Pros and cons of screw piles. Advantages and disadvantages of screw piles Pros of screw piles

Before considering the pros and cons of foundations of this type, you should familiarize yourself with the most common negative reviews about screw piles and find out whether they are objective (not dependent on circumstances) or subjective (caused by certain factors).

A pile foundation was chosen due to the uneven terrain of the purchased site. An unpleasant surprise awaited us - it turns out that it is very difficult to put a brick house on piles. Not a single performer undertook to realize our idea. We were very upset, because we had read before that a pile foundation is a universal solution.

It's good that only a bathhouse was placed on stilts. A year later, subsidence became noticeable, but then it was still tolerable. After another year, it became clear that additional repair costs would be required. It remains to be glad that the residential building stands on an ordinary concrete slab and will not present such unpleasant surprises.

I did not have to evaluate the advantages of screw piles. They said that they cannot be screwed into our stony soil. Here's some new technology...

The piles began to rust. I can't imagine what to do now. The contractors who installed the foundation almost never answer the phone, and when they do get through, they don't say anything definitive.

A specialist who is well versed in pile construction technology will definitely explain that the first and third reviews are subjective. Indeed, the construction of brick houses on piles is difficult and, in many cases, impractical. Installation of piles in rocky soil is also impossible due to its high hardness and density.

The appearance of rust on the supports and subsidence, with a high degree of probability, are the results of a violation of the installation technology or the use of cheap piles made of cheap thin low-quality metal without a protective coating.

What caused the negative reviews about screw piles?

The objective disadvantages of foundations on screw piles should be considered limitations in the scope of use - the inability to use on rocky and stony soils and the inappropriate use in the construction of brick houses.

However, screw piles, in addition to minuses, have their pluses:

• possibility of all-weather installation,
• earthwork minimization,
• durability And wide range of applications,
• suitability for use in difficult areas(wetlands, uneven terrain, etc.).

Less significant than the above, but significant disadvantages of pile supports include the difficulty of monitoring the safety of the anti-corrosion coating during the installation of the pile (in a collision with a stone or other solid obstacle, a scratch may form, which will become a corrosion center).

The presence of problems with the design of the basement - the cost of cladding significantly increases construction costs, and without it the house looks unpresentable.

The impossibility of arranging an insulated subfloor, as a result of which the risk of freezing of water and sewer lines increases.

Pile foundation after construction

Consideration of possible problems after the construction of structures on pile foundations and the probable causes of their occurrence will help to avoid errors in the selection and installation of structures.

The declared service life of pile foundations reaches 100 years. There is no actual confirmation of such possibilities due to the fact that the technology has been applied relatively recently. Manufacturers separately stipulate the conditions under which they guarantee the possibility of long-term operation of pile supports:

• accuracy of engineering calculations when designing foundations, taking into account the data obtained during the study of the soil (for these purposes, a test pile is often installed),
• the right choice of piles by type and geometry,
• high quality supports(sufficient thickness of the metal, the use of strong alloys, the presence of an anti-corrosion layer), the absence of violations at the installation stage.

Is it worth building a house on screw piles?

The foundation on screw piles has both disadvantages and obvious advantages. Experts with an unbiased opinion argue that the choice of a pile foundation is justified. If the conditions on the site fully meet the requirements. It is optimal to use pile supports for relatively light structures, for example, wooden buildings with 1-2 floors. When erecting large-scale structures, the load on each support may be too large.

Sidebars

Concreting and installation of the grillage increases the reliability of the pile foundation, but reduces its maintainability. It is extremely difficult to extract a pile that has begun to collapse from corrosion from such a foundation and replace it with a new one.

It is unacceptable to install a pile in more than one step. If during the screwing process a deviation from the vertical position was detected, the pile is left and cut off, installing a replacement for it at a short distance. Unscrewing and re-installing reduces the bearing capacity and reliability of the support.

When listing the advantages of pile supports, the possibility of reuse is often mentioned. This statement is true only for piles without concreting, which are used for the construction of temporary housing and outbuildings.

You can draw your own conclusions by watching the video:

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During the construction of any object - residential or industrial - it is very important to choose the right foundation.

It is the quality of the foundation that determines the durability and strength of the entire building, so technologies in this area are constantly being improved.

One of the most interesting and affordable solutions is, which is widely used in the construction of private houses and cottages. Consider this screw foundation: the pros and cons, the cost of construction, service life and other features - later in the article.

main element such ground are screw piles- steel pipes with pointed tips welded to them with blades and threads or a combined thread.

When arranging a pile-screw structure, the piles are screwed into the ground both manually and using special equipment in such a way that their base is below the freezing level of the soil and is surrounded by soil as tightly as possible. Considering the foundation on screw piles: the pros and cons of the design should also not be ignored.

Reference! Bladed screw piles are a little more expensive, but their design provides perfect soil compaction and increases the stability of the foundation.

The most important advantages

The pile-screw foundation has its pros and cons, of course, but the number of the latter is so insignificant that today the foundation on piles is quite in demand.

Advantages pile-screw foundation, which explain the popularity of such a foundation, are as follows:

1. Possibility of installation on unstable soils or in areas with difficult terrain. In practice, on loamy, sandy or marshy soils, pile-screw design options turn out to be much more reliable than slab and strip foundations.
2. Affordable price. With the same base area, the strip foundation will cost 5, and its tiled counterpart - 3 times more expensive than the installation of screw piles. Given that the construction of even a small house is not cheap, this is a significant plus.
3. Fast installation. Building a house on screw piles of an average area (about 100 sq. M) will take even an inexperienced construction team no more than 2 days, and qualified specialists can even handle it in a day.
4. The possibility of erecting walls immediately after the arrangement of the base. As soon as the installation of screw piles is completed, you can immediately continue building the house. In the case of reinforced concrete structures, it will be necessary to wait for their shrinkage for at least a month.
5. during the cold season. Pouring a reinforced concrete base in winter is associated with certain technical difficulties and is quite expensive. Screw piles are free from this drawback due to their high resistance to soil heaving even in cold weather.
6. Ease of installation. Unlike slab and tape analogues, the owner of a building on screw piles does not have to order special equipment, clear access ways for it or mix concrete, which significantly saves money and effort. In addition, it does not require concreting: it is often performed using a wooden beam or channel.
7. Clean area. The installation of screw piles eliminates such minor troubles as spilled concrete or mountains of earth on the site, typical for the arrangement of other foundations, traces from the wheels of special equipment at the porch of the house.
8. Warm and dry floor in the house. The peculiarity of such a base is that there is a small air gap between the soil layer and the floor of the building, which is a good heat insulator. The use of piles avoids high humidity in the structure due to groundwater seepage.
9. Possibility to build an extension. The use of screw piles allows you to change the layout of the building without serious additional costs.

Attention! If the site has a large slope (up to 5-8 m), it is not advisable to make a reinforced concrete base. Screw piles are installed on such terrain without problems.

Flaws

With proper installation of screw piles, it is unlikely that you will encounter particularly unpleasant surprises, but still certain disadvantages of a pile-screw foundation are worth noting.

The foundation on screw piles has the following flaws:

1. Low product quality. Some manufacturers, in an attempt to save money, treat piles with poor anti-corrosion compounds, which significantly reduces their service life in soils with high humidity.
2. Difficulties in the arrangement of the basement. The disadvantages of the pile-screw foundation are also that the design itself does not provide for the use of the base as basement walls, so the arrangement of the premises will require more time and money.
3. Impossibility of installation on some types of soils. For example, in rocky soils, the pile simply will not enter to the desired depth.

Despite the fact that the foundation on screw piles has disadvantages, they are rather insignificant, as a result of which the use of such a foundation in private construction is quite justified.

Attention! The foundation of the house in the form of screw piles is permissible only in frame, frame-panel or wooden structures due to its uneven shrinkage. In the case of brick or other heavy houses, this can cause gradual destruction of the structure.

Life time

What is the difference between the screw foundation: the pros and cons of such a foundation together make up a fairly long service life. Average life time screw piles under the foundation is about 50 years old.

The main influence is exerted by the following factors:

• service life of the pile-screw foundation depends on the characteristics of the soil(humidity, composition, air permeability, electrical conductivity, etc.) and the climate of the area (in particular, temperature differences);
• non-compliance of piles with building standards: many manufacturers offer products with pipes of a smaller diameter than necessary or blades with one turn;
• poor quality pile cover poor protection against corrosion.

Important! Products made of alloy steel (30XMA, St20) of sufficient thickness (wall thickness from 4.5 mm) are the least susceptible to rust. They are least affected by factors associated with soil and atmospheric corrosion.

However, the design on screw supports will be more durable, if you use one of the following when arranging additional ways to protect:

• zinc coating(hot or cold galvanizing method), which effectively fights atmospheric corrosion;
• applying paint coating, consisting of two layers - primer and proper protective;
• pile concreting, in which the channel of the steel barrel is filled with concrete or cement mortar, which helps prevent corrosion on the internal surfaces of the product;
• with simultaneous installation of a drainage system to remove excess moisture from the base.

Any type of foundation will sooner or later require attention. To renew the service life, you can execute.

Construction in winter

Is it possible to make a pile-screw foundation in winter? Installation of screw piles is also possible in the winter season, as they are installed below the freezing level of the soil.

The configuration features of the blade provide a uniform load on the ground, so that if you build a foundation on screw piles in winter, winter swelling will not cause damage to the foundation.

It is possible to build a pile-screw foundation in winter, however, when arranging, it is important to take into account the following features:

1. Frozen soil is very hard, so the support blade will not screw in, but practically drill through the soil, which increases the installation time, so it is advisable to remove snow from the site immediately before installing the foundation to prevent even deeper freezing of the soil.
2. The pile cavity is often filled with cement mortar. to avoid corrosion and to increase the bearing capacity of the foundation. In cement need to add a special, which reduces the freezing point of the solution, and use a minimum of water. This will prevent the pile from breaking from the inside and the destruction of the foundation.

Additional information about the use of screw piles in winter is presented in the video below:

Comparison with other bases

Deciding on the type of foundation for a house can be quite difficult, so it’s worth exploring the advantages of one or another option. Screw piles or strip foundation: what to choose? Let's figure it out.

Which is better: strip foundation or screw piles?

The fact is that the low bearing capacity of screw piles will not be able to support the weight of a building made of heavy building materials (for example, bricks, reinforced concrete).

In this case, it is worth stopping the choice on a tape basis.

The strip foundation is characterized by a small consumption of building materials. However, on unstable soils or in areas with complex terrain, the pile-screw foundation has no competitors. Screw piles are ideal if access to the site is difficult for special equipment: you can just do without it.

Screw or columnar?

Screw piles or are not recommended for installation in case of heavy brick or concrete structures.

Important! A columnar base is only suitable for soils with normal bearing capacity, since it tends to move in a horizontal direction. In this case, you can not do without a grillage - a reinforced concrete beam that connects the pillars from above.

Screw piles should be given priority when building on difficult soils with an unstable and weak top layer, which guarantees the stability of the structure.

Useful video

Details about the pros and cons of the pile-screw foundation are described in the video below:

conclusions

Pile-screw foundation has many advantages which make it an excellent choice for custom construction. However, his certain features must be taken into account when installing, and then the foundation of the house will not require repairs for a very long time.

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The foundation is the foundation of any structure. Its pile-screw version is often used by developers in the construction of country cottages and houses. This technology is especially relevant for northern latitudes and in areas with poor soil bearing capacity.

A well-built pile foundation, the pros and cons of which should be taken into account during construction, allows you to create durable buildings that are not afraid of flooding. The work carried out is quite simple and is carried out in any season of the year.

Pile-screw foundation: purpose, types, materials used

In difficult soils it is recommended to use piles

A pile-screw base for the construction of a building will be the best option in areas with wet, unstable soil and complex relief.

But due to its bearing capacity, the most common structures on it are frame, wooden houses, small structures made of stone (porous), hollow bricks, and fences.

Screw piles have spiral augers

The technology of work is as follows:

• pointed, metal pipes with blades at the ends (spiral screws) are twisted into the soil surface;
• the part remaining on the surface is driven out to the desired height under one level;
• structural elements are interconnected: the grillage is combined.

Supports need to be immersed in the ground to a depth of 1.5 to 7 m. Their required height is achieved by building up. They withstand loads from 2.5 to 7 tons per one (it depends on the type, size).

With their help, the following types of foundations are built:

• tape of piles: supports are installed under the walls of the structure under construction in one or several rows;
• standard: piles are installed under the bearing parts of structures;
• the use of single screws: this is how they support individual elements of structures;
• "pile field": the supports are screwed over the entire surface allotted for the house.

The pile must end below the freezing level

The screws are made of steel pipes with an average wall thickness of 8 to 12 mm and a diameter of 50 to 350 mm. The blades ("threads") are made perpendicular to the pipe axis, their diameter is from 200 to 900 mm. They prevent the extrusion of piles from the soil, contribute to the distribution of pressure on the supports from the structure.

Such drills are introduced below the freezing line of the soil.

Various types of screw piles have advantages and disadvantages, like any other material.

Their species diversity according to the method of making tips is as follows:

• with welded blades, where their quality greatly depends on the skills of the welder;
• with cast ends - a more reliable expensive option.

Pile foundation - a cheap and easy solution to the problem of a site with elevation changes

The advantages of screw piles are:

• environmental safety of the material;
• a wide range of applications;
• relatively low labor costs for installation;
• the possibility of repeated and year-round use, additional strengthening;
• long service life.

The disadvantages of screw piles are reduced to the susceptibility of the product to corrosion and the great difficulty in working with rocky soils. It should be chosen based on the quality of the pipe and its surface. The best solution is a galvanized product coated with a polymer-powder composition.

Advantages and disadvantages of pile-screw structures

The installation of such piles does not require excavation

Screw pile foundations are a good option for relatively small buildings.

The best pillow for the construction of structures on piles is loamy soils, or sand and gravel mixtures.

The advantages and disadvantages of the foundation of screw piles are shown in the table.

№	Advantages	Flaws
1	affordable price	poor quality piles
2	relative lightness and ease of creation	building a basement is quite problematic
3	high speed installation of piles	in very hard soils (stone) it is impossible to introduce screw supports to a sufficient depth
4	low requirements for evenness of the construction site	limited mass of structures erected on screw piles: suitable for light structures

After installing the piles, there is no excavated soil and construction debris (spilled concrete).

On screw piles immediately after their installation, you can build a building. They do not need time to shrink. Building up the foundation in the event of design changes and repairing it (when the pile bursts) will not be particularly difficult.

In the ground, the individual elements of the pile structure are not connected to each other. Shrinkage over time under load will be different for each pile. Heavy concrete (or brick) buildings may not withstand this: their walls will burst. Wooden houses and light frame structures calmly endure such shifts. For more information about the installation of piles, see this video:

Make sure that the piles are well treated with a protective compound

From the acquisition of low-quality building material no one is insured.

If metal piles have been treated with a poor anti-corrosion compound, they will rot ahead of time.

It can also be used in the production of low-quality metal, or the walls of the supports are made thinner.

The disadvantages of the pile-screw type of foundation are fully compensated by its advantages.

Nuances in the construction of a pile-screw foundation

Screw piles have pros and cons that must be taken into account. The final choice of the type of foundation for the building depends on their influence. It should be taken into account that:

• the average operating time of metal supports is up to 60 years, and even less in a humid, acidic, alkaline environment;
• the building surface does not need to be leveled, thoroughly cleaned, waterproofed;
• as practice shows, the use of pile-screw technology for creating a foundation is cheaper (starting from 20%) than columnar and tape types;
• for the installation of screw supports, 3 workers are enough;
• all work can be done manually without the use of special equipment and expensive fixtures and tools;
• the presence of slopes, height differences (up to 10 m) on the ground - are not an obstacle to construction;
• pile structures can be erected without additional costs at any ambient temperatures acceptable to humans;
• installation of this type of foundation in most cases takes 1-2 days (the time depends on the qualifications of the workers, the type of soil, the required depth of the supports);
• it will turn out to build a basement in the form of a separate structure, because the foundation is not suitable as its walls;
• the presence of an air layer prevents heat loss through the base of the house, the building does not draw moisture from the ground;
• material costs increase if hard rocks are deeper than 8 m, because it will be necessary to build up products;
• the load that the drills can withstand depends on their diameter, soil characteristics. For more information about the nuances of installation, see this video:

The foundation on screw piles has been used since the middle of the 19th century.

It gained its distribution due to its high practicality on unstable, frozen soils.

An important role in this matter was played by its cheapness and relative simplicity of arrangement.

Proper selection of materials, following the construction technology and regulatory documentation allows you to get a reliable, strong, durable support structure. Like any other type of foundation, a pile-screw foundation has pros and cons, among which the former predominate.

11.02.2016 0 Comments

Pile-screw foundations have become widely used in construction relatively recently. But at the same time, today many objects are being built precisely on such grounds. Well, this is quite understandable - the scope of this foundation is quite wide, and the advantages are numerous. Therefore, it is not surprising that today this type of foundation has gained considerable popularity in various types of construction.

Of course, before making the final choice, you need to find out which pile-screw foundations have pros and cons, so that you don’t have to regret an unsuccessful choice later. It will not be superfluous to learn about when the use of this foundation is optimal, as well as about the installation process.

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Application area

Initially, pile-screw foundations were used in the construction of piers. But the military developed this idea, significantly expanding the scope of use. And today this type of foundation is widely used in private construction. The production technology of screw piles has been significantly improved - special high-strength steel is used to create them. In addition, some piles have special blades on the head, which further compact the soil layer adjacent to them.

Therefore, this type of foundation can be a good choice when building in difficult areas. This may include:

• areas with slopes, hills, depressions;
• areas with heaving soil;
• peat areas;
• regions with deep freezing of the soil.

It is rather problematic to conduct construction on all these sites using traditional types of foundations (monolithic, columnar or tape). In addition, even with proper installation, in such areas, an ordinary foundation can be destroyed in a few years - due to the seasonal difference in groundwater, as well as soil freezing. But the pile-screw foundation will easily serve in such circumstances for several years.

Carrying out preparatory work

Arriving at the site, experts conduct an inspection of the area, and also study the type of soil. If necessary, test drilling is carried out. Only on the basis of the data received, an individual project is drawn up, suitable for a particular house in a particular area. Based on this project, the installation of a pile-screw foundation is being carried out.

First of all, the number of piles is determined. It depends not only on the size of the building and the main material used (and therefore the weight of the entire structure), but also on the characteristics of the soil. On normal soils, piles are installed at a distance of three meters, but on weak soils this number is significantly reduced. Therefore, it is extremely important to correctly calculate how many piles to use during construction.

In addition, a preliminary inspection allows you to choose the best materials. For example, after making the necessary calculations, experts accurately determine the diameter and length of the piles. These parameters are directly affected by the depth of freezing and heaving of the soil.

Finally, the most suitable tip type is selected. Today, cast and welded tips are used in construction, having blades of different sizes and shapes. You can choose a specific option only by examining the characteristics of the soil.

When the project is drawn up and materials are selected, the construction of the foundation begins.

Briefly about the installation of a pile-screw foundation

The foundation device begins with the placement of piles. The work is carried out in strict accordance with the previously developed project. It should contain information about the location of the piles, as well as the depth of screwing. First, pits are made in the marked places (small depressions no more than 15-20 centimeters). Piles are screwed into them, and the installers make sure that they are located exactly perpendicular to the surface of the earth. This stage can be performed both using special equipment and manually. Throughout the procedure, the vertical position of the piles is checked - the slightest mistake can cause the pile-screw foundation to quickly fail. For this, a level is used - the maximum deviation from the vertical should not exceed 2 degrees.

After screwing is completed, concreting is carried out. A mixture of sand and cement is poured or poured into each pile. It displaces air, reducing the risk of corrosion damage to the structure.

In some cases, binding is an obligatory stage of work. After the mixture has hardened, all piles are interconnected with a metal channel or a strong beam. The material is selected individually, depending on the characteristics of a particular building. In some cases, tying is not mandatory, for example, if the piles rise above the ground by no more than half a meter.

The last stage of construction is the treatment with anti-corrosion enamels. All welded seams are carefully cleaned and covered with protective enamel. After that, the installation of the pile-screw foundation is considered completed.

The main advantages of this foundation

Before starting construction, you should find out what advantages a pile-screw foundation has.

One of the main advantages of this foundation is the complete absence of earthworks. If the construction technology of all other types of foundations involves excavation (more for slab and less for column), then the piles of this foundation are simply screwed into the ground. This saves at least a few days of work. As a result, if the work plan is organized correctly, the foundation can be prepared in the shortest possible time - from 1 to 4 days, even for fairly large buildings.

No less important is what this foundation is the best choice for the construction of any buildings on swampy soil. In such areas, it is almost impossible to use other foundations - they will go into weak soil. Piles are deepened until they rest against a solid layer of soil. It is on him that the load from the building will be transferred.

Many future property owners are attracted by the fact that the installation of a pile-screw foundation can be carried out at any time of the year - both in winter and in summer. Moreover, in winter it is even better to do this work - the frozen ground will be less damaged by the wheels of heavy equipment, which is often used in construction.

Medium and small piles can be installed using light tools, that is, without the use of specialized equipment, which significantly reduces the cost of work.

This foundation is perfect for the construction of temporary buildings or cabins in problem areas. When it comes time to move the shed, the piles can be removed and reused. Their reliability and durability do not suffer at all, of course, if the installation and dismantling were carried out correctly.

This type of foundation is also the best choice when carrying out construction in areas with dense buildings. In such cases, the use of heavy equipment is difficult, so excavation is quite difficult. But nothing prevents you from installing medium or short piles manually.

Cons to be aware of

When choosing a foundation, it is very important to know about its merits. But it is equally important to remember what disadvantages it has. This will avoid serious mistakes that can affect both the life of the constructed building and its safety.

The main disadvantage is the impossibility of doing the work with your own hands. If you can pour a columnar or strip foundation for a private house on your own, with minimal knowledge and skills, then you need to have specialized knowledge to build a pile-strip foundation. Without this, it is impossible to correctly calculate the number of piles, their thickness and depth. It is also necessary to carefully study the structure of the soil, its properties and seasonal fluctuations in a particular area. The complex composition of the soil, the problematic relief, the high level of groundwater - all this does not interfere with the construction of a pile-screw foundation, but can cause serious problems if these factors are not taken into account during construction. It is important that when installing this foundation, you need to use the appropriate equipment.

It is very important to accurately calculate the load from the building and correctly distribute it over the bearing soil.. If you make even minor mistakes, there is a danger that the house will simply warp. Perhaps this will not happen immediately after construction is completed, but in 3-5 years, but such a risk always remains. And in this case, every year the bias will be more and more noticeable. Over time, this can lead to the destruction of the house.

The same can happen if builders do not constantly monitor the minimum vertical deviations.

Another important point - the piles are made of metal, which can corrode. To prevent this from happening, experts use special enamels that retain metal parts for a long time. Several layers of enamel ensure the safety of the protective layer both during operation and during installation. Thanks to this, the quality and bearing capacity of piles does not suffer.

In sum, all this makes the independent construction of the foundation completely impossible. You have to turn to specialists, for whose services you will have to pay a certain amount. The extra spending doesn't sit well with many people.

But there are other limitations as well. For example, a pile-screw foundation cannot be used in construction on rocks or on soils that include coarse-grained inclusions. An attempt to screw piles into the ground in such areas usually ends very sadly. At a minimum, the blades are damaged, which makes further installation impossible. In this case, an oversight is noticed instantly. But even worse if the anti-corrosion coating is damaged. This often leads to the fact that the piles are quickly damaged by rust, and the reliability of the foundation is rapidly declining in a matter of years.

Another important drawback is the impossibility of arranging a basement under buildings. Many people who decide to build their own house expect to place a garage, workshop or just an underground for long-term food storage under it. For them, a pile-screw foundation will not be the best solution.

As you can see, this basis has its advantages and disadvantages. Knowing about them, you can definitely decide whether this foundation suits you, or whether it would be better to choose another one.

If you still doubt the choice, then we advise you to watch the video material on this topic.

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Or a small country house.

Where do you start? From the choice of materials from which the house and foundation will be built, from the calculations and the project.

And as always, as a result, we come to a standard strip concrete foundation.

But we want to make your life easier and we suggest considering the option of building a house on stilts.

The pile technology for building houses came to us from North America, but few people know that this technology was widely used in the USSR, and logs with a diameter of 200 mm from pine, oak or larch were used as piles. They were treated with drying oil or burned, and then the logs were buried to a depth of 1250 mm.

The service life of the foundation is about 40 years. But technology is developing, and today screw piles are used, which are made of steel. And the service life of such a foundation is about 100 years.

Begin the installation of supports from the corners of the foundation. With a pile length of 2-2.5 m, it is installed instead of mounting, a metal rod is inserted into a special technological hole, and they begin to screw it up to a predetermined level, in the process I constantly control the vertical, using a plumb line and a building level.

With a pile length of 2-4 m, levers 3 m long are used for screwing. As mentioned above, 3-4 people will be required to build a screw pile foundation with their own hands. Permissible vertical deflection angle up to 2 degrees.

After the last pile is loaded, cut to one level. To do this, it is better to use a rangefinder or a water level. For trimming use a grinder.

After everything is cut off, it is required to concrete the cavity of the piles. This is done in order to displace the air and prevent the corrosion process. The solution can be ordered ready-made or prepared independently in a concrete mixer or trough using a cement-sand mixture.

When the concrete is dry, weld the heads

caps- these are special metal platforms designed to fix the strapping from a bar or channel.

Be sure to clean all the seams and process all metal elements located above ground level with a special anti-corrosion mastic.

We assemble the grillage

- this is a grid.

This foundation, on which the structure is being built, is made of beams, channels, slabs connected to the heads of the pile foundation.

For heavy buildings with a heavy load, it is necessary to use channels or slabs, which leads to a rise in price.

For light structures, a bar is enough.

Everything, the foundation is ready, you can start building a house.

If desired, the basement of the house on stilts can be finished with decorative siding, wood.

The main thing is to leave a gap between the house and the siding.

Conclusion

From all of the above, we can conclude that frame and wooden houses are ideal for foundations on piles.

Foundation on piles suitable for construction