Indicate the dimensions in units convenient for you: in millimeters,
centimeters or meters by checking the required item.
A– The length of the facade wall is determined taking into account the size of your site and required area Houses. When determining the value A It is recommended to take into account standard dimensions; the woodworking industry offers rounded logs up to 6 m long. If a larger length is required, the logs will need to be joined, which may affect the strength and thermal efficiency of the structure.
B– The length of the side wall is determined taking into account your wishes and the space allocated for the construction of the house on the site. The length of standard lumber (up to 6 m) should be taken into account; in the future this will have a positive effect on the cost of the log house.
Size values A And B it is possible to indicate by the external dimensions of the log house, or along the axes of the walls (this option is often used by professional construction companies, designing and manufacturing log houses), select the required item.
H– The height of the facade from the first (so-called casing) crown to the ridge of the pediment. If the log house is planned without a pediment, then set the value H= 0.
G– Height of the side wall from decorative crown to the top point of the pediment (ridge). If you do not plan to build a side gable, then enter the value G= 0.
U– Height of the wall at the corner. This parameter determines the height internal space future home. Classic technology construction of a log house assumes that the first crown of the log house is the frame crown, the second - bottom harness, into which the floor joists are embedded. Usually the frame crown is made from thicker logs. If the height indoors is 3 m, then the parameter U≥ 3 m + the values of the working heights of the first two rims (i.e. if the D of the logs used is 0.25 m, then to ensure an internal height of 3 m U≥3.5 m). You should also take into account the amount of wood shrinkage; in the first years after construction, log houses shrink, reaching 1/20-1/30 of the original height of the log house. Data on drying of lumber are given in "and GOST 6782.2-75 "Lumber products from wood hardwood. The amount of shrinkage."
Height value U must be a multiple of the crown pitch (working height of the log C), if this condition is not met, then during the calculation the program will automatically change the height and the message Changed will appear next to the calculation result.
Partitions of the first and second floors.
Specify the length of the partitions of the first L1 and second floors L2.
Specify the height of the first floor partitions P1 and second floor P2.
If partitions are not planned on the second floor, set the values L2 And P2=0.
For small log houses (for example, 3x5 and smaller), the construction of partitions from logs is often not justified, since it critically reduces the internal volume of the house.
If calculating the material for partitions in the house is not needed, then set the values L1,L2,P1 And P2= 0.
D– The diameter of the rounded log is selected based on the purpose of the structure, taking into account the climatic conditions of your region. You should take into account the recommendations of GOST 9463-88 “Round timber coniferous species. Specifications" and GOST 9462-88 "Round hardwood timber. Technical conditions". If you want to build a bathhouse or summer country house, then a diameter of 0.16-0.22 m is suitable. The use of thicker logs is often not justified, since it significantly increases labor costs and the cost of construction. If the house is planned for year-round residence, choose a log diameter of at least 0.22 m. It is important to remember that the larger the diameter of the logs, the warmer the house (since the number of crowns, cuts, locks decreases and, accordingly, there will be lower heat loss). The cost of rounded logs of larger diameter will more than pay off during the operation of the house. However, working with massive logs is more difficult; you may need special equipment - a crane or manipulator.
C– The working or useful height of the log determines the pitch of one crown. The value of this size is less than the diameter of the log and directly depends on the width of the groove, which ranges from 1/2-2/3 of the log diameter.
T– The length of the ends of the logs protruding at the corners of the house. When cutting without residue, or into a clean corner, T=0, while maximizing the use of the entire length of the material and reducing the consumption of logs. At the same time, this type of angle requires very careful adjustment (according to SNiP 3.03.01-87 “Load-bearing and enclosing structures”, the size of the gaps at the junction of logs should not exceed 1 mm), and is subject to freezing and blowing. To avoid this, additional finishing of the corners is necessary, for example with overlay boards.
Chopping with residue or into a bowl is more expensive, but at the same time more heat-efficient and durable option. Since the ends of the logs protruding at the corners of the house protect this unit from blowing, raining and freezing. When chopping into a bowl, the parameter T, according to GOST 30974−2002 “Corner connections of wooden block and log low-rise buildings” take ≥1.4 diameters of the logs used.
N– horizontal distance between the dowels (these are round wooden pins that prevent deformation torsion of the logs). The distance between the dowels N is 1.5-2 m, more detailed information can be gleaned from SNiP II-25-80 " Wooden structures" It is important that humidity wooden dowels was 3-4% lower than that of the logs being joined, then after drying the connection will not weaken. The holes for the dowels must be drilled strictly vertically to ensure that the logs can move during the shrinkage process.
V– Weight 1 m 3 ( cubic meter) or so-called specific gravity rounded log is determined by the density of the wood (GOST 16483.1-84 “Wood. Method for determining density”). Density depends on the type of wood, humidity, and location of growth. Conventionally, at a humidity of 12%, tree species can be divided into three groups: with low density (up to 540 kg/m3) - spruce, pine, fir, cedar; medium density(550-740 kg/m3) – larch, summer oak; high density(above 750 kg/m3) – hornbeam, chestnut oak.
S– the cost of a rounded log in your region per 1 cubic meter (here you can add the cost of delivery, unloading of lumber and assembly of the log house) then click "Calculate".
Results of calculating timber for a log house
Calculator for calculating a log house, will help you calculate required amount material for a bathhouse, home or cottage.
As a result of the calculation, you will find out the perimeter and cubic capacity of the log house, the number of crowns, the areas and volumes of walls and partitions, the number of logs and their total length, both separately for walls, gables and partitions, and, in general, for the entire house.
Knowing the areas of external walls and partitions, it will be easy to calculate the required amount of impregnation and paints and varnishes.
The total length of the logs will help determine how many you will need to buy interventional insulation(moss, flax-jute, flax wool, sheep wool are used).
The number of pins is calculated approximately.
Openings for windows and doors are not taken into account.
The calculator will calculate the total weight of the log house, which is important for attracting a sufficient number of people and equipment for transportation and unloading. As well as the cost of the entire house, which will help determine the level of investment for building the desired log house.
Quite often, when looking for a contractor to build a house or bathhouse, we come across such concepts as the price for 1 m3 of rounded logs (OCB) or simply the actual cost of a log house. I'd like to figure it out! What does the cubic capacity of a log house consist of? How is the cost of a log house calculated and what does it consist of?
In order to on one's own It is necessary to calculate the volume of logs in a log house based on the given parameters (axial dimensions and height), calculate the number linear meters logs in a log house. The easiest way is to multiply the length in linear meters in one crown by the number of crowns of a log house.
Calculation of the number of crowns depending on the given height of the log house.
For calculation required quantity crowns, you need to know the working height of the rounded log. Working height of log directly depends on the width of the groove. Below we provide a table for a standard groove.
Table of working height of logs (N otsb):
| Log diameter | groove width | Working height of log |
| 180 | 90 | 156 |
| 200 | 100 | 173 |
| 220 | 110 | 191 |
| 240 | 120 | 208 |
| 260 | 130 | 225 |
Dividing the given height of the log house by the working height of the log, we get the number of required crowns.
We count:
3000mm/191mm=15.71 - therefore, for a given height we need 16 crowns.
Based on the drawing of the log house, we calculate the number of linear meters of one crown (taking into account the protrusions - corners)
IN in this example the length of one crown is 9+9+6+6+6=42 m.p. Consequently, the total linear meters in this log house are 42x16 = 672. Next, you need to take into account and add the halves of the first crown (zero crown) - they necessary to shift the rows in the crowns. We got 3x6 halves = 18 linear meters. Since one whole log produces 2 halves, we divide 18 by 2 and get 9 m.p. logs in halves. So, we got 681 linear meters, but this does not take into account openings. Minus the linear meters in the openings, the result is 546 m.p.
In total, in this log house there was 20.75 m3 of net volume of central fiber. And the last thing that needs to be taken into account when calculating a log house is illiquid trimmings and losses when sawing parts of the house kit.
They can range from 3 to 7 percent. Accordingly, the qualifying cubic capacity of this log house will be approximately 22 m3.
With the cost of one cubic meter of rounded logs in a house kit being 8,500 rubles, the price of this log house will be 187,000 rubles.
We hope this article will be useful to you in your calculations! Good luck to you in your endeavors!
In the complex process of building a house, the total number of crowns is of interest. In the Russian North, where two-story houses were built, there could be 19 or 21 of them. Where it was warmer and the housing was one-story, 13 crowns were placed (in any case, an odd number).
What might the number 13 indicate in a construction context? Such a number of crowns is another direct evidence that human housing embodies a model of the world, the Universe, and the Cosmos. It is known that the most important structure-forming account of the mythological world order is the number 12 - as a derivative of the combination of coordinates of space (four cardinal directions) and time (three-dimensional dimension: past, present and future): 4 x 3 = 12. The sun passes the same number of constellations during the year solstice, the same number of months our calendar year has, the same number of disciples of Jesus Christ. The living space of the house consisted of 12 crowns. At the same time wooden frame closed (rounded, looped) the 13th wreath, which was already above the ceiling level, went beyond the living space and functionally performed a completely different role. He was a transitional, “connecting link” between the world of the living and the magical sphere - the habitat of the supreme gods.
In the red corner between the third and fourth logs they placed a silver or gold coin. Obviously, this ancient Slavic sign of sacrifice reflected the influence of Christian Orthodox tradition, in which the triune essence of God was especially revered - God the Father, God the Son and the Holy Spirit.
As soon as last log will be carefully adjusted, covered with dried moss, the hostess will serve a clay bowl with grain on top. One of the master carpenters walks around the perimeter of the building and sprinkles grain on the ground on both sides of the walls, wishing the owners happiness, health, and wealth.
Oksana Kotovich, Yanka Kruk. Newspaper "Zvyazda", www.zvyazda.mіnsk.by, December 2010.
Cricket
Cricket in understanding Eastern Slavs was a symbol of comfort, order and prosperity, “a living guard at home.”
The cricket is an insect that likes warmth, so winter time he lives closer to the warmth: in the beams and logs that make up the house.
If a cricket starts its monotonous song, it means that nothing threatens the house, everything is fine in the family. Conversely, it was believed that if crickets left the house in the middle of winter, this foreshadowed misfortune: a fire, the death of one of the relatives.
The cricket is an untouchable insect. It was widely believed that to kill a cricket was to kill good spirit at home, bring trouble. In some regions it was believed that killing a cricket could lead to the death of a loved one.
And the people remarked: “If the cricket starts singing, it’s time to sow rye.”
Oksana Kotovich, Yanka Kruk. Newspaper "Zvyazda", www.zvyazda.mіnsk.by, September 2011.
-> Sections of the site -> Log house -> Do-it-yourself log house -> The first (framed) crown of the log house.The lower crown works in the most difficult conditions - close to the ground, more wet than other crowns during rain and snowfall. Therefore, traditionally, special attention was paid to its production.
Before laying the first (lower) crown of the log house, do not forget about waterproofing, which is 2 - 3 layers of rolled bitumen waterproofing material, laid between the foundation and the logs to prevent the walls from getting wet from the foundation.
The first (flashing) crown is made from the thickest logs.
If you have such an opportunity, then it is best to make the first crown from the types of wood that are most resistant to rotting. Larch or oak are best suited for this purpose.
It is obvious that sides 1, 3 and 2, 4 are at different horizontal levels, which differ in height by half the diameter of the log. Therefore, the first crown, from which the entire frame begins, can be realized in two ways.
Despite some inconveniences, such a crown will be more durable due to the fact that the logs are subject to minimal processing and remain almost solid.
To prevent rotting of the logs of the first crown, special attention must be paid to thoroughly antiseptic surfaces in contact with waterproofing (hewn surfaces). Before laying, coat the hewn surface with an antiseptic using a brush 3 - 5 times. By the way, this is the only place in the bathhouse where I used antiseptic.
Backing boards should not be coated with melted resin (bitumen) or wrapped in roofing felt. A tree clogged with resin or wrapped in roofing felt will rot very quickly.
An inter-crown sealant is laid between the foundation waterproofing and the backing board, between the backing board and the first crown.
The process of making a crown molding is shown in a series of videos frame (first) crown of the log house.
The framed (first) crown of the log house is video technology.
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Cover crown. Part 2. Chopping logs |
“Bricks of a log house” - crowns.
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The peculiarity of any tree is that its trunk grows unevenly in thickness: on the south side - more, on the north - less. Therefore, the annual rings on the south side are wider than on the north. For example (Annual rings of a tree), I specifically chose a tree that grew on the southern edge and the difference in the thickness of the sides is clearly pronounced. At the crown of the log house, the logs are laid so that the side of the log where the annual rings are denser (north side) faces outward. The north side is less likely to crack. And the southern one, due to its lower density, is a little warmer. However, this is only possible if the forest is built (flat). If the log is curved, then it is laid on the wall of the log house regardless of the orientation of the annual rings, either with the hump up or the hump down. If there are a lot of crooked logs and their curvature is approximately the same, then one wall can be made slightly crooked by laying the logs with their humps facing outward. In the finished log house, the curvature of the wall is almost invisible. |
For reliable thermal insulation and windproof walls, between the logs, in the process of laying the crowns, is placed interventional seal. I am an ardent supporter of such a sealant as moss- unique in its properties natural material. For more information about its advantages, preparation, storage and placement on logs, see the topic “Moss. Caulking of a log house"
Basic principles of log house assembly.
1. Layout of logs in the crown.
2. Vertical mount logs
In order for the structure of the log house to be rigid, so that over time the walls do not swell in the vertical plane (especially in the area of doors and window openings), when assembling a log house, vertical joining of logs with dowels is used (in Belarus they are called dowels).
Dowel (dowel) is round or quadrangular wooden stick, which is driven into a hole drilled in 2 - 3 logs in height at once. Any wood can be used as a material for dowels. Pins are inserted into each crown.
Under no circumstances should they be used as dowels. metal pins!
During the cold season, moisture from the air passing through the inter-crown seal will condense on the metal pins. The joints will be constantly wet, which will be a prerequisite for the development of rotting processes inside the walls.
Sometimes, unfortunate builders, in order to hold the logs together vertically, use a sledgehammer to drive sharpened metal pins into the ridge of the top log. Under no circumstances should this be done!, since clogged pins prevent the logs from freely shrinking and they hang on the pins. As the logs dry out, the inter-crown cracks increase.
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After completing the assembly of the log house, for aesthetics, we make the protrusions of the edges of the logs in the corners the same. To do this: measure on the top log such a distance from the corner to the end that suits us (but not less than 20cm). Then, placing a plumb line to this mark, we draw marks with a marker on all the bottom-lying logs. Using a chainsaw, we cut the ends of the logs strictly vertically (according to our markings). Since the fibers at the ends of the logs remain exposed, the ends of the logs will dry faster than the middle of the log. And, due to this, large cracks will appear at the ends. In order to minimize cracking, I recommend covering the ends of the logs acrylic varnish for outdoor use or PVA glue. In the old days, the ends of log houses were covered with clay, lime mortar or painted. |
When cutting a log house openings for windows you can not do it or make it deliberately smaller in size. Later, when we install the windows, we use a chainsaw to cut out openings to a specific size, taking into account the mounting spike.