How to count a cube of edged boards. Cube of an unedged board: volume of a rectangular product, calculation of unedged material for obtaining trim and when purchasing

Before purchasing floorboards, you need to calculate how many cubes of lumber are needed to construct a certain structure. Wherein exact calculation can be done using a regular calculator, knowing the area of the room and the thickness of the board. Such skills will be useful to you not only in order to calculate the volume of lumber for flooring, but also if you decide to build a house, because wood products are used to construct various structures.

Since the price of all lumber when sold is charged per cubic meter, it is important to be able to calculate the need for this particular unit of measurement. This way, not only the number of boards is calculated, but also other lumber, for example, timber, slats, etc. The thing is that products with the same cross-section may differ in length. Therefore, after determining the volume, you can understand how many floorboards there will be in one cube.

It is important to know: when purchasing boards made from valuable wood, products are sold individually. The thing is that the price of such coatings is too high, and when calculating in cubes there is a small error.

When calculating, it is better to use a regular calculator. This way you can get a more accurate result and take into account all the nuances of the future design of the house. Although if you need to find out how many cubes of boards, for example, 50 mm thick, will be needed to construct a floor, then you can use online calculator ohm He can perform such a simple calculation correctly. However, it is always a good idea to be able to count the amount of lumber by hand.

When building a house or laying a floor, the calculations are carried out in the same order:

First you need to calculate overall volume lumber in cubes. Knowing the moisture content of the wood, you can determine the weight of the entire material. This will help you decide which product delivery method to choose.

Advice: when ordering a carrier, it is better to indicate an inflated weight (10-15% more). This way you won’t have problems with the load, because the wood moisture content stated by the manufacturer may be a little more or less.

Next, knowing the dimensions of the boards, you need to calculate the volume of one element. Then you can find out how many products will be in the cube. Multiplying this number by the number of cubes, you get total number floorboards for your floor design.

However, such a simple calculation is applicable for edged elements, because they are processed on all sides and when they are stacked, there are practically no gaps left. To calculate how many cubes of unedged boards are needed for a floor, you will have to use a correction factor, because due to the untreated sides of the product, too many gaps will remain when stacked.

Calculation example

Let’s assume that in your house you want to cover a room with dimensions of 5x6 m with a 50 mm thick floorboard. We calculate the volume of lumber and the number of products in the following sequence:

Find the area of the room: 6x5=30 m².
Since we decided to use a board with a thickness of 50 mm or 0.05 m, the lag step can be 1 meter.
Knowing the thickness of the element and the area of the room, we obtain the volume of lumber: 30 m² x 0.05 m = 1.5 m³.
Now using a calculator, you can calculate how many floorboards you will need. To do this, knowing the dimensions of the floorboard, we calculate its volume: 2m x 0.05 m x 0.13 m = 0.013 m³. Now we divide the total volume of lumber by the resulting number for an element with a thickness of 50 mm: 1.5: 0.013 = 115 boards.

Thus, using a regular calculator, you can calculate the need for other lumber for building a house: paneling, timber, slats.

Whether you are a carpenter or simply purchasing the required cubic volume of lumber based on calculations, the ability to correctly calculate the volume of lumber will help in correct drafting estimates and will save you from additional financial expenses.

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 individually or by weight, but in cubic meters.

The quality, weight and cost of lumber are influenced by many factors, the surface of the wood (presence of chips, grinding, firing, cracks, etc.), humidity and cutting method, which can be tangential or radial.

Types of lumber

There are many types of lumber on the market today, which differ in their manufacturing method and performance characteristics:

Of course, it’s easier when the lumber is packaged in packages with exact indications of price and volume, but this is quite rare and this is done by companies that produce large quantities of products at high prices. The price tag for a board from private sellers is usually lower, but the boards are usually delivered en masse without clear packaging. It is important to always buy a batch of slightly larger cubic capacity than necessary, since in the process construction work, most likely, it will be discovered that there is not enough lumber, and some of the products in the batch are defective.

Calculations for one cube of board will vary depending on the type of wood, as well as the level of processing of the lumber. Unedged and edged boards are calculated according to different formulas. As for the species, the easiest way is to count one cube of wood from coniferous species: the width, length and thickness of one board are measured and multiplied, and then the resulting indicators are multiplied by the amount of identical lumber.

An unedged board is obtained by longitudinally cutting logs 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 cube of products. Unlike edged boards, it is not possible to calculate the total volume of lumber based on the dimensions of one board, since its width varies depending on the board; only the length and width remain identical. Differences in width occur due to the fact that unedged boards are cut from different sections of the log.

1 way

In unedged boards there is often a disproportion between the thickness and width of the board on its different ends, therefore, for correct calculations it is necessary to determine the minimum and maximum values for the width and thickness of the board. We divide the resulting results by 2. The formula itself will look like this: (a1+a2)/2*(b1+b2)/2*c. If necessary, a calculator can be useful for correct calculations. The only drawback of this method is the high time consumption, because Due to the fact that the boards are very different, you will have to measure each unit of lumber separately.

Method 2

It is much easier to make calculations when it is necessary to cover some part of the building with boards, be it a floor or a wall. To do this, take the area that needs to be finished with boards 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: to cover 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 Not edged boards and we get: 95*0.020=1.9 kb.m. The width of the board does not matter; it does not have any 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 the wood is processed from all sides. To obtain it, the log is sawn lengthwise into boards, and then processed side faces, the resulting material has rectangular shape. The advantages of this sawmill material include greater durability, since harmful microorganisms are removed along with the bark, as well as improved joining with other sawmill materials due to the cleaned sides.

Edged boards undergo additional drying and many processing operations, due to which not only their performance characteristics, but also the price. The price is also affected by the type of wood and type of lumber.

Since the edged boards are identical in size, the cubic capacity will be calculated using a simple formula: V=l*h*a, where l,h,a is length, height and width respectively, and V is volume.

In construction, timber with square section, that is, with an aspect ratio of 100 * 100 mm. To calculate the cubic capacity of one beam, you need 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 cross-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=0.09 m3 - this will be the cubic capacity of one beam. Now we multiply this value by the amount of timber required, it turns out: 0.09*30=2.7 m3.

If there are grooves in the timber, this often does not in any way affect the cubic capacity, since the products in a batch of lumber are tightly connected to each other.

General conclusions

Calculate required amount 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.

Construction of a private house, cottage or any other building requires drawing up an estimate. It indicates the quantity of building materials and their cost. There are several methods that allow you to carry out the corresponding calculations. The board is a common material that is used everywhere. In order to determine how many boards are in a cube, you need to familiarize yourself with the calculation options and the nuances of this process.

How many boards in a cube: types of lumber and features of their calculation

The boards used in the construction of houses and other structures differ according to several criteria. First of all, the material from which they are made is taken into account. The technical characteristics of the product depend on the type of wood. Depending on the production method, these building elements are divided into types:

edged;

unedged.

The first of them are of the highest grade and have correct form, since all their faces can be processed. In turn, unedged products are most often used to organize rough flooring, etc. The peculiarity of this material is that its side edges are not processed, they contain bark and have natural shape. This simplifies the production of unedged boards and affects its cost.

In order to answer the question of how to calculate the cube of a board, you must first decide which material will be used during the construction process. For example, it is easier to calculate the cubic capacity and cost of a trimmed part, since it has a geometrically correct shape.

For unedged products there are constant values, which are arithmetic averages. The table of boards in a cube is not always suitable in this case, since it takes into account the rounding of even edged lumber.

It is worth mentioning separately building materials For finishing. This group includes lining, block house and products that imitate timber. The design of these finishing parts includes special ribs and grooves necessary for tightly connecting individual elements to each other.

Helpful information! When calculating finished lumber, you need to focus only on the dimensions of the main part of the board. So the size lock connections is not taken into account, only numeric values product body.

Regardless of what type of material is used, a single formula is used to calculate the number of boards in a cube. The exception in this case is unedged products. Their calculation has its own characteristics, because such parts do not have all the faces necessary for calculation.

Formula for the volume of a cube: how many edged boards are in 1 cubic meter

Cube is geometric figure, which consists of 6 equal faces. Each of them is a square. To determine the volume of a given figure, you need to multiply 3 indicators together:

length;

width;
height.

In order to find out how many boards are in 1 cube, you need to multiply several values. The result is a mathematical expression that looks like this:

V = h x b x L, where:

h – height of the edged product (m);

b – element width (m);

L – length of one part (m).

Using this formula, you can determine the volume of 1 element. It is important to remember that when making calculations, it is necessary to convert the millimeter values of the product into meters. For example, in order to determine how many 25x150x6000 boards are in a cube, you will need to convert the numbers by multiplying them by 0.001. The finished mathematical expression after this transformation will look like this:

V = 0.025 x 0.15 x 6

As a result, it turns out that the volume of one wooden part equal to 0.0225 cubic meters(m³). Next, it remains to calculate how many pieces of edged boards are contained in 1 cubic meter. For this there is simple formula. It involves dividing 1 cubic meter by the volume of 1 board, which was obtained using the previous mathematical expression. Let's look at the calculation using an example:

1 m³ / 0.0225 m³ = 44.4

Thus, 1 cubic meter contains approximately (if rounded) 44 boards. After this, you can independently determine the amount of material needed for construction. specific design. And also at this stage you can draw up a general estimate indicating the price of edged boards per cubic meter.

To calculate the cost of 1 edged board, a mathematical expression is used, which implies multiplying the volume of 1 part by the price per cubic meter. Let's look at an example:

0.0225 x 8200 rub. = 184.5 rub.

The calculation showed that the cost of 1 product of the edged variety will be approximately 184 rubles. If the cost of 1 part is known, but you need to calculate the price of a cube of a board, you need to do the opposite manipulation. In this situation, you will need to divide the price for 1 product (184.5) by its volume (0.0225).

Note! Sometimes, especially when purchasing a small batch of boards, confusion occurs with decimal places. In some cases, lumber sellers specifically post prices calculated by rounding to the 3rd number. However, according to the law, this value is only suitable for large batches boards When purchasing several products, it is recommended to round according to GOST, namely to 0.000001 m³.

When calculating the amount of boards and the cost of lumber per cubic meter, it is advisable to take into account unplanned losses, which very often occur during construction. Therefore, it is recommended to buy edged products with a small supply (several pieces).

How many boards in a cube: calculation of unedged lumber

Calculating the cubic capacity of an unedged board has some nuances, since its shape is not correct. There is no such material rectangular section along its entire length, so it is used to organize temporary structures. The lower and upper surfaces of an unedged board must be processed along its entire length. Otherwise, this product is a side part of a log (slab).

To find the volume unedged lumber in 1 cubic meter, as well as its quantity, there are several methods. It’s worth noting right away that determining how many boards are in one cube is quite difficult if we are talking about incorrect geometric shapes. Therefore, the initial numbers obtained when calculating unedged parts will represent an approximate indicator.

Let's consider what methods are used to calculate the cubic capacity and quantity of unedged lumber:

batch;
piece;
sampling method.

In the first case, you will need to load the lumber into a bag, which must have the correct shape. After laying it is necessary to measure the necessary indicators. Next, the standard procedure for determining the volume is carried out using the values obtained from taking measurements. This method is most common for products that do not have clear edges. For example, you can use it to calculate the cubes of a 25x150x6000 board in a cube (unedged).

It is worth noting that in a mathematical expression of this type, a special coefficient is used (for width), which represents the average arithmetic number. Although this option is not fast, it allows you to answer the question of how to calculate the cube of the board.

The piece method involves the use of numbers corresponding to the average arithmetic values height and width of the edged product. These values are calculated in meters.

In order to find the arithmetic average, it is necessary to measure the board. The minimum width (at the narrowest point) and the maximum are measured. Next, both indicators are added and divided in half. After this, the same height manipulation is performed. The numbers obtained during the calculation must be multiplied by each other and by the length of the product.

Let's look at what this looks like as a mathematical expression:

(b max + b min) / 2 x (h max + h min) / 2 x L = V

Using this formula, it will not be difficult to determine the volume of 1 unedged element and answer the question of how to calculate the cubic capacity of the part. After obtaining this value, you can calculate and total boards per cubic meter. For such a calculation, you will need to use a formula similar to that for a trimmed part (the cubic meter is divided by the volume of the product).

Helpful information ! When purchasing raw boards, you need to be careful. Sellers should use a factor that reduces the total volume to account for future shrinkage. To calculate wet coniferous products, 1 cubic meter must be multiplied by the number 0.96. In turn, the coefficient for hardwood is 0.95.

The last method that allows you to determine the volume of lumber and its quantity in 1 cubic meter is the sampling method. It is used when calculating large quantities of wooden building materials. The essence of this method is that several boards are selected from the total mass. Then the parts are measured and calculated according to the piecemeal method. The resulting numbers are multiplied by the total number of parts in the batch.

How many boards in a cube 50x150x6000 in a cube: calculation

As an example we can take unedged product with dimensions 50 by 150 by 6000 mm. First, convert millimeters to meters. Some people don't know how many millimeters are in 1 meter. To convert, you will need to multiply the required number in mm by a factor of 0.001. In its finished form (with substituted values), the formula will look like this:

(0.155 + 0.145) / 2 x (0.055 + 0.045) / 2 x 6 = V

Related article:

Main selection criteria finished product. Comparison of prices from well-known manufacturers.

After addition and division by 2, we obtain the arithmetic average of the width and height of the unedged part. Thus, the formula takes on a more understandable, standard form:

0.15 x 0.05 x 6 = 0.045

This is how a calculation is made, the result of which is to find the volume of 1 board. To determine the number of products in 1 cubic meter, the same formula is used as in the case of a trimmed analogue.

If necessary, you can calculate the area of one board. Most often this is required when the manufacturer indicates the price per square meter, and not per cubic meter. The area formula involves multiplying the width of a part by its length. In this case, it is important not to make a mistake and remember to convert millimeters to meters.

In order to determine the cost, the same formula is used as in the case of edged lumber. You just need to multiply the volume of 1 part by the value that corresponds to the total price of the cube. This is how the calculation of cubes in a cube of a 50x150x6000 board is performed.

Calculating the board using an online calculator

Perhaps the easiest way (along with the lumber cubature table) to determine the exact value of volume and quantity wooden planks– online calculator. It is a program with specified algorithms that allow you to calculate all the necessary values of lumber. This method makes it possible to calculate not only edged boards, but also other types of these products.

Note! In order to avoid the possibility of errors when calculating material using an online calculator, you should immediately indicate for which board the measurement is being used.

The process itself is quite simple. First, you need to find a calculator on one of the specialized sites using the search bar of your browser. Next, you will need to enter the necessary indicators in the appropriate cells. The cube board calculator will do the calculations on its own.

This method is popular and allows you to quickly and accurately determine all the necessary values of lumber. When using the calculator, it is recommended to check the accuracy of the filling several times. In case of an error, the calculation will be performed incorrectly, which can lead to serious discrepancies in the final figures.

How many boards are in a cube: table (6 meters)and tips for its use

The last method to determine the quantity and cubic capacity of wooden products is to use a special table. This method is very convenient as it does not require lengthy calculations. All that is needed is simply to find the desired value in the table using the original data (width, height and length).

In order to quickly find the correct answer to the question, how many boards are in one cube, the table is suitable the best way. However, experts point out one drawback of this method: numbers corresponding to cubic capacity or quantity are often rounded. Therefore, if you need to perform the most accurate calculation, it is recommended to carry out all the calculations yourself.

Volume of edged board in cube:

Board dimensions, mm	Length, m	Volume 1 piece, m³
50 to 200	6	0,06
30 to 100		0,018
20 to 150		0,018
30 to 150		0,027
20 to 200		0,024
30 to 200		0,036
25 to 100		0,015
40 to 100		0,024
25 to 150		0,0225
40 to 150		0,036
25 to 200		0,03
50 to 100		0,03
40 to 200		0,048
50 to 150		0,045
20 to 100		0,012

In addition, before starting to search for the desired value, it is advisable to make sure that the length of the lumber matches. Tables can be different, containing information about the cubic capacity of boards with a length of 3, 4 or 6 m. Today the most common are wooden crafts, the length of which is 6 meters. How many boards are in one cube? The table that allows you to determine the quantity of lumber also uses rounded values.

Do not forget that the board can be made from different types of wood. Therefore, before you start using the table, it is recommended to make sure that you have selected the required type of lumber.

How many boards are in 1 cube: table (6 meters):

Board dimensions, mm	Length, m	Number of pieces per 1 m³

The good thing about the tabular method is that it does not require calculations or self-filling of dimensional and other values of lumber to obtain an answer. It is suitable for determining cubic capacity, and also allows you to answer the question of how many boards are in a cube. The table is ideal for calculating large batches of products.

Prices of edged boards per cube: 50x150x6000and other varieties

Today you can find many types of lumber on the construction market. All of them are differentiated not only by size, but also by the type of wood from which they were made. The cost of these products is also influenced by production technology and their purpose. In order to find out how much a board cube costs, you need to familiarize yourself with all the varieties of these parts.

The most popular in the construction of private houses, cottages, and other structures is the classic edged board. It can be 1st or 2nd grade. The first option is more expensive because it has higher technical characteristics and durability.

Helpful information! The price for a 1st grade edged board is approximately 7,500 rubles. for 1 cubic Products that belong to a lower quality group cost about 4-6 thousand rubles. for 1 m³.

The width and height of the boards, as a rule, does not affect their cost. This is due to the fact that in a cubic meter, regardless of the dimensions of the wooden lumber, there will be the same number of parts. In the sense that for the same price you will get 44 edged boards 25x1500x6000 (price per cube: 7500 rubles) or 22 parts 50x150 having the same length.

Separately, it is worth mentioning the edged boards made in accordance with technical specifications(THAT). Lumber of this type costs on average about 7,000 rubles. per cubic meter Such boards are distinguished by good quality characteristics and can be used in the construction of various structures.

Unedged products are cheaper because they are of lower quality. Their cost is calculated using average values. The price of unedged lumber ranges from 4 to 5 thousand rubles. However, they are not recommended for construction. It is better to use higher quality lumber, for example, edged boards 40x150x6000 (price per cube: 7500) or similar products with other dimensions.

When purchasing wooden lumber, you need to pay attention to some points. For example, the board must be level. The curvature of a product most often indicates that the technology was violated during its production. Such parts are not used in construction because they do not have the required quality.

How much does a cube of board weigh? When purchasing this building material, you should consider its weight. For example, an edged board made from dry spruce weighs 450 kg (1 cubic meter). 1 m³ of raw product has a mass of 790 kg. Dry pine weighs 470, and wet - 890 kg. This knowledge will be needed when transporting products.

When choosing lumber and calculating it, you must be careful. The board should not have cracks, chips or other defects. Allowed small cracks, however, it is recommended to buy a whole one, quality product, corresponding to GOST. You should also pay attention to the presence of knots. This is due to the fact that they negatively affect the strength of the wooden part. The choice of calculation method depends on the specific case. If necessary, you can always use the services of specialists who will help you perform the correct calculations and draw up an estimate.

September 27, 2017
Specialization: facade finishing, interior decoration, construction of cottages, garages. Experience of an amateur gardener and gardener. We also have experience in repairing cars and motorcycles. Hobbies: playing the guitar and many other things that I don’t have time for :)

As a rule, the volume of boards is measured in cubic meters, so when purchasing material you often have to count how many boards are in a cube. If this task causes you difficulties, I suggest you figure out how to solve it quickly and correctly.

How to calculate

As you know, the material in question is of two types:

Edged - has a smooth cut edge;
Unedged (shalevka) - the edges are not sawn, so they may have a wane. As a result, the width of the plate is unstable.

The calculation method depends on the type of product processing, so we will further consider both options.

Edged

It is very easy to calculate the number of edged boards in 1 m3, since it has the correct geometry. To do this, you must first calculate the volume of a unit of product using the standard formula - V=a*b*c. For example, its length is 5 meters, thickness 3 cm and width 30 cm. In this case, V = 5x0.3x0.03 = 0.045 m3.

Now we count how many pieces are in a cube - 1/0.045 = 22.2~22 pieces. If, for example, you calculate that you need to purchase 50 units, the cubic capacity will be equal to 50x0.045 = 2.25 m3.

It must be said that cubic capacity can be measured in batches, i.e. a whole stack if the lumber is laid neatly. Knowing the volume of the stack and the amount of material in it, you can calculate the volume of a product unit by dividing the total cubic capacity by the number of pieces in the package. This will allow you to calculate the amount of material in 1m3 according to the above diagram.

Of course, such a calculation is not entirely accurate, since it largely depends on how neatly the stack is folded. But, in most cases, high accuracy is not required.

To avoid recalculation, you can use reference data. The table below shows the number of boards 6 meters long per cubic meter:

Unedged

It is impossible to accurately calculate the number of unedged boards in a cube, since this material does not have clear dimensions. However, it is also not difficult to obtain an approximate value.

For example, if you are going to sheathe something with wood, then you need to calculate the area that will be sheathed. Then the resulting value should be multiplied by the thickness of the material - this will be the required cubic capacity. The number in this case does not matter.

If you need to find out the number of pieces in 1m3, a table with average values will come to the rescue:

Our portal has an online calculator that allows you to quickly calculate the number of different lumber in a cube or vice versa - cubic capacity, if the quantity is known.

Determine the average thickness of the shalevka in the stack. For example, if the maximum width of the plate is 35 cm and the minimum is 10 cm, the average width will be (35 10)/2 = 22.5;
Now you can calculate the volume of one shalevka using the standard formula, for example, the length is 4 meters and the thickness is 20 mm. In this case, V=4x0.225x0.02=0.018m3;
Now we count the number of pieces in a cube - 1/0.018 = 55.5 pieces. 5 meter boards.

Keep in mind that companies that sell lumber always round up quantities in their favor. Therefore, you should buy with a small margin.

The height, length and width of the package are measured, after which all parameters are multiplied;
The resulting cubic capacity is multiplied by a factor of 0.96;
Next, the resulting value lasts for the volume of the shalevka (average in width).

Please note that bags often contain spacers, e.g. wooden blocks, providing ventilation of the space inside the stack. Therefore, when calculating the height of the stack, you need to measure the height of the bars and multiply the resulting value by their number in the vertical row. Then the total height of the spacers must be subtracted from the height of the stack.

If you are going to trim the edges later, keep in mind that an unedged board produces 80% edged board.

Here, in fact, are all the instructions for calculating the amount of lumber in a cube. In the same way, you can calculate the volume of the timber.

A few words about weight

When purchasing a board, the weight of 1m3 is important, since the choice of transport for delivery depends on it. Weight depends on two parameters:

Density of wood. As is known, different breeds have different densities;
Humidity. The higher the moisture content of the lumber, the heavier it is.

Of course, theoretically, you can put one board on the scales with your own hands and multiply the resulting value by the number of pieces in the cube. But since exact value usually not required, it’s easier to use data from the table:

Despite the fact that the price of raw material is much lower than dry material, it is usually not advisable to purchase it, because during the drying process it can become deformed or crack.

Conclusion

September 27, 2017

If you want to express gratitude, add a clarification or objection, or ask the author something - add a comment or say thank you!