Build a house on stilts from timber. Construction of a house from timber on screw piles. Construction of a screw base for a timber house

What was done

Project: the Innsbruck project was adapted to the site and the wishes of the Customer's family, and a solution was proposed to move the terrace.
foundation: based on geology and the architect’s calculations, the house was built on a pile-grill foundation.
ceilings: basement - reinforced concrete monolithic; interfloor - reinforced concrete floor slabs.
box: walls made of aerated concrete blocks, masonry with masonry glue. Windows are made to order, with one-sided lamination, installation on site.
roof: metal tiles.
external finishing: the walls are insulated with basalt facade insulation and plastered, finishing elements are made of wood, manufactured locally, based on technical specifications visualization, painted. The base is lined with decorative stone.
interior finishing: finishing was carried out according to the design project, where the combination of decorative plaster with stone and wood was taken as the basis. False beams were installed on the ceilings.
additionally: a fireplace has been installed and finished.



What was done

This is the very case when our Customer and we speak the same language and are inspired by the ECO high-tech style! Designer Ilya came to us with a ready-made Project for his future home! Our team liked the project - after all, such unusual and stylish solutions are always a professional challenge!
We prepared estimates for Ilya and developed unique design solutions - all this allowed us to implement this project! The frame house is made using our proven Canadian technology with 200 mm insulation along the entire contour! The outside of the house is sheathed with imitation timber. All windows are custom-made and laminated in colors according to the project. Additional accents are placed thanks to professional painting of imitation timber and selection of paints.



What was done

What does it cost us to build a house? Indeed, having a team of professionals and knowledge, building a house from scratch is a matter of time! But sometimes the task is more difficult! We have introductory ones - an existing foundation, or buildings on the site, extensions to existing buildings and much more! For the Matsuev family, this was precisely the difficult task. They had a foundation from an old burnt house, and a landscaped area around it! The new house had to be built in a short time on the existing foundation. Dmitry and his family had a desire to build a new house in the high-tech style. After careful measurements, a design was made that took into account the old layout, but had a new modern form with interesting innovations! The house now has an entrance lobby where you can sit at a table on cozy evenings and a complex but possible in our area exploitable roof. To implement such a roof, we called upon our knowledge and modern building materials, LVL beams, fused roofing and much more. Now in the summer you can have an unusual dinner on such a roof or watch the stars at night! In the decoration, our architect also emphasized the minimalistic and graphic high-tech style. Smooth plastered walls with painted plank details, and wooden beams at the entrance added personality. The inside of the house is decorated with imitation timber, which is painted in different colors depending on the purpose of the room! Large windows in the living room kitchen overlooking the site created the desired effect of illumination and airiness of the space! The house of the Matsuev family has graced our photo gallery in the section of country architecture in the high-tech style, the style chosen by brave Customers with excellent taste.



What was done

Olga and her family have long dreamed of a country house! A reliable, solid home for living that will fit perfectly into their difficult narrow plot! With the advent of children, it was decided to make the dream come true; children grow up quickly and in their own home in nature there are many opportunities and fresh air. We, in turn, were glad to work on an individual project for a house in a classic style made of red brick with a bay window! After the first acquaintance with our company in a cozy office, we invited Olga to take a look at our existing construction site: evaluate the order and construction processes, storage of materials on site, get acquainted with the construction team, and make sure the quality of the work. After visiting the site, Olga decided to work with us! And we were glad to do our favorite job again to make another country dream come true!



What was done

Project: changes were made to the San Rafael project and redevelopment was made according to the wishes of the Customer.
floors: basement - reinforced concrete floor slabs; interfloor - reinforced concrete floor slabs
box: walls made of expanded clay concrete blocks, masonry with mortar??? Windows have been installed.
roof: metal tile
terrace: rough fencing elements have been completed, flooring has been installed.



What was done

Dmitry contacted our company with an interesting preliminary design to calculate the cost. Our experience allows us to perform such calculations based on preliminary designs with minimal errors, no more than 2%. Having visited our construction sites and received the cost of construction, Dmitry chose us from many of our colleagues in the workshop to complete the project. Our team began to carry out a complex and expressive country project with spacious premises and a garage, large windows and complex architecture. After the project was completed, Dmitry chose us as a contractor company, and we, in turn, wanted to do further work at the same high level! Since the object is large, Dmitry proposed stage-by-stage cooperation, namely, upon successful completion of the foundation work, we began the second part of the project - walls + floors + roofing. Also, the exact timing of construction was important to Dmitry; in order to speed up the construction processes, the team was reinforced by 2 experienced masons.
The box on a pile-grillage foundation was delivered right on time! The result pleased us and the Customer. All stages of the work were coordinated and worked out for Dmitry and his individual project, which benefited all participants in the process!



What was done

Project: The project of our company Inkerman was changed taking into account the wishes of the Customer’s family, the house was planted on the site, taking into account the existing situation on the site and the relief
foundation: based on geology and the architect’s calculations, the house was built on a reinforced pile-grill foundation.
ceilings: wooden on wooden beams, in places of large spans installation of LVL beams. The basement floor is insulated with 200mm basalt insulation; interfloor ceiling with 150mm sound insulation.
box: box: walls made of expanded clay concrete blocks, masonry with mortar. Windows have been installed.
roofing: installation of metal tiles.
external finishing: the facade is insulated with 100 mm basalt facade slabs, the facades are covered with facing bricks; the color scheme was proposed by the architect and agreed with the Customer.



What was done

The Krutov family decided to build a spacious house for the whole family to live in!
Olga and other family members went from idea to implementation in several stages! Choosing a technology, working on a project for a long time, building a foundation, building a house with exterior finishing and then working on interior decoration! Frame technology was chosen as energy-saving, prefabricated and high-tech! Why did the Krutovs choose our company? They were pleased with the quality of work on our construction site and the workers who gave us a detailed tour! We also spent a long time working on the estimate, combining different finishing options and comparing their costs. This made it possible to choose the best option from a wide variety of finishing materials and configurations.
The project was created by an architect friend, but we had to work out the constructive part of it. After which the most reliable and effective foundation was erected - USHP. Next, work began on the box. A frame house with 200 mm insulation along the entire contour and a unique roof insulation technology of 300 mm. For the exterior decoration, siding was chosen in a spectacular combination of colors - coffee and cream. Accents are placed thanks to powerful roof overhangs, an interfloor belt and large windows!



What was done

When you decide to become the happy owner of your own home and move to a new home for permanent residence, first of all you think about what the house will be like; what to build it from; how much will it cost and most importantly, WHO will do all this?
Alexander came to our company with the desire to move to his own country house. He liked the Avignon project and there was already a strip foundation on the site. After the initial visit to the site, measurements and inspection of the foundation, we gave our conclusions and recommendations. Strengthen the foundation, change the project and adapt it to the size of the existing foundation! After agreeing on the cost, it was decided to build in winter. Alexander received a gift of reinforced concrete floors, one of the leading construction teams and a house according to the design he liked, which stood on a plot with exterior finishing by spring! Alexander observed every stage of construction, regularly visiting the construction site and was pleased with the result, and we were pleased with our work. This is an individually designed Avignon project, implemented in stone technology with external insulation and siding finishing!



What was done

Each house is a separate story of creation and implementation! One day we built a house for good people and they recommended us to another good person! Andrey Rumyantsev came to our company with the desire to build a one-story spacious country house with a fireplace for warm family evenings on the site of an old country house... It was decided to build the house from aerated concrete blocks so that the future handsome country man would delight the owner for decades! The customer voiced his wishes for finishing - and we, in turn, brought everything to life. Thanks to detailed visualization of the project, each element of the exterior decoration is a member of a friendly ensemble! Bavarian masonry, as the final stage of exterior decoration, looks noble and thorough. Without a doubt, such a tandem - aerated concrete and brick - can easily be called the best solution in the field of stone housing construction - warm, affordable, beautiful, reliable. Modern technologies have advanced so much that such unique configurations become available in a short time, because we built this project over the winter months. The main thing is to have the necessary knowledge and constantly replenish it!



What was done

Project: the project of a European company was taken as a basis and was adapted to the site and the wishes of the Customer’s family; a terrace and patio were proposed, taking into account the cardinal directions on the Customer’s site.
foundation: based on geology and the architect’s calculations, the house was built on a pile-and-grid foundation.
ceilings: basement - reinforced concrete monolithic; interfloor - wooden on beams with a 150 mm sound insulation device.
box: walls made of aerated concrete blocks, masonry with masonry glue. Windows are made to order with one-sided lamination, installation on site.
roof: metal tiles.
Exterior finishing: the walls are insulated with basalt facade insulation and plastered. Based on the visualization, facade panels under the Tolento stone were added. The enclosing elements of the terrace and balcony are made of wood, made locally, based on technical specifications visualization, and painted. The roof overhangs are lined with soffits matching the color of the roof.



Vladimir Murashkin, The owner of a house “brought to life according to his idea and sketch!” House parameters:

What was done

When Customers come to us with bright, modern ideas for their future home, we become doubly excited! After all, working on a new stylish project is always interesting and a challenge, how to implement all the bold ideas from a constructive point of view, what materials to use? Vladimir bought a plot of land with picturesque views of the Oka bank! This view could not be ignored, so a dizzying terrace (51.1 m2) and a large balcony, oriented towards beauty, became an indispensable attribute of the future house! Vladimir wanted to relax in nature in a wooden house, but it was necessary to build a house in a short time, and frame construction technology became the ideal solution for such problems! If we’re going to be different, it’s in everything! The house was made even more spectacular by the vertical finishing of imitation timber made of durable larch, painted in natural shades with emphasized wood texture. Laminated windows complement the modern look of the house! It turned out to be an excellent country house, with highlights and at the same time incredibly functional.

It all started with an individual project found by the Customer’s family on a European website. It was with him that she came to our office for the first time. We made preliminary calculations for the project, took a tour of the existing construction site, shook hands and work began to boil! The architect improved and adapted the project to the site and the Client’s family; the foreman “planted” the house on the site. Based on geological surveys, it was decided to place the house on bored piles. The frame grew in a few weeks, then the roofing, insulation, exterior finishing! Over the winter, a house grew on the site. The customer invited a third-party technical supervisor who monitored the process independently of our multi-stage control. The color scheme for painting the imitation timber was selected by our manager and here in front of us is the bright and cozy country house of the Pushkov family’s dreams!

Good afternoon, forum members.

I've been reading the forum for a long time and I really like it. I was afraid to write so as not to end up in a puddle. But I feel like I’ll have to sit down because I can’t really figure it out myself. I’m not a builder and I’m so far from it that it’s hard for me, and my hands are in the wrong place. But, I like to understand the issue.

A few years ago I decided to master the countryside; my first savings were enough for walls made of profiled timber under a roof on stilts.

Foundation type: Foundation – pile-screw.
Wall material(natural humidity): profiled timber with a section of 140 x 140 mm. straight with chamfers. Jute is laid between the beams (inter-crown sealant)
Partitions - profiled timber 90 x 140 mm.
Power structures:
Double strapping is made from timber 150 x 150 mm. Treating the strapping with an antiseptic.
Joists and floors made from timber 150 x 100 mm. with a pitch of at least 580 mm.
Rafters made from timber 50 x 100 mm. and 50 x 150 mm. with a step of no more than 1000 mm.
Building material with natural moisture.
Subfloor made from edged boards 20 mm thick.
Roof: roofing - metal tiles
Vapor barrier
The height of the ridge is 3.5 m from the interfloor ceiling, the roof is gable with a cuckoo, a terrace, a workshop and a furnace under a separate roof.
The gables are profiled timber 140 x 140 mm.
Lathing: solid from edged boards 20mm thick.
Window openings with dressing.
Assembling in the corners - in a warm corner.
Doorways with dressing.
Insulation: No
Waterproofing - isospan
Interior finishing:
Batten- No.
First floor ceiling height: 2.70 m. 20 rows of timber 140 x 140 mm.
One and a half floor - 9 rows of timber 140 x 140 mm
The frame-panel attic is not insulated; the partitions in the attic are framed and not covered with clapboard. The ceiling height in the attic is 2.4 m. The ceiling is not covered with clapboard.
The roof overhang is lined with clapboard - 16 x 88mm (natural humidity)
Stairs - no.
The terrace is open. Posts 140 x 90 mm.

Now the question arises about interior decoration and insulation.

I’d like to ask for advice on insulation (mineral wool or stone wool) since I’m at a complete loss.

Roof - if I understood correctly from the forum, I can make the maximum width of the rafters 150.
External walls - maximum 100 due to the overhang of the roof (the house is for siding) why do I want 100 and not 50 - in winter the frosts are down to minus 45 and the place is windy.

Floors are my main pain; at that time, I didn’t understand much at all, and I trusted the builders about what I wish - I have 150x100 joists, which means that I can make the maximum insulation 150. Taking into account the piles, I think that the floors will be cold, but mine small children and we love to play on the floor.
I want to make floors, gas is connected to the house, at first I wanted to make a circuit, but from the forum I realized that then I would have to make a self-leveling floor. But this is not possible, because such a load on the logs was not intended to such an extent

Now I’m racking my brains about how else I can make heated floors and whether it’s possible to do this without pouring, preferably not electric ones.

And the second thing is the soundproofing with it, I’m generally confused about how to install it and how much.

I read the forum and couldn't find any information.

I will be very grateful for your advice.

A house made of timber on screw piles is easy to build with your own hands if you have some construction skills. The screw rod support base is installed by hand and only requires 3 people to complete the job.

Wood is the most affordable material for the construction of environmentally friendly housing, so in this article we will consider a detailed technology for constructing houses from timber on screw piles.

Screw supports

It is customary to erect a screw foundation for low-rise buildings in areas with complex terrain, with deep freezing of the soil in winter, and when water-filled and heaving soils occur on the building site.

There are two types of screw piles, which differ in some design features:

1. The first type of screw pile is made of a hollow metal pipe with lugs in the upper part of the rod, into which a special device is fixed for screwing pile supports into the ground. The lower part of the screw pile is sharpened, metal blades are welded to the rod, which prevent the supports from being pulled out of the ground. The ratio of the diameter of the pile body to the diameter of its blade should not be 1/3. The maximum length of the rod is 2.5 m, but if necessary, the screw supports can be extended to the required length.
2. The second type of screw supports consists of a hollow composite rod consisting of a cylindrical and a conical part. The outer surface of the conical part has a thread made of steel strip.

There are several types of screw piles with different blade designs:

• Narrow blade supports are a highly pointed rod with several turns on a molded tip (reminiscent of a machine screw). In rocky and dense soil foundations, you should choose the option of a screw support with a sharp tip; in frozen soils, use the option with a toothed crown on the tip.
• Wide-blade supports - one blade is welded at the bottom of the screw rod.
• Multi-blade supports - equipped with several blades for better stability and compensation of vertical movements of the foundation soil.

Construction of a screw base for a timber house

Before laying piles, the site must be cleared

The construction of houses made of timber on screw piles begins with a set of preparatory work. First, the construction area should be cleared of household and construction debris, old stumps should be uprooted, and interfering green spaces should be removed.

Deep holes and potholes must be filled with soil and the area must be leveled.

With the help of pegs, they mark out the future foundation in the building area, and be sure to mark not only the installation sites for screw supports around the perimeter, but also the places for screwing in pile supports under the internal walls.

In the place where the rod is installed, it is necessary to dig small recesses (holes), this will greatly facilitate the installation of piles strictly along the center mark, and will also help maintain the vertical installation of the rack. To learn about why screw piles are bad, watch this video:

The foundation for a house made of timber from screw supports is erected manually, which requires the help of 3 workers. During the screwing process, a special device is inserted into the upper eyelet, which is physically exerted by two people, turning it clockwise.

With each revolution, the blades plunge deeper into the continental soil, plunging the pile support to a certain level. The third worker monitors the vertical position of the rod, checking it with a level.

If the pile deviates from the required position during screwing, it can be unscrewed back and the immersion can be carried out again.

Upon completion of the installation of the rods, the upper parts of the piles are trimmed to the same level. A liquid concrete solution is poured inside the cavity, which, after hardening, will weigh down the pile and help its stability in moving (heaving) soil. After pouring the concrete solution, steel caps are welded to the upper end of each pile. For more information about installing screw piles, watch this video:

House made of timber

The walls of houses made of wooden beams on pile-screw foundations begin to be erected after the installation of the caps on the pile supports is completed. There is an opinion that tying a pile field with a grillage when building small-area timber houses is not necessary.

The rigidity of the structure will be provided by the first crown beam, which is simply laid along the ends without fastening. 2 layers of roofing material are laid on top of the beam, after which the walls of the residential building are erected. The crown beam is loaded by the weight of the wall structure made of heavy timber.

The second option involves installing a grillage made of a metal profile. The channel is laid along the pile heads with the shelves down, then 2 layers of roofing material are laid, along which the first crown beam is laid.

Fix the beam to the profile using galvanized bolts. After laying the crown, you can continue laying the timber for the construction of the outer walls of the house.

Houses on stilts have a particularly unprotected place - the wind “walks” between the supports, and precipitation gets there. The floors of the building quickly dry out; cold air in winter quickly cools unprotected structures.

To protect against adverse conditions, it is necessary to protect the foundation on screw piles by installing a siding fence.

Siding sheets are installed around the perimeter of a residential building at the level of open pile supports, which will reduce the negative impact of adverse factors on the structure of the pile foundation.

Despite the development of construction technologies, including the creation of new modern building materials, many developers prefer good old wooden buildings. Houses made of logs and beams are as popular as they were a hundred or two hundred years ago, especially since their modern analogues have stepped significantly forward compared to traditional peasant huts. Technologies for constructing foundations for houses made of timber are also developing. The best option is a foundation on screw piles.

1. Features of the design of houses made of timber

Log houses, in particular log houses, along with stone houses, have served as the first buildings for human habitation since time immemorial. We can say that the technology of buildings made of logs has not changed much since then, except that today progressive construction technologies from laminated veneer lumber are successfully used, the possibility of high-quality rounding of logs has appeared, house designs have become more complex, and the houses themselves look very attractive thanks to modern designs for their construction. Compared to other building materials, wood has a number of properties that determine its use for the construction of residential buildings for any purpose:

• Environmental friendliness
• Good thermal insulation
• Processability

As for the massiveness of houses, this parameter is in the middle between heavy stone or brick houses, cinder block houses and light frame buildings. As a rule, the weight of houses made of timber is comparable to buildings made of foam concrete and aerated blocks. This is due to the porous structure of wood, similar to the structure of foamed building materials.

The relatively simple technology of constructing timber houses also plays a role: its walls are erected from a series of logs, the so-called crowns, along the perimeter of the building, including internal walls and partitions. Building a log "box" does not require significant concrete or bracing work. It is not without reason that the architects of antiquity could build huge towers using only an ax.

As for the foundation for timber houses, they used to be built from the hardest wood. Since then, foundation laying technology has come a long way. The main requirement for the base of the house is to hold it securely on the ground, so that distortions do not occur during operation - this is especially important for wooden houses, because their structure consists of interconnected elements.

As was said, the weight of houses made of timber is inferior, with equal parameters, to the weight of stone and brick houses. Consequently, the foundation for timber houses may not be as strong, which generally reduces the cost of construction.

2. Advantages of a pile-screw foundation for a house made of timber

Traditionally, several types of foundations are used for log houses:

• Slab
• Tape
• Columnar

It should be noted that the creation of monolithic foundations for any structure is associated with some difficulties:

1. High labor intensity
2. Cost
3. Long commissioning times
4. Instability on soft soils, waterlogged and heaving soils

In recent decades, the technology of laying foundations on screw piles has been rapidly developing. It is the pile-screw foundations that are free from these disadvantages, and their use as foundations for timber buildings has a number of advantages over traditional types of foundations:

• Saving money
• Speed ​​of construction
• Lack of excavation work associated with the loss of soil useful for agriculture
• Possibility of construction on “problematic” soils
• All-season work
• Ease of installing communications into the house compared to other types of foundations
• Ease of construction
• Lack of special preparation of the site for the foundation
• Laying in areas with elevation changes
• Possibility of construction in densely built-up areas

3. Features of laying a pile-screw foundation for a house made of timber

What additional requirements may arise for a foundation on screw piles for a house made of timber compared to those for the construction of other types of structures? Obviously, they can be associated with the design features of the timber buildings themselves.

Unlike frame houses, walls are erected from monolithic elements - logs laid horizontally to the surface of the earth. Thus, the weight of the roof is transferred to individual logs, and then from the upper logs to the lower ones. Thus, the main weight load is distributed evenly along the entire length of the lower crown. In frame houses, the main loads fall on the racks, that is, they act pointwise along the wall.

Unlike brick and block houses, a wall made of timber is not monolithic and the loads on the lower beams are not so evenly distributed along the entire perimeter of the house.

This is due to the fact that the weight of each log in some part of it may differ from the average - this is due to unevenness in the density of the wood used, deviations in its thickness, etc.

If for a frame house it is necessary to tie the foundation on supports, and monolithic houses are placed directly on a monolithic foundation, then in houses made of timber the lower crown itself can serve as a foundation tie.

Thus, the main feature of constructing a foundation on screw piles is the possibility of laying the lower crown directly on the piles. However, the lower rims of different walls are at different levels - two perpendicular rows are laid on two rows of logs. Consequently, only two of the four lower logs of the crowns are laid directly on the pile heads. Accordingly, the other two logs should lie on the harness.

But the installation of logs on piles must be based on flat areas - this adds requirements for the mandatory equipment of the ends of the piles with special caps.

Another requirement for a foundation on screw piles is its sufficient load-bearing capacity. Although the weight of timber houses is inferior to the weight of their brick counterparts, it is, as a rule, quite large compared to the weight of frame structures. This predetermines the use in this case of screw piles with increased dimensions, as well as with a greater depth of their screwing.

4. Installation of a pile-screw foundation under a timber house

In general, the construction of foundations on screw piles for houses made of timber is not fundamentally different from laying foundations for frame houses. First of all, it is necessary to make a calculation of its load-bearing capacity - this will determine which piles can be used, what the step of their installation will be, and to what depth they will need to be screwed.

The dimensions of the house and the financial capabilities of the owner determine the use of heavy equipment or manual labor to lay the foundation.

Standard houses made of timber for permanent residence are usually placed on screw piles with a diameter of 108 cm, with a pipe wall of at least 4-5 mm. Accordingly, the blades generally have a width of at least 25-30 cm, and the depth of screwing in the piles depends on the existing soil properties and is usually 2-2.5 meters. Thus, the use of 3-meter piles with a diameter of 108 mm is considered optimal.

If a lighter structure is being built from logs, for example, a small bathhouse or gazebo, then, accordingly, the diameter of the piles can be reduced, as well as their depth.

The progress of foundation construction in the standard case consists of several main stages:

1. Calculation and planning
2. Preparing the site for the foundation
3. Drilling pits to facilitate screwing in piles
4. Screwing piles
5. Trimming piles to level
6. Concreting piles
7. Creating a harness

5. Tying the pile-screw foundation under the timber

As we mentioned above, structurally the lower crown can serve as a framework for the foundation. If you use timber with a rectangular cross-section, it is enough to screw the lower beams to the pile heads. Some difficulties arise with the use of cylindrical logs - after all, they must fit snugly to the base.

In this case, builders use a number of techniques.

• Firstly, for additional rigidity of the foundation, screw piles are equipped with a grillage of metal beams or channels welded to the body of the piles.
• Secondly, only the two lower parallel logs are placed on the pile heads. Perpendicular logs can be laid on additional lower beams that are not connected to the log house

6. Conclusion

Installing a foundation on screw piles is the best option for laying the foundation for houses made of timber, even houses for permanent residence that have large dimensions. For such foundations, it is better to use the services of specialists - they will be able to correctly assess the properties of the soil, calculate the parameters of the foundation and carry out high-quality installation of screw piles. If a small building is being erected, especially in the cramped conditions of an already built-up area, then it is quite possible to use the manual method of installing screw piles and do it yourself.

Designing houses made of timber is faced with the choice of foundation. Due to the light weight of the structure, the construction of houses made of lumber can be carried out on a lightweight shallow or pile foundation. The foundation is easily and simply erected on soils of varying bearing capacity and does not require increased installation costs.

Design and implementation of the plan

The basis of any construction work is a project carefully drawn up taking into account all requirements and regulations. If the documentation is verified, the construction of a house will turn into a structural assembly of elements, to which detailed instructions are attached.

• Minimum financial costs;
• Almost complete absence of land work, due to the needlessness of leveling the landscape and removing stumps, boulders, and slopes;
• Possibility of arrangement on all soils, except heavy rocky ones;
• Facilitated methods of carrying out utilities and pipelines;
• All-season base construction;
• A house made of timber on screw piles can be erected even in densely built-up conditions.

The screw pile type foundation is not much inferior in terms of the quality of load resistance to more expensive and conventional foundations. Moreover, it is the pile-bearing foundation that will ensure the integrity of the structure during operation during periods of seasonal ground movements, and also allows you to increase the usable area of ​​the house at any time without significant investments.

Construction of the foundation: basic requirements and parameters

After carrying out geological work and confirming the chosen option for the pile foundation, it is necessary to take into account the type of support; it is better to take the values ​​​​given in the table below as the standard (length values ​​​​are given in cm):

In addition to the bearing capacity of the soil, it is necessary to calculate the weight load (total mass) of the structure, for which the following values ​​are taken into account:

• Number of floors of the building;
• The material from which load-bearing and intermediate walls are made;
• The presence of local massive structures (swimming pools, fireplaces, stoves, etc.);
• Material of interfloor ceilings.

The weight load is calculated down to the proposed furniture, if you plan to install impressive sets or other household items. Then you should look at the table given as an example (the calculation is given for a one-story residential building measuring 10*10 m without additional weighting factors):

The total area of ​​the foundation is also taken into account. The dependence of the number of piles on the size of the foundation is great, for example, for a 3 * 3 country house building you will need only 4 pile elements with a diameter of 89 mm, for a 8 * 8 structure there are already 16 piles with a diameter of 89 mm, and for a house 10 * 10 m 25 screw piles with a diameter of 108 mm .

Note that the size range of pile elements is much wider, so they can be easily selected for each individual type of development. Regardless of the choice of diameter, it is necessary to monitor the strength and practicality of the piles. Developers most often use welded galvanized or cast piles with tips. Galvanized coating prevents the development of corrosion, and with high-quality coating application, additional waterproofing procedures may not be necessary.

As for the stage of work, before arranging a house made of timber on screw piles, the following procedure for constructing the foundation is assumed:

1. Prepare the installation site, mark the site;
2. Drill small holes for installing piles, determining the points according to the design documentation (do not forget that the foundation is made both under load-bearing walls and under interior partitions);
3. Be sure to make support points under local massive objects and elements.

And now the question: the distance between the screw piles, what should it be? Experienced developers recommend placing screw supports for a frame house in increments of no more than 3 meters. But if necessary, for a timber house with a large mass or if there is a sufficient number of load-bearing internal foundations, the gap between the piles can be reduced to 1-1.2 meters (no less). The main thing is that the pile-screw foundation does not represent a palisade of supports: such a structure will not have greater strength and stability, but it can disrupt the integrity of the soil and lose all its positive qualities.

Types of pile foundation piping

After the screw piles are placed, the top of the elements is leveled and an I-beam or channel can be welded along the outer perimeter. In this case, the structure becomes stronger. After which you can begin building the box and arranging the roof. However, there are still options for tying the above-ground parts of the foundation, selected taking into account the future structure:

1. Wooden beam piles require caps on top of which a subfloor can be made. The piping must be treated with bitumen mastic to improve its waterproofing qualities.
2. The channel or I-beam mentioned above is a strapping to give rigidity to the entire structure. This type is required for massive buildings, as well as for houses built on flooded soils or on soils with the threat of erosion. Channel size: for piles with a diameter of 108 mm, the width of the material is taken from 140 mm.
3. A grillage made of reinforced concrete resembles a strip foundation reinforced with pile elements. To create it, the piles are screwed in, as shown in the project, then the reinforcement frame is welded, the formwork is made and the concrete solution is poured. The grillage is used only for impressive buildings.
4. If the house is very heavy, it is better to pour a slab base onto piles. To do this, it is necessary to evenly position the reinforcement cage, securing it to the screw elements, then pour the concrete mixture into the pre-prepared formwork.

A house made of timber on a pile foundation is an ideal option for a developer who wants to save money and get practical housing that will last a long time. By choosing the right and strong screw piles, making an accurate calculation of the distance between the piles, it is possible to erect a building on soils of weak bearing capacity and with high water content. In this case, the relief, building density, groundwater level and other nuances necessary to comply with if a house is being built on any other foundation do not matter.