
• If there is a brick oven in the building, it is necessary to constantly monitor the position of the pipes and roof.

Attention! There are times when lifting a building is mandatory, but you don’t have the right tool. If such a situation arises, then you can seek help from the nearest depot, where workers absolutely have this tool.

In this article, we examined in detail the process of raising a building, and found out the fact that it is very simple and easy to complete such a task on your own. But remember about safety rules and careful attention to work.

Old houses or new ones, built on weak soils or on poorly made foundations, are often susceptible to subsidence into the ground, especially in clay, loose soil and in the vicinity of groundwater. For such situations, it is necessary to raise the house and replace the foundation. We lift the building using jacks with a lifting capacity of 30 tons.

We carry out the work carefully, especially for houses, bathhouses and other buildings whose walls are made of logs (logs). This type of log building (corners, log connection points) has mobility, which we compensate for by securing it with brackets.

When carrying out repair work, the old foundation is often removed and a new one is poured, or the lifting is carried out on screw piles with I-beams. The second option is less popular, since the places where screw piles are screwed in are located next to the old foundation, and not under it, and the cost of I-beams increases its cost. The second option is to raise the country house and pour a strip foundation, where it can be built up with bricks and blocks. This option is aesthetic and there is almost no difference in price.

How much does it cost to raise a wooden house

The cost of lifting work depends on the type of house and its height. The prices are shown in the table.

Cost estimates for foundation replacement work

In addition to additional services, we carry out replacement of the lower crown, disassembly and assembly of floors, joists, ceilings, and dismantling of furnaces.

The average repair time is:

• Lifting onto screw piles with I-beams – 5-7 days;
• Lifting and erection of a strip foundation – 7-10 days.

Specialist visit

Before concluding a contract, a specialist will visit your home, where he will inspect the condition of the foundation and advise you on the range of necessary work. Afterwards he will announce the cost of raising the house and reconstructing the foundation. The price for departure is equal to the cost of gasoline on the way to you.

The subsidence of a wooden building or its individual parts indicates an improperly constructed foundation or one that has lost its operational characteristics. The problem is not insoluble and in most cases does not even require the use of specialized construction equipment. You can correct the situation if you know how to raise a wooden house on jacks with your own hands, determining their number and places for installation. Under a vertically moved building, a new foundation is installed or the old one is repaired, and the time to complete all the work, when choosing experienced specialists, does not exceed a week.

Reasons for raising a building

Among the main reasons to raise a wooden house are:

• reconstruction of the crown, which was beginning to collapse;
• the need to partially fill the foundation or completely replace it with a new one;
• moving the building to another location.

For the latter type of work, in addition to jacks, you will also need special lifting equipment. When moving a house, you cannot do without the services of qualified professionals. A simple lifting and subsequent return to the place can be carried out by the owners of the building on their own, with the assistance of assistants from among friends or relatives.

When planning work, first of all, they determine how many jacks are needed, the lifting capacity of the equipment and in what places it is installed. The criteria for selection and calculation may include the following process features:

To lift an average-sized building, 6 mechanisms of 5–10 tons each are sufficient. Two-story structures require the same amount of equipment to replace the base, but with a load capacity of up to 20 tons. When lifting one short wall, you can limit yourself to 2 lifts, for long ones you will need 3. One A jack will be enough only in one case - for minor and relatively quick repairs of a corner that has sagged relative to the rest.

Preparing for the climb

Before you begin to raise the building, several preparatory steps are performed:

1. They hammer in 2 slats at each corner of the building, marking the height of the wooden house on them using a hydraulic or laser level.
2. Furniture, household appliances and other large objects that can increase the overall weight of the structure and be damaged during lifting are taken outside the building.
3. They reduce the weight of the building by dismantling the floor covering - a mandatory step if there is a stove in the house, which also requires the removal of the sheathing and roofing around the chimney.
4. Prepare the walls, which are recommended to be strengthened using boards attached perpendicular to the plane of the enclosing structures.
5. Door and window blocks are dismantled, protecting them from deformation.

It is not necessary to prepare the walls of a frame building, but it is advisable. The result of strengthening is the prevention of the appearance of cracks, deformation of structures and distortion of the entire frame as a whole.

Main part of the work

One of the step-by-step instructions for raising a wooden building with jacks looks like this:

1. In pre-designated areas of the structure, areas of fairly densely compacted, and therefore resistant to subsidence, soil are selected, in which holes are dug slightly larger than the lifts. For a more convenient location of the jack and its supports, the base of the house is partially disassembled;
2. To increase stability, a metal plate is placed under the base of the mechanism. A second similar part is installed between the head of the lift and the crown of the house, increasing the pressure area;
3. The wooden structure is gradually raised - for old houses it is not recommended to do this quickly and increase the height too much. The maximum recommended height for a one-time lift with one mechanism is 100 mm;
4. After lifting to the same height, supports are placed on all sides under the bases of the mechanisms. For this, boards, logs, beams, building blocks and even bricks are prepared in advance;
5. At the final stage, when the optimal distance between the foundation and the crowns has been reached (2-3 beams or blocks, 4-6 bricks), leveling is performed. The easiest way to level the height is to immediately select the same supports.

After the lifting is completed, the house should not be supported by jacks. All mechanisms are replaced with the same blocks or bars. Careful completion of all stages, the correct number and location of installation of lifts will allow you to move the structure upward without distortions or deformation.

Video: How to raise a house and replace the foundation underneath it

Selection of performers

When making a decision about the performers of the work, they choose between lifting the house with their own hands and contacting a construction company. The first option is cheaper, but takes a lot of time and effort, increasing the risk of an error, the cost of correcting which will significantly exceed the salary of specialists. When choosing the services of professional builders, the likelihood of a positive result is much higher.