wells

Is it possible to make a door in a load-bearing wall. How to make a doorway in a load-bearing wall: expert advice

We note right away that it is not recommended to carry out such work on your own, because internal walls in panel houses, they are predominantly load-bearing, so unskilled intervention in the capital structures of the house can violate the stability and strength of the entire building and lead to collapses.

Therefore, if you plan to make an opening in the wall of a panel house, then you should know that this event refers to redevelopment, which must first be coordinated with supervisory authorities - with local governments in the Moscow region and housing inspection in Moscow.

To make an opening in bearing wall panel house according to the law, in the redevelopment project, which will be submitted for approval, engineers will include a special section for strengthening the opening made with metal structures (drawings of the opening, a diagram of metal structures, cuts, sections, assemblies, a bill of materials, conditions and sequence of work).

As we have already noted, most typical panel high-rise buildings have internal walls that are load-bearing, made of reinforced concrete. Therefore, if you are going to make an opening in the load-bearing wall of a panel house, you need to take care of compensating for the weakening of loads by installing a reinforcement frame.

For reference: to make an opening in the curtain wall of a panel house additional reinforcement wall panel not required.

Therefore, in order to make an opening in the wall of a panel house, it is necessary to invite specialists in diamond cutting with SRO approval. Since after the work they will need acts of hidden work to strengthen the opening to present them to the commission, which will accept the repair. And these documents can be drawn up and signed only by a licensed contractor.

Now a few words about the progress of the work. You can make an opening in the wall of a panel house using diamond cutting. This technology for processing hard materials has a lot of advantages compared to a percussion tool - a hammer drill, a sledgehammer or a jackhammer.

Firstly, when working with a diamond tool, a perfectly smooth cut is obtained along the entire contour of the opening, which further simplifies the work of mounting the reinforcement frame, which has a U-shape.

Secondly, the technique of diamond cutting of an opening in the wall of a panel house significantly reduces the time construction works Everything is done much faster.

Thirdly, the minimum vibration exerted on the treated surface does not have a devastating effect on the entire wall panel.

Fourth, when processing a panel wall with a diamond tool, much less construction dust and garbage.

Besides, in project documentation redevelopment always indicates the way in which you can make an opening in the load-bearing wall of a panel house. And this method is diamond cutting.

Before proceeding directly to the opening device, temporary racks are installed between the floors. This will allow you to correctly redistribute the loads exerted on the panel wall before they are taken over by the reinforcement frame.

The removed part of the plate is cut into segments convenient for transportation, which are removed one by one. However, depending on the situation, other methods of dismantling may be used.

As an option, removing a large fragment of the wall at once, laying it on a shock-absorbing material (for example, on tires from a car) and breaking it into smaller blocks using a percussion tool.

After the dismantling of the opening is completed, the builders begin work on strengthening the remaining part of the wall panel. To do this, a frame is mounted, consisting of metal profiles, selected in accordance with the dimensions of the opening and rigidly connected to each other and to the wall panel.

To strengthen the opening in the wall of a panel house, different types structures - it depends on the type of house and the thickness of the wall. And the method of strengthening, when an opening is made in the wall of a panel house, is determined by the author of the house project.

In Moscow, the authorship of most panel residential buildings belongs to JSC MNIITEP. This design institute strongly recommends reinforcing the openings in the houses designed by it with a frame of unequal corners, which, compared with channels closer to the edges of the opening. Accordingly and mint the design of the corners is much simpler.

The corners are attached to the wall with reinforcing bars or anchors and welded together using transverse steel wedges. The vertical components of the frame are mounted on steel sheets - support feet, anchored to the ceiling.

All voids between the frame and the panel wall are filled with cement and sand mortar to ensure that the concrete and metal structures work together.

It would not be superfluous to remind you once again that in order to make an opening in the load-bearing wall of a panel house, you need a technical opinion from the author of the house project and redevelopment project from any design office with a license (SRO approval).

Many homeowners, planning a thorough apartment renovation, decide on redevelopment by equipping an opening in the load-bearing wall. Such a need may arise whether you decide to increase the size of the bathroom, combine the kitchen with the living room or turn the apartment into a studio. For residents of panel high-rise buildings, opening openings in load-bearing walls is not only a problem in terms of attractive design. Redevelopment will require a competent technical approach, coordination with utilities, obtaining permits and following hole punching technology. In this article, we will look at how to make and legalize an opening in a load-bearing wall.

A load-bearing wall is a wall that supports the floors. The design of a panel house assumes the presence of such blocks as vertical support for the slabs. Such dismantling without installing supporting mechanisms, the slabs on top will crack, as a result of which cracks will go along the floor and walls of the apartment above you. If the problem is not eliminated in time, the building may collapse.

As you can see, the main walls are an extremely important element in the structure of the whole house. You can determine their location of these thanks to the housing plan, which is indicated in the data sheet. You can familiarize yourself with the scheme at the Bureau of Technical Inventory or at the Housing Office. On the apartment diagram, the main partitions will be highlighted with thick lines.

If you did not get access to the necessary documents, you can try to identify such a wall yourself. Pay attention to the thickness - as a rule, bearing plates are wider. Almost all load-bearing blocks are located at the junction of apartments and at the junction of an apartment and a flight of stairs.

If you are not sure whether this wall is solid or ordinary, remember: expanding the opening in the load-bearing wall in any case will require a special permit, and the specialists from the Housing Inspectorate who will issue it will provide an explanation on this issue.

Is an opening allowed?

You can make an opening in many cases. Often, apartment owners hear a refusal. There are several reasons for the decision:

Outdated load-bearing structures of the entire building. The fact is that every house has its own age, and if yours is over 20 years old, and major repairs have never been made, then making an opening in the load-bearing wall of the house is fraught with negative consequences.
The door in the load-bearing wall on the floor above, below will make it impossible to redevelop your apartment. It is important to pay attention to the location of such holes - they should not be exactly on top of each other.
Another reason for the refusal is the number of storeys of the apartment. There is maximum pressure on the apartments on the first and second floors, therefore, here the probability of obtaining permission to cut a hole is minimal.
The presence of construction defects. In houses commissioned with violations of construction technology, there are discrepancies in interpanel seams, gaps between ceilings and blocks, and other defects. In such cases, you will either receive a categorical refusal, or require additional reinforcement of the wall.
House wall material. In houses with brick walls, it is easier to obtain permission to punch a hole than in panel or monolithic buildings.

Remember: before proceeding with redevelopment, it is necessary to coordinate the opening in the load-bearing wall.

A number of documents and certificates will be required, but it is better to receive them immediately than to experience anxiety after. The Housing Inspectorate, upon revealing an inconsistent redevelopment, has every right to issue you a fine of 3 thousand rubles. The fine is small, but in addition to it, you will still be required to obtain permission. If, according to the results of the check, the cut-out doors in the bearing wall turn out to be in violation, you will be forced to lay a hole, as a result of which all your repair work will be meaningless.

An apartment where there are unauthorized changes cannot be officially sold.

Can it be demolished entirely?

The demolition of the capital partition is definitely not possible and not one specialist will give permission for this. Complete dismantling of supporting structures is fraught with collapse ceiling tiles.

What will be required

To arrange an opening, you need:

design documents. This item refers to the restructuring plan made by the design engineer. To make a rework plan, you must contact the design institute. An even better option would be to contact the design department of the same construction company that built the house. After the engineer has determined whether the housing conversion is possible and in what form, he will draw up the final plan and issue a package of design documents (resolution on bearing capacity walls and ceilings, floor plan, where places for demolition and construction of partitions will be marked, determination of structural elements that affect the method of strengthening the opening);
statement. The application is written in the housing inspection by you personally on a special form;
documents confirming the ownership of the apartment. The types of such documents vary depending on the form of obtaining housing (privatization, inheritance, court decision, and so on). In any case, you must have a copy of the certificate of ownership of housing, certified by the BTI of the city;
technical conclusion on the condition of the building and the possibility of arranging the opening (issued at the design institute);
permission for redevelopment from the owners of the apartment and the owners of neighboring premises (in writing);
an agreement with a contractor who has SRO approval. Since the partial dismantling of the supporting structure refers to work that is not carried out by the tenants themselves, subsequently, to confirm the completion of the redevelopment, you will need to present the SRO approval, which your contractor must have. Without permission, you will not receive a certificate of completion, so it is better not to save on the contractor company.

As a result of obtaining all permits from the housing inspection, the owner is issued a Work Production Log, in which it is necessary to record all stages of the repair. Moreover, it is necessary to record the progress of work honestly and in detail, since deviations and inaccuracies in the journal are the reason for refusing to issue an act on the completion of construction work to the owner.

As for the technology itself, it will depend on the type of opening - rectangular, arched. In any case, punching a hole is not recommended. It should be cut, which is done with an unstressed tool - a diamond wheel. Cutting with such a tool can be carried out stationary and manually, depending on the material and scope of work. As a result of cutting, less dust is generated and the hole does not need additional processing.

We immediately note that the device openings in the main wall the matter is more than responsible, since the structures of the building, which are load-bearing, are affected. In no case should this be done without consulting with specialists and without obtaining permission from the Moscow Housing Inspectorate and approval from the authors of the house!

With such a redevelopment of load-bearing walls, it is important to first go through the approval process, and only after its approval, proceed with the appropriate actions, clearly following the methodology prescribed in the project.

There are 3 types of residential multi-storey buildings in which the possibility of arranging an opening in a load-bearing wall can be considered:

old brick (Khrushchev, or block aerated concrete);
panel;
new monolithic.

The method of transferring or arranging an opening in the main walls for each of the houses is individual.
Such redevelopment of the wall may be necessary in cases of connecting the kitchen and the living room, increasing the window opening or increasing the living space due to the apartment located next door, and so on.
However, carrying out such work without coordination is fraught with adverse consequences:

destruction of the house or individual structures;
a fine for arranging an opening without permission;
repair of the wall and all structures of the building that have suffered as a result of unauthorized unacceptable actions, to be converted to its previous state at its own expense.

So, what kind of opening can be made in a load-bearing wall? Clear General requirements, such as the width of the opening, the amount of indentation from the outer (external) wall, etc., exist only for panel houses due to the fact that they were all built in a standard way.

The answer to the question "is it possible to make a doorway in the load-bearing wall of a brick house?" will depend on results technical survey house, year of construction and other data. The same applies to modern monolithic houses - there are no general clear guidelines, therefore, the maximum width of the openings will vary, based on the individual characteristics of the project of each house.

An important point is the year of construction of the building itself, since any material is subject to wear over time. When arranging a doorway, it is impossible not to take into account the change in loads, therefore, for coordination, it is necessary to strengthen the opening with the corresponding drawings.

Expansion of the opening in the load-bearing wall

The very fact of expanding the opening in the load-bearing wall is a more serious matter than the implementation of redevelopment at the expense of the opening. In this case, strengthening the opening is the primary task of the event, in order to respect your own safety. When enlarging a doorway in a load-bearing wall, it is important to remember a few essential points:

it is necessary to strengthen the support, this will help the installation of metal structures, which will prevent the destruction of the building;
coordination is impossible without a technical opinion and preparation of a package of design documents, since such redevelopment is far from possible in all houses.

If you want to increase the doorway in the load-bearing wall in apartments on the top floors, it is much easier to achieve permission, due to the lower load on the main walls. The situation is more complicated with the coordination of such work on the lower floors, since the load is much greater and the walls are not designed for such events.

Moving a doorway in a load-bearing wall

The transfer of the doorway in the load-bearing wall also needs to be coordinated, since the main wall of the building is affected, in addition, all changes must be made to the BTI plans without fail.

First of all, it is necessary to obtain a technical opinion on the availability of such a possibility.
Such work must be carried out with strict compliance with the requirements of housing legislation, rules fire safety and SNiP. If you move the doorway in the load-bearing wall without agreeing and taking into account all the requirements, then this will entail a lot of unpleasant consequences from a fine to returning the apartment to its original form at your own expense.

Coordination of the opening in the load-bearing wall

Getting permission in the process of coordinating the opening in the bearing wall of a brick house is less problematic than in other houses. The whole point is that brick houses more durable, since the walls in them are less dependent on each other. If you are the owner of an apartment in brick house, for approval you need to contact State Unitary Enterprise Moszhilniiproekt, where, in accordance with applicable law, you will be issued an opinion on the possibility of arranging an opening in the main wall.

Things are different with obtaining permission when agreeing on an opening in the load-bearing wall of a panel house, because in such houses almost every wall has an impressive load. If you arbitrarily build an opening in such a wall, this will weaken it and have a detrimental effect on the structural stability and safety of the entire structure, because all the main walls are interconnected. To coordinate such work and obtain a technical opinion on the possibility of this redevelopment in panel house you need to contact GUP MNIITEP (Moscow Research Institute of Typology).

To match the opening in the load-bearing wall monolithic house you must also contact State Unitary Enterprise Moszhilniiproekt or directly to the authors of the house, which will issue a conclusion on the possibility of legitimizing the opening in the load-bearing wall.

Employees of the Architectural and Design Workshop No. 1 will professionally approach the coordination of the doorway in the load-bearing wall. Quality of work, affordable prices and reasonable terms upon agreement - these are the main principles of the company.

Conclusion:

The device or transfer of an opening in the main wall is more than responsible, since the supporting structures of the building are affected! In total, there are 3 types of houses in which the possibility of such redevelopment can be considered:

old brick ones (for approval, contact the State Unitary Enterprise Moszhilniiproekt);
panel (for approval, contact the State Unitary Enterprise MNIITEP);
new monolithic ones (you can get permission from the State Unitary Enterprise Moszhilniiproekt or from the authors of the house).

The method of transferring or arranging an opening in the main walls for each of the houses is individual and requires coordination in the indicated authorities.

Questions and answers:

Question: Tell me, is the device of the opening or its transfer considered a redevelopment or reconstruction of the building?

Answer: Remodeling and reconstruction are completely different concepts. Reconstruction includes more global changes than redevelopment (for example, changing the number of floors, replacing engineering systems etc.). And redevelopment is a change in the configuration of the room. Accordingly, work on the transfer or arrangement of openings is a redevelopment.

Install door block on a load-bearing wall, if it is not provided for in the project, it is very difficult. The problems are related to obtaining permission. It is impossible to arbitrarily cut openings in load-bearing walls. In addition to the fine issued, the passage will be forced to lay. There will be more problems if the construction of a multi-storey building suffers during amateur performances.

Bearing walls take the load from floor slabs and roofs. Partial dismantling without arranging the supporting structure will cause cracks. Timely action not taken will lead to the collapse of the building.

You can independently determine where the load-bearing walls and partitions are located according to the plan. In the registration certificate for housing they are indicated bold lines. In the absence of documentation, the main walls are determined visually by the increased thickness. Usually they are located at the junction of apartments with each other and with a flight of stairs.

Is it possible to make an opening in a load-bearing wall?

To move or cut through a new doorway on a load-bearing wall, you must submit an application to the head of the housing inspection. Based on the decision made, further work is carried out.

If the issue is not agreed with the authorities, the opening will be forced to wall up and a fine will be issued.

About cutting or moving doorway in a non-load-bearing wall refuse:

If the life of an apartment building over 20 years and never once overhaul. A dilapidated building can collapse.
When there is already a door on the wall one floor above. Refusal to obtain permission to make an opening is justified by the impossibility of their location on top of each other.
When the apartment is on the first and second floor. In multi-storey buildings, the entire load falls on the walls.
If there are obvious building defects. If the walls of the house are already cracked, permission will be categorically denied.
When it comes to panel and monolithic high-rise buildings, it is easier to get approval for the transfer of a doorway to residents of a brick house.
Completely demolish the entire main wall of the building will not be allowed under any conditions. With this option, a collapse of the floor slabs will definitely occur.

In order to obtain a technical opinion on the admissibility, there are instances for issuing permits:

The homeowner submits an application to the head of the housing office. In addition, the plan of the apartment is attached and detailed description future changes to the main wall.
The obtained permission gives the right to apply to the BTI employees, where specialists will develop a project and draw up new documentation. Further coordination of changes to the main wall takes place with the inspector of the gas and fire service.
The last conclusion is made by the controlling organization.

After completing all the documents, you can start redevelopment.

How to make a hole in a load bearing wall?

Making a doorway in a load-bearing wall begins with cleaning the surface. Delete everything Decoration Materials up to brick or concrete. On the cleaned wall, draw the outline of the future opening. On all turns and straight sections, through holes are drilled with a small interval. On the reverse side of the partition, they also draw the outline of the opening. Marks are previously made holes that help create an accurate projection.

Before starting to cut the passage, temporary supports for the ceiling are installed. Supports will reduce the load on the walls and support the floor slabs. Cutting along the markup starts from the bottom up. It is undesirable to use percussion instruments, especially for panel houses.

Used tools and materials

To cut an opening in the main wall, you will need a cutting tool. The easiest option is a grinder with a diamond disc. Professionals use a wire cutter or circular saw with diamond coating. Make holes with a powerful electric drill. Drills are used with diamond tips in the shape of a cone or square.

Additionally, you will need a hammer, mount, sledgehammer, level, marking tool.

A channel, a corner and steel strips are prepared from the materials. Metal will be needed to strengthen the new opening.

Panel house

Cutting an opening in the load-bearing wall of a panel house begins with the arrangement of the lintel. A through cut is made along the horizontal marking line. Its length should be greater than the width of the passage in the wall. The ledge is needed so that the jumper has a reliable support outside the boundaries of the opening. A metal corner is inserted inside the slot on both sides of the wall. So that the two halves of the jumper do not move apart, through holes are drilled through the wall and tightened with long bolts. The finished metal structure is immured with concrete.

Further work is continued after the solution has solidified. Cutting is carried out with a grinder with a diamond disc. First, they go along the entire marking on one side of the wall, then they move to the other side. The cut section is sawn into squares to make it easier to dismantle them. Each segment is carefully knocked out with a sledgehammer. Flaws at the ends of the opening are leveled with a grinder.

Brick house

To make a pass in the carrier brick wall, perform similar actions. The difference is the markup. It is desirable to place the lines at the seams of the masonry. The upper jumper from the corner is inserted into the space between the seams. Wall cutting can be done with diamond-coated drills. First, the mortar is drilled at the seams, and then the masonry is disassembled with the help of a mount.

Gain

The recessed lintel is only a safety support. To strengthen the opening in the bearing wall of bricks, a channel is embedded. The workpiece is taken 60 cm more than the width of the opening. At the ends of the walls for a new lintel, windows 30 cm deep are cut out. If the masonry is thick, then two channels are placed on both sides of the partition. All voids are filled with concrete.

To strengthen the opening in the load-bearing wall of a panel house, a lintel from a channel or an I-beam is cut in a similar way. Installed on both sides of the aisle vertical racks. It turns out an opening framed by a U-shaped structure from a channel. Racks to the jumper are welded by electric welding.

If a project is being developed to strengthen the opening in the load-bearing wall, where an arch cut is provided, a mandatory strapping is built on the sides. Supports are placed regardless of the material of the wall. The upper jumper is made from a bent channel. The metal elements of the arched vault are welded together.

A change in size, location, or a new cut of an opening in the main wall of a building is considered a redevelopment. You cannot start work without obtaining permits.

They decide to reschedule. This method will allow you to rationally use the territory of your apartment. However, often redevelopment also affects load-bearing walls. How to be in such a situation? Can a load bearing wall be demolished? Or, is it possible to make an opening in a load-bearing wall? We will consider the features of load-bearing walls, as well as cases when an opening can be made in them.

Is it possible to demolish a load-bearing wall?

The stability of the house is achieved due to the presence of load-bearing walls, which are made of heavy-duty material. If one of the walls is not removed, then the strength of the entire structure will be at risk. Due to the demolition of the wall, engineering calculations will be violated. Conclusion: it is impossible to completely remove the load-bearing wall, this is fraught with big troubles. It is quite another thing to make an opening in a load-bearing wall. This is allowed under certain circumstances. But for this, it will be necessary to first coordinate the issue of redevelopment with the relevant authorities, carefully make calculations.

Features of load-bearing walls

The thing is that the load-bearing wall is subjected to heavy loads. Therefore, how strong it will be depends on the life of the whole house.

Not in all cases it is possible to obtain permission to make an opening in a load-bearing wall! This is due to the fact that the design of houses in all cases can be different. It is especially problematic to obtain such permission if you live on the first or second floor. In these places, the walls are under special stress.

Some take the wrong position on this issue. They make a hole in the wall, and then, in fact, apply to the authorities that they supposedly did not know or forgot to apply. But such people should be aware of the following. According to the latest rulings, unauthorized opening in a load-bearing wall can result in heavy fines, and in the worst case, deprivation of the right to live in this apartment. But this is the maximum that you can run into. At least in this case, they will force the wall to be restored. Even if you managed to hide the fact of redevelopment, sooner or later they will find out about it.

If you live in a brick house, then getting permission to make an opening in a load-bearing wall is easier.

So, in order to get the coveted permission, you will need to collect the following documentation:

Floor plan of the apartment.
Remodeling sketch.
Apartment ownership certificate.
Filling out an application in a strictly prescribed form.

If you still get permission, you can get to work.

Opening manufacturing methods and necessary tools

As for the manufacture of the opening, many will think of a jackhammer. But such a view is erroneous. Although this method has been tested by time, it is not effective in all cases. Moreover, the use of a jackhammer to make an opening in a load-bearing wall has a number of disadvantages:

A large number of microcracks appear.
The integrity of the wall is violated, especially if it is made of brick.
The made opening must be further processed, which will entail additional costs.
In the process of work, a lot of noise and dust arises (secretly, you can’t do it in any way).
Many walls have metal reinforcement, which will make it difficult to work.

Today there are a number modern technologies, which allow you to quickly and with minimal labor to make an opening in the load-bearing wall.

Use of rope equipment. In this case, special bushings and a rope are used, on which artificial diamonds are installed. This method is effective for the reason that when it is used, dust, vibration, and noise are not generated.
Diamond drilling. Here, special diamond-coated drills are used. They can drill even holes around the entire contour of the opening. Accordingly, this method will save your costs for the subsequent processing of the walls. The use of diamond drilling allows you to maintain the integrity of the wall, both brick and reinforced concrete.
Saws with a diamond dusting. Most best way if you want to find the best option making an opening in a load-bearing wall. There are two cutting methods: stationary and manual. The choice will depend on the size of the opening and the required quality.

Break not build!

To begin with, it is necessary to carry out a number of preparatory processes. A jumper is pre-made, which will take on the entire main load from the wall array located above. This element is very important: the safety of the entire structure and yours, respectively, will directly depend on its strength. In this case, the following must be taken into account:

wall thickness,
the ratio of the size of the wall and the opening,
technical condition of the wall,
the material the walls are made of
distance to adjacent walls and ceiling,
the location of the floor slabs,
the number of floors above your apartment.

In the event that the opening is made in a large wall, the floor slabs must first be supported. For example, props can be made from pipes or logs.

As for the material for the jumper, then ideal option will be steel. It is the most reliable and strong material for this purpose. As a rule, you can purchase a channel that is bolted on both sides or an I-beam. If you opted for installing a channel, then M20 bolts are suitable for connecting it. The distance between them should be half a meter. The length of the jumper must be sufficient so that it does not bend under heavy loads.

Now let's start making the opening. To begin with, the plaster is removed from the wall. To do this, you can first draw the outlines of the opening with chalk. Then an opening is cut for mounting the jumper. These strobes are made from two sides. Next, you need to drill holes for fastening the jumpers with bolts. These niches must be well cleaned so that a channel can be easily installed in them. Dust should be removed by wetting the wall with water.

After making the strobe, prepare cement mortar from cement brand M500. The solution should be dense and thick. It should be laid in the manufactured strobe, and then, install the channel and tighten it with bolts. Now the whole structure should solidify well.

In the process of work, voids may form. How to eliminate them? To do this, you can take small pieces of a block / brick, which are installed on the same mortar.

Bolted connections must necessarily have washers!

After that, you can proceed directly to punching the opening. In this case, you can use any of the above methods. It should be noted that the punching of the opening must be done gradually. Think about how you will dispose of the resulting garbage and what size waste should be.

After making the opening, the slopes should be finished. In some cases, it is possible to make a reinforcement of the structure, especially if the opening has a large thickness. To do this, a metal corner is mounted in the corners, which can be welded to the jumper. These corners are also welded together with metal plates. It remains only to plaster the slopes and proceed to the finishing.

There is another method for making a lintel from a reinforced concrete beam. In terms of its strength, it is in no way inferior to the above technology. To install it, you must first make a through opening for the entire length of the reinforced concrete beam. She, in turn, is laid on cement mortar. It is possible to break through the opening only when the cement with the beam has seized. The subsequent process is the same as above.

If you want to use non-standard interior design solutions for redevelopment, you can make an arched opening in the load-bearing wall. But in this case, you will need to make a special design. To make such an opening, you will need to first prepare a profile or other material that will exactly repeat the outlines of the opening. Fastening is carried out according to the same principle. The only difference is that the structure as a beam should be bolted not only to each other, but also to the wall.