Calculation of timber for building a house. Calculation of the amount of timber. The purpose of the calculator, its advantages

There is a lot of talk about the fact that they have a lot of advantages. characteristic features The material under consideration are the correctness of forms and usefulness for the general living space. That is why the most important component for a correctly built house is the normalized calculation of the amount of material required. You can calculate the amount of timber per house on your own, without consulting specialists.

Of course, you should not avoid the advice of professionals, as they will be able to establish indicators in a short time and with incredible accuracy. For correct calculations, it is necessary to determine the required volumes, and find out how many components you need to take per square meter.

Thanks to the final results obtained, you can freely navigate the price range and future waste.

Calculation of the amount of materials

In order to make the calculation process more convenient, you need to use some list of simple tools:

Regular pencil;
paper sheet;
Calculator;
Roulette.

It is important to know that the indicators given in this article are approximate. Therefore, for a particular construction, it is worth using your own data.

The most accurate pictures are compiled during the planning period and the availability of the final project of the future structure.

Measurement of the entire perimeter of the future building;
Multiplying the perimeter by the floor height of the house;
Multiplying the acquired numbers by the thickness of the material used;
The resulting total number of cubes is an indicator necessary for construction.

If, in addition to the walls, it is planned to build internal partitions, this factor must also be taken into account in the calculations. If necessary, obtain indicators not in cubic meters, they can be easily converted into units.

The specific moment is determined by dividing the total volume by the volume of a unit of production.

Counting example

Suppose you want to install a one-story structure with dimensions of five by seven cubic meters. In addition to this, you need to install a partition together with. The total ceiling height is equal to three meters. As for the pediment, it also consists of a direct beam.

When performing activities, a tree is used, endowed with a section of 150 * 150 millimeters. In this case, the calculations will be as follows:

33 meters / (5 + 7) * 2 + 5 - this is the immediate perimeter together with partitions;
33 * 3 * 0.15 \u003d 15 square meters - these are the total volumes of the wall surfaces of the first floor;
5*3*0,15=2,25 square meters- pediment volumes.

Having received all the above indicators, it is necessary to sum up. In this case, it is shown that 17.25 square meters of material is required for wall surfaces.

This is all taking into account window openings, doorways, beams and, of course, ceilings. It is important to remember that components should be purchased with a small margin.

Summing up, we get a total cubic footage equal to 25 square meters.

Dimensions of required materials

Sufficiently significant parameters are the thermal conductive properties and, of course, the thickness. In the production of a summer house or cottage, necessary for regular living there, it is better to use materials with different thicknesses.

In case of summer country cottage width and thickness, in principle, does not really matter. Here it is possible to use materials endowed with a cross section of 100 * 100 millimeters. In the case of a cottage, you should pay attention to beams with a section width of more than 150 millimeters. Of course, additional thermal insulation wall openings.

The specific number of elements required for the construction process depends on the thickness parameters. If you want to save on the purchased material, you need to remember about the not quite high-quality thermal effect obtained in the future.

For the construction of an insulated building, it is necessary to use beams with a thickness of approximately fifty centimeters.

A similar result can be obtained with the use of sections of 150 * 150 millimeters, as well as insulation of ten or fifteen centimeters.

Construction wooden house- a rather expensive option, since high-quality lumber is expensive. Because of this, it is especially important correct calculation the amount of timber that will be required to erect the building.

The amount of lumber is measured in cubic meters: since the timber has the correct shape and a square or rectangular section, it will not be difficult to calculate how much timber is in a cubic meter and determine how much material you need to purchase for a building of a certain area. How to calculate the cubic capacity of a bar for a house?

Basic calculation formula

The calculation of the cubic capacity of a house from a bar is based on several main parameters:

Bar section. Thermal insulation characteristics depend on the thickness of the material, therefore this parameter is especially important not for summer cottages, but for capital construction. The most common option is a bar with a section of 150x150 mm. It's enough to build warm home, while being inexpensive.
The linear dimensions of the house. It is important to calculate not only the length and height of the walls, but also the number of other additional elements that require timber: these are rafters, floor and ceiling beams, etc. They also need to be included in the calculations, since it is better to immediately purchase all the necessary material.
It is also necessary to take into account the type of timber used. Profiled timber differs in its geometric structure, so its quantity is calculated specifically.

How to calculate the cubic capacity of a house from a bar? The basic calculation formula is as follows: the volume of the beam = the length of the walls of the house * the height of the walls * the thickness of the beam. Let's take a closer look at the calculation example:

It is necessary to build a house from a bar with a wall height of 2 m, a wall thickness of 150 mm, the length of the walls of the house is 6x9 meters. It is planned to build a five-wall frame, therefore, the material for the construction and the fifth wall must be included in the calculations.

It turns out: 36 linear meters (the perimeter of the house) is multiplied by 3 m (wall height) and 0.15 m (beam thickness). As a result, it turns out that the construction of such a house will require the purchase of 16.2 cubic meters. m. timber. It is on this figure that suppliers will be guided.

In this case, it is necessary to subtract from the resulting amount the volume of timber, which will be saved on window and door openings. The result will be the quantity that you need to focus on when buying. If you need to calculate the cubic capacity of the timber per house, you need to round the calculations up. It often happens that at least a small part of the material is defective, so there may be a shortage.

Calculation of the volume of timber for floor and ceiling beams

It is also necessary to include a beam on logs, beams and other elements in the calculation. Their number depends on the selected type. truss system, on the size of the house and some other parameters. Basic provisions:

The standard distance between floor and ceiling beams is 0.8-1 meter, beam dimensions for beams are 100x150 mm. The number of beams per house is calculated as follows: the total length of the building is divided by the step length, one is subtracted from the resulting value. That is, if the length of the building is 10 meters, with a step of 0.9 m, 10 beams will be required: divide 10 by 0.9 and subtract 1.

The standard length of one beam will be 6 meters, which means that 60 linear meters of timber will be required. Since the cross section and length are known, it will not be difficult to calculate the volume: 0.1x60x0.15 \u003d 0.9 cubic meters. m. At the same time, it is advisable to purchase 1 cubic meter, so that under any force majeure circumstances you do not have to buy additional material.

Calculation of the number of timber per truss system

More complex calculations will be required for the rafter system of the house. Most often in suburban construction use conventional gable roofs, and the slope will depend on the type of material chosen.

The larger it is, the less snow will linger, but the load from the wind will increase. Consider the calculation for a standard roof with a slope of 45 degrees.

The standard distance between the rafters is 60 cm; material with a section of 100x150 mm is used for them. At the same time, the smaller the rafter step, the smaller the thickness they can have due to the distribution of loads. Calculations are performed as follows:

Independent calculations take a lot of time, so sometimes it's easier to use a special calculator that can be found on construction sites. The main parameters of the building are driven into the program, after which the main calculation will be performed.

However, it must be remembered that any calculator gives only an approximate result, which must be rounded up. The result of the calculations is multiplied by the average cost of timber in the region: as a result, you can get the approximate cost of building materials for the house.

The correct calculation of the cubic capacity of the timber will allow you to make the most accurate estimate and avoid unnecessary costs. Many construction companies offer a free estimate, and you can compare several options in advance. Discuss with the architect possible options savings, then the construction will not require sudden additional costs and will be as effective as possible.

When the idea of building a house comes to a stage practical action, there is always a need to calculate the required amount of material. Accurate calculations are carried out according to the project of a particular house (See).

Calculate the perimeter of the house by adding the lengths of the outer walls.
Obtaining the area of the outer walls of one floor by multiplying the perimeter with the height of the walls.
Calculation of the number of cubes by multiplying the area with the width of the beam.

This results in the amount of material required per floor. When it is planned to install additional internal partitions made of timber in the house, then they must also be taken into account. Knowing the total volume of material in 1m³, you can calculate it in pieces.

And so the formula for calculating the volume of timber in cubic meters:

p is the length of the walls of the house (meters).
h is the height of the walls (meters).
l is the thickness of the timber (meters).

On the example of a house (dimensions 6 × 9m, 6 meters additional inner wall, height 3m, timber 0.150 × 0.150m), the calculation of the required material does not look like this:

p=9+9+6+6+6=36m.
h=3 meters.
l=0.150 meters.

After multiplication, the volume of the required timber is obtained:

V=36m*3m*0.150m=16.2m³.

Calculations of the volume of building materials become a little more complicated if material of different lengths and sections is needed to build a house from a bar. Then, first, the volume of the beam of each section is calculated separately, and the values \u200b\u200bare added up.

The most popular material has a length of 6 m, while the walls in the example are longer, then they plan a main wall, which becomes a carrier.

The size of the beam, of course, plays a role, but it is important to evaluate the economic feasibility and take into account the heat-conducting parameters of the material.

The width of the beam becomes relevant when it is planned in the house year-round living, but any house can be insulated with high-quality thermal insulation. When it is planned to build just a country house, then you can choose a material with dimensions of 0.100 × 0.100m.

You can calculate the volume of one beam by multiplying its width, thickness and length. Then the volume of a six-meter beam is 0.150 × 0.150 m. has a volume of 0.135m³. After calculating the total volume and quantity of timber in 1 cube, you can estimate the estimated cost of the material.

The most accurate calculation of the volume of a beam is carried out if the area of \u200b\u200bwindows and doors is subtracted from the area of \u200b\u200bthe walls, and the resulting value is multiplied by the known thickness of the beam.

You need to know that when a house is built from profiled timber, then 10mm. the crown “enters” the profile and a larger volume of material is required than calculated using the above methods.

Simple formulas do not take into account the lengths of outlets formed when cutting "into the bowl", they also increase the total cubic capacity.

By making calculations, you can also determine how many pieces of timber are needed per house by dividing the total amount of material (cubic meters) by the volume of one product.

When making a scrupulous calculation of timber per house, use an online calculator to check the exact amount of wood purchased.

Then you will not have to overpay for the delivery of lumber purchased for the construction of houses, baths, summer cottages and other capital buildings.

The purpose of the calculator, its advantages

It is difficult to calculate the exact amount of timber on your own, to reach the total volume of all the necessary positions. Not only the width and height of the timber are taken into account, knowing the total length, the height of all walls, but also the density of the wood.

Then, having reached the quantity and volume of the required timber, knowing the price for 1 m 3 of purchased lumber, you can automatically immediately calculate the total cost of wood for a particular house or bath.

It is important to know: Initially, correctly determine the building material. The timber is not only profiled, but glued.

It is easier to look at the exact data on the lumber used in the construction estimate, which indicates the dimensions, the original name of the materials. Marking, section of blanks.

How to use

Accurate calculation of the required lumber using online calculator but it can be done only knowing all the technological features of the buildings under construction and the cross section of the timber.

The calculator already has an automatic calculation algorithm. Therefore, by entering the requested data, you can immediately get to the amount and total volume of wood processed from all sides.

Note: knowing the parameters of the section of lumber, the length is taken within the standards - 4.5 m; 5 m or 6 m (depending on the round timber).

Types of timber, application

For the construction of houses, timber is mainly made from coniferous wood (pine, spruce). Construction material it can be with a front rectilinear side, or have a D-shaped appearance, which will imitate the construction of rounded logs.

If you can manage to build a bath square section 100x100 mm, then for capital buildings during construction one-story houses, dachas buy timber with a section of 150x150 mm, and for two-storey cottages, higher buildings will have to purchase lumber with a cross section of 200x200 mm or more.

Careful grinding is performed on the side that will face the residential part of the house. Then you do not have to additionally deal with the decoration of wooden walls.

Calculation of cubature

To make it clear, consider an example of calculating the cubic capacity of a beam for a one-story cottage with dimensions of 8x6x3 m. The building also has 1 internal partition of 6 m.

First you need to calculate the perimeter: (LxS) x2 + S1 \u003d (8 + 6) x2 + 6 \u003d 34 m. The total area of the building is calculated using the formula: 34x3 \u003d 102 m 2. Where 34 is the perimeter of the walls, 3 is their height. Multiplying the result by the parameter of the side of the beam, we get the total volume: 102 * 0.15 \u003d 15.3 m 3.

When calculating, it is essential to take into account the openings in the walls - this will significantly save money, not to purchase extra building material. It is recommended to use project drawings and diagrams for accurate calculations.

Which bar is better to use

It is worth buying affordable lumber, represented by coniferous species of high-quality wood that have been processed and naturally dried.

Profiled timber is purchased standard sizes with a section: 100x100 mm, 150x150m, 200x200 mm and a length of 4 m to 6 m or more. The glued timber used in construction, called lamellas, is pre-sawn into boards. This material is subjected to planing and special drying, at the output it has a wood moisture content in the range of 8–9%.

After sorting, the dried boards are glued together on a hydraulic press, forming a glued beam. In the technical process, water-resistant special composition of glue is used. The most durable among the two types of sawn timber under consideration is glued laminated timber, which is recommended in capital construction.

Calculation of material for floor and ceiling

Rafters, beams used in the arrangement of the ceiling, floors are quite suitable with a section of 100x150 mm. Knowing the exact dimensions of the future building, it is easy to calculate the lumber for the ceiling and floor.

If the installation step = 1 m, 7 beams can serve as lags, the length of which is 6 m each, including 7 beams with the same length, will be prepared for arranging the ceiling. In general, 14 beams or 84 p.m. When calculating the required amount of lumber, the resulting length is multiplied by S sec. , and we get 84 * 0.015 \u003d 1.26 m 3.

It is also necessary to take into account the possible percentage of out of condition, which, on average, can be up to 5% of the total purchased timber.

Roof calculation

When calculating the required amount of timber for arranging the roof, it is necessary to clarify the type of roof in advance. If this is a gable type of roof, it is necessary to find the optimal angle of inclination for the mounted structural elements.

As a rule - in the ridge the roof will have 45%. The mounting step of the rafters is a distance of 0.6 m. This type of fasteners is made on the basis of a bar with a section of 100x150 mm. The leg length of the rafter beam is calculated using the Pythagorean theorem. The hypotenuse of the formed triangle is the width of the house, and the rafters are the legs.

The length of the legs is 4.2 m. The length of the house is divided by a step and 12 beams are obtained. Knowing the cross section, we calculate for the roof - it will take 1.51 m 3. It is worth adding about 7 - 8% more for an even account for technical needs and possible non-condition.

Keep in mind: when installing a roof with a smaller distance between the rafters, it is permissible to use a smaller section of the timber.

In order not to be subjected to tedious calculations, use a popular online calculator. A free service will protect you from inaccuracies, allow you to insure yourself against inevitable miscalculations, and will not make mistakes.

Building a wooden house requires careful preliminary calculation and drawing up the most detailed estimate. Any large construction project is associated with significant costs, and it is important to initially correctly assess the financial possibilities and present all future costs.

An important expense item is the foundation, but the “box” itself will become the most expensive part, so you need to perform a preliminary calculation of the material for a house from a bar. In this case, it is advisable to consult with a professional architect and builders who know the real prices on the material market.

Which timber to choose for construction

First you need to choose the material for the house from the timber. It differs both in characteristics and in cost:

Most cheap option- an ordinary bar of natural moisture. It is the most common, but the least reliable. During the drying process, it can significantly deform, which leads to the formation of cracks and crevices in the walls.
Dried timber - wood material that has undergone preliminary chamber drying. Most of the natural moisture is removed from it, so it will be more reliable, but the cost will also increase significantly.
Profiled timber is an even more expensive type of material that will allow you to build completely smooth walls without gaps between the crowns. A special system of spikes and grooves on the top and bottom sides will allow you to build a building with the most durable walls.
Glued laminated timber - the leader in cost. This is not exactly a bar, since it is not made from solid wood, but from several layers of wood glued together. Such material requires long processing, and it will be very expensive.

Thus, the calculation of material for building a house from a bar begins with an analysis of the construction market and the choice suitable material. When this issue is resolved, you can proceed directly to the calculations.

How much material is required to build a log house

The calculation of the material for building a house from a bar can be carried out using a special calculator program that is posted on construction sites. This will speed up the calculation, but the result will still only be an approximation. You can also calculate the material manually using the following parameters:

Bar section. It depends on the required thermal conductivity: for a house without additional insulation, a beam with a section of 200x200 mm is required: this is quite expensive, so future owners often prefer to purchase thinner and cheaper material, and then insulate the building with inexpensive materials. Build a building for permanent residence permissible from a bar with a thickness of 150x150 mm or 150x100 mm.
House dimensions. The standard project is a building made of timber 6x6 meters in size, as it will allow you not to connect the timber to each other.
The height of each floor. The minimum height from floor to ceiling is 2.5 m, often they make it more, so that later they do not limit themselves in the choice of furniture and finishes.
area of windows and doorways. It is clear that the larger the window area, the less material is required. When developing a building project, the dimensions of the openings are indicated in the drawings, these values \u200b\u200bare used for calculations.

An example of calculating materials for a standard house

It will be of great help in calculating the required amount of timber for building a house. But let's try on simple example perform simple calculations.

The calculation of materials for a house from a bar requires making fairly simple calculations that make you remember school lessons geometry.

Preliminary calculation of the material for a timber house:

It is required to build a small house with linear dimensions of 6x6x2.5 meters. For construction, you need to purchase an ordinary bar with a section of 200x200 mm. It is planned to make a door with an opening size of 800x2000 mm in the building, in addition, it will have two windows measuring 600x800 mm.

Let's move on to the calculations:

The perimeter of the house: 6 * 4 = 24 meters. We multiply this value by the height: 24 * 2.5 \u003d 60 square meters. meters - the total area of \u200b\u200bthe walls.
We calculate the area of windows. We multiply 0.8 * 2 \u003d 1.6 square meters. m. - door area, 0.6 * 0.8 * 2 \u003d 0.96 m. - area of \u200b\u200btwo windows. These values must be subtracted from the total area of \u200b\u200bthe walls: 60 - 1.6 - 0.96 - 57.44 square meters. m. - this is the area of \u200b\u200bthe house.
Since the thickness of the timber is 0.2 meters, the volume of the walls is calculated as follows: 57.44 * 0.2 = 11.488 cubic meters of timber will be required for construction.

Important points when calculating the material

If you need to build a house from a bar, the calculation of materials will always be approximate. It is imperative to add at least 15% to the obtained value, which will be required for trimming, damage, arranging corners, etc.

The timber is required not only for the construction of the box, but also for the installation of rafters, floor logs, ceilings, etc. As a result, in the final calculations, the amount of timber increases by about a fifth.

The exception is the construction of a house from a finished house kit. In this case, together with the architect, the exact amount of materials that will be required for construction is calculated, and all parts are pre-treated in the factory.

A ready-made set of numbered parts arrives at the construction site, from which the building is being built, like a large constructor. All the details are exactly adjacent to each other, nothing needs to be adjusted and modified. You will have to buy only fasteners and insulation, and the work can be completed faster.

The calculation of lumber should take into account not only the purchase of the timber itself. You will need an inch board for the construction of a rough and fifty for a finished floor of a given area, material for the construction of a roofing pie and other expenses.

Each wooden element used in construction must be treated with antiseptics and flame retardants, finished house needs to be painted or otherwise finished. The walls can be sheathed with drywall and additionally insulated.