The choice of flooring for the house. Floor slabs or monolith? What to choose? Here are some important questions that we will consider

The modern construction industry is increasingly using new building materials made by saturating the original binders with various light components, such as air, slag or wood waste. It's about blocks. Their use can significantly speed up the process of erecting the vertical parts of a residential and non-residential building, increase the heat and sound insulation properties of the house.

Usually, to separate attic or attic rooms, various kinds of ceilings are installed on the main frame. We will talk about the features of choosing and installing floors for a house built from foam blocks today.

One of the characteristic properties of block materials, especially those in which various gas mixtures and air are used as a filler, is low strength characteristics. They must be taken into account when choosing materials for the installation of floor elements in order to avoid violating the geometry of the entire house and its strength. In this regard, in the manufacture of the second and third floors, as well as the attic, wooden beams enjoy the greatest attention.

In addition to reducing the load on the walls of the house from foam blocks, such elements allow them to be installed by several workers without the use of specialized lifting devices or construction equipment.

Also, splicing along the length or the manufacture of glued beams makes it possible to obtain beams reaching a length of about ten meters or more, which, subject to certain wall parameters, makes it possible to build buildings without internal partitions. Instead of rectangular bars, boards with a thickness of 50 millimeters or more, rallied together along the planes, may well be used.

A feature of the use of wooden beam ceilings is the need for their additional treatment with various fire and biological protective compounds that prevent the rapid ignition of the wooden parts of the house, as well as their destruction when exposed to various microorganisms. In order to avoid a decrease in the heat-shielding functions of the walls, floor beams must be laid directly into the upper crown of the walls in the case of attics, or into masonry and carefully insulate their ends with some kind of artificial resin.

In addition, in order to evenly distribute the load from the ceiling, we recommend making a small reinforced concrete belt.

Ceilings from steel profiles

Sometimes, instead of wooden beams, steel profiled beams are used in the form of a channel or an I-beam. Due to the greater mass, the use of these elements in the construction of floors imposes higher requirements on the organization of the reinforced belt, which is made around the entire perimeter of load-bearing walls and partitions. For its manufacture, formwork from panels or boards is installed in the upper part of the vertical structures.

A steel frame is laid in it, connected or welded from steel ribbed bars. In the future, the entire space inside the formwork is poured with concrete mixture and aged for several weeks to acquire maximum strength.

Monolithic slab

Another option for the base for the floor of the attic or the upper floor of the house from foam blocks is to manufacture a monolithic slab. The process of obtaining it is associated with a number of features. Firstly, this is the installation of durable intermediate partitions, as well as a significant increase in the thickness of the bearing walls. Secondly, the process of pouring a monolith is associated with the use of a large number of removable supports. Thirdly, such an overlap requires a significant consumption of steel reinforcement and concrete mixture, which, on the one hand, significantly increases its cost, and on the other hand, its mass. The use of a monolith is not recommended without serious preliminary calculations of the strength of the walls, depending on the mass of the floor itself, as well as the weight of the building elements located above (upper floors, attic and roof). Often, in order to maximize the lightness of solid floors, a ribbed design of the slab is used, which gives it a minimum mass while maintaining high strength.

Reinforced concrete floors

The last way to manufacture the floors of a foam block house is the floors of reinforced concrete slabs. These designs have both standard sizes and are made to order. The production time is quite long, therefore, when planning the installation of non-standard plates, their order must be made in advance, at the beginning of construction work. In order to reduce the load on the structure of the whole house, it is better to purchase reinforced concrete products equipped with internal cavities.

During the delivery, unloading and installation in place of such ceilings, one cannot do without the use of specialized construction equipment. Long-length trucks may also be required for the transportation of long-length slabs, the rental of which will also leave a significant imprint on the total cost of work. In addition to using a crane, at least three workers will be required to operate the lift, guide and stack.

The development of the production of foam blocks has led to the emergence of enterprises specializing in the manufacture of floor slabs. Unfortunately, there are much fewer such firms in our country than those involved in the production of reinforced concrete products. Therefore, not many people manage to purchase them and deliver them to the construction site.

Thus, when choosing a floor material, many different parameters should be considered, paying attention not only to the strength characteristics of each specific material, but also to its cost, as well as the need to use expensive equipment and specialized workers.

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Overlappings by appointment can be interfloor and attic. They can be made of wood or reinforced concrete (monolithic and prefabricated). The type of flooring must be selected in accordance with the type of house, as well as with the purpose of the floor itself.

The design of the floors must take into account the design permanent and temporary loads. The design constant load includes the own weight of the structure, including coating materials and insulation.

Temporary (variable) loads are the weight of furniture, boiler, plumbing and other equipment, as well as people in the room. If we are talking about capital stone houses, then in them interfloor ceilings usually suit their reinforced concrete.

Wooden structures are used, as a rule, in the arrangement of attic floors and interfloor floors of wooden houses. In the course of calculating the temporary loads, it must be taken into account that the load of the basement and interfloor floors is on average twice as high as the load of the attic.

Reinforced concrete ceilings

This type of flooring is used only in those houses that are built of brick, stone or concrete. An important advantage of reinforced concrete floors is their very high bearing capacity. These ceilings need additional insulation, since they have a low level of thermal insulation and a high level of sound transmission. According to the manufacturing method, there are monolithic and prefabricated floors.

Prefabricated reinforced concrete slabs produced in the factory have a design bearing capacity, their range is provided for by the project. Thanks to the use of such ceilings, it is possible to significantly reduce construction time and save costs.

Concrete concrete factories produce a wide range of plates:

  • solid,
  • empty,
  • made of heavy and light concrete.

Hollow slabs are the most popular today. This is facilitated by their low cost and the best performance in terms of heat preservation and sound insulation. In addition, hollow products have a lower weight, i.e. there will be less load on the foundation and load-bearing walls.

For the installation of these prefabricated floors, it is required to use specialized lifting equipment. The slabs are laid on a bed made of sand-cement mortar. The bed is laid in those places where the ceilings will rest on the load-bearing walls.

Slab leveling

The alignment of the slabs during the installation of interfloor ceilings is carried out along the lower surface, while displaying the horizontal along the level, level or spirit level. Supports on load-bearing walls should be at least 12 cm - 14 cm. If the slabs have prestressed reinforcement, then they should be supported only on the ends (support by the middle of the surface and the side edges of the slab is not allowed).

If the construction site is not equipped with lifting equipment, i.e. installation of prefabricated slabs is impossible, then monolithic reinforced concrete floors are created.

Overlappings of monolithic type

Overlappings of a monolithic type are slab, beam, ribbed and with liners. These floors are made directly on site, casting into a specialized formwork.

Since monolithic ceilings are a very important structure, they must be made strictly according to the project and by qualified craftsmen.

Most often, a monolithic slab is used. The support areas of this structure on load-bearing walls should be at least 10 cm and at the same time exceed the thickness of the slab itself. The reinforcing cage is placed from the bottom of the slab (in the stretching section of the structure).

The ends of the reinforcement should be located at a distance of 3 cm - 5 cm from the formwork. When making monolithic consoles, the reinforcing layer is placed from the top of the structure.

For a monolithic floor, the maximum span should not be more than 3 m. If the distance is greater, then a monolithic beam floor is used. In this design, reinforced concrete beams are mounted, the reinforcement outlets of these beams are connected to the reinforcement of a monolithic slab.

The support of beams on load-bearing walls should be at least 20 cm - 25 cm. The cross section and installation step of the beams are indicated by the project. Reinforced monolithic belts are created along the load-bearing walls, beams are attached to them with anchors.

Technology for the implementation of monolithic floors

The design of monolithic ceilings with liners is rarely used today. The technology for making such ceilings provides for the placement of ceramic liners of various shapes between the bearing beams.

During the production of a monolithic ribbed slab, the liners serve as formwork for the slab and the ribs. The disadvantages of this design is the complexity of implementation, as well as a high level of sound transmission.

Wooden floors

The advantage of wooden floors is the simplicity of their assembly, which does not require the use of specialized mechanization. In addition, such floors have excellent thermal insulation properties. The bearing capacity of wooden floors is provided by wooden beams.

The cross section of the beams is calculated taking into account the total magnitude of the loads, as well as the length of the span between the supporting walls. Beams are made of glued or massive timber. On small spans, you can install paired, pre-bonded beams from boards of at least 50 mm.

The ends of the beams must rest on the load-bearing external walls. If we are talking about large-span structures, then the middle part of the beams is additionally supported by load-bearing internal walls. The beams are laid to the center from the edges, setting the step according to the calculations for the project.

You can only change the step size down from the value planned by the project. The position of the extreme beams is necessarily verified by means of a level or building level. Intermediate beams can be aligned along the rail or along the thread. All wood structural elements are treated with antiseptics and fire retardants.

Installation of floors in a stone house

If wooden floors are arranged along stone walls, then the beams are tarred or wrapped with roofing material before being embedded in the wall. In the process of supporting the beams on the load-bearing external walls, the gap between the end of the beam and the wall is laid with mineral wool insulation.

At the same time, it is necessary to leave a ventilation gap - this will prevent the formation of condensate on the wood. The beams are attached to the walls on anchors, which are embedded in brickwork or a monolithic reinforced concrete belt.

Installation of ceilings in a log house

If the ceiling is arranged in a log house, then the beams are cut tightly between the crowns (in this case, additional fasteners are not used). If the ceiling is being erected in a frame building, then the beams are supported on the strapping, fixed with brackets, studs or nails.

In order to save heat and provide sound insulation, the space between the beams is filled with insulation. They do it this way: sheets of glassine are lined along a continuous boardwalk, then heat-insulating material is placed on the glassine or poured.

What should be the cross section of the beams can be found from specially designed tables.

During the arrangement of wooden floors, special attention should be paid to the passage of chimney, chimney and boiler pipes through the ceiling. The distance between the pipe and the wooden structural element must be at least 25 cm. A heat-insulating gasket must be arranged around the pipe itself. To do this, use sheet basaltin or asbestos.

They must be reliable, resistant to fire, with good soundproofing and heat-insulating properties. The strength and durability of the structure itself, as well as the comfort and safety of residents, depend on how well the choice was made and how high-quality the installation of the floor is. How do some types of these structures differ from others, which interfloor floors are better for a cottage, how to calculate the load, how to properly install - this week's topic.

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There are always a lot of questions and doubts that complicate the choice of interfloor overlap. You can set and resolve any of them here together with advanced users and FORUMHOUSE experts.

If you carefully look at the estimate for the construction of a typical private house (cottage), then such structural elements account for about 15-20% of all costs. It is by increasing the number of storeys of any building that it is possible to solve the problem of more rational "development" of even a relatively small plot of land. What types of overlaps are there, how they are characterized, when it is advisable to use one or another of their options, what will come out to do on their own is the topic of this article.

Main characteristics

Any private house, even in 1 tier, is conditionally divided into several levels. When arranging interfloor ceilings with your own hands, it should be taken into account that, depending on the location of these structural elements, different requirements are imposed on them. First of all, according to the main characteristics. These include:

1. bearing load. Sometimes they talk about the strength of the interfloor ceiling, that is, its ability to withstand not only its own mass, but also the weight of everything that is located above - furniture, household appliances, and so on;

2. resistance to deformation. First of all, break. This characteristic is interconnected with the previous one and determines the linear parameters of the samples (slabs, beams) that separate the floors of the cottage;

3. sound transmission. The lower this indicator, the lower the cost of arranging sound insulation;

4. thermal conductivity. This is especially true for the lower and last floors of a private house. From this characteristic of the material directly depends on how heat will be stored in its rooms.

5. fire resistance. Fire safety requirements for residential buildings are much more stringent than for utility buildings (storage, utility and others).

Classification

1. According to the place of installation.

  • Attic.

The main criterion for assessing quality is minimal heat loss. Therefore, such interfloor ceilings need additional insulation. If the cottage has an attic room, this stage of finishing work is given increased attention. It is also taken into account that all vapors rise to the ceiling. Therefore, the correct arrangement of the vapor barrier of the uppermost floor of a private house is of great importance.

  • Basement (basement).

Much here depends on how the technological floor is equipped, and whether it exists at all. There are quite a lot of options for the bases on which cottages are being built, if we take into account the combined ones (for example, piles + shallow tape). If there is a basement, the main requirements for this type of interfloor overlap are the same as for the previous one. Another condition is added - reliable protection against dampness, especially if there is no heating circuit on the technical tier. In this case, there is a specificity in the installation of the vapor barrier layer - it is laid on top of the insulation material, since vapor diffusion will occur from the warm zone (room) to the cold zone (basement).

  • Interfloor.

They have different requirements. Since the microclimate is, by definition, maintained at the same level in all rooms of the cottage, such a characteristic as the degree of protection from noise comes to the fore. For interfloor floors located above (and below) rooms with excessive humidity (kitchen, bathroom, laundry, etc.), reliable waterproofing is also important.

2. By appointment:

  • Carriers.
  • Enclosing.

3. By execution.

3.1. Beamless options:

  • Monolithic.

According to the manufacturing technology and the final result, such interfloor ceilings are divided into ribbed, "with liners" and a number of other varieties. The common thing is that in the process of work it will not be necessary to use complex equipment, especially, to deal with the delivery of samples to the construction site. A horizontally oriented formwork is preliminarily prepared, into which the solution is poured. After hardening of the artificial stone between the floors, a monolithic dividing structure is obtained.

Perhaps the only drawback is the preparation time. We'll have to wait until the solution is fully strengthened. But there is also a big plus - this technology can be applied to individual segments. For example, if it is necessary to update the interfloor ceiling in a wooden house, without large-scale dismantling of any part of it.

  • Prefabricated.

They are the most reliable, as they are mounted from reinforced concrete (hollow slabs). But this technology in relation to a private house has a number of limitations. Firstly, the increase in the cost of work due to the need to use lifting equipment. Secondly, the complexity of transportation and laying of plates. Their maximum length is 9 m, and it may not coincide with the design parameters of the cottage. Thirdly, the walls must support the weight of the reinforced concrete. Consequently, such interfloor ceilings in a house made of aerated concrete, for example, cannot be applied. As an option - for brick buildings.

  • Prefabricated monolithic.

It is the best engineering solution for arranging interfloor ceilings between floors with your own hands, although it is still rarely used in the construction of private houses. Basically, due to the lack of awareness of developers about the benefits of this option. The main thing is that you can do everything yourself, and in the shortest possible time.

The name suggests that this is a combined technology, which includes elements of prefabricated and monolithic structures. The basis is beams on which hollow blocks are laid. In fact, they play the role of forms, and the solution is subsequently poured into them. One of the significant advantages is that it can be anything. For example, an interfloor prefabricated monolithic ceiling made of aerated concrete.

3.2. Beam:

The main difference is in the material of the blanks used.

  • Reinforced concrete beams.

In the process of building cottages, they are practically not used. Large labor costs, installation complexity, increased load on the foundation - these are just some of the problems that will have to be faced. For example, such interfloor ceilings in a house made of foam blocks are not an option due to the fragility of the wall material. Separation of floors in individual buildings can be done in other, more acceptable ways.

  • Metal blanks.

In the construction of private houses, interfloor ceilings based on I-beams or channels are used quite actively. But, as a rule, only to separate the first and technological floors. Pluses - high strength and small sections compared to wooden counterparts (with the same design load); the ability to do the installation on their own. Cons - susceptibility to corrosion and high thermal conductivity of metals. Therefore, when laying them, some protective technologies are used. For example, wrapping the end parts of the blanks with felt.

  • On wooden beams.

There are many advantages - the cost of production makes it affordable, low thermal conductivity, ductility of the material to be processed with the simplest tool. In most cases, the best option for separating floors in a small cottage.

There are other varieties. For example, coffered, hipped, arched. In the private sector, they are practically not used. Unless in cottages, the roofs of which have a complex configuration. To make any of them, you need not only accurate engineering calculations, but also professional skills. Therefore, independent execution is questionable. As a rule, such structural parts with a small area are mounted on their own only in ancillary buildings located on the backyard territory.

The article gives a general overview of the options for how to divide the floors of a private house. You need to understand that it is necessary to determine, first of all, the sections of the samples used, therefore, the services of a specialist will be needed. But the rest of the work on the installation of the interfloor ceiling in most cases will be done on its own.

If you want to build yourself a small cottage or a two-story house, then you will have to face the problem of choosing an interfloor overlap. After reading this article, you will learn about what they are, as well as the advantages, disadvantages and features of each type of overlap.

Interfloor ceilings are an extremely important part of the house, they must not only withstand significant loads, but also be distinguished by sufficient sound insulation. Agree, it’s unpleasant when every step that is made on the second floor is heard on the first floor. Also, interfloor ceilings add strength to the entire structure and take on some of the deformation loads.

All floors are divided into interfloor, attic, basement and basement.

What requirements must be met by floors between floors?

Primary requirements:

  • High structural strength, that is, the possession of a bearing capacity. This parameter must be calculated at design time.
  • Significant floor stiffness. Deflections and shifts, even minimal ones, can lead to the destruction of the entire house. The allowable deflection for interfloor floors should not exceed 1 to 250, and for attic floors - 1/200.
  • Coverage should be maximum light, thin. It should not create excessive load on the walls.
  • Interfloor overlap should become a barrier to fire, that is, have high fire resistance. This characteristic is regulated by fire safety standards.
  • High thermal insulation properties. Overlappings do not always separate living rooms, but they can enclose rooms where there is a significant temperature difference.
  • Good sound insulation. This parameter is extremely important, and we must not forget that not only the walls of the building, but also the interfloor floors need this parameter.

All requirements are mandatory, and are suitable for any type of floor. Sometimes additional requirements are imposed on interfloor ceilings, for example, water tightness, or gas tightness, or a special appearance.

Types of interfloor floors

According to the design of the floor are divided into:

  • beam- they consist of load-bearing beams and filler;
  • beamless- are made of homogeneous elements, for example, panels or plates;

The latter may be:

  • from wooden beams;
  • with metal beams;
  • with reinforced concrete beams.

In this type of flooring, the basis is beams placed equidistant from each other. After the beams are installed, filling elements are laid between them, which play the role of a fence.

Interfloor ceilings made of wooden beams

This type of flooring is most common in private housing construction, in particular, in the construction of wooden, frame and even brick buildings.

Application:

  • wooden beams are used as interfloor ceilings if the span is not more than five meters;
  • as an attic floor, if the attic is not residential and the span is less than six meters.

Most beams are made from pine or larch. On their upper part, flooring is made, which can be used as a subfloor.

Advantages of floors from wooden beams:

  • quick installation - for the construction of such a structure, special devices are not needed;
  • light weight - such an overlap will not create a significant load on the walls of the house;
  • environmental friendliness - the tree does not carry any harmful substances.

Flaws:

  • weak resistance to fire - even with good processing, the tree will still catch fire;
  • there is a chance of beams rotting or being damaged by bark beetle;
  • such an overlap will not be able to withstand significant loads.

Beam-type ceilings consist of beams, floor, run-up and insulation.

Interfloor ceilings made on metal beams

Compared to the previous type, they are more reliable, durable and much thinner than wooden ones. True, overlappings of this type are not built so often. Lightweight concrete inserts, wooden rolls or shields, or reinforced concrete slabs are used as fillers.

An I-beam, a rolled profile, a corner or a channel are used as the bearing element of this overlap.

Advantages of floors on metal beams:

  • it is possible to cover a large span (from 6 meters);
  • metal beams do not burn, do not rot, they are not afraid of any beetle;
  • they are very durable.

Negative sides:

  • metal rusts from moisture;
  • metal beams have low rates of sound and heat insulation;
  • the huge weight of such an overlap - one square meter can weigh more than 400 kilograms.

To make the metal beams "ring" not so much, their ends can be wrapped with felt.

Ceilings between floors of reinforced concrete beams

Such ceilings are erected if the span is from 3 to 8 meters. You can’t lift them with your hands, so be sure to use a crane. The weight of one beam can reach 400 kilograms.

Advantages of this type of flooring:

  • it is possible to cover large distances compared to wooden ones;
  • they have higher parameters of heat and noise insulation than ceilings on metal beams.

Flaws:

  • huge weight and the inability to install manually, only with the use of special equipment.

Beamless floors

Such floors are devoid of the so-called frame and are created using homogeneous elements. The latter are stacked close to each other. Plates or panels are used as elements. They are a monolithic slab, which is both a load-bearing and enclosing structure.

Types of beamless floors:

  • prefabricated;
  • monolithic;
  • prefabricated monolithic.

This type of flooring has gained the greatest popularity in the construction of brick structures. For the construction of this type of floor, two types of panels are used:

  • solid- are made of lightweight concrete;
  • multi-hollow- holes are made in them, which act as "stiffening ribs".

Positive qualities of prefabricated floors:

  • they are more durable than wooden ones, and are also not subject to rotting, corrosion, and are not afraid of various bacteria;
  • excellent strength - they are able to withstand significant loads, up to 200 kg / m2.

Negative sides:

  • since they have a significant weight, during their installation one cannot do without special equipment;
  • plates are usually made only with standard sizes, so they may not fit.

Building this type of flooring is quite expensive, but you will pay for quality and durability.

Unlike the previous type, they can be of any shape and size. A monolithic floor slab is a solid slab with a thickness of 8 to 12 centimeters, made of M200 concrete. The weight of one square meter of this design can reach 500 kilograms.

Advantages of monolithic floors:

  • high surface quality;
  • no need to carry out additional loading and unloading operations;
  • no need to close the seams;
  • the opportunity to order such an overlap, which you can only fantasize.

Flaws:

  • mandatory need to install wooden formwork;
  • very heavy, so the load on the walls increases;
  • quite high price.

Prefabricated monolithic ceilings between floors

This type refers to modern developments. In it, the inter-beam space is filled with hollow blocks, and then the entire structure is poured with concrete.

The positive aspects of prefabricated monolithic floors include:

  • less weight than reinforced concrete, so you can do without special equipment;
  • good thermal insulation characteristics;
  • the ability to create overlaps of complex shape.

Negative points:

  • inexpediency of use in low-rise construction, since the process of erecting such a structure is quite laborious.

The choice of flooring largely depends on the size of the spans and the material from which the house is built. For light wooden and frame structures, wooden beam floors are suitable, and for heavy brick structures it is better to use metal beam or reinforced concrete floors. In any case, you should not save on this, and during the design it is better to consult with a specialist about the choice of overlap.

Video: Soundproofing floors on the example of a wooden house

Marking various types of foundation for a house

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