What is a tree cube? How to calculate the required volume of the board? What is a cubic meter of edged boards?

There are dozens of professions in the world related to wood, and specialists must be able not only to select and process wood correctly, but also to calculate everything. Every specialist should know how to calculate the cubic capacity of a board, because... This step is basic before starting construction.

The main stage of work

It is a little more difficult to calculate than an edged one, due to the fact that it has not 3 indicators, but 4. Often sellers try to provide their own cubeturners, which specifically indicate incorrect data, so everything always needs to be recalculated.

The volume of any lumber is calculated according to the standard school formula– V=abc, where a is width, b is height, c is length. Thus, let the edged board have parameters of 50x150x6000 mm, which are converted into meters, it turns out 0.05x0.15x6 = 0.045 m³ Everything is extremely simple and clear.

But at unedged boards everything is a little more complicated, because The width at the bottom and top is different. Using a tape measure, measurements are taken of the width of the board from below and above, after which the data is reduced to the arithmetic mean. Thus, the volume formula will look like: V=(a1+a2)/2bc, where a1 is the width of the lower edge, a2 is the width of the upper edge, b is the height and c is the length. In practice, let the top edge (narrow) be 150 mm, and the bottom 180 mm, height 50 and length 6000 mm, i.e. V=(0.15+0.18)/2x0.05x6=0.0495 m³. It is this data that will be used further for all calculations.

This data can already be used to calculate the amount of lumber per 1 m³. To do this you need 1/0.0495=20 pcs. Everything that remains after the decimal point must be rounded to form a whole number. The volume of lumber is calculated individually each time so that errors can be avoided.

An error is often identified when the wide side is taken as a basis, and the narrow side is not taken into account, which gives a small visible error for the client (1-2 pieces per 1 m³), ​​but the seller wins a significant profit. If 1 m³ leaves 1 board, then from every 19 m³ another 1 m³ remains, which already brings excess profits. And taking into account the required volumes of material, even for 1 house, this 5% pays off very seriously.

For example, here is a simple table where the widths are 150 and 180, and only the length and height differ:

Summarizing

The calculations themselves are not complicated, because are carried out according to formulas studied at school. But during the process, it is very important to approach the process with maximum rigor to avoid mistakes.

Only initially the process may seem complicated, but after 5-10 approaches everything will seem easier.

When implementing construction work for the construction of a residential building, a specialist must perform big number various tasks, one of which is: drawing up and calculating the estimated cost to the final finishing of the premises of a residential building. It is mandatory to calculate the required amount of various building materials, which is quite difficult to do. Therefore, such knowledge - how many boards are in a cube - has a very important for a specialist who is engaged in the construction of a residential building and wants to complete the work as efficiently and quickly as possible.

Buying club: existing types of boards

To calculate exactly how many board pieces are in a cube, you will need to know not only what exactly a board cube means, but it is worth understanding important point that exist different kinds boards and what is possible to purchase on modern market for performing various construction works. It should be noted that the cube of almost all materials, regardless of the type of material, is calculated in the same way, that is, according to one specific method. The types of boards have no influence on the calculation of the cubic capacity of this building material.

Non-grooved types of lumber are: timber, various edged boards, as well as unedged boards (they are an exception when calculating cubic capacity, because this process occurs a little differently). Tongue-and-groove types (which have special grooves for making joints) include: modern lining, blockhouse, flooring material, as well as imitation natural timber. When you choose a tongue-and-groove type of building material to purchase, then you will need to pay attention to the fact that when making calculations, only working width boards without tenons. If we talk about a blockhouse (imitation log), then when calculating the cubic capacity, only the thickness at its highest point is taken.

How many boards are in 1 cube: performing the calculation

Any person, even from his school days, understands how cubic capacity is calculated. For this procedure, it is necessary to calculate quantities such as: length, width and height. A similar principle is used to calculate the cubic capacity of 1 board. When performing such calculations, it is recommended to convert all available values ​​into meters. The cubic capacity of 1 board, which has a cross-section of 150x20 mm. and a length of 6 m, is calculated as follows: 0.15 multiplied by 0.02 and 6, so that the cubic capacity of this board will be 0.018 cubic meters.

Let's apply the volume formula V= L*h*b (where L is length, h is height, b is width).

L= 6.0; h= 0.02; b= 0.15.

Thus, V= 6.0*0.02*0.15 = 0.018 m3.

To determine how many boards are in one cube: divide 1 m3 by cubic capacity (the volume of one board).

1 m 3 / V = ​​N pcs.

1 m 3 / 0.018 m 3 = 55.55 pcs.

Thus, the number of boards in one cube is 55.5 pieces.

Finding out the cost of a certain type of board when the values ​​of its volume is known is quite easy: 0.018 multiplied by the price of 1 cubic meter. When 1 cube of a certain type of board costs, for example, 5,500 rubles, then the cost will be 99 rubles. At this point in the calculation, there is some trick of sellers and managers in construction stores, because the cubic capacity of the material is rounded to some integer values.

Such rounding can lead to such a moment that the price of 1 board (when 1 cube costs 5500) will be completely different values. In addition to all this, it should be noted that various boards for construction, which have a nominal length of 6 meters, the actual length is 6.1 - 6.2 m, which is not taken into account when selling this building material. This also applies to the purchase significant number boards This can be seen quite clearly if we use a 150x20 mm board as an example. The number of boards in a cube is a value of 55.5 pcs. But, in a cube they count 55 pieces, which when performing the calculation will have a value of 0.99 cubic meters. In fact, it follows from this that the overpayment for 1 cubic meter of this popular building material can amount to 1% of the real price. For example, 5500 instead of 4995 rubles.

To calculate the cubic capacity for a continuous type of board, slightly different methods are used. When we are talking about buying 1 board, then measuring its thickness, as well as the total length, is carried out in the same way as when choosing edged building material. In this case, the average width is taken for calculations - between great value and small.

For example, when the width of the board at one end is 25 cm, and at the other 20, then the average value will be approximately 22 centimeters. When it is necessary to calculate the volume of a significant number of similar boards for construction, then you will need to lay them out so that the wide one does not differ from the narrow one, more than 10 cm. The main length of this material in the laid out stack should be approximately the same. After this, using a regular tape measure, an accurate measurement is made of the height of the entire existing stack of boards, and the width is measured (approximately in the very middle). The result obtained will then need to be multiplied by a special coefficient, amounting to a value from 0.07 to 0.09, directly dependent on the existing air gap.

How many boards are in 1 cube: special tables

To calculate the exact number of boards of a certain width and length in 1 cubic meter, various tables are used. Below are several such specialized tables, which indicate the cubic capacity of the common and in demand types of this material today. It is possible to calculate the volume of various boards of different sizes, for example, material for erecting a fence on your site, using the existing formula presented above.

Table of the amount of edged boards in 1 cubic meter

Board size Volume of 1st board (m 3) Number of boards in 1m 3 (pcs.) Number of square meters in 1m2
Twenty
Board 20x100x6000 0.012 m 3 83 pcs. 50 m2
Board 20x120x6000 0.0144 m 3 69 pcs. 50 m2
Board 20x150x6000 0.018 m 3 55 pcs. 50 m2
Board 20x180x6000 0.0216 m 3 46 pcs. 50 m2
Board 20x200x6000 0.024 m 3 41 pcs. 50 m2
Board 20x250x6000 0.03 m 3 33 pcs. 50 m2
Twenty-five
Board 25x100x6000 0.015 m 3 67 pcs. 40 m2
Board 25x120x6000 0.018 m 3 55 pcs. 40 m2
Board 25x150x6000 0.0225 m 3 44 pcs. 40 m2
Board 25x180x6000 0.027 m 3 37 pcs. 40 m2
Board 25x200x6000 0.03 m 3 33 pcs. 40 m2
Board 25x250x6000 0.0375 m 3 26 pcs. 40 m2
Thirty
Board 30x100x6000 0.018 m 3 55 pcs. 33 m2
Board 30x120x6000 0.0216 m 3 46 pcs. 33 m2
Board 30x150x6000 0.027 m 3 37 pcs. 33 m2
Board 30x180x6000 0.0324 m 3 30 pcs. 33 m2
Board 30x200x6000 0.036 m 3 27 pcs. 33 m2
Board 30x250x6000 0.045 m 3 22 pcs. 33 m2
Thirty-two
Board 32x100x6000 0.0192 m 3 52 pcs. 31 m2
Board 32x120x6000 0.023 m 3 43 pcs. 31 m2
Board 32x150x6000 0.0288 m3 34 pcs. 31 m2
Board 32x180x6000 0.0346 m 3 28 pcs. 31 m2
Board 32x200x6000 0.0384 m 3 26 pcs. 31 m2
Board 32x250x6000 0.048 m 3 20 pcs. 31 m2
Sorokovka
Board 40x100x6000 0.024 m 3 41 pcs. 25 m2
Board 40x120x6000 0.0288 m3 34 pcs. 25 m2
Board 40x150x6000 0.036 m 3 27 pcs. 25 m2
Board 40x180x6000 0.0432 m 3 23 pcs. 25 m2
Board 40x200x6000 0.048 m 3 20 pcs. 25 m2
Board 40x250x6000 0.06 m 3 16 pcs. 25 m2
Fifty
Board 50x100x6000 0.03 m 3 33 pcs. 20 m2
Board 50x120x6000 0.036 m 3 27 pcs. 20 m2
Board 50x150x6000 0.045 m 3 22 pcs. 20 m2
Board 50x180x6000 0.054 m 3 18 pcs. 20 m2
Board 50x200x6000 0.06 m 3 16 pcs. 20 m2
Board 50x250x6000 0.075 m 3 13 pcs. 20 m2

Table of the amount of timber in 1 cubic meter

Beam size Volume of 1st piece (m³) Quantity of timber in 1m³ (pcs.)
100×100×6000 0.06 m 3 16 pcs.
100×150×6000 0.09 m 3 11 pcs.
150×150×6000 0.135 m 3 7 pcs.
100×180×6000 0.108 m 3 9 pcs.
150×180×6000 0.162 m 3 6 pcs.
180×180×6000 0.1944 m 3 5 pieces.
100×200×6000 0.12 m 3 8 pcs.
150×200×6000 0.18 m 3 5.5 pcs.
180×200×6000 0.216 m 3 4.5 pcs.
200×200×6000 0.24 m 3 4 things.
250×200×6000 0.3 m 3 3 pcs.

Table of the amount of unedged boards in 1 cubic meter

It is almost impossible to achieve waste-free lumber production. There are many reasons for this. When cutting logs into lumber standard sizes receive unedged boards as a by-product. This material is considered consumable, so its quality special requirements are not presented.

As finishing material Unedged hardwood boards are good. There are many ways to highlight the unusually beautiful structure of wood. This lumber is also distinguished by the beauty of its uncut edge.

Unedged lumber: properties and features

The cubic capacity is calculated based on the width, height and length of the board.

As a by-product, this construction material has a relatively low price. Therefore, it is widely used for private housing construction as auxiliary material rough finishing of premises, etc.
These works involve calculating the number of copies. When selling, this parameter is measured in cubic meters, therefore, it is necessary to calculate in advance the volume required for the room.

The most commonly used specimens are from 25 to 50 mm thick, from 3 to 6 m long. By determining the area of ​​the surface to be coated and multiplying it by the thickness of the coating, we obtain the required cubic capacity not edged lumber. It is necessary to remember: the thicker the lumber, the heavier it is, the greater the load on bearing structures building.

Measuring the cubic capacity of an unedged board.

However, it will not be possible to independently calculate the volume based on the dimensions of a separate board that does not have clear edge dimensions. In this case, OST 13‑24 (Fig. 1) and GOST 5306-83 will help you calculate correctly.
Three options for calculating volume are defined: batch, piece, selective.
When purchasing a package, you need to pay attention to the following:

  • the front end of the package must be aligned;
  • the rows should not contain overlapping boards;
  • the width of the package must be the same along the entire length;
  • displacement of the outer boards inward or outward is allowed no more than 100 mm.

The piece method is clear by definition. The sample calculation method is not used when purchasing a small volume of material, so it is not practical to determine it for small batches.

Determining cubic capacity using tables

Doc.1 gives examples of how to calculate cubic capacity in packages. To do this, you need to measure the length, width, height of the package, and calculate its volume. Then multiply the result by the stacking coefficient. This coefficient is given in Doc.1. To calculate the size of a package with 25 mm thick material, the resulting volume must be multiplied by 0.61 or 0.66 (depending on the moisture content of the wood).
How to calculate cubic capacity individually, you can see in Fig. 2. Sequence of piece calculation:

  • select the thickness (mm), length (m) and desired width (mm);
  • Based on the known area to be covered, the required amount of material (pcs.) is calculated;
  • according to the diagram in Fig. 2 determine the volume of one copy;
  • Using a known quantity, the required value is found.

Scheme in Fig. 2 defines the parameter of one board. Its length is limited to a range from 3 to 6 m. The gradation in length is the same for everyone, but the gradation in width is different.
Table 1 shows the thickness values ​​and the corresponding gradation in width. This will give you the opportunity to decide what to expect when purchasing.
Table 1

Thickness, mm Width gradation, mm
19 25,28,32,35,40,45,50,55,60,65,70,75,80,90,100,110,125,130,150,175,180,200
22 25,28,32,35,40,45,50,55,60,65,70,75,80,90,100,110,120,125,130,150,170,175,180,190,200,25,210,220,225,280
24 24,96,100,120,130,150,170,190,200,210,220,250,280,300
25 25,28,32,35,40,45,50,55,60,65,70,75,80,90,100,110,125,130,150,175,180,200,225,250,275
28 28,32,35,40,45,50,55,60,65,70,75,80,90,100,110,120,130,150,170,180,190,200,220,250,280,300,
32 32,35,40,45,50,55,60,65,70,75,80,90,100,110,125,130,150,175,180,200,225,250,275
35 35,40, 45,50,55,60,65,70,75,80,90,100,110,130,140,150,180,200
38 38,76, 100,120,150,170,190,220,250,280,300
40 40,45,50,55,60,65,70,75,80,90,100,110,125,130,150,175,180,200,225,250,275
44 75,100,125,140,150,175,200,225,250,275
45 45,50,55,60,65,70,75,80,90,100,110,120,130,150,170,180,200,220,250,280,300
48 48,76,96,100,120,150,170,190,220,250,280,300
50 50,55,60,65,70,75,80,90,100,110,125,130,150,175,180,200,225,250,275,300

The tabular method of any calculations is the simplest. However, analysis of the data shown in Fig. 2 shows that the change in cubic capacity with a change in length obeys a linear law:
V = kL+b, (1)
where V is volume (m 3), L is length (m).
Table 2 contains the values ​​of the coefficient k and the free term b for boards 50 mm thick.
table 2

Content:

The seller and buyer of timber pursue their own interests. In such a rather delicate matter, you need to have certain - simple - knowledge. Today everyone has a tool: a calculator on their phone.

What is a cubic meter of edged boards?

How many edged boards are in one cube - Photo

Edged board- lumber with cleanly cut edges, without bark residues. The width of the edged board is at least twice the thickness.

Since the fee is charged for volume in cubic meters, let us recall the geometric formula for its determination:

W * H * D = volume.

Everything is calculated in meters

To find out how many boards are in one cube:

1 / (W * H * D) = number of boards in 1m3 (cube)

Where, Sh- Width, IN- Height, D- Length

Translation: 1mm = 0.001m, 10mm = 0.01m, 100mm = 0.1m

Below is a table of some types of edged boards and their volume

Board dimensions

Volume of one board Boards in 1m3 (cube)

20×100×6000

0.012 m³

83 pcs.

20×120×6000

0.0144 m³

69 pcs.

20×150×6000

0.018 m³

55 pcs.

20×180×6000

0.0216 m³

46 pcs.

20×200×6000

0.024 m³

41 pcs.

20×250×6000

0.03 m³

33 pcs.

25×100×6000

0.015 m³

67 pcs.

25×120×6000

0.018 m³

55 pcs.

25×150×6000

0.0225 m³

44 pcs.

25×180×6000

0.027 m³

37 pcs.

25×200×6000

0.03 m³

33 pcs.

25×250×6000

0.0375 m³

26 pcs.

30×100×6000

0.018 m³

55 pcs.

30×120×6000

0.0216 m³

46 pcs.

30×150×6000

0.027 m³

37 pcs.

30×180×6000

0.0324 m³

30 pcs.

30×200×6000

0.036 m³

27 pcs.

30×250×6000

0.045 m³

22 pcs.

32×100×6000

0.0192 m³

52 pcs.

32×120×6000

0.023 m³

43 pcs.

32×150×6000

0.0288 m³

34 pcs.

32×180×6000

0.0346 m³

28 pcs.

32×200×6000

0.0384 m³

26 pcs.

32×250×6000

0.048 m³

20 pcs.

40×100×6000

0.024 m³

41 pcs.

40×120×6000

0.0288 m³

34 pcs.

40×150×6000

0.036 m³

27 pcs.

40×180×6000

0.0432 m³

23 pcs.

40×200×6000

0.048 m³

20 pcs.

40×250×6000

0.06 m³

16 pcs.

50×100×6000

0.03 m³

33 pcs.

50×120×6000

0.036 m³

27 pcs.

50×150×6000

0.045 m³

22 pcs.

50×180×6000

0.054 m³

18 pcs.

50×200×6000

0.06 m³

16 pcs.

50×250×6000

0.075 m³

13 pcs.

When purchasing lumber in small quantities, you can get confused with decimal places, namely rounding. An experienced seller will round the resulting number to the 3rd decimal place. An experienced buyer will round by GOST y - up to 0.000001 cubic meters and will remind the seller that up to 0.001 cubic meters. meters are rounded only batch of boards. The most common quantity - from several boards to 2-4 cubic meters - is not made up into a batch. In order not to offend either one or the other, round to 4 decimal places.

Then the resulting volume is multiplied by the cost of 1 m3 (cube). And this is where the number of decimal places can significantly affect costs.

1 edged board 32 mm thick, 200 mm wide and 6 m long(32Х200Х6000) has volume

  • 0.032 * 0.2 * 6 = 0.0384 cube

30 boards will have the volume

  • 0.0384 * 30 = 1.152 cubes

If the seller rounds the volume of 1 board to 0.04 cubic meters, he will additionally receive income:

  • 0.04 * 30 = 1.2 cubes
  • 1.2 - 1.152 = 0.048 cubic meters

Selling these 0.048 "air" cubes makes it easier on the buyer's wallet

Cost may vary depending on the type of wood. The grade decreases with a decrease in quality: the presence of wood defects and deviations from standard sizes. If batten has a curvature, is narrower or thinner than the standard by 3-5 mm, it will not be completely useful. Visual inspection of lumber is as important as precise definition volume.

Covered area of ​​edged board

To find out how much lumber you need, calculating the board in a cube will help you. The above formula is based on the definition of area

W * D = area.

Having calculated the covered area, all that remains is to multiply it by required thickness boards

W * D * 0.022; 0.025; 0.032; 0.04 m and so on.

All that remains is to see how many boards there are in one cube and determine required quantity. Just in case, print or memorize the table above.

You also need to take into account the future cutting of the material.Flooring and lining boards have an overlapping tongue and groove, which is taken into account in cubic capacity, but is not included in the covered area. A couple of boards are needed have in reserve .

Determining the volume of an unedged board

How many unedged boards in one cubic meter- Photo

Unedged board, that is, not having rectangular section along the entire length, is significantly cheaper and is widely used for the device various kinds rough sheathing, temporary fencing.

It is important to understand that the upper and lower surfaces of such a board must be sawn along the entire length. If one face is not sawn, then it is already croaker. The definition of cubic capacity of such lumber differs precisely in that it does not have the correct geometric shape.

Current standards establish several accounting methods unedged material, and it is practically impossible to calculate exactly how many boards are in 1 cube.

  1. Batch.
  2. Piece by piece.
  3. Sampling method.

In batch In this case, the boards are packed tightly into the bag correct form with further measurements. Further calculations are made using the standard formula for determining volume. Using different coefficients.

Piece measurement made using average measurements of height and width. The largest and smallest dimensions in meters are added and divided in half.

(Wmax + Wmin)/2 * (Bmax+ Bmin)/2 * D = volume, m3

Where, Sh- Width, IN- Height, D- Length

If it is visually clear that the wood is fresh and, accordingly, damp (humidity above 20%), then the seller is obliged to reduce overall volume multiplying the resulting cubic capacity by the coefficient:

  • 0,96 for coniferous species
  • 0,95 for deciduous.

Sampling method used to determine the volume of a large batch of unedged lumber. When loading, for example, into a truck vehicle, every fifth, tenth or twentieth board is measured using the second method.

The resulting volume is multiplied by five, ten, twenty. Loading continues until the next control board. It is also practiced to select control boards into a separate stack. The count is made after loading is completed.

Calculating the volume of timber: how much timber is in a cube?

Calculation of the amount of timber in one cube - Photo

A timber differs from an edged board only in that all its edges or two opposite ones have the same size: more than 0.05 m in thickness and 0.013 m in width. The formula for determining its volume is standard

R timber size

Volume of one beam

Timber in 1m3 (cube)

100×100×6000

0.06 m³

16 pcs.

100×150×6000

0.09 m³

11 pcs.

150×150×6000

0.135 m³

7 pcs.

100×180×6000

0.108 m³

9 pcs.

150×180×6000

0.162 m³

6 pcs.

180×180×6000

0.1944 m³

5 pieces.

100×200×6000

0.12 m³

8 pcs.

150×200×6000

0.18 m³

5.5 pcs.

180×200×6000

0.216 m³

4.5 pcs.

200×200×6000

0.24 m³

4 things.

250×200×6000

0.3 m³

3 pcs.

W * T * D = timber volume, m3.

To find out how much timber is in one cube

1 / (W * T * D) = amount of timber in 1 m3 (cube)

Where, Sh- Width, T- thickness, D- Length

Translation: 1mm = 0.001m, 10mm=0.01m, 100mm=0.1m

When purchasing timber, the volume must be determined individually, since the timber in the stack is laid with spacers. Measurements of such a stack and calculation of cubic capacity using the given formula invariably lead to a significant overestimation of the volume.

Length of 1 cube of timber (as well as any edged lumber) in meters is determined by dividing the unit by thickness and width. For example, you need to find out how much timber is in one cube - the edge is 180 mm.

1 / (0.18 * 0.18) = 30 meters 87 cm.

1 meter of such timber will have the following volume.

0.18 * 0.18 * 1 = 0.0324 m3.

These calculations may be needed when determining the costs of funds and materials.

Volume of construction logs: how many logs are in one cube?

How many logs are in one cube: calculation - Photo

Log structures are and will be relevant. Determining the volume of a round material depends on the method of its production.

  • Hand-barked construction logs.
  • Construction logs, rounded on special machines.

The trunk section for manual trimming has a weak shape truncated cone, therefore the formula for the volume of a cylinder is applied, but with some features.

3.14 * r 2 * L = log volume, m3

Here
r- averaged radius, calculated as (r 1 +r 2)/2, r 1 - radius from one end of the log, r 2 - radius from the other end of the log.
L- log length.
3,14 - constant "Pi".

A rounded log naturally has a cylindrical shape and is calculated using the above formula. But here the radius is measured at any end once. Determining the number of logs in 1 cube is determined similarly to timber.

1 / (3.14 * r 2 * L) = Number of logs in 1m3 (cube)

Blanks for construction logs are measured in the same way.

The radius (diameter divided in half) is measured without taking into account the thickness of the tree bark. In practice, manual calculations are not carried out. They use special tables compiled in a cubic book. They are also available in electronic form.

In conclusion, it should be noted that lumber for critical work, standard in size, wood species and moisture content, should be purchased at large sites. Small producers, as a rule, are not allowed there due to the lack of appropriate control over the quality of their products.

This article will detail information that will allow you to most correctly calculate the amount of lumber per cubic meter wooden board. Today, edged and unedged boards are the most popular lumber. Manufacturers produce numerous variations of this material in sizes from 16x8 mm to 250x100 mm.

In this case, the width of the board is always at least twice the thickness; if the aspect ratio changes, the material is already called timber. It is customary to measure edged boards in cubic meters, so to determine the cost of work you need to learn how to determine the weight of a cube of edged boards. Fortunately, there are ready-made tables and formulas that will allow you to quickly cope with this task.

As a rule, most novice builders do not think about the question “how much is a cubic meter of boards?” » , but simply use the table below. However, we strongly recommend that you learn how to calculate cubic capacity yourself; this will greatly simplify your work, and only in this case can you consider yourself a professional.

If you compare an edged board with an unedged or one-sided edged one, on the surface of the first there are no places where there used to be bark; this parameter is called wane. A small amount of wane is usually allowed, but the less the better. So, in terms of geometry, such a board is guaranteed to be a rectangular parallelepiped. This figure has three parameters: thickness, width, length, which are usually expressed by the letters a, b, l. These indicators are enough to know how to calculate the cubic capacity of a board in a few seconds.

It is important to know that there is an official standard according to which boards can only be produced with parameter “a” equal to 22, 25, 30, 40, 50, 100 mm. There are also other lumbers that are made from others by planing or sawing. Their width varies from 100 to 250 mm, pitch 50 mm. The length of such boards can be 3, 4, 6 m.

Formula for calculating cubic capacity

Thickness * Width * Length

(a*b*l)

Once you know all the values, you can quickly answer the question of how to calculate the cubic capacity of the board. Before making calculations, you need to convert all values ​​to meters. For example, we have a board measuring 25 mm x 10 cm x 4 m, when converted to meters it turns out 0.025, 0.1, 4. Now we multiply these parameters:

0.025 * 0.1 * 4 = 0.01

Now we divide the unit by the result obtained and find out how to calculate the cube of boards, or rather the number of boards in a cube of wood.

1 / 0.01 = 100

Thus, a cubic meter will contain 100 boards of the specified sizes. Now you can easily answer the question of how to calculate the cube of boards, but you need to learn how to calculate the amount of lumber needed to complete the work.

What is an inch board and how to calculate its cubic capacity

Inch gauge is just the name of one of the board sizes; there are also forties, fives, and beams, this allows the builder to quickly figure out which board we are talking about. To find out how many inch boards are in a cube, you need to make calculations that are already familiar to us, as a result of which you will get 66 pieces for a board width of 10 cm, and 44 pieces for a board width of 15 cm. As a rule, one cubic meter is enough to cover an area of ​​40 square meters.

As already mentioned, there is also an unedged board, which is obtained as a result of longitudinal sawing of logs without processing on the sides. So finding the answer to the question of how many boards are in a cube of unedged boards is usually somewhat more difficult than in the first case. The point is that unedged lumber Only the width and length are accurately indicated, but the width may vary. Much depends on what part of the tree a particular board is cut from. If you are wondering how to calculate the cubic capacity of an unedged board, you need to first think about the task at hand.

For example, you may need to sheathe a building, in which case you will first find out the finishing area and multiply it by the thickness of the sheathing, this will allow you to calculate the required volume of material. Let's describe this situation in numbers:

How many unedged boards 25 mm thick might be needed for the cladding of a rectangular building 10 * 5 meters and 3 meters high?

We calculate the entire area for finishing; to do this, we multiply the perimeter of the building by its height: (10 + 10 + 5 + 5) * 3 = 90 square meters. Now we multiply the resulting value by the thickness of the material: 90 * 0.025 (convert millimeters to meters) = 2.25 cubic meters.

As you can see, in this case the width of an individual cladding element practically does not matter, since this does not affect the overall cubic capacity. However, sometimes it may still be useful for you to know the average dimensions of the board, which will allow you to approximately find out how many unedged boards are in a cube. These approximate data are shown in the table.