Connections of crowns in a wooden house made of a log house and cross-cuts in a log house close-up.

Often, already in the first year of their operation, owners of log houses are faced with the fact that the logs are twisted, the walls are warped, and there is blowing, as they say, from everywhere. And the reason for all these problems is essentially the same - non-compliance with the technology for assembling the log house

The conclusion is obvious - build according to the rules, and if we are talking about a finished house - conduct a thorough diagnosis (if necessary, with the involvement of construction experts) and eliminate the identified violations before they lead to more serious consequences.

15 mistakes in assembling log cabins.

Cuttings in log houses made of timber and timber

Natural wood is one of the popular materials for the construction of country and country houses, bathhouses, and utility buildings. This is explained by the attractive price-quality ratio of timber and logs, and the ability to order a kit completely ready for assembly.

Modern technologies make it possible to spend a minimum of time and physical effort on connecting elements when building a wooden house, since all the necessary cutouts in the log elements can be made using high-precision equipment. But having skills in woodworking, in order to save money, you can perform the entire complex of work yourself manually.

# How much does it cost to build a house made of logs with a metal roof

Here are the expenses we incurred during the construction of this house:

• Log house 4.3*6.5 height 2.3 - 75,000 rub. with delivery;
• Assembling a log house with a manipulator - 30,000 rubles;
• Board 50*200*6000 for the floor of the first floor - 19 pcs. (1.14 m³) 19,600 rub.;
• Board 50*200*6000 for the floor of the second floor - 24 pcs. (1.44 m³) RUB 21,600;
• Board 25*100*6000 for lathing - 35 pcs. (0.525 m³) 5,250 rub.;
• Board 50*150*6000 for rafters - 10 pcs. RUB 6,530;
• OSB sheets 1250*2500 thickness 9 mm - 5 pcs. 9,000 rub.;
• Tow 10 kg No. 4 - 6 bags 4,800 rub.;
• Ruberoid RKP-350 15 m in a roll "TechnoNIKOL" GOST - 1,090 rubles;
• Senezh OGNEBIO 10 kg - 4 cans 4,000 rub.;
• Corrugated sheeting + all additional elements - 60,000 rubles;
• Self-tapping screws, plates, angles, studs, other expenses + delivery of all materials - 10,000 rubles.

Cutting function

Log houses made of timber and logs are built according to certain principles, the violation of which results in serious problems during the operation of the building. Errors in design and non-compliance with installation technology provoke:

• deformation of walls (bend outward or inward);
• formation of gaps between the crowns;
• freezing of corners, etc.

At the design stage, the location of the internal walls of the building should be determined. This is especially important if we are talking about a house with a large area of ​​the lower floor, since the rigidity and reliability of the building depends on the number and location of the internal walls.

Crosscuts in log houses are the places where internal walls intersect with external ones in houses made of timber and in log buildings. To ensure the rigidity of the structure, the cuts are made symmetrical on opposite sides - each wall must intersect the frame. Accordingly, this is taken into account when designing the number and size of rooms in the house.

The cut also has another function - it serves as a junction point for the elements from which the crown is mounted if their length is insufficient. You cannot join a beam or log without cutting it - this reduces the load-bearing properties of the wall, and such a joint deforms under loads, losing its tightness. In addition, the cut disguises the metal staples that need to be used to tighten the joining logs of the crown.

If the length of the house wall exceeds 6 meters, you cannot do without cutting. When constructing a log house from timber, this is due to the standard length of the material - it is six meters. The rounded log is also standardized.

When planning to build a house from chopped logs, it makes no sense to include in the project the use of logs over 6 meters in length. Without cutting, such a wall will not withstand the loads from the roof and ceilings of the attic, attic or second floor. In addition, delivery, processing and installation of such logs is a labor-intensive and financially expensive project. Difficulties in construction will be added by the large difference in diameters between the butt and the top part of the log.

Joint crosscuts on long walls are not necessarily part of the inner wall - such crosscuts can be assembled from short pieces of logs. They not only perform a docking function, but also serve as an additional decorative decoration. They are often called false cutters.

Is it advisable to build a log house?

There are several reasons why people decide to build and live in a log home. And these reasons do not apply to a forced situation, because the construction of a log house is a rather labor-intensive process.

As a rule, people are guided by the following motives:

• the log house is environmentally friendly, the room has a pleasant aroma of pine forest;
• it is almost always a country house, away from the city, in the fresh air;
• aesthetic appeal, the log house looks very different from the brick structure;
• If the technology is followed correctly, then the construction of a log house is faster and easier than using stone materials.

When planning to build a log house, the developer is aware of the need to take care of the wooden house so that it does not rot or burn. If these factors and constant work to maintain the house do not frighten him, then a log house would be a viable solution.

What can be built?

A log is not such a plastic material as brick; it is impossible to build a semicircular house from it, for example. A structure is most stable when it is as complete as possible.

The more windows there are in a log house, the more unstable places where the log will be cut. Therefore, it is better to build square, austere houses from such material.

There are several options for log houses; it can be a one- or two-story building.
With attic and porch. Glazed and solid. On the site you can build a garage, a bathhouse, and a gazebo using logs. This whole composition will be combined with each other. Interior floors and attics are also made of wood .
The end result will be a warm, comfortable and beautiful country house. House made of chopped logs in the photo:

Installation principles

According to the principle of arrangement, the following types of cuttings are distinguished:

• through cutting through a wall with the formation of a residue (by analogy with cutting corners into a bowl);
• through cutting flush with the outer wall (cutting into the paw without protruding residue);
• insertion of an internal wall into an external one without cutting through.

For the construction of internal walls, logs of the same diameter are used as for external ones. Only in this case can a reliable cut be made, which will ensure the rigidity of the structure and prevent the corners in the rooms formed by installing the partition from freezing.

The principle of arranging the log house is chosen in accordance with the chosen technology for installing the corners of the log house so that the building looks harmonious - most often it is a Russian or Canadian bowl, dovetail, etc.

If there is no need to “decorate” beams or logs joined along their length, it is easier to make a non-through connection - in this case, there is less risk of the formation of cold bridges.

The construction of wooden buildings requires a thoughtful design, a careful approach to the choice of wood material and high quality workmanship at every stage.

Felling of log houses in a clapper with a cut

Unlike traditional chopping, this type of bowl has an improved design: an unselected quarter appears in the semicircular bowl, called a cut.

The undercut is usually located closer to the inside of the corner. To completely align the cut with the underlying crown, a quarter is cut out in the upper part of the log. After such geometric manipulations, the crown takes on a complex shape, so such cutting is rare and requires high skill as a hewer.

Thanks to the undercut, the corners of the building receive excellent protection from the wind and excellent strength properties.

Log house - what is it? Technology or design

March 2, 2022 log house, types of log houses, log house, log house, timber frame, gun carriage log house.
A log house is a wooden structure, the walls of which are assembled from logs or timber cut together. Depending on the complexity of the design, log houses are:

• Chetverik is a rectangular log house , the simplest design, which has another name - a cage.
• Shesterik is a hexagonal log house . It is used much less frequently in the construction of log houses. It is mainly used for the construction of towers that can experience wind loads from different directions. A more streamlined shape allows the construction of tall buildings that are resistant to strong gusts of wind.
• Octagon is an octagonal frame with an even more rounded shape. Used in cases similar to the six, but larger in size.

Depending on the design, a log house can be simple, that is, it has one external contour (four, six, eight), divided when there is an internal wall. An example of such a log house is a five-walled one, that is, there are 5 walls in the log house, but the fifth is made with a cut.

Log houses of complex design are a combination of several simple log houses, usually four-sided. In this case, it is more correct to call them a cage rather than a quadrangle.

A log house consists of several crowns (rows) of logs or beams. The differences lie in the cutting methods and the tools used for this.

Unity of log construction technology

Regardless of the type of material: log, carriage, timber - there are a number of general principles in log technology:

1. The log house consists of crowns.
2. The material in the crowns is connected by special “knots”.
3. The crowns are connected to each other under the influence of gravity, the connection density is ensured by the inter-crown groove.
4. The inter-crown groove and connecting nodes are laid with various types of insulation (moss, flax, wool) to fill possible voids and prevent the log house from blowing through. Due to its thermal properties, the insulation in the inter-crown grooves (the thinnest part in the log house) provides thermal resistance close to the thermal resistance in the thickest part of the log, and in cases with a carriage and beams, it is superior.
5. Logging technology requires shrinkage. Depending on the moisture content of the material and the speed of its drying, the time for shrinkage can vary greatly.

Materials for making a log house

Solid wood is used to make a log house. The main materials are logs, carriages and beams. Let's look at their types in more detail, but first a general feature: the drier the material for making a log house, the more accurate the fit in the nodes will be, which means less consumption on insulation and the warmer the log house.

Log for a log house

A log for a log house is used with various methods of external processing (barking). The oldest option is scraping, that is, manual removal of bark. A gentle processing option that preserves the densest outer layer, thanks to which the wood has minimal risks of cracking. The option of hydraulic pressure treatment is very similar to it.

A more “hard” option is to use mechanized tools (electric planer and debarker). In this case, partial damage or complete removal of the dense outer layers (cambium) is possible. For this reason, the risk of cracks increases.

The third option involves processing the log on a machine, resulting in a log with a regular round cross-sectional shape. Such a log is often considered a separate species and is called rounded (cylindrical). The machine removes not only the cambium, but also the dense upper layers of sapwood. For this reason, quite large cracks can form on a log house made of rounded logs.

In the production of log houses, log diameters of 16 (18) cm or more are used. For the central European part of Russia, the optimal option is a diameter of 34–40 cm. Most log processing machines are limited to 30–32 cm, that is, rounded logs are initially not suitable for the construction of wooden houses for permanent residence, but they make excellent houses for country holidays.

Types of corner joints in log walls

The basis of the construction of wooden walls are corner notches. There are two main types of corner joints - with rest/corners and without rest. In turn, each of these types of corner notches has various design options that differ in efficiency, detail and manufacturing complexity.

Connections with the remainder have characteristic log ends protruding at the corners. The size of the premises turns out to be somewhat smaller than the length of the logs themselves, but the design of the corner is strong and well protected from wind and precipitation.

Cuttings with remainder:

In oblo - the simplest method of cutting with the remainder, which is also called cutting into a bowl, it is also one of the most ancient in Russian wooden architecture. In the lower log, a longitudinal inter-crown groove and a semicircular cavity are selected - a bowl, into which the overlying transverse log is placed. Labor costs in this case are minimal, since all carpentry operations are carried out on top of the log and there is no need to turn it over. However, the performance qualities of such a connection are low. Firstly, the orientation of the bowl upward allows moisture to get inside the bowl, which leads to the insulation getting wet, the same applies to the groove between the logs. Secondly, the inner, flat surface of the bowl, without any transverse or locking elements, is easily blown out, especially after the logs shrink and dry out and requires caulking.

In the okhlop - it is also called the ohlupen or the Siberian bowl, is an inverted copy of the connection into the bowl - both the bowl and the inter-crown groove are located at the bottom of the upper log. This connection is more preferable because it is better protected from precipitation, but it is more labor-intensive to implement, since the log has to be turned over several times during the fitting process. In practice, chopping in the clap can also be called chopping in the clapper, therefore, when it comes to chopping in the claw, it is better to precisely discuss the details of the connection with the performers - the location of the bowls, grooves and other points.

Cutting into a bowl - into a clap or clap has an intermediate option, when a longitudinal groove and a bowl are cut down from opposite sides of the log. That is, the groove can be at the bottom, and the bowl is directed upward, or vice versa. In this case, it is better protected from precipitation, but the bowl is still directed upward and has a slightly different shape - a rounded protrusion appears in the middle of the bowl, repeating the radius of the longitudinal groove of the transverse log.

Fat tail chopping is an improved version of a simple bowl. It is a bowl, inside of which there is an additional spike, which is called the fat tail. A groove is selected from the opposite side of the log into which the tenon of the next log fits. This option is good because it provides additional strength and sealing of corners, since in this case there is no direct blowing. The orientation of the bowl when chopping into the fat tail can be either up or down. Fat tail chopping is technologically more complex than simple bowls, however, it is widespread nowadays due to its performance qualities. Currently, cutting into a fat tail can often be called cutting into a head with a spike or a cut, although in fact a cut with a cut is another type of joint, which is described below.

In a huff. When chopping into an okhryap, two identical notches are made on both sides of the log, both on the top and bottom. The shape of the recesses in this case is no longer round, but rectangular, with a flat bottom and slightly rounded sides, repeating the radius of the next log. Okhryap cutting is quite simple to manufacture, but is not recommended for permanent residences, since the connection is not tight enough. Historically, this type of felling was used for the construction of outbuildings.

Oblo - an oblo with a cut. In this cutting method, an unselected quarter remains inside the round bowl - cut. The bowl can be directed either up or down. On the opposite side of the log, a recess is selected in the shape of a notch. The cut in the bowl is arranged from the inner corner. A bowl with a cut turns out to be more durable and protected from through blowing, but is more labor-intensive to make, which is why it is quite rare.

Hook cutting. When starting to describe this connection, it should be noted that in specialized literature and in practice, two completely different corner notch designs can be called a hook connection. For this reason we will describe both. The first version of the hook design is a bowl, which is selected only to the middle of the log (on one side of the axis of the log). In the upper part of the log, a semicircular groove is selected along the unselected remainder of the bowl. Thanks to this joint configuration, the corner is completely closed from through blowing, unlike most other notches. Therefore, the hook connection is very warm and durable. At the same time, connecting into a hook is very labor-intensive.

The second option of hook cutting is noteworthy in that it involves chiseling the logs from the inside and obtaining a right angle with smooth internal walls. The design of this castle is partly similar to the bowl with a notch described above. The difference lies in the fact that the log is hewn from the inside by approximately a quarter of the diameter of the log, and the tenon-cut is made equal in length to the size of the hew. When assembling the lock, the tenon hooks onto the rough side of the log, giving the joint additional strength, which is how it gets its name - a hook.

Log houses made of timber for all-season living

Among compatriots who want to acquire a country house, interest in log houses is growing. That is why information about the advantages and disadvantages of such structures is periodically found in various specialized forums.

Let's try to understand what these construction projects are and what are the features of their construction.

Typical timber house

Problem 3: Drying at home

The problem is especially relevant when a wooden house is built from timber with natural moisture for shrinkage. While this shrinkage is taking place, the house must be properly dried. Otherwise, mold may grow in it, shrinkage will occur incorrectly and incompletely, and after moving in and the first heating season, the walls will begin to twist. This problem will entail the others described below.

Solution . To avoid these problems, there are two options. The first is to build from kiln-dried timber on a turnkey basis. The second is to properly dry the house in parallel with the process of the most intense shrinkage. To do this, it is not necessary to use any heating or air-injecting equipment. So, the savings from purchasing cheaper natural moisture timber will literally fly into the atmosphere. All you need to do is to ensure normal natural air circulation in all rooms.

Differences between a log house and a house

A log house is a building in the construction of which chopped (mechanically processed) wood is used. Until a certain time, the construction of such houses was carried out exclusively from logs, but today the range of building materials has expanded somewhat. Now, along with the rounded log, solid wood or glued profiled beams are used.

The question arises, what is the difference between cutting a log house from timber and building wooden houses and cottages, which are being built everywhere both in Western Europe and in the post-Soviet space?

There is a difference and it is significant: when ordering a turnkey house from a construction organization, you receive a property ready to move in with doors and windows already installed. In the case of log houses, everything is somewhat different; you get a wooden structure without insulation, without windows and doors. The point of manufacturing such semi-finished products is to protect against the consequences of shrinkage processes that can change the geometry of the construction project.

Thus, leaving a house made of timber without external and internal finishing for six months or a year, we get the opportunity to wait until the building takes its final shape and dimensions.

Log house in the process of shrinkage

Important: when ordering a log house, rather than a turnkey house, you trust specialists with the most difficult and important part of the work. At the same time, the trim and finishing can be done with your own hands, due to which the cost of the house is reduced by an average of 20%.

Preparing the site for the construction of a log house

Marking the area for foundation and building materials . Before importing building material and starting construction, it is necessary, according to the project, to determine and, if possible, somehow designate the place where the construction will take place directly on the territory of your land ownership.

Adjacent territory. In addition to the territory for the log house itself, it is necessary to allocate an additional area around it, which will be used for placing building materials, round timber, materials for the foundation and earthworks. It is recommended to carry out all this marking using a tape measure, having at least approximate information about the dimensions of the materials.

it is necessary to allocate space for storing material

Plan the area for approach and access to the construction site . For this purpose, it is necessary to take into account the dimensions of transport or any mechanism for moving materials, from a construction trolley to vehicles that will enter the site.

equipment access required

Cleaning and strengthening of the construction site . To make construction work easier, it is recommended to remove excess bushes and possibly trees. Level out obstructing hills and fill up existing holes so as not to create dangerous situations. The soil around the construction site must be strong and not collapse. There should be no dirt on the site even in damp and rainy weather. In the case of viscosity and excessive softness of the soil, it is necessary to strengthen its surface or with a special flooring made of boards, panels, crushed stone embankments and other materials. If a large, long-term construction is planned, it is recommended to temporarily strengthen the movement area around the object with old slabs, which can be removed after construction is completed.

Providing the necessary communications for work . The site must always have access to electricity, water and toilets. If the construction process involves temporary residence during construction, then it is necessary to provide places for preparing and eating food, and places for rest. If construction is carried out far from populated areas, then a construction trailer or cabin with all the necessary conditions is installed on a new, uninhabited land plot.

reinforced soil and a change house will create comfortable working conditions

Dry the area if necessary. If the site is located in a lowland and is prone to moisture accumulation after heavy rainfall, it is imperative to take measures for drainage and drying of the area. This need is especially relevant for a wooden house frame, since wood is especially sensitive to high humidity. Read more about the properties of wood in construction. This disadvantage of the land plot is solved by adding additional soil to raise the overall level of the house plot. Or you can create artificial drainage by breaking through small channels around the perimeter of the site, which will serve as drainage from the building.

artificial drainage will help dry the soil

These recommendations for preparing for construction, from strengthening the soil to installing a construction shed on the site, are very important!, since the quality of work performed at the site depends on the work conditions, both by you personally and by the people who will help you in construction, for hire.

Good preparation for the start of construction is the key to efficient, fast and high-quality work, because, even with unlimited funds for construction, poor preparation and illiterate organization of space can turn the construction of the smallest house into a problem.

Stage 4

Advantages and disadvantages of log houses

Advantages

• Attractive exterior aesthetics, regardless of the choice of building material;
• Reliability and durability, tested in real conditions (some log cabins have been in use for over a hundred years);
• Low thermal conductivity of walls and, as a result, energy efficiency of the room;
• A wide selection of wooden building materials and, as a result, great opportunities in design and construction;
• Less susceptibility of the construction site to foundation movements and seismic activity, compared to stone, brick or concrete buildings;
• Environmentally friendly wall material, which has a beneficial effect on the well-being of residents.
• Natural ventilation and humidity balance in the room, due to the fact that wood is a “breathable” building material.

Flaws

• The price of a log house made from high-quality lumber (for example, oak beams) can be expensive. It is no secret that a house built from wood harvested with violations of technology will not provide the required operational benefits. In addition, the cost of the finished building will be considerable due to the high wages of professional carpenters.
• The log house is demanding in terms of compliance with all stages of construction technology, starting with the procurement of materials and ending with commissioning.
• Taking into account the break for shrinkage, assembling a log house from timber requires a lot of time.
• Due to the permanent shrinkage process of the log house, increased demands are placed on the design and quality of construction. In addition, the finishing of the interior and exterior, in combination with the filling of window and door openings, must also be at the highest level.
• Log houses made of laminated veneer lumber or other lumber require constant maintenance.
• During the first year after the completion of the project, it is not recommended to immediately use heating, as this will lead to deformation of the walls.
• Advice: most of the listed shortcomings are compensated by the professionalism of the builders, who will not only cut down the building, but also select the material that is optimal in terms of technical characteristics.

Do you want everything ready?

Wanting to reduce the construction time of a house and bring the housewarming closer (and this can take place no earlier than one and a half to two years after the final assembly of the building), some are considering purchasing a ready-made log house. Is it worth doing?

First of all, it is unknown what quality of the project was used and whether it was used at all. In addition, many still want to “modernize” the log house for themselves, adding various extensions, balconies, etc. to it. In particular, this creates an increased load on the supporting structures; the junctions of new elements with log walls often become cold bridges, it is also possible emergence of other problems.

It is especially not recommended to purchase a log house that is offered to you as an already established one. Most likely, these are piles of logs that did not find their buyer in time, stacked in crowns on supports and stood there for a year or more without proper shelter. There is no need to explain what kind of house this material will make. Remember: the log house should only stand on its foundation and under a temporary roof.

Construction technology

The construction of log houses from timber is a long and technically complex process, but only if rounded logs are used as building material.

The situation is completely different if solid wood or laminated laminated timber 150x150 is used during construction. Such lumber is drier and lighter than logs, and therefore the shrinkage process is not so critical for the building and construction is carried out faster.

Timber that is easy to build with

The main construction tools used are:

• wood hacksaw;
• a circular saw;
• carpenter's axe;
• set of chisels;
• auger;
• electric drill with a set of wood drills;
• lace;
• measuring instruments, including level, plumb line and tape measure.

Project selection

After determining the material from which the house will be built, you can begin to select its design. You can design a small house yourself or find a free project on the Internet. But you shouldn’t experiment with the design of a two-story large house. It is better to purchase it from the appropriate organization, which will most likely help with obtaining a permit for its construction.

When independently designing a future home, it is necessary to take into account the maximum possible length of logs, which is 6 meters. The height of the future house is calculated based on the diameter of the logs, which is different for everyone, with the exception of the use of galvanized logs.

Consideration of the pros and cons

Each element has the shape of a parallelepiped, so after the construction of the structure the walls are flat, which greatly simplifies the finishing work. When using polished beams, facing activities are reduced only to surface treatment with paint and varnish products.

List of benefits

The low price of the base material makes it possible to construct not too expensive objects;

This is what a finished 7 by 7 m structure made of solid timber looks like.

Certain disadvantages

• Low resistance to biological factors without additional treatment with antiseptic compounds;
• Basic elements can change linear dimensions as a result of shrinkage, which leads to deformations;
• Fire safety is low, since wood ignites quite easily without the use of special means.

Note! To reduce the influence of negative factors, it is necessary to select a material with low humidity during the acquisition process, and during the work carry out treatment with protective agents.

Problem 5. Longitudinal cracks in timber

They appear due to the fact that the wood dries unevenly, and stress is created in it. When they reach their breaking point, cracks form. The wetter the timber was at the time of construction, the more cracks there will be. Much also depends on how well the log house was assembled, how it was dried and shrinked.

Solution . The first method is to cut compensation cuts along the lower or upper edges of the beam. As a result, after installing the frame, these cuts will not be visible from the outside. The stresses in the wood will not be so intense, and if cracks appear, they will appear primarily at the places where they were cut, where they are not visible. The second way to solve the problem with cracks is to seal them using putty, sealant and other means.

Types of elements used

Today, there are various types of log houses made of timber, since the construction process uses elements that differ not only in appearance, but also in their main characteristics. The choice should be made taking into account the operational features of the structure.

Regular products

In this case, the material has a rough surface and therefore requires additional finishing. The base is solid wood. The main advantage of such products is their relatively low cost.

The usual products for construction work are presented.

When laying, special attention must be paid to the thermal insulation of the seams between the crowns, since additional locks are not provided. The simplest option involves the use of tow, but if necessary, more effective materials can be used.

Profiled products

Products of this type have a perfectly smooth surface, so they do not require additional cladding after construction is completed. However, it is simply necessary to carry out treatment with protective and decorative compounds, otherwise the wood will quickly darken and begin to rot.

Window frame in a wooden house

The casing of any opening consists of three elements:

• Top – upper horizontal bar;

• Sidewalls - two vertical risers;

• Window sill board or threshold - bottom board.

The rough end involves installing only the casing, while the finishing end involves installing a box with slopes.

These elements are installed in the log house opening in three main ways.

Draft pigtail

The second name is “in a block”. One of the simplest and most cost-effective options that allows you to perform a rough design of the opening and protect it from deformation during shrinkage.

At the vertical ends, a gap is sawed into which the embedding block is installed. The box risers are already attached to this block. The sawn gap is treated with an antiseptic, all casing elements are laid with insulation. During installation, no rigid point fastening is used so that the box remains mobile and can walk vertically. Compensation gaps must be left.

Pit in the deck

The second name is U-shaped casing. When using this method, a tenon is formed in the vertical end parts of the opening, that is, the wood is carefully and accurately removed along the edges. A groove is cut out in the casing - a solid element made from a carriage. First, the window sill board is installed, then the risers, and the top is installed last.

One of the most complex and expensive options for decorating a window opening, but also the most aesthetically attractive.

Pit in thorn

The second name is T-shaped casing. Here the tenon and groove change places. The tenon is formed in the carriage of the casing, and the groove is sawn through the vertical end elements of the opening. During installation, the entire structure is also treated with an antiseptic and lined with soft insulation. The option is considered clean.

Construction work

Before you begin assembling the structure, you should prepare a high-quality foundation. If the object will be used as a residential building, then it is best to arrange a strip foundation. It will protect the space under the floor from the penetration of cold masses.

Formation of the strapping

It is advisable to lay elements with a large cross-section directly on the foundation to ensure stability for the future structure. A waterproofing material must be laid between the base and the lowest crown. Fastening to a reinforced concrete strip is not mandatory, but can be done using metal pins.

This way the strapping fragments can be connected.

The increased thickness of the beams allows not only to provide stability, but also to create a place for attaching floor joists. With this option, the crossbar is placed on the protruding part of the harness.

At the corners, notches are made in the form of a paw with or without a remainder. In this case, it all depends on the option of laying the elements. When connecting, small dowels are used, which are driven in at the intersection of wooden beams.

Corner joints with remainder

Each row consists of external and internal beams, the latter of which may have a smaller cross-section. All components must be securely connected to each other.

Joining at corners with the remainder can be done in several ways, which can be found below.

Single-line connection of beams at corners.

1. Single-line cuts in log houses require the construction of a perpendicular groove on one side. The width of the notch should coincide with the cross-section of the beam;
2. Bilateral connections involve creating cuts directly from each bottom and top. The depth of the perpendicular recess is usually one-fourth of the height of the elements;
3. Four-sided joints allow you to achieve maximum results in terms of strength characteristics, but they are quite difficult to perform. The notch is made from all sides at once.

Attention! Options for connecting elements in the corners for joining with the rest were listed above. That is, in this case, a certain part of the beams protrudes beyond the walls of the building itself.

Joining at corners without residue

When fragments of crowns are joined without leaving a residue, options with dowels, main tenons or dovetails can be used. The last of them is particularly reliable, but requires some skill to make a trapezoidal tenon.

Basic connection options without residue.

Additional recommendations

• The connection of the assembled crowns to each other is carried out using wooden dowels;

The use of dowels is mandatory

• Between the rows, a heat-insulating layer must be laid, which is fixed with small staples;
• During the assembly of the log house, a building level is used to maintain the vertical;
• If the fragments of the structure will be joined along the length, then it is necessary to make special cuts;
• In the places of window and door openings, transverse racks must be installed in any case;
• Metal brackets can be used as additional fastening elements at the corners;
• After erecting the main structure from ordinary or profiled timber, it is advisable to wait about 6-12 months for shrinkage to occur;
• For lightweight objects that require the use of elements with a small cross-section, a columnar base can be arranged.

Assembling a log house

The log house is assembled twice. The workers carry out the initial assembly (without insulation) on their own territory, and it is very difficult for the customer to monitor this process. To transfer it to the immediate construction site for ease of control means that you will encounter many difficulties (accommodating people for at least 3-4 weeks, cleaning and removing large volumes of wood waste, etc.). The best way out of the situation is to stipulate in the contract with the performing company that it is obliged to inform the client about the completion of the next stage of work (for example, about the readiness of each stack of logs, consisting of five crowns), so that he can visit the place and evaluate the quality making a log house.

Diagram of the main elements of the log house
After assembly, all logs are numbered, the log house is disassembled and transported to the construction site, where it is reassembled on the foundation and with insulation laid. For primary caulking, different materials are used: moss (good because it not only does not rot, but also acts as an antibacterial protection for wood), tow and flax fiber (can have a fire-retardant impregnation; the disadvantages are hygroscopicity and damage by moths), jute tape, etc.

The process of assembling a log house begins with the strapping - laying the lower crown, for which the thickest logs are used, because it bears the greatest load. To install the next crowns from the bottom of the logs, use an ax to select a groove whose shape corresponds to the bend of the log of the previous row. The most important assembly unit is the locking connections at the corners of the frame. Not only the “warmth of the house” depends on the quality of their execution (log buildings freeze in the corners), but also the strength of the box itself.

Characteristics

Compressive strength 460 kg/cm²

Volumetric weight, kg/m³

Thermal conductivity, W/(m °C)

For pine 0.09-0.18

oak 0.10-0.23

Shrinkage, mm/m

• Glued 5-10;
• Solid timber 40-80;
• Solid profiled 15-20.

Water absorption

More than 30% per day, for dry wood.

Vapor permeability

for pine 0.06-0.32 mg/(m h Pa) and

for oak 0.05-0.030

Fire resistance

The timber belongs to group “G” in terms of fire resistance.

Thickness

The beam happens:

1. Not profiled (regular) thickness from 150 mm to 220 mm
2. Glued
3. Profiled

The standard thickness of the timber is 200 mm, it will be enough for living in both early spring and late autumn; during winter living it is necessary to insulate the wall.

Walls made of timber with a thickness of 150 mm are perfect for a summer house; for winter living they need to be insulated.

For example, for the Moscow region, the optimal thickness for year-round use will be 200mm + 50mm insulation or 150mm + 100mm insulation.

Length without overcuts

For logs with a diameter of 22 cm, the length should not exceed 6.5 m, for a diameter of 25 cm - 8.5 m

The main advantages of houses made of wooden beams:

• they are low cost;
• if a team of 3-4 people is working, then to build such a house they will need up to three weeks, it all depends on the size and number of floors in the building;
• if you study construction technology, even a beginner can cope with this work;
• You don’t have to carry out interior finishing of the walls;
• wood has good thermal insulation, so it is comfortable to stay in the house both in winter and in summer;
• for such a house there is no need to build a powerful foundation;
• the timber does not curl during operation, since during its drying, products prone to curling are rejected;
• during processing of timber, internal stresses in it are relieved, so its shrinkage is minimal;
• there is no need to caulk the cracks; it will be enough to lay special gaskets during the installation of the walls;
• it has a smooth surface, so it does not need to be sanded

The disadvantages of this building material include the following:

• since this is a wooden material, it has a high fire hazard; to reduce it, it is necessary to treat the products with fire retardants;
• In order to protect the walls from the negative effects of precipitation, it is recommended that they be additionally coated with antiseptics or can be sheathed with a blockhouse.

In the photo below, options for walls made of timber.

How to choose the right wooden material?

First you need to decide what kind of house it will be, winter or summer. For a warm room, it is advisable to choose a material with a large diameter , starting from 25 cm. The thermal performance is also affected by the number of crown seams.

That is, the more there are, the greater the likelihood of heat leaks. In other words, the more crowns and logs there are along the height of the house, the worse it will be. Therefore, you need to choose thick logs so that construction costs are less.

The degree of drying of the log matters. Since chopped logs do not undergo chamber drying, their humidity can reach 50% or higher. It will take more time for shrinkage and natural drying in the fresh air. It is rational to buy a log with a moisture content of no more than 25%.

If it is possible to examine a product before purchasing, it is necessary to take into account its external characteristics. The material should be rejected or sent back to the manufacturer if:

1. There are a lot of cut branches on it. They dry out first, forming cracks or falling out completely.
2. There is a blue tint to the lumber. This is a fungus that cannot be removed. It does not affect the strength of the log, but it will have to be bleached regularly.
3. The log has large longitudinal cracks, the thickness of which reaches 3-5 cm. After drying, the cracks will grow through.
4. There are insect marks, holes or tunnels on the surface.

The log should not crumble in any places; this is an indicator of rot, which also affects the entire surface of the tree over time.

Foundation for a log house

The foundation for a house made of solid logs must withstand heavy loads. The most suitable is a strip shallow foundation. The price of this type of turnkey foundation in construction companies is quite high, therefore, it is also better to complete this stage of construction yourself.

Before building a foundation for a log house, it is necessary to mark the site. To do this, pegs are driven into the corners of the future house, and a string is stretched between them, indicating its contours. Next, a trench is dug with a depth of 60-70 cm and a width equal to the width of the foundation, and it depends on the diameter chosen for the construction of the log. It is desirable that the foundation protrudes beyond the wall from the outside by 5 cm, and from the inside by 10 cm. An internal protrusion is necessary for a more stable and high-quality fit of the floor joists.

A layer of sand (sand cushion) is poured onto the bottom of the trench, which is compacted well.

The next stage is the assembly and installation of formwork. It is made from boards or plywood by assembling panels. The shields are installed on top of the trench opposite each other and are well fastened together.

Reinforcement is placed inside the formwork, which is tied together into one single frame. For the foundation of a log house, reinforcement of at least 12 diameters is used, in several rows.

After installing the formwork and reinforcing frame, concrete can be poured. When purchasing concrete from a manufacturer, you must order concrete grade M250. When pouring yourself, the proportions are as follows: 1 cement (400): 3 sand: 4.5-5 crushed stone.

Important! It is necessary to provide holes in the foundation for ventilation of the subfloor. The height of the foundation from the ground should be less than 50 cm.