Whether you are a carpenter or just buying the required volume of lumber cubic capacity based on calculations, the ability to correctly calculate the volume of lumber will help in the correct budgeting and save you from additional financial costs.
The additional need to learn how to calculate 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 influenced by many factors, the surface of the wood (chipping, grinding, firing, cracks, etc.), moisture and the way of cutting, which can be tangential and radial.
Types of lumber
There are many types of sawn timber on the market today, which differ in the manufacturing method and operational characteristics:
Of course, it is easier when sawn timber is packaged in packages with precise indications of price and volume, but this is quite rare and companies that produce large quantities of products at high prices are engaged in this. 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 slightly larger cubic capacity than necessary, since during 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 a board will differ depending on the type of wood, as well as the level of processing of the lumber. Unedged and edged boards are calculated using different formulas. As for the species, the easiest way is to count one cube of coniferous wood: the width, length and thickness of one board are measured and multiplied, and then the resulting indicators are multiplied by the amount of identical sawn timber.
An unedged board is obtained by longitudinal sawing of 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 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 differs, only the length and width remain identical. Differences in width are 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 at its different ends, therefore, for correct calculations, it is necessary to determine the minimum and maximum values of the width and thickness of the board. Divide the resulting results by 2. The formula itself will look like this: (a1 + a2) / 2 * (b1 + b2) / 2 * c... A calculator can come in handy if you need to make the right calculations. The only drawback of this method can be attributed to the high cost of time, tk. due to the fact that the boards are different for honey, you will have to measure each unit 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, be it the floor or the wall. To do this, we take the area that needs to be trimmed with a board, and multiply it by the thickness of the cladding material - the resulting number will be the required volume of lumber. For a better understanding, we will 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. Then we multiply the resulting result with the thickness of the unedged board and we get: 95 * 0.020 = 1.9 cbm. The width of the board does not matter, it has no effect on the calculations. But at the same time, for the performance of construction work, it will not be superfluous to find out the average values of the board, depending on its length. You can see the averaged data in the table below.
Edged board is the most common 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 edges are processed, the resulting material has a 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 operational characteristics increase, but also the price. The price is also influenced by the type of wood and the type of lumber.
Since the edged boards are identical in size, the calculation of the cubic capacity will be made 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 square bar is most often used, that is, with an aspect ratio of 100 * 100 mm. To calculate the cubic capacity of one bar, it is necessary to multiply the product of its width and height by the length of the bar. 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, we multiply the width by the height, and the resulting value is multiplied by the length of one bar. In general, the calculations will look like this: 0.10 * 0.10 * 9 = 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 = 2.7 m3.
If there are grooves in the timber, then this often does not in any way affect the cubic capacity, since the products in the lumber batch are tightly connected to each other.
General conclusions
Calculating the required amount of cubic meters of lumber is not at all difficult if the formulas for the calculations are known. After measurements, it will become much easier for you to calculate the required amount of cubic meters and quickly find out its cost.
Almost everything in our world has its own dimension. We measure oil in barrels, coal in tons, the population of countries in thousands, millions.
We take as a basis a quantity that can specifically designate the object that we are measuring. When the question arises of how to calculate the cubic capacity of a board, we are no longer talking about the mass of the object, since wood has a completely different density, and one tree is different from another. In addition, boards of the same species will have different weights based on their moisture content.
For the convenience of calculating the cubic capacity of the board, volume measurement formulas are used.
Suffice it to recall school mathematics and the necessary formula by which the width, length and height should be multiplied. For the calculation to be correct, it is necessary to adjust all parameters to one value, for example, in centimeters or decimeters. It is most convenient to take meters as a basis. Thus, having made three times the multiplication in meters, we get m³ or cubic capacity.
Note. To calculate the cubic capacity of the board, special formulas are used.
Cubic capacity of boards
Boards may vary in width, length, thickness. In addition, they are sold unedged and edged. Often, lumber has its own generally accepted standards that facilitate the calculation of cubic capacity.
For usual sizes of material, there are already calculated volumes, which are systematized in tables for measuring the cubic capacity of boards. Therefore, to determine the volume of the material, you just need to open the table with the indicated dimensions and calculate the volume.
But, in order to do this, you must have these tables with you. Otherwise, in the absence of such, the cubic capacity of the edged board is calculated, before determining the thickness and length. These are the main dimensions that meet the requirements for sawn timber. They are different for each material taken separately. For example, to create a lathing, a board is used, in which the thickness is 25 mm, and for rough floors, 50 mm. Next, you need to measure the width of the board.
In the case of an edged board, everything is simple, since the material is cut in order to give the same width. Further, using a calculator, all values are multiplied among themselves. With a board length of 5 m, a thickness of 50 mm and a width of 25 cm, the volume of material will be:
5 x 0.050 x 0.25 = 0.0625 m³
After multiplying the resulting number by the number of boards, we get the total volume of material.
The formula for calculating the cubic capacity of the boards
V = L x h x b
L - length
h - height
b - width
Determination of the number of boards per cubic meter
1 m 3: V = N
In order to determine the cost of a specific type of board, given the volume values: V x price 1 m 3.
There is one more point that you need to pay attention to when determining the cubic capacity of the boards - the nominal length is exactly 6.1 - 6.2 m, but this is not taken into account when selling. This often matters when buying a lot of material. For example, let's take a board with dimensions of 150 x 20 mm.
Having made some simple calculations, we get the number of boards in 1 m 3 - 55, 5 pieces. So, in the cubic capacity of a 6 m board, there are exactly 55 pieces, in total, when calculating, we get a value of 0.99 m 3. Essentially, the overpayment for the cubic capacity of the board will be 1% of the exact price. For example, at a cost of 4,995 rubles, we pay 5,500 rubles.
Unedged board
Calculation features
The calculation of the cubic capacity of an unedged board is somewhat complicated, since the material does not have the same width between different boards, but also in each board separately. This can be explained quite simply - the tree does not have the same diameter.
It is clear that at the bottom it is wider, at the top it is narrower. Thus, the width of the edged board does not fall under any standards. What to do in this case? Use different formulas for the calculation. The width of the board is measured for convenience in the middle of the length. This gives you an average width. This counting method works well if the batch is small.
For industrial volumes
This method is not suitable, since the work will be very slow, and this is not profitable. For such cases, experts have developed the so-called unedged board cube. The volume in it is obtained by measuring and experimenting, in other words, using many measurements and calculating the average value of the width.
Of course, this cannot be called a super accurate method, but the deviations are so small that they should not be paid attention to.
Some wood processing companies use the stack measurement method in practice. This does not require pre-sorting the wood by width. Experts measure the length of the board, the average width and height of the stack. The obtained values are multiplied among themselves, and the result is multiplied by the coefficient for calculating the cubic capacity of the board, which has an average value of 0.67.
Weighing method
In order to measure the cubic capacity of the unedged board, having obtained the most accurate result possible, the weighing method is used.
Before doing this, it is necessary to measure the moisture content of the material and dense wood. Considering that edged board is the cheapest material used in facilities with the least degree of responsibility, complicated calculations are not very justified.
Also, it should be borne in mind that the result that you get will not be very different from that that can be obtained using a cubic meter.
When erecting residential buildings
Here, professionals in their field are required to perform many tasks, including: calculation and budgeting before finishing the premises. In addition, you need to calculate the required amount of building materials. It is worth noting that this task is quite difficult. With this in mind, determining the cubic capacity of the board is an important point.
Note. The cubic meter of lumber is calculated using a single method. The type of board does not affect the result obtained.
To non-grooved species wood include: edged board, unedged board.
Grooved views- these are those that have special grooves for perfect joining of boards: flooring, lining,. Please note that when purchasing a grooved board, the calculation is carried out using the working width of the material, without spikes.
Regarding the calculation of the cubic capacity of an unedged board, with the width of one end of 25 cm, and 20 cm of the other, the average value will turn out to be 22 cm.To calculate a large amount of material, it is laid out in such a way that the wide part does not differ from the narrow one by more than 10 centimeters.
The main length of the board in the unfolded pack should be approximately the same. Then, using a tape measure, measure the height of the stack of boards and the width in the middle. The result, which is obtained from measurements, is multiplied by a coefficient with a value of 0.07 - 0.09, which depends on the air gap between the boards.
The construction of a private house, summer house or any other building requires an estimate. It indicates the amount of building materials and their cost. There are several methods for performing the corresponding calculations. Plank 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 are in a cube: types of lumber and features of their calculation
The boards used in the construction of houses and other structures differ in several ways. 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 method of production, these building elements are divided into types:
- edged;
- unedged.
The first of them belong to the highest grade and have the correct shape, since all their faces are amenable to processing. In turn, unedged products are most often used to organize rough flooring, etc. The peculiarity of this material is that its lateral edges are not processed, they contain bark and have a 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 of the materials will be used in the construction process. For example, it is easier to calculate the cubic capacity and cost of a cut part, since it has a geometrically correct shape.
For unedged products, there are constant values that are arithmetic mean numbers. The table of boards in a cube in this case is not always suitable, since it takes into account the rounding of even edged lumber.
Separately, it should be said about building materials for finishing. This group includes floorboards, lining, block house and products that imitate timber. The design of these finished parts includes special ribs and grooves necessary for the tight connection of individual elements to each other.
Helpful information! When calculating finishing lumber, you need to focus only on the dimensions of the main part of the board. Thus, the size of the tool joints is not taken into account; only the numerical values of the product body are taken for the calculation.
Regardless of which type of material is used, a single formula is used to calculate the number of boards in a cube. An exception in this case is unedged products. Their calculation has its own characteristics, because such parts do not have all the faces necessary for the calculation.
Cube volume formula: how many edged boards in 1 cubic meter
A cube is a geometric figure that consists of 6 equivalent faces. Each of them is a square. To determine the volume of this figure, it is necessary to multiply 3 indicators among themselves:
- 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 is the height of the cut 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 carrying out the calculation, 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 such a transformation will look like this:
V = 0.025 x 0.15 x 6
The result is that the volume of one piece of wood is 0.0225 cubic meters (m³). Next, it remains to calculate how many pieces of edged boards are contained in 1 cubic meter. There is a simple formula for this. It means dividing 1 cubic meter by the volume of 1 board, which was obtained using the previous mathematical expression. Let's consider the calculation using an example:
1 m³ / 0.0225 m³ = 44.4
Thus, 1 cubic meter contains approximately (if rounded off) 44 boards. After that, it is already possible to independently determine the amount of material required for the construction of a specific structure. 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 of a cubic meter. Let's take an example:
0.0225 x 8200 rubles. = RUB 184.5
The calculation showed that the cost of 1 edged product will be approximately 184 rubles. If the cost of 1 part is known, but it is necessary to calculate the price of a cube of a board, you need to do the reverse manipulation. In this situation, you will need to divide the price for 1 item (184.5) by its volume (0.0225).
Note! Sometimes, especially when buying a small batch of boards, there is confusion with the decimal places. In some cases, sellers of sawn timber deliberately expose the cost, calculated by rounding up to 3 numbers. However, by law, this value is only suitable for large batches of boards. When purchasing several products, it is recommended to round in accordance with 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 stock (several pieces).
How many boards in a cube: calculation of unedged lumber
The calculation of the cubic capacity of an unedged board has some nuances, since its shape is not correct. Such material does not have a rectangular section along its entire length, therefore it is used to organize temporary structures. The lower and upper surfaces of the unedged board must be processed along the entire length. Otherwise, this product is a side part of the log (slab).
To find the volume of unedged lumber in 1 cubic meter, as well as its amount, there are several methods. It should be noted right away that it is rather difficult to determine how many boards are in one cube when it comes to irregular geometric shapes. Therefore, the initial numbers obtained when calculating unedged parts will be an approximate figure.
Consider what methods are used to calculate the cubic capacity and the amount of unedged sawn timber:
- batch;
- piece by piece;
- sampling method.
In the first case, you will need to load the lumber into a bag that must have the correct shape. After the bookmark, you need to measure the desired indicators. The following is a standard procedure for determining the volume using the measured values. This method is most common for products that do not have clear edges. For example, using it you can calculate the cubes of a 25x150x6000 board in a cube (unedged).
It is worth noting that this type of mathematical expression uses a special coefficient (for the width), which is the arithmetic mean. Although this option is not fast, it allows you to answer the question of how to calculate the cube of the board.
The piece-by-piece method involves the use of numbers corresponding to the arithmetic mean of the height and width of the trimmed product. These values are calculated in meters.
In order to find the arithmetic mean, it is necessary to measure the board. The minimum width (at the narrowest point) and the maximum are measured. Further, both indicators are added and divided in half. After that, 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 see how it looks like a mathematical expression:
(b max + b min) / 2 x (h max + h min) / 2 x L = V
Using such a 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 a part. After obtaining this value, you can calculate the total number of boards in a cubic meter. For such a calculation, you will need to use a formula similar to the cut part (a cubic meter is divided by the volume of the product).
Helpful information ! When buying raw boards, you need to be careful. Sellers should use a factor that affects the reduction in total volume, taking into account future shrinkage. To calculate wet coniferous products, 1 cubic meter must be multiplied by 0.96. In turn, the coefficient for hardwood is 0.95.
The last way to determine the volume of lumber and its quantity in 1 cubic meter is the sampling method. It is used when calculating large batches of wooden building materials. The essence of this method is that several boards are selected from the total mass of boards. Then the parts are measured and calculated in accordance with the piece-by-piece 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, you can take an unedged product with dimensions of 50 by 150 by 6000 mm. First, we convert millimeters to meters. Some people don't know how many millimeters are in 1 meter. To convert, you 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
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After adding and dividing by 2, we get 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 the calculation is made, the result of which is finding 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 an edged 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. It is important in this case not to be mistaken and not to forget 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 amount that corresponds to the total price of the cube. This is how the cubes are calculated in the cube of a 50x150x6000 board.
Calculating a board using an online calculator
Perhaps the easiest way (along with the lumber cubic table) to determine the exact value of the volume and number of wooden planks is an online calculator. It is a program with predetermined algorithms that allow you to calculate all the required values of lumber. This method makes it possible to calculate not only the edged board, but also other varieties of these products.
Note! In order to avoid the likelihood of an error when calculating the material on the online calculator, you should immediately indicate for which board the measurement is used.
The process itself is quite simple. First, you need to find a calculator on one of the specialized sites using the search line of your browser. Next, you need to enter the necessary indicators in the appropriate cells. The cube board calculator will calculate on its own.
This method is popular and allows you to quickly and accurately determine all the desired values \ u200b \ u200bof the lumber. When using the calculator, it is recommended to check the filling accuracy several times. In the event of an error, the calculation will be performed incorrectly, which is fraught with serious discrepancies in the final figures.
How many boards in a cube: table (6 meters)and tips for its use
The last method to determine the quantity and volume of wood products is to use a special table. This method is very convenient, as it does not require long 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 of how many boards are in one cube, the table is best suited. 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.
The volume of edged boards in a cube:
Board dimensions, mm | Length, m | Volume of 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 the search for the desired value, it is advisable to make sure that the length of the lumber is consistent. The tables can be different, containing information on the cubic capacity of boards with a length of 3, 4 or 6 meters. Today, the most common products are wooden products, the length of which is 6 meters. How many boards are in one cube? The table to determine the amount of lumber also uses rounded values.
Do not forget that the board can be made from different types of wood. Therefore, before starting to use the table, it is recommended to make sure that you have selected the type of lumber you need.
How many boards are in 1 cube: table (6 meters):
Board dimensions, mm | Length, m | Number of pieces in 1 m³ |
The tabular method is good in that it does not require calculations or self-filling in the overall and other values of the lumber to get an answer. It is suitable for determining the 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 quantities of a product.
Prices of edged boards per cube: 50x150x6000and other varieties
Today in the construction market you can find many types of lumber. All of them are differentiated not only by size, but also by the type of wood from which they were made. And also the cost of these products is influenced by the production technology and their purpose. In order to find out how much a cube of a board costs, you need to familiarize yourself with all the varieties of these parts.
The most popular in the construction of private houses, summer cottages, as well as other structures is the classic edged board. It can be of 1st and 2nd grade. The first option is more expensive, as it has higher technical characteristics and durability.
Helpful information! The price for an edged board of the 1st grade is approximately 7,500 rubles. for 1 cubic meter 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, do not affect their cost. This is due to the fact that in a cubic meter, regardless of the dimensions of the timber, there will be the same number of parts. In the sense that for the same price you will receive 44 edged boards 25x1500x6000 (price per cube: 7500 rubles) or 22 parts 50x150 having the same length.
Separately, it should be said about edged boards made in accordance with technical conditions (TU). Lumber of this type costs an average of about 7,000 rubles. per cubic meter Such boards have 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 averaged values. The price of unedged sawn timber ranges from 4 to 5 thousand rubles. However, they are not recommended for construction. It is better to use better quality lumber, for example, edged board 40x150x6000 (price per cube: 7500) or similar products with other dimensions.
When buying wood lumber, you need to pay attention to some points. For example, the board must be flat. The curvature of the product most often indicates that the technology was violated during its production. Such parts are not used in construction, as they do not have the required quality.
How much does the cube of the board weigh? When purchasing this building material, its weight should be taken into account. 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 has a weight of 470, and wet pine - 890 kg. This knowledge will be needed when transporting products.
When choosing lumber and calculating it, you need to be careful. The board should not have cracks, chips or other defects. Small cracks are allowed, but it is recommended to buy a solid, high-quality product that meets GOST. And also you should 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 the calculation method depends on the specific case. If necessary, you can always use the services of specialists who will help you perform the correct calculation and make an estimate.
In order not to waste time in the process of waiting for the delivery of lumber and the problem of shortage, you should immediately calculate the required quantity and place an order with a certain margin. Initially, it is worth finding out how many boards are in a cube. The table given in the regulatory documents will help you quickly determine the desired value. You can also use the cubic meter calculator developed by our team, with the help of which it is easy to determine the number of a specific standard size online. We suggest that you familiarize yourself with the possible methods to make it easier to choose the optimal one.
Anything starts with choosing the right material. Manufacturers offer lumber in various sizes, shapes and degrees of processing. Each of the listed indicators can have a significant impact on the cost. In order not to overpay, we suggest that you familiarize yourself with the most popular types of lumber, as well as their possible area of use.
Edged timber
The most popular type, widely used at the stage and during the repair work. Can be of various sizes in all directions. Made from solid wood. All edges of the material are processed.
To find out how much will be in a cube, you need to know the cutting parameters. By multiplying the length by the cross-sectional area, you can find the volume of one product. To determine the amount of timber in a cube, it will be necessary to find the inverse value of the found volume, expressed in meters. If you initially know how much is required, the volume of one product will need to be multiplied by the required amount. We will describe in more detail how to calculate the cubic capacity below.
Attention! The trim material has natural moisture. In the look-up tables, you can find the numerical value of moisture for different woods.
Sliced timber
Lumber of this type must be dried during the manufacturing process. This affects the dimensions and weight of the finished lumber, as well as its service life. When determining how much a cube of a board weighs, this factor must be taken into account.
The planed timber has a high-quality surface that can be used in industry. Its cross-sectional sides are 1 to 2.
Planed bar
According to its characteristics, the bar is similar to the bar. The difference, according to regulatory documents, lies in the geometric parameters. If the width of the product is 100 mm maximum, this is a bar. Otherwise, we are talking about a bar.
Edged bar
Lumber with natural moisture. According to its characteristics, it is similar to a bar, but has a smaller size. When choosing, you should pay attention to:
- what wood it was made of;
- how long it took to dry;
- for what design it is purchased.
Edged board
It is made from wood of natural moisture content. Has a width that is twice the thickness in cross section. This significantly reduces the bearing capacity in comparison with a bar. It is most often used when performing construction work inside a building: when installing, floor, walls. Suitable for the construction of a fence, outbuildings. The most popular board is inch, the dimensions of which can withstand significant operational loads.
Floor board
Timber with a designated purpose. Manufacturers offer several types of floorboards:
- Parquet of high quality, we provide a three-layer structure;
- combining the characteristics of natural wood and high-quality polymer;
- The usual, consisting exclusively of natural wood. Suitable option for the device.
Attention! Select a material that is thick enough for the specific service load.
Knowing how many square meters are laid, and how many boards are in a cube, you can calculate the thickness of the laid material.
Unedged materials
During the production process, such material is not processed from all sides. As a result, the finished product has two wide longitudinally spaced plates and uncut sidewalls. It is in demand in the construction of premises for various purposes, formwork, flooring, as well as in the performance of various irresponsible construction works.
Before calculating the cube, do not rush to rush in search of the corresponding formulas. If you do not want to do time-consuming calculations, reference tables will come to the rescue. How many boards per cubic meter can be found with their help in a matter of minutes.
How many boards per cubic meter according to the table
To begin with, it is worth noting that the dimensions of the lumber are standardized. Using the regulatory documents, it is easy to find out how many boards are in a cube. To do this, you need to decide what size material will be used when performing construction work.
If you did not manage to figure out how to use the tables, you can use the online calculator of planks in a cube, or perform the calculation yourself.
The basic procedure for calculating the number of boards per cubic meter
Before proceeding with the calculation, it is worth learning how to calculate a cubic meter. Such a volume will be numerically equal to a cube, each side of which is equal to a meter. To find the desired value, you need to multiply the linear dimensions of the figure among themselves.
To begin with, the volume of one product is determined. If we are talking about an edged board, we multiply the linear dimensions of the board: length by thickness and width. If they are given in millimeters (mm), be sure to convert them to meters. Otherwise, in the future it will be possible to get confused in the dimensions.
After the cubic capacity of one board is found, the calculation procedure depends on what initial data is. If you need to calculate the number of products in a cube, we find the inverse value of the one found. In other words, when calculating, the unit (1 cube) is divided by the calculated value. The resulting value should be rounded to the nearest whole number.
If the material is purchased for a specific surface, you will need to know the dimensions of the room in order to calculate the square of the room. To determine the required amount of lumber, cubic meters are converted into squares. To find out how many square meters are in a cubic meter, you need to divide the cube by the thickness (height) of the selected material.
If you are afraid to make a mistake when calculating the required amount, it is worth performing the calculation of the board in a cube on a calculator. A special program using standard formulas will allow you to determine the desired value much faster compared to independent calculations.
Board cubic meter calculator
For those who are afraid of making a mistake when performing the calculation, we suggest using the board cubic meter calculator. With its help, you can find out how many boards you need in a split second.
The very method of calculating the volume of a round log, board or bar is simple, it comes down to a mathematical problem of grades 5-6. But in reality, everything is much more complicated: conical logs, boards are often measured in inches, the timber has chamfers, there are other subtleties and differences in real wood products. Therefore, tables are so convenient, which summarize the data on measuring the cubic capacity of the forest, taking into account such form errors as the taper of the logs, the presence of bark, escaping, the complexity of the shape of the slab and plate and other nuances.
Figure 1. Table for calculating the volume of edged sawn timber.
Tables of round timber volumes in accordance with GOST 2708-75
The most common, accurate and verified table for determining the volume of round timber is the one given in the official document, GOST 2708-75, without a validity period.
It contains data on the volume of round wood, diameter from 3 to 120 cm, length from 1 to 9.5 m, with a step in diameter of 1-2, and in length - 10 cm.Additionally, specialized standard sizes of round logs are shown: 0.5-0.9 m and 10-13.5 m, and 6-15 cm and 8-38 cm thick, respectively. Their volumes have also been calculated. There are even more specific sizes.
Tab. 1. Cubic capacity of round wood 6-60 cm thick, 1-9 m long
| Thickness (diameter), cm | |||||||||
| 1,0 | 2,0 | 3,0 | 4,0 | 5,0 | 6,0 | 7,0 | 8,0 | 9,0 | |
| 6 | 0,0032 | 0,0073 | 0,0120 | 0,017 | 0,022 | 0,028 | 0,037 | 0,047 | 0,056 |
| 8 | 0,0053 | 0,0110 | 0,0170 | 0,026 | 0,035 | 0,045 | 0,057 | 0,071 | 0,084 |
| 10 | 0,0082 | 0,0170 | 0,026 | 0,037 | 0,051 | 0,065 | 0,082 | 0,100 | 0,122 |
| 12 | 0,0120 | 0,026 | 0,038 | 0,053 | 0,073 | 0,093 | 0,114 | 0,120 | 0,140 |
| 14 | 0,0160 | 0,035 | 0,052 | 0,073 | 0,097 | 0,123 | 0,150 | 0,179 | 0,21 |
| 16 | 0,0210 | 0,044 | 0,069 | 0,095 | 0,124 | 0,155 | 0,189 | 0,22 | 0,26 |
| 18 | 0,0270 | 0,056 | 0,086 | 0,120 | 0,156 | 0,194 | 0,23 | 0,28 | 0,32 |
| 20 | 0,0330 | 0,069 | 0,107 | 0,147 | 0,190 | 0,23 | 0,28 | 0,33 | 0,39 |
| 22 | 0,0400 | 0,084 | 0,130 | 0,178 | 0,23 | 0,28 | 0,34 | 0,40 | 0,46 |
| 24 | 0,0480 | 0,103 | 0,157 | 0,21 | 0,27 | 0,33 | 0,40 | 0,47 | 0,55 |
| 26 | 0,0570 | 0,123 | 0,185 | 0,25 | 0,32 | 0,39 | 0,46 | 0,54 | 0,63 |
| 28 | 0,0670 | 0,144 | 0,220 | 0,29 | 0,37 | 0,45 | 0,53 | 0,63 | 0,72 |
| 30 | 0,0770 | 0,165 | 0,250 | 0,33 | 0,42 | 0,52 | 0,61 | 0,72 | 0,83 |
| 32 | 0,0870 | 0,190 | 0,28 | 0,38 | 0,48 | 0,59 | 0,70 | 0,82 | 0,94 |
| 34 | 0,10 | 0,210 | 0,32 | 0,43 | 0,54 | 0,66 | 0,78 | 0,92 | 1,06 |
| 36 | 0,11 | 0,230 | 0,36 | 0,48 | 0,60 | 0,74 | 0,88 | 1,02 | 1,18 |
| 38 | 0,12 | 0,260 | 0,39 | 0,53 | 0,67 | 0,82 | 0,97 | 1,13 | 1,30 |
| 40 | 0,14 | 0,28 | 0,43 | 0,58 | 0,74 | 0,90 | 1,07 | 1,25 | 1,44 |
| 42 | 0,15 | 0,31 | 0,47 | 0,64 | 0,81 | 1,00 | 1,18 | 1,38 | 1,58 |
| 44 | 0,16 | 0,34 | 0,52 | 0,70 | 0,89 | 1,09 | 1,30 | 1,51 | 1,73 |
| 46 | 0,18 | 0,37 | 0,57 | 0,77 | 0,98 | 1,19 | 1,41 | 1,65 | 1,90 |
| 48 | 0,19 | 0,41 | 0,62 | 0,84 | 1,06 | 1,30 | 1,54 | 1,80 | 2,07 |
| 50 | 0,21 | 0,44 | 0,67 | 0,91 | 1,15 | 1,41 | 1,67 | 1,95 | 2,26 |
| 52 | 0,23 | 0,48 | 0,73 | 0,99 | 1,25 | 1,53 | 1,81 | 2,12 | 2,45 |
| 54 | 0,25 | 0,53 | 0,80 | 1,07 | 1,35 | 1,65 | 1,96 | 2,29 | 2,63 |
| 56 | 0,27 | 0,57 | 0,86 | 1,16 | 1,46 | 1,78 | 2,11 | 2,46 | 2,83 |
| 58 | 0,29 | 0,61 | 0,92 | 1,25 | 1,57 | 1,91 | 2,27 | 2,63 | 3,03 |
| 60 | 0,31 | 0,66 | 0,99 | 1,33 | 1,68 | 2,05 | 2,42 | 2,81 | 3,23 |
This is a frequently used part of the table. Small graduation of the sizes of logs and cubic capacity allows using it both in industry and private individuals. Therefore, this table can be called universal. On its basis, a variety of techniques have been developed, for example, measuring standing timber in forestry, edging in transport at customs posts, and others (Fig. 1).
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Working with ready-made calculations of cubic capacity
Of course, not all standard sizes are given here, but for example, it can be seen that calculations of the cubic capacity of various logs were made with great accuracy. In practice, the thickness (diameter) is measured, as indicated in GOST, then the length and cubic capacity is found from the table. Since the circumference of the cut of the log is not ideal in shape, 2 measurements of the diameter are carried out perpendicularly and its average value is found. It is this value that needs to be searched for in the string.
Figure 2. Using a caliper, you can measure the diameter and calculate the cubic capacity of the tree.
Example. A 6-meter log in the upper cut has 2 diameters (30 and 34 cm excluding bark), measured perpendicularly. We find the average value of the cut diameter of 32 cm. The length of the log is 6 m. From the table we find that at the intersection of a row with a value of 32 cm and a column of 6 m there is a volume value of 0.59 m³. If the log is rounded, then just one measurement of the diameter is enough. The error in the results is 2-4%, which is acceptable for most practical calculations.
When logging for a home, each log can be measured, but there is not always enough time and effort for this. Here, an industrial method of calculating the cubic capacity is used. The timber is sorted by length and then by equal upper diameters. Measurement is made in each group of one product.
And only after stacking in stacks or a car, the number is counted and the total cubic capacity is calculated by simply multiplying the number of logs by the volume of one of them.
In the forestry industry, for taxation (determination of the commodity stock of standing timber), in addition to simple tools, there are special electronic devices for measuring and calculating the parameters of standing trees.
Masser 2000 is a computerized measuring fork that allows not only to accurately measure the control diameter of a standing tree at a height of 1.3 m, but also to immediately determine the cubic capacity, taking into account the type, height and crown of the tree. Then the device outputs all the collected information to the computer (Fig. 2).