lstk technology. About technology The use of lstk in construction

Light steel thin-walled structures (LSTC)- modern technology for the rapid construction of buildings and structures, which are made of steel building elements up to 3 ... 4 mm thick. Abroad, in Europe, this technology is called Light Gauge Steel Framing (LGSF).

What is LSTC? Where LSTC structures are used in construction

The LSTK technology is an alternative to timber frame construction and was developed to reduce the cost and speed up the process of building low-rise middle-class houses. Building elements from LSTK are used as self-supporting structures of low-rise buildings ( photo 1) or in combination with traditional technologies construction of buildings from standard building materials: wood, metal, brick, reinforced concrete ( photo 2).

Photo 1_Frame low-rise buildings from LSTK

Photo 2. LSTC building elements in combination with traditional technologies for building buildings from standard building materials

Such countries as Canada, the USA, countries Western Europe, China. In Russia and Ukraine, as well as in other CIS countries, design and construction was more practiced metal structures(MK) and light metal structures (LMK), which have significant differences from the LSTK technology.

Signs of LSTC

Consider the main features of light steel thin-walled structures (LSTC):

The thickness of the steel from which the building elements are made does not exceed 3 ... 4 mm (0.7 ... 4 mm); steel yield strength 250 ... 350 MPa and more; relative elongation not less than 18%.
For the manufacture of building elements, cold-rolled zinc-coated steel sheet is used, the mass of which is at least 275 g/m 2 .
The main elements of LSTK are cold-formed profiles of open and closed sections.
Thin-walled profiles with perforated walls (thermal profiles) are used as building envelopes - walls and ceilings - they improve the thermal performance of building envelopes.
Basically, LSTK elements are connected with high-quality self-tapping screws from:

of stainless steel;
carbon steel with zinc or cadmium coating;
carbon steel with cadmium coating.

The design calculations from LSTK take into account the joint work of all building elements, including the work of internal, external skins and other non-metallic elements.
The design of buildings from LSTC is carried out using computer two-dimensional and three-dimensional modeling (using the effects of spatial work of structures).
All building elements according to the LSTC technology are manufactured at specialized enterprises, and at construction sites they are only assembled into a single structure.
At the enterprise, strictly according to the working drawings, all elements of the frame and its skin are made, special holes are marked or drilled in the elements strictly in the right place to connect the elements into a single frame.

The main building elements of LSTK structures include profiled or perforated galvanized steel thin-walled profiles, from which racks, lintels, guides, girders, etc. are made, photo 3.

The basis of the building, built according to the LSTK technology, is a bearing rigid and durable frame, which is assembled from light steel thin-walled structures. Due to the low weight of a building made of LSTK, a shallow foundation is often used (on average, the height of the foundation is 0.6 m, the width is 0.2 ... 0.6 m).

Photo 3. Elements of the LSTK frame

Bent LSTK profiles are represented by 4 main types cross section , photo 4:

U-shaped profile (channel);
C-shaped profile;
z-profile;
corner.

Profile height – 100…350 mm.

Photo 4. Varieties of LSTK profiles: 1 - U-shaped (guide) thermal profile; 2 - C-shaped (rack-mount) thermal profile; 3 - hat thermal profile; 4 - U-shaped (guide) profile; 5 - C-shaped (rack-mount) profile; 6 - galvanized corner; 7 - Z-profile

Connections between building elements of LSTK are performed using:

bolts (diameter 5…16 mm);
self-tapping screws;
special screws (self-drilling and self-tapping screws);
rivets;
powder mounting dowels;
pneumatic mounting dowels;
press connections;
plates;
hairpins.

The frame of the building from LSTK is sheathed with standard modules, photo 5:

roof panels, photo 5a;
Wall panels, photo 5b;
floor panels, photo 5c.

To improve the heat and sound insulation properties of the panels, a heater is installed inside them (most often it is mineral wool).

Photo 5. Standard building modules from LSTC: a) roof panels; b) wall panels; c) floor panels

For the construction of low-rise buildings using the LSTK technology, the outer walls can be made in two versions:

load-bearing walls from a frame including thermal profiles;
self-supporting walls made of prefabricated sheets or panels

What is LSTK thermal panels?

Thermopanels LSTK produced according to custom order at specialized enterprises and are designed to fill the space between the building frame and the formation of external walls. LSTK thermal panels are used in the construction of residential and office buildings, hotels, hotels, cafes, shopping centers etc. The thickness of the panels is 15…25 cm (the reduced heat transfer resistance of the wall is 3.2…5.1 m 2 °C/W).

Thermal panels are mainly composed of the following components, photo 6:

exterior finish (may be brick, siding, wooden lining etc.);
gypsum boards (2 layers);
mineral non-combustible basalt insulation or fiberglass insulation in the form of plates;
vapor barrier film;
the supporting frame of the panel, consisting of jumpers, guides and rack-mount thermal profiles;
internal lining - made mainly of drywall.

The peculiarity of thermal profiles lies in their design. Galvanized steel elements of the thermal profile are perforated (notched) in the form of long holes arranged in a checkerboard pattern. With such an arrangement of the perforation, a decrease in the thermal conductivity of the steel profile is achieved (the effect of increasing the length of the heat-conducting section through which heat losses occur).

Photo 6. circuit diagram building devices based on thermal profiles. Thermal panel device: 1 - external finish; 2 - gypsum boards (2 layers); 3- mineral insulation; 4 - vapor barrier film; 5 - guide thermal profiles; 6 - rack thermal profiles; 7 - thermal profile jumper

LSTK thermal panels are manufactured at the enterprise and are installed in ready-made form directly at the construction site, photo 7.

Photo 7. Installation of LSTK thermal panels

The sequence of organization of construction according to the LSTK technology

Determination of the design and size of the house.
Performance of calculation and design work, on the basis of which project documentation is compiled, and is determined right amount construction elements of LSTC.
Produced: manufacturing of building elements, drilling of technological holes and marking of all elements, according to assembly drawings. The production of all elements is carried out on average in 2 ... 5 days (depending on the complexity of the design).
Delivery of all items to construction site disassembled or assembled main parts (panels). The set of parts that should be delivered to the construction site includes:

profile of the required size, according to the drawings;
connecting fasteners of nodes (fasteners and parts must be galvanized);
assembly drawings.

What are the advantages of LSTK technology?

High construction speed. For 4 ... 5 months, you can completely build a medium-sized house.
Lightweight construction. A building made of LSTK structures does not exert much pressure on the foundation or underlying structures. This property is especially valuable when making add-ons from LSTK of existing buildings.
All-weather construction. Possibility of construction using LSTK technology in any weather all year round. In most cases, there are no “wet processes” during construction.
Ease of construction. For the construction of a residential building, it is enough to involve a team of installers consisting of 3 ... 4 people. The weight of one LSTC part does not exceed 100 kg. Frame of an ordinary trading pavilion with total area 200 m 2 can be assembled completely in 3 days by a team of 4 people. There is no need to use heavy lifting equipment.
Seismic resistance. In Japan, construction using LSTK technology has become widespread.
Minimum heat loss of buildings built using the LSTK technology.
Not difficult transportation of construction elements of LSTK.
High quality. All elements are manufactured at a factory or a specialized enterprise.
Relatively low construction cost. The cost of 1 m 2 of "turnkey" housing is approximately $400...500.
Structural advantages. The LSTC structure is relatively easy to dismantle and install again in the right place, with minimum expenses(you can build prefabricated structures). It is possible to install on buildings from LSTK different finishes facade: brick, siding, lining, profiled sheet, etc., rice, 8b.

Safe build. Assembly (disassembly) of structures is carried out without the use of welding.
biostable material. Mold and fungus do not take root on galvanized steel.

Photo 8. Advantages of using LSTK technology for building construction

What are the disadvantages of LSTK technology?

The durability of the load-bearing structures of the LSTK and the building (structure) as a whole strongly depends on the quality of the production of steel profiles and the installation of the LSTK structures. In countries former USSR This technology has been used relatively recently, so the quality of materials and work does not always meet the requirements of this technology. On average, the durability of load-bearing frames made of LSTK in our conditions is 40 years (due to corrosion of a galvanized profile, the durability of LSTK is low, compared with stone, concrete and brick buildings; LSTK elements are made of steel with zinc coating in two versions - up to 120 g / m 2 and more than 350 g / m 2. In the second option, the thickness of the zinc coating reaches 25 microns, which reliably protects steel from corrosion and provides a higher durability of the structure).
The manufacture of light steel thin-walled structures is carried out only at the factory.
Calculation and design should be trusted to professionals, and preferably with extensive experience. Also, the installation of LSTC elements should be carried out strictly according to the drawing, since ignoring the details of the drawing can lead to disastrous consequences, photo 9.
For construction in the CIS countries, there are practically no LSTC design standards. When designing LSTK in Europe, they are guided by DIN and Eurocode standards.
Low fire resistance steel structures building frame (it is necessary to increase it by making fire-resistant protective sheathing.
After a fire, the load-bearing structures of the LSTK frame cannot be restored and require a complete replacement.

Photo 9

Scope of LSTK

construction of enclosing structures in the construction of multi-storey buildings;
construction of low-rise buildings (cottages, townhouses) and ancillary buildings (garages, sheds, utility blocks, etc.);
construction of interfloor and attic floors;
construction of attic floors;
construction of warehouses, shops, garages;
arrangement of ventilated facades;
construction of office buildings;
construction of prefabricated and prefabricated buildings (structures);
execution of superstructures of existing buildings.

On the photo 10 examples of the use of LSTK construction technology are given.

Photo 10. Scope of LSTK technology

The publication was prepared by an expert

Konev Alexander Anatolievich

LSTK - light thin-walled structures made of metal (steel) up to 4 mm thick. The material is used for the rapid construction of structures using the same technology. In modern Europe, such production is called Light Gauge Steel Framing (LGSF).

The material belongs to a number of progressive building innovations used on the market. It is precisely such raw materials that promise a great future, because modern technologies do not stand still and will soon be construction market there will be more than enough offers of modern production, gradually replacing familiar goods.

Features of the use of LSTC in the construction industry

The use of technology can easily serve as an alternative to the frame wooden construction. This approach will help to reduce the cost and speed up the process of designing low-rise middle-class houses, hangars from LSTK.

Building elements are used as independent load-bearing structures for oversized buildings or in combination with standard building materials: wood, metal, brick, reinforced concrete.

Experience in the construction of thin-walled structures can boast of: Canada, USA, China. In neighboring countries, including the Russian Federation, the construction of MK (metal structures) and paintwork materials (light metal structures) is practiced by 46%. Both technologies differ significantly from LGSF construction.

How to recognize LSTC?

Light steel thin-walled structures are easy to identify by considering the following features:

Technical data of steel: thickness - 3-4 mm; yield strength - 255-355 MPa; elongation (relative) - at least 18%.
For the production of LSTC, rolled cold-rolled steel sheets with a galvanized coating and weighing at least 275 g/m 3 .
Cold-formed profiles of open and closed sections are the main elements of LSTK.
Thermal profiles with perforated walls are actively used in construction as enclosing structures. They possess unique property improvement of thermal performance.
To connect elements of thin-walled LSTK profiles, self-tapping screws made of stainless steel, carbon steel with zinc, cadmium coating are used.
While creating technical documentation in the design calculation, they show the joint work of all elements of the LSTK frame - internal, external skins, and other non-metallic structures.
The design uses special software: editors for two-dimensional and three-dimensional modeling.
The production of LSTK materials takes place at a specialized enterprise. At the construction site, only the assembly of the structure into one whole is carried out.
Each of the elements of the frame and skin is made in strict accordance with the working drawings. On each of the elements in right places markings are made or holes are drilled to connect the individual parts of the frame.

Basic structural elements

Profiled or perforated galvanized steel thin-walled profiles are among the main elements of LSTC, which are suitable for the manufacture of racks, lintels, guides, girders.

At the heart of the premises erected using the light-weight construction technology, there is a frame that is distinguished by rigidity and strength, which before assembly was a set of separate fragments.

For the construction of a house according to the principle of thin-walled structures, in 95% of cases a shallow foundation is used with the following parameters: 0.65 m height, 0.25-0.6 m width.

The sequence of actions during construction according to the LSTC model

Before starting work, read the recommendations:

First, determine the type of construction and the area of \u200b\u200bthe house.
Deal with billing and design work, on the basis of which draw up project documentation and determine required number building elements.
At the next stage, the production of materials for construction takes place, technological holes are made, marking is put for each of the elements, according to the prepared prefabricated drawings and plans. The production time of parts is 2-5 days.
All composite structures are transported to the site where the LSTK is assembled.

Completion of a building kit for building a house using LSTK technology

The building kit includes:

Profiles required size(according to the scheme);

Connecting fasteners of nodes;

Advantages of technology

The main advantages of this type of construction include:

High construction speed. Within six months, you will be able to move into a finished medium-sized residential building.
Lightweight designs. A building made of lightweight materials does not provide high pressure on the foundation or other foundation on which it is built. This is especially valuable if you want to build an add-on to an existing room.
All-season construction - a great opportunity to work with the material regardless of the level of humidity and weather conditions. Interestingly, in 85% of the design, wet processes are absent.
Simplicity in construction. 3-4 workers are enough to build a small residential building. The weight of 1 LSTK profile does not exceed 100 kg. Thus, a frame for a pavilion or barn with an area of 190 m 2 is mounted in 3 working days by a team of 4 people. Such structures are erected without the need to hire lifting equipment.
Seismic resistance, which makes such construction preferable in areas of high seismic activity (Japan).
Heat losses of buildings, which are minimized during the construction of LSTK structures.
Fast transportation of materials and elements.
Product quality guaranteed by the manufacturer.
Relatively low construction cost. 1 m 2 of turnkey housing will cost between $ 450-550.
Design features. The LSTC structure is relatively easy to dismantle and re-install in another location with minimal cost. On structures made of such material, it is possible to install different kind exterior finish: brick or sandwich panels, siding, lining, profiled sheet, etc.
Safe assembly. The installation of the frame is carried out without resorting to welding.
Biostability of the material. On a galvanized surface, neither fungi nor mold can take root.

Disadvantages of LSTC design technology

Despite more than a dozen positive differences, there are some drawbacks. Among these:

The durability of LSTK structures and buildings (structures) erected from them, in general, depends on the quality of materials and installation features. In the expanses of post-Soviet countries, the use of such technology is rather an innovation than a generally accepted trend. Therefore, the quality of production and installation falls short of the proper level. The period of operation of load-bearing frames is determined by a period of 35-40 years, depending on the climate.
It is better to entrust the calculation and design to a specialist. It is good if the performer has experience in the field of construction from LSTK.
The installation of each of the elements is carried out strictly according to the drawings. Any deviation can lead to serious violations affecting the strength and stability of the structure.
Norms for the design of LSTK structures in the CIS, as such, are practically not defined. In Europe, during construction, they are guided by DIN and Eurocode standards.
Low fire resistance metal frame. To increase the rate, special fireproof linings are used to seal the skeleton of the house.
In the event of a fire, the frame of the structure cannot be restored and requires a complete replacement.

The short duration of operation is explained by the negative impact on the galvanized surface of metal corrosion. LSTC are produced in two versions: with a zinc layer coating thickness of 120 g/m 2 and over 350 g/m 2 . Products from the second category with a zinc coating thickness of 25 microns show 12% higher resistance than the first. Therefore, they can last 5-7 years longer.

Demand for modern building materials

Prefabricated LSTK are becoming more and more popular every year. With the release of the production of modern building materials on new level the opportunity opens up to build all the same buildings with half the time and labor resources.

Lightweight thin-walled structures are being improved. The specialists managed to achieve a breakthrough in design, having opened the technology of construction of LSTK to the world. In 35% of countries, this innovation has taken root, in another 15% it reaches a new level of popularization.

Is it possible to imagine a few years earlier that already in 2017 the LSTK frame will be actively used for the design and further construction of houses intended for year-round use?

Of course, LSTK is not the last material that engineers have settled on. In the conditions of scientific and technological progress, which is developing by leaps and bounds, a new, even more advanced raw material will soon appear for the design of premises of any type.

As a consumer, when it comes to choosing building materials, choose those that suit your preferences and budget.

Building structures made of thin-walled metal profiles have a number of advantages and positive features, but, despite the large list of advantages, the LSTK technology sometimes has significant disadvantages associated with unscrupulous manufacturers. In Russia, the disadvantages of LSTC can be for several reasons.

Disadvantages of LSTK

Thin walls.

The first disadvantage can be summarized as thin wall". In our country, since the times of the USSR, people have become accustomed to quality, the characteristically high quality of manufactured products. So, there is an ambiguous opinion, which lies in the fact that LSTK structures are not strong enough and can be easily broken or damaged.

This is unsubstantiated information, which is devoid of confirmation, since when designing a structure, information is laid down with calculations of possible and critical operational loads, taking into account the climatic features of the region. Yes, individual elements(for example, a cold-formed LSTK profile) can be deformed by applying force, but, in its finished form, the LSTK design is a strong and rigid frame!

Low service life.

The second disadvantage is the service life. This is both an advantage and a disadvantage, everyone knows how modern capital structures are built, what “quality” residents have to face, therefore the disadvantage that determines the fragility of the structure also applies to all brick and concrete buildings. Is it possible to know for sure whether a house made of brick, stone and concrete will stand for 70 or 120 years? No one can answer this question with certainty. The same situation occurs in frame prefabricated construction, where the service life of a LSTK structure during professional assembly is 50-120 years or more.

Product quality discrepancy.

Basically, all the shortcomings of LSTK, which are common and known, take place exclusively in Russia. Do not trust the manufacture of a prefabricated building kit from LSTK to dubious factories and enterprises. Often, for the purpose of additional enrichment, "enterprising" owners of steel structures factories violate the quality standards of manufactured products, underestimating the real characteristics of products in pursuit of low cost. Such quality will not correspond to the declared characteristics. The standard, typical case is a decrease in the thickness of the profile and the zinc layer, which negatively affects the quality and reliability of the future structure. This disadvantage can be avoided by entrusting the design, construction and manufacture of products to trusted enterprises with a positive reputation in the LSTC services market.

Dependence of the buyer on the manufacturer.

This is the second disadvantage of LSTK, which relates to the previous, manufacturing disadvantage. If any item was produced in violation of geometric shape or the kit was lost important detail design, installation problems may arise. At any stage of construction, a situation may arise when the parts do not fit together or there is not enough fastener.

Electromagnetic safety of LSTC.

AT Russian Federation, unfortunately, there are still no conclusions about the electromagnetic safety of living in houses made of light steel thin-walled frame. Missing information in possible threats for human life in the house from metal profile. This shortcoming also takes place only in our country, many enterprises that monitor the quality and their image, adopt and use international standards in the construction of prefabricated LSTK structures. LSTC structures built according to international and European standards are safe for living.

Human factor.

The construction of any structure made of light steel thin-walled profile and profiled sheet should be carried out by highly qualified professional workers. The safety of the structure depends on the level of the specialist.

Embedding furniture.

This disadvantage can be attributed to low-rise, residential buildings where you need to equip the interior. The furniture is mounted on a solid surface (walls), so you need to think in advance about the places where the cabinet or picture, shelves or any other objects will be installed. In places where furniture will be attached, the walls of the LSTK house are additionally reinforced with transverse platforms made of boards or timber.

High level of fire hazard.

The LSTK technology has disadvantages that manifest themselves with the onset of a fire inside the building. Steel profiles under the influence of high temperatures begin to deform, lose rigidity and bend under a higher load. The design takes into account all these shortcomings, so take the time to additionally protect the structure from fire and fire with special flame retardants (impregnations).

Low bearing strength.

Many believe that the LSTK construction cannot cope with the weight load on the frame. This opinion is erroneous and cannot be attributed to shortcomings. Each project is unique, the possible permissible load and the critical load that the building can support. Another refutation of this shortcoming is the high popularity frame construction from LSTK in Japan, the country rising sun, where it is observed high level seismic activity.

Pros and cons of LSTC:

The construction of light steel thin-walled structures (LSTC) has its advantages and disadvantages. The advantages have been verified by numerous experiments of reputable Western organizations. So, for example, Japanese scientists conducted a test that confirms the high service life of LSTC. During the experiment, the LSTC elements were placed in a highly aggressive environment of sea water and remained unharmed. Cons LSTC have mixed opinions, certain news agencies, frame construction is safe and cost-effective.

Advantages of LSTC:

Environmental friendliness.
Low cost.
Fast construction time.
Easy installation.
High service life.
Seismic resistance.
All-weather installation.
No shrinkage on .
Excellent heat saving.
Detail geometry accuracy.
Factory quality.
Compact for transport.

Pluses reasonably win over all the shortcomings of LSTC. Metal frame buildings are widely demanded and popular all over the world. Trust construction and design to professionals.

Video about the LSTK house:

LSTK designs are quite widespread today, the scope of their use is quite diverse. The abbreviation stands for light steel thin-walled structures.

Application area

The mentioned structures are actively used in the construction of public buildings, cottages, shops, as well as garages. Similar steel systems quite often today can be found at the heart of hotels, sports facilities, medical centers. Private builders have adapted such structures for the construction of attics, roofs, the latter of which have wide spans. In European countries, LSTC have been common for half a century.

Characteristics of LSTK

LSTC structures are built using a material whose thickness does not exceed 4 mm. In the works, it is used which is produced by the method of cold rolling, and is sold in rolls. The structures are based on profiles that were formed during the production process by a cold method. Their section can be open or closed. The peculiarity of LSTK allows them to be used in the construction of enclosing structures, among which walls and ceilings can be distinguished, but this is far from a complete list.

LSTC structures may include thin-walled profiles that were previously perforated in the wall area, they are also called "thermal profiles". Their main purpose is to improve the thermal performance thermal circuit buildings and ventilation in the heat insulator.

The described components are mated by means of screws, which are of excellent quality and require a self-drilling installation, and they are made of corrosion-resistant steel. As an alternative, for such products can be used carbon steel, which is coated during production with a cadmium or zinc composition. You can get acquainted with the range of profiles, for example, produced by Astekhome LLC, at http://astekhome.ru/lstk.

LSTC construction technology

LSTK structures are built using materials that do not contain metal, these can be drywall, gypsum plasterboard, etc. These coatings are installed on profiles, or, in other words, racks. This is done both outside and inside the buildings. The technology involves the rejection of wet work, which is very common today due to the convenience and speed of work.

This technology is also chosen because, as a result, the building is lightweight, so its mass is 30 kg / m 2. As for the two-story building, the weight increases to 38 kg / m 2. But this does not prevent buildings from being stable and durable. That is why LSTK are built in seismically hazardous areas, to the phenomena of which they are especially resistant. All this is combined with ease of assembly, which increases labor productivity by 2 times.

Consumer reviews

LSTC structures are quite actively used in private construction. Consumers, choosing this technology, note that with its help it is quite simple to build attic floors, which do not exert a significant load on the foundation. Many residents of seismically hazardous areas say that this has become an indispensable solution for them to build houses that are especially resistant during earthquakes. But when arranging a ventilated facade, one cannot do without steel structures at all. Their consumers choose much more often wooden ones. Buyers note that steel elements last for a longer period of time, do not require repair, and do not deform when wet. Buyers prefer if they are faced with the task of replacing flat roof on a slope.

Economy Reviews

Today, perhaps, there is not a single person who would not seek to save money during repairs and construction. If concrete is replaced with steel structures, as the owners of private houses and apartments say, then it turns out to save at the time of transporting the material, during its installation and subsequent operation, because concrete requires repair when the building shrinks, but steel elements do not. In addition, private craftsmen and professional builders claim that steel is more often chosen than brick and mortar, since the installation of the first material takes less time and does not require the use of expensive construction equipment.

Features of the calculation of LSTC

LSTC structures are calculated before design. Data on the loads that will affect the supporting structures are taken into account first of all. Why are the forces that will occur in columns, coverage runs, coverage trusses, and also, but this is not the whole list, determined. The next step is to calculate the cross section. It is also important to determine which profiles are supposed to be used, and then you can start designing elements.

Light steel thin-walled structures (LSTS) should be assembled using the simplest and most durable connections. In this case, bolts can be used, but the welding method is not held in high esteem, since there is a possibility of lack of penetration, which will weaken the profile section. When calculating, experts will take into account external influences. environment. This will reduce the influence of wind, precipitation, soil vibrations. In order to install a light building, a shallow foundation will be sufficient for it, while it should be taken into account that seismic phenomena in the construction area should be minimal.

Fencing LSTC

LSTK structures, reviews of which, as a rule, are only positive, can also be used as fences. LSTK can be used in tandem with ecowool-type insulation, which only improves the quality of the system. If we compare such a wall, which is 100 mm thinner than the one built from lightweight cellular concrete, then it loses heat less by 1.5 times. This suggests that the savings on heating in cold weather will be impressive. In addition, there is an opportunity to win free space in the premises of the dwelling. After all, it will be less.

Advantages of LSTC over structures made of other materials

Lightweight structures, the photos of which can be seen in the article, win the fight against the so traditional today and many years ago. They are quite often used in high-rise construction, since such enclosing systems greatly speed up the work, they have a much lower load, and for installation does not have to resort to expensive assistance professional builders. But a private master, in addition, will be able to avoid the need for wet work associated with the solution: its kneading and laying. Construction machinery may be needed only in order to be able to raise the steel elements to the desired floor, which is completely irrelevant when conducting private construction. But if you are building a two- or three-story house, then you can exclude rent for lifting structures by using a winch.

If LSTK is used as the basis of the house, the enclosing structures, as well as the main walls, can be built from them, while it becomes possible to build a house with up to four floors. If you are just going to build your house, then a lot of concrete work can be replaced with technology based on LSTC. This will save on materials, speed up the process and eliminate the need for wet work, which requires the master to have certain skills that are not required when assembling a house from light steel elements. But it is preferable to entrust the calculation of the LSTK design to professionals.

Frame houses built modern technology made of light steel thin-walled structures, differ high speed construction, low cost construction works and excellent strength properties. What is good about building a house using LSTK technology is the variety of ready-made standard projects, from which you can order a frame kit at a metalwork factory.

Yes, this is exactly what citizens of our country often do, because houses using LSTC technology can be purchased ready-made, a specially assembled house kit, which is transported to the construction site for further installation.

Houses using LSTK technology are very common in all regions of our country. Construction is always a costly undertaking, but with the advent of frame construction and the introduction of these technologies in the civil sector, much has changed, now it has become possible to build a house 5-6 times cheaper than a conventional brick capital structure.

LGSF technology: origin and development

The abbreviation LSTK stands for light steel thin-walled construction. The elements of the metal structure include profiled sheets of high-strength galvanized steel with a thickness of 2-4 mm and thin-walled profiles.

The technology for the construction of metal structures from light thin-walled steel was developed by Canadian engineers in 1950. At that time, Canada needed high-quality and inexpensive construction of low-rise buildings for the middle class of the population. Mass production, the availability of material and the possibility of using technology in industrial and industrial construction set a positive development vector for decades to come.

Since 1950, the construction of houses and other frame structures using the LSTK technology has become popular in North America, Japan and Scandinavian countries. In Russia, houses using LSTK technology began to be actively built in 2000, when state standards for the construction of metal structures were approved. Until 2000 and at the present time, many enterprises build houses using LSTK technology in accordance with not Russian, but more faithful and reliable European and international standards.

Today, the construction of frames from light steel thin-walled structures is available to everyone: enterprises provide design and construction services, as well as actively sell ready-made house kits.

What are houses built using LSTK technology?

As you already understood, a high-strength galvanized metal profile 3-4 mm thick is used for the construction of the structure. The LSTK profile can be of two types: ordinary (without a longitudinal section) and thermal profile (with a section that increases the thermal characteristics of the walls).

Galvanized metal has high strength, does not give in to corrosion, the appearance of cracks and breakages is excluded. Frame elements are not afraid of temperature changes, humidity or microorganisms. Manufacturers guarantee the quality of all manufactured elements of the metal frame. All parts are marked and have the necessary mounting holes; in the assembly, all parts are securely and firmly connected to each other, forming a solid structure.

Construction of houses using LSTK technology: advantages and disadvantages

All innovative technologies in Russia they are greeted with caution, they are waiting for time will pass to know the exact results and efficiency on real examples. Steel Structure Construction Technology turned 65 years old in 2015, over the years LSTK construction has grown enormously, displacing capital construction in the sector of low-rise residential buildings.

Advantages of LSTK technology

Disadvantages of LSTK technology

The shortcomings of the LSTK technology take place, probably, only in our country. Often, manufacturers of light steel structures produce products that do not meet the declared quality and do not meet the standards. A typical case is the purposeful reduction of the profile thickness with a lower zinc layer (less than 120 g/m2). Also, many “offices” during test assemblies and dismantling may lose a screw or panel, which will make it problematic to install a house using LSTC technology, because the entire frame set is made in a single copy with a set of fasteners, which is provided for by the project documentation.

Reviews speak mainly about the advantages of building a house using LSTK technology, since they are more common than negative ones.

How is the construction of a house using LSTC technology

The entire construction process consists of several stages:

Order of project documentation (project of the LSTK house).
Order for the manufacture of a house kit.
Delivery to the place of assembly.
Foundation preparation
Installation of a metal structure.

The most important thing in construction is the design of the house. It is the project of the house that determines the intended purpose of the future structure, options for thermal insulation, roofing, all Supplies and much more. Available for order today in a wide range standard projects which are much cheaper than custom design.

Until the project is determined and the manufacture of the frame of the house using the LSTK technology at the factory is ordered, you can begin to prepare the foundation at the construction site.

Any construction begins with the construction of the foundation. The site needs to be prepared, cleaned and poured the foundation around the perimeter of the house in accordance with the project documentation. Mortgages are left in the corners for attaching the metal frame.

A ready-made set of houses from LSTK can be installed immediately after the foundation is ready. The assembly of the metal frame begins from the corners, intermediate racks are mounted and connected by transverse profiles. Empty place filled with insulation. An excellent option for insulation is mineral wool (plates), which does not undergo combustion. Inner side walls are sheathed with a double sheet of drywall, and outer side profiled galvanized sheet, siding, sandwich panels, clapboard and other similar materials.

After the walls are erected, you can proceed with the installation of the floor (if the house has more than 1 floor) or ceiling beams. This design holds the rafters. The installation of the roof is completed with a sheathing and covering with roofing material.

All Construction Materials, used in building a house using LSTK technology, are of artificial origin, low cost and are becoming more popular every day. AT finishing works can be used various options natural wood: timber, sheet pile, block house, etc. modern construction does not stand still and is developing rapidly, LSTK is a technology of the future that can be used today.

Finished houses built using LSTC technology are reliable and durable structures, whose service life in some cases exceeds the service life of capital structures, reaching 60-120 years.