Calculation of a tree in cubes. How to calculate the cubature of an unedged board
When carrying out construction work on the construction of a residential building, a specialist needs to perform a large number of various tasks, some of which are: drawing up and calculating the estimated cost before 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, is very important for a specialist who is engaged in the construction of a residential building and wants to do the job as efficiently as possible and quickly in time.
Buyer's club: existing types of boards
To calculate exactly how many pieces of a board are in a cube, you will need to know not only what exactly the cube of the board means, but it is worth understanding the important point that there are different types of boards and what is possible to purchase on the modern market to perform a variety of construction work. 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.
The non-grooved type of lumber is: timber, various edged boards, as well as unedged boards (they are an exception when calculating cubic capacity, because this process is a little different). Grooved types (which have special grooves for the joint) include: modern lining, blockhouse, flooring material, as well as imitation of natural timber. When you choose to buy a tongue-and-groove type of building material, then you need to pay attention to the fact that when making a calculation, only the working width of the board without a spike is used. If we talk about a blockhouse (imitation of a log), then when calculating the cubic capacity, only the thickness at its highest point is taken.
How many boards are in 1 cube: performing a calculation
Any person, since his school days, understands how the calculation of cubic capacity is made. For this procedure, it is necessary to calculate quantities such as: length, width and height. A similar principle is also used to calculate the cubature of 1 board. It is recommended that when performing such calculations, convert all available values in meters. Cubic capacity of 1 board, which has a section of 150x20 mm. and a length of 6 m., is calculated as follows: 0.15 is multiplied by 0.02 and by 6, so that the cubic capacity of this board will be 0.018 cubic meters.
Apply the volume formula V= L*h*b (where L is the length, h is the height, b is the width).
L=6.0; h=0.02; b=0.15.
Thus, V \u003d 6.0 * 0.02 * 0.15 \u003d 0.018 m 3.
To determine how many boards are in one cube: 1 m 3 is divided by the cubic capacity (the volume of one board).
1 m 3 / V = N pcs.
1 m 3 / 0.018 m 3 \u003d 55.55 pcs.
Thus, the number of boards in one cube is 55.5 pieces.
It is quite easy to find out the cost of a certain type of board when its volume values \u200b\u200bare known: 0.018 is multiplied by the price of 1 cubic meter. When 1 cube of a certain type of board has, for example, a cost of 5500 rubles, then the cost will be 99 rubles. At this point in the calculation, there is some trick of sellers and managers in hardware stores, because the cubic capacity of the material is rounded up 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 for various boards for construction, which make up a nominal length of 6 meters, in fact, the length is 6.1 - 6.2 m, which is not taken into account when selling this building material. This also applies to the acquisition of a significant number of boards. This is quite clearly visible if, for example, a 150x20 mm board is used. The number of boards in a cube is a value of 55.5 pieces. But, in a cube, 55 pieces are considered, which, when calculating, 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 be 1% of the real price. For example, 5500 instead of 4995 rubles.
To calculate the cubature for a non-cut-off type of board, slightly different methods are used. When it comes to buying 1 board, then measuring its thickness, as well as the total length, is performed in the same way as when choosing a cut building material. In this case, the width for calculations is taken as an average - between a large value and a small one.
For example, when at the end the width of the board 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 such boards for construction, then it will be necessary to decompose them so that the wide one does not differ from the narrow one, more than 10 cm. The main length of this material in the unfolded stack should be approximately the same. After that, using an ordinary tape measure, an accurate measurement of the height of the entire stack of boards is made, the width is measured (approximately in the middle). The result obtained will then need to be multiplied by a special coefficient ranging from 0.07 to 0.09, in direct proportion to the existing air gap.
How many boards in 1 cube: special tables
To calculate exactly what number of boards of a certain width, length in 1 cubic meter, various tables are used. Below are several such specialized tables, which indicate the cubature of the common and popular types of this material today. It is possible to calculate the volume of various boards having different sizes, for example, material for erecting a fence on your site, using the available formula, which is presented above.
Table of the number of edged boards in 1 cubic meter
| Board size | The volume of the 1st board (m 3) | The number of boards in 1m 3 (pcs.) | The number of square meters in 1m 2 |
|---|---|---|---|
| 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 m 3 | 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 m 3 | 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 1 piece (m³) | The number 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 number of unedged boards in 1 cubic meter
Specify dimensions in millimeters
W- board width
H- board thickness
L- board length
Initial data
N- quantity in pieces
E- quantity in cubic meters
Many, when building a house or a bath, are faced with the need to calculate how much lumber is required for work. Determining how much board or timber you need is simple. But the price of lumber is usually indicated per cubic meter, and in this case it will be more convenient to use a special program for calculations. With the help of our website, knowing the length, width and thickness of the board, as well as their number in pieces, you can calculate how many cubic meters of lumber you will need and how much one cubic meter or one board will cost.
Scope of application
Lumber is so called because it is obtained by sawing the trunk of a tree. Lumber is used for construction, furniture manufacturing, various containers and other products. Today, this type of building materials is the most popular. The wood from which sawn timber is made is an excellent heat-insulating material, maintains a stable humidity and does not require special treatment and care, which makes it especially convenient.Types of lumber
Timber includes timber, edged boards, unedged boards, building slats. The beam is a log processed from all sides. In the cut, it has a square or rectangular section. The timber is most widely used in the construction of houses, baths and floor structures.The edged board is a versatile lumber that is actively used both in construction work outside the building and in the design of the interior space. Edged board in cross section is an elongated rectangle. An unedged board differs from an edged board in that its edges are not cut off, so that a layer of the bark of the tree from which this board was cut remains visible. A building rail or bar is a bar with a smaller section than a regular one and is widely used in construction.
Lumber is classified according to the type of wood from which it is made. They are made from coniferous trees such as pine, spruce and larch. And from hardwoods such as oak and beech, birch, aspen.
Lumber is also distinguished by moisture content. They are divided into raw with a moisture level of more than 22 percent and dry with a moisture content below 22 percent. The former are used for construction work, and the latter for the manufacture of furniture.
There are also several varieties of lumber. The choice of grade depends on the application. So, for furniture, materials of the highest grade are used. For joinery and moldings, grade 1 lumber is suitable, and grade 2 and 3 are used exclusively as a building board. Lumber, if not used for a long time, must be protected from moisture. This can lead to their deterioration. It is not recommended to store lumber stacked on top of each other. There must be spacers between the layers of beams or boards.
Whether you are a carpenter or simply purchasing the required volume of lumber cubic capacity based on calculations, the ability to correctly calculate the volume of lumber will help in the correct preparation of estimates and save you from additional financial costs.
An additional need to learn how to count the volume of lumber also comes from the fact that this is practically the only type of building material that is sold not by the piece or by weight, but in cubic meters.
The quality, weight and cost of lumber is affected by many factors, the surface of the wood (the presence of chips, grinding, firing, cracks, etc.), humidity and the sawing method, which can be tangential and radial.
Types of lumber
There are many types of lumber on the market today, which differ in the method of manufacture and performance characteristics:
Of course, it is easier when lumber is packaged in packages with exact indications of price and volume, but this is quite rare and is done by companies that produce large quantities of products at high prices. The price tag for a board from private traders is usually lower, but boards are usually delivered in bulk without clear packaging. It is important to always buy a batch of a slightly larger cubic capacity than necessary, since during the construction work, most likely, it will be found that there is not enough lumber, and some of the products in the batch are defective.
Calculations for one cube of the board will vary depending on the type of wood, as well as the level of processing of lumber. Unedged and edged boards are calculated using different formulas. As for the species, the easiest way is to count one cube of softwood: the width, length and thickness of one board are measured and multiplied, and then the resulting figures are multiplied by the amount of identical lumber.
An unedged board is obtained by sawing the logs longitudinally without additional processing of the boards on the sides. Such lumber is cheaper than edged boards, but their disadvantage lies in the complex calculation of the product cube. Unlike edged boards, it will not be possible to calculate the total volume of lumber based on the dimensions of one board, since depending on the board its width varies, only the length and width remain identical. Differences in width are due to the fact that unedged boards are cut from different parts of the log.
1 way
In unedged boards, there is often a disproportion between the thickness and width of the board at its different ends, therefore, for correct calculations, it is necessary to determine the minimum and maximum values \u200b\u200bof the width and thickness of the board. Divide the results by 2. The formula itself will look like this: (a1+a2)/2*(b1+b2)/2*c. If necessary, a calculator may be useful in correct calculations. The only drawback of this method can be attributed to the high time costs, tk. due to the fact that the boards are different from each other, you will have to measure each piece of lumber separately.
2 way
It is much easier to make calculations when it is necessary to sheathe some part of the building with a board, whether it be a floor or a wall. To do this, we take the area that needs to be finished with a board, and multiply it by the thickness of the sheathing material - the resulting number will be the required volume of lumber. For a better understanding, let's give an example: for facing the wall of a building with parameters 8 * 4 with a height of 4 meters, we use a board 20 mm thick.
We calculate the area of the wall, namely: (8+8+4+4)*4=96 sq.m. Next, we multiply the resulting result with the thickness of the unedged board and we get: 95 * 0.020 = 1.9 kb.m. The width of the board does not matter, it has no effect on the calculations. But at the same time, for construction work, it will not be superfluous to find out the average values of the board, depending on its length. You can see the average data in the table below.
Edged board is the most popular type of lumber, which is slightly more expensive than edged board, because. wood is processed from all sides. To obtain it, the log is sawn longitudinally into boards, and then the side faces are processed, the resulting material has a rectangular shape. The advantages of this sawn material include greater durability, since harmful microorganisms are removed along with the bark, as well as improved docking with other sawn materials due to the cleaned sides.
Edged boards undergo additional drying and many processing operations, due to which not only their performance characteristics increase, but also the price. The price is also affected by the type of wood and the type of lumber.
Since the edged boards are identical in size, the calculation of the cubature will be carried out according to a simple formula: V = l * h * a, where l, h, a are the length, height and width, respectively, and V is the volume.
In construction, a beam with a square section is most often used, that is, with an aspect ratio of 100 * 100 mm. To calculate the cubic capacity of one beam, it is necessary to multiply the product of its width and height by the length of the beam. For example, consider the case when it is necessary to purchase 30 units of timber with a section of 100 * 100 mm and a length of 9 meters. To do this, multiply the width by the height, and multiply the resulting value by the length of one beam. In general, the calculations will look like this: 0.10 * 0.10 * 9 \u003d 0.09 m3 - this will be the cubic capacity of one bar. Now we multiply this value by the amount of timber needed, it turns out: 0.09 * 30 \u003d 2.7 m3.
If there are grooves in the beam, then this often does not affect the cubic capacity in any way, since the products in the lumber batch are tightly interconnected.
General conclusions
Calculating the required number of cubic meters of lumber is not at all difficult if the formulas for calculations are known. After measurements, it will become much easier for you to calculate the required number of cubic meters and quickly find out its cost.
Before starting construction work, any owner of land real estate on which it is planned to build a residential building wants to know how much material will be needed. Financial costs will depend on the volume of building materials and their type, which can be difficult for some owners to bear at a time, and they are forced to purchase various materials in stages. In low-rise housing construction, wood and products made from it make up a large part. Therefore, it is desirable to know how many boards will be needed and how much they will cost.
Thanks to the accurate calculation of the number of boards, you can save a lot and not be deceived.
Characteristics of wood materials
Currently, the building materials market offers various wood materials at a price in rubles per cubic meter. If how many boards are needed for arranging the floor, I would like to know their price. In addition, construction requires different types of wood products that differ in shape, size and price. Therefore, before studying the question of how many boards are in a cube, it is necessary to study the range of offered wooden products. A future homeowner, in order to build his future home, may need:
- profiled beam of square or rectangular section, the smaller side of which exceeds 100.0 millimeters;
- bar whose size is:
- ü 16.0 ... 75.0 millimeters for products sawn from softwood;
- ü 19.0 ... 100.0 millimeters for hardwood.
- edged, processed in three planes, a board with a thickness of more than 20.0 millimeters, the width of which varies widely;
- unedged board, having two sawn sides, the side edges of which are unfinished;
- slab, which is half sawn timber from round timber ;
- terrace board http://www.ecowood.com.ua/catalog/terrasnaya-doska for flooring.
The greatest financial costs will be required for the purchase of the first three types of lumber, so the solution to the question of how much timber, bar or boards in a cube is most relevant.
Accurate calculation of the amount of lumber in one cubic meter (1 m³)
The task of determining how many boards in a cube is at the level of arithmetic tasks solved in the first grade. The initial data for calculating how many beams, bars or boards in a cube are:
- z is the number of boards (pieces);
- h is the thickness of the board (the smaller section of the bar) in meters;
- b - lumber width (meters)
- L is the length of a lumber unit (meters).
The volume (V) of one product (board, beam or bar) is determined by the ratio:
V = h × b × L, cubic meters,
and the number of lumber units in a cubic meter is defined as:
Of course, this calculation is quite approximate - it does not take into account the gap between individual products, the type of board processing (grooved, planed), length allowance and other rather specific little things. According to the above formulas, it is impossible to calculate the number of unedged boards or slabs. However, to determine how much to take with you to the lumberyard, and whether an extra thousand rubles will interfere there, accuracy is enough. More accurate results can be obtained using the tabular calculation method.
Tabular determination of the amount of lumber
To determine how many boards are in 1 cube, the calculation table contains columns and lines. The lines indicate the cross section of the lumber, and the columns (rows) show the calculated values of the volume of one board and the number of boards in one cubic meter. In principle, these values were obtained by calculation, but taking into account correction factors. Consider a clipping (part) of the table how many boards are in 1 cube. In this case, the symbols correspond to those used in the above formulas.
Table for calculating the number of boards in 1 cube
| Board size | Number of pieces in 1 m³ |
| 25 x 100 x 6000 | 66 |
| 25 x 150 x 6000 | 44 |
| 25 x 200 x 6000 | 33 |
| 30 x 100 x 6000 | 55 |
| 30 x 150 x 6000 | 37 |
| 30 x 200 x 6000 | 27 |
| 40 x 100 x 6000 | 41 |
| 40 x 150 x 6000 | 27 |
| 40 x 200 x 6000 | 20 |
| 50 x 100 x 6000 | 33 |
| 50 x 150 x 6000 | 22 |
| 50 x 200 x 6000 | 16 |
Table for calculating the amount of timber in 1 cube
| Beam size | Number of pieces in 1 m³ |
| 25 x 50 x 3000 | 266 |
| 30 x 40 x 3000 | 277 |
| 30 x 50 x 3000 | 222 |
| 40 x 40 x 3000 | 208 |
| 50 x 50 x 3000 | 133 |
| 50 x 50 x 6000 | 66 |
| 50 x 70 x 3000 | 95 |
| 100 x 100 x 6000 | 16 |
| 100 x 150 x 6000 | 11 |
| 100 x 200 x 6000 | 8 |
| 150 x 150 x 6000 | 7 |
| 150 x 200 x 6000 | 5 |
| 200 x 200 x 6000 | 4 |
Calculation table for non-standard boards and timber
| Beam non-standard | Number of pieces in 1 m³ |
| 90 x 90 x 6000 | 20 |
| 90 x 140 x 6000 | 13 |
| 90 x 190 x 6000 | 9 |
| 100 x 250 x 6000 | 6 |
| 100 x 300 x 6000 | 5 |
| 140 x 140 x 6000 | 8 |
| 140 x 190 x 6000 | 6 |
| 150 x 250 x 6000 | 4 |
| 150 x 300 x 6000 | 3 |
| 190 x 190 x 6000 | 4 |
| 200 x 250 x 6000 | 3 |
| 200 x 300 x 6000 | 2 |
| 250 x 300 x 6000 | 2 |
| 300 x 300 x 6000 | 1 |
| Board non-standard | Number of pieces in 1 m³ |
| 22 x 90 x 6000 | 84 |
| 22 x 140 x 6000 | 54 |
| 22 x 190 x 6000 | 39 |
| 25 x 250 x 6000 | 26 |
| 25 x 300 x 6000 | 22 |
| 30 x 250 x 6000 | 22 |
| 30 x 300 x 6000 | 18 |
| 35 x 90 x 6000 | 52 |
| 35 x 140 x 6000 | 34 |
| 35 x 190 x 6000 | 25 |
| 40 x 250 x 6000 | 16 |
| 40 x 300 x 6000 | 13 |
| 45 x 90 x 6000 | 41 |
| 45 x 140 x 6000 | 26 |
| 45 x 190 x 6000 | 19 |
| 50 x 250 x 6000 | 13 |
| 50 x 300 x 6000 | 11 |
| 60 x 100 x 6000 | 27 |
| 60 x 150 x 6000 | 18 |
| 60 x 200 x 6000 | 13 |
| 60 x 250 x 6000 | 11 |
| 60 x 300 x 6000 | 9 |
| 70 x 100 x 6000 | 23 |
| 70 x 150 x 6000 | 15 |
| 70 x 200 x 6000 | 11 |
| 70 x 250 x 6000 | 9 |
| 70 x 300 x 6000 | 7 |
| 80 x 100 x 6000 | 20 |
| 80 x 150 x 6000 | 13 |
| 80 x 200 x 6000 | 10 |
| 80 x 250 x 6000 | 8 |
| 80 x 300 x 6000 | 6 |
Lumber suppliers measure it in cubic meters (m 3) and the price, respectively, is indicated for 1 m 3. It will not be difficult to calculate the lumber in a cube (cubic capacity), find out the number of boards, knowing their dimensions, using this calculator.
Specify the dimensions of one board or beam in millimeters:
W- the width of the board or timber, is chosen by you based on the use of lumber. According to GOST 24454-80, the width of lumber can be from 75 to 275 mm. The optimal width value should be selected taking into account SP 64.13330.2011 (Updated edition of SNiP II-25-80).
H- the thickness of the board, an important parameter of the material section. Thickness, according to the above standard, can be from 16 to 250 mm. Take into account SP 64.13330.2011 "Wooden structures" to establish the value H.
Lumber is considered to be timber with a thickness and width of 100 mm or more, the ratio H/W at least 1/2.
L- the length of the board depends on the length of the original logs (i.e. if a workpiece 4000 mm long is sawn, then the board will be of the same size). Meaning L can vary from 1000 to 6000 mm.
E- quantity in cubic meters - this item must be selected if you want to know how many boards of a certain size will be obtained from a given number of cubic meters of wood.
Also indicate the cost of 1 meter of cubic lumber in your region.
The results of the online lumber calculator
If you have specified a parameter N(i.e. how many pieces), the calculator will calculate how much wood needs to be sawn to obtain a given number of boards. A If the parameter was specified E(i.e. volume) it will be calculated how many pieces of boards can be obtained from such a volume of wood. It will also calculate how much volume one board or beam occupies (with parameters W, H, L chosen by you) and how many pieces of boards (beams) of this size are in one cubic meter. If you have quoted prices in the relevant paragraph, the total cost of lumber, their volume and quantity will be calculated. This information will be helpful in budgeting.
Upon careful inspection, a certain amount of lumber may be rejected due to defects. Therefore, so that at the final stage of construction it is not necessary to buy a piece of board in addition, it is necessary to make a small margin in excess of the calculated amount (approximately 10-20%).