Selecting a Volume Measurement Method

The choice of methods for accounting and measuring the volume of wood
regulated by the following regulatory documents
(GOSTs):

• for firewood and off-grade (fuel) wood
  GOST 3243-88
  Firewood. Technical conditions
  Download (Downloads: 6871)
• for round wood
  GOST 2292-88
  ROUND TIMBER
  
  measurement methods and acceptance
  Download
• You can read more generally and extensively in the reference book:
  GENERAL REGULATIONS FOR FOREST TAXING

The requirements of GOSTs read as follows:

1. Round wood with a length of over 2 m and fuel wood (firewood) with a length of more than 3 m - are subject to piece measurement and accounting in a dense measure, in accordance with the tables of the volume of round wood (). In special cases (specified in GOST 2292-88, clause 1.2), round wood up to 2m long is also subject to piecemeasurement and accounting in a dense measure, c. Special cases is wood valuable breeds, raw materials for plywood production, aviation materials, etc.
2. The volume of all other wood that is not included in the above categories is measured by the method of converting the fold measure into a dense one.
   (from warehouse meters -> to cubic meters)
   (free download)

Thus, from the requirements of GOSTs, the following follows:

1. Dense measure, () is the main way to account for the volume of any wood material, including firewood. Measuring the volume of wood in a dense measure is a very cumbersome and time-consuming way of carrying out measurements and calculations, since in this case the diameter of the end and the length of each log is measured piece by piece

   Cubic meter (dense measure)

   Dense measure- the main method of measuring and accounting for the volume of wood.
   Dense measure- This is the net volume of wood pulp, which is defined as the volume of the cylinder of each log, taking into account the average thickness of the trunk.

   Wherein:

   • each log is measured individually and
   • when measuring the diameter of the end -
     the upper cut (smaller end) is selected
   • when measuring the diameter of the end -
     does not take into account the thickness of the bark and sap layer
   • when measuring the diameter of the end -
     the diameter of the oval end is taken equal to
     arithmetic mean
     between its highest and lowest value
   • the correction of the value is always made in minus from the gradation according to GOST
     (for example, the end diameter of 18.8 cm is taken as 18 cm, not 19 cm, the length of the log 4.47 m / p is taken equal to 4 running meters, and not four and a half, etc.)
   • The measurement method for round timber is regulated by
     GOST 2292-88
     ROUND TIMBER
     Marking, sorting, transportation,
     measurement methods and acceptance
     Download (Downloads: 5442)
   • After taking measurements,
     the volume of each log is determined
     according to the tables of the volume of round timber (by)

   Dense measure unit - cubic meter(cubic meter)

   To speed up and simplify the determination of the amount of round timber, they use a special method of accounting for it - point wood. The forest method is not regulated by any regulatory document and, in essence, is a variant of verbatim writing

   Dotting forest

   "Dotting" (dotting) of the forest is a method of shorthand writing for recording the number and parameters of logs and decks, used for accounting when listing tree trunks, stacked or "standing". At the same time, a table is drawn up in an arbitrary form, in which the measured (taken into account) parameters of round timber (round timber) are recorded. Most often, these are the diameters and length of the logs, less often - the species of wood, sometimes - combinations of other required values ​​(age, species, etc.).

   The term "wood sharpening" was born in those distant times, when there were still no computers and calculators. In ancient times, foresters used this prototype of stenographic counting. This, however, does not detract from the merits of this method of accounting in our days. Its essence lies in the fact that each number corresponds to its own drawing, a kind of hieroglyph that denotes this number.

   The term "point" itself comes from the words "points", which are put in the process of accounting

   The first point is conventional sign, which is applied to the end of the registered and measured log, in order to avoid its repeated counting. The concept of a "point" at the end of a log is a complete convention. It can be anyone visible mark, the meaning of which is chosen depending on the circumstances. For example, it can be a special forester's mark, the size of the logged log's diameter, or just a slash drawn with chalk.
   ... The second point is entered into the table in a special way and participates in further calculations of the amount of forest
   It happens like this:
   - the first four logs are four points at the corners of an imaginary square,
   - the next four logs are the connecting lines of these points to each other in a square
   - and, finally, 8 and 9 logs are the diagonals of the square
   In total - 10 logs symbolizes a square with crossed out diagonals
   - Further - everything is repeated until the end of the calculation.

   Round wood volume

   The volume of round timber is determined after turning round timber, when it becomes known how many and what diameter of logs are contained in the stack. To determine the volume of round timber, open the cubicle box and by simple multiplication we find out the volume of recorded timber.
   Cubaturnik- a special table for calculating the volume of round timber. The diameters go along the vertical of the cubicle, and the lengths of the logs go horizontally. At the intersection of the vertical and horizontal lines - the volume for each log of the specified length and diameter.

   Tables of the volume of round wood (cubicle)

   Cubatorn is colloquially called GOST 2708-75
   TIMBER ROUND Tables of volumes

   : "(Link-category)"

   (related-news)

The cubic capacity of a log is a certain volume of lumber, the unit of measurement of which is a cube. m. This parameter is used in the construction of wooden houses in order to calculate the required volume of round wood. The determined indicator is very important when calculating the payment for the sold lumber for building a house, since you need to know the cost of each cubic meter. m of wood.

Round wood is very convenient and practical for the construction of houses, baths and other residential and non-residential premises.

The way to correctly count lumber

Exists different options, allowing you to calculate the cubic capacity of a log, which is a round cylindrical sawn timber. This estimate is indicative only. In the methods used, the initial geometric parameters are provided, on the basis of which the calculations are made.

Industrial harvesting of lumber is associated with rather complex calculations, which are carried out to find out the cubic capacity of the forest. For accurate calculations, use a special truncated cone formula. It is built on the basis of determining the main diameters of each of the two tree cuts and the length of the logs.

In practice, this complex method is rarely used, since the world standards that determine the cubic capacity of round timber require the use of special tables. Calculating the volume of a forest when building a house in this way is not particularly difficult. The result is quite accurate, and the calculation is based on the value of the volume of the material in the form of a parallelepiped and average the index of the thickness of the cut of the log in its upper part.

How to calculate the cubic capacity of a log in a single version correctly?

Until now, the calculation of the cubic capacity of a single tree was determined by multiplying its length by the arithmetic mean of the total area of ​​all cuts. This method involved the use of a special measuring instrument that resembled a caliper.

1. Roulettes.
2. Calculation tables indicating the final cubic capacity.

Before calculating the cubic capacity of the log, the size of its diameter in the middle part was increased three times, obtaining a certain value of the cross-sectional area. It had to be multiplied by the length of the workpiece to get the result of the volume of the material. This method was not accurate because the thickness of the tree bark was not taken into account.

The value of pi in the circle formula was applied with a very large deviation, so the distorted form of the formula did not allow making accurate calculations without errors. In practice, the following formula is used: the diameter divided by 2 round tree is squared, then the result is multiplied by Pi and the length of the tree.

It cannot be argued that it is correct to calculate the cubic capacity of a forest for building a house only on the basis of tables, special measurements and appropriate formulas. The simplest is the method associated with determining the density of a tree species.

If we consider the volume of round wood by measuring the thickness of the bark of lumber for the construction of houses, then it is unrealistic to determine the diameter of the logs without possible errors. The calculated parameters will be imprecise. To correctly calculate the volume of a unit wood material, make measurements of its length with a tape measure, then measure the diameter of the saw cut at the top, not taking into account the thickness of the bark.

Next, you should look at a special table, in which at the intersection of rows and columns with the given values ​​of the length of the tree, as well as its diameter, the amount of material is determined. This method is reliable. Before calculating the forest volume in this way, you should know that it is not perfectly accurate, since the shape of the trunk and the conditions associated with growing forests for building houses are not taken into account. However, these little things are usually ignored.

How to calculate the volume of round stored timber?

Image 1. Calculation of the volume of round stored timber.

If we consider the industrial volumes of round timber blanks, then other tables and parameters of round logs are used here, which make it possible to calculate the cubic capacity. As shown in the figure (IMAGE 1), the roundwood in storage conditions has the shape of a parallelepiped in the form of a rectangle.

The method for calculating this volume is simple and well-known from school knowledge. In practice, the use of this method does not give an accurate result, since the dimensions of the voids between single logs are not taken into account. The dimensions of the voids depend on the diameter of the logs and can be calculated mathematically. It will not be possible to calculate the exact values ​​in the case of inaccurate stacking of log blanks. This procedure are not carried out during the assessment of the forest in storage, since the volume occupied round wood at the warehouse itself.

If you carry out a preliminary weighing of the forest, then it will not be difficult to calculate the cubic capacity, since it is not completely filled with wood material. The required value should be reduced using the void ratio. When carrying out construction calculations, the value of the coefficient of voids is 0.8, which is 20% of the area of ​​the space that is occupied by an air void, and 80% is the volume of the tree.

The sequence of actions for determining the cube size is reduced to the following main steps:

1. A measurement of the width, length, height of a space that is rectangular.
2. Multiplying certain values ​​among themselves to calculate the result of the volume.
3. Multiplying the result by a factor of 0.8, which takes into account the number of voids between the logs, which is approximate.
4. Acceptance of the obtained value for the effective one.

Using this method, the cubic capacity of round wood is calculated, which is heterogeneous in size.

Calculations depending on the type of material

To calculate the volume of lumber by dividing the weight of the forest by its density, it is necessary to take into account the type of wood.

Image 2. Table for calculating the cubic capacity of unedged and edged boards, bars, lining, slats, etc.

The result will be far from ideal, since the forest can have varying degrees of maturity, hence different deviations in density. The main role belongs to the moisture content of the wood.

The woodworking industry is characterized by concepts related to dense cubic meters and folding. The price list for such sawn timber will contain information about the volume in its dense mass; it will be necessary to convert the cubic meter into a dense mass. For this purpose, conversion factors are used.

The volume of coniferous or deciduous forest is calculated by two methods:

1. By measuring all units of the tree.
2. Through the use of a standard, that is, a cubature developed in accordance with GOST.

Cubature is designed to calculate the volume of edged wood material based on standard tables. In one, you can find the volume of a meter of wood, and in the second - units, which allows you to calculate the cost of a forest.

The proposed table (IMAGE 2) contains calculations of the cubic capacity of unedged and edged boards, bars, lining, slats, etc. Measurement has its own specifics, that is, the size of the width of any board is equal to half the width of the narrow and wide layers measured in the middle of the board. Volume calculation round material performed correctly if each log is measured.

Construction work requires the solution of many different issues, among which the most important task is the selection and purchase of lumber. Calculate how much running meters boards and beams will be needed during the construction process, it's not difficult. But the price of industrial wood is indicated for 1 cubic meter, and this often causes difficulties for novice home craftsmen. The ability to correctly select and calculate the amount of edged or unedged lumber in a cube will save money and avoid a situation when, after completion construction works a pile of unused boards remains on the site.

Classification and characteristics of sawn timber

The very name "sawn timber" suggests that this type of building material is obtained by longitudinal sawing of tree trunks on circular or band saws... For the production of boards and beams, several sawing methods are used:

• tangential (in a circle),
• radial.

Tangential sawing means the saw to travel tangentially to the tree rings, which reduces waste and therefore reduces the cost of building materials. The boards obtained in this way have a beautiful, pronounced pattern, therefore they are often used for finishing purposes. Disadvantages of circular sawing include the tendency of wood to shrink and swell, as well as a significant difference in texture as it approaches cutting tool towards the center of the log.

There are several ways to cut the trunk in the sawmill.

With a radial cut, the cutting line goes through the core of the tree, so the output of the boards will be less and their price will be higher. Nevertheless, if it is necessary to obtain high quality wood, this method is used. This is due to the fact that, in comparison with the tangential method, radial sawing boards have two times reduced swelling and shrinkage rates. In addition to the sawing methods discussed above, a mixed method is also used, which combines the advantages of the first two.

The concept of lumber actually includes not only the traditional moldings, which are most often seen on construction markets. Complete list products that are obtained by sawing logs include:

• board;
• timber;
• bar;
• lagging;
• croaker.

The last two types of sawn timber are waste, which absolutely does not prevent them from being used for certain types of construction work, as well as for finishing purposes.

Planks

Planks include lumber rectangular section with a thickness of no more than 100 mm and a ratio of width to thickness of at least 2: 1. Depending on the degree of processing, the board can be edged or unedged. The first is ready product without bark and with evenly sawn edges, while the second is a "semi-finished product" taken directly from the saw frame.

The edged board has straight edges and a constant width along the entire length of the lumber

Most often used in construction are boards of such standard sizes:

• thickness - 25 mm, 40 mm, 50 mm, 60 mm;
• width - from 75 to 275 mm with gradation every 25 mm;
• length - from 1 m to 6.5 mm with a step of 250 mm.

Boards of other sizes can be obtained by cutting or planing standard lumber, as well as by making individual order for sawing round timber.

Unedged board has a lower cost, but without finishing its scope is limited

The parameters of lumber used in construction are standardized and determined according to the current GOST 8486–86 for softwood and GOST 2695–83 for hardwood.

Beams

A bar is called lumber, the cross-section of which is a square with sides of at least 100 mm. The size of the bar in cross-section is unified and can vary from 100 to 250 mm with a step of 25 mm. The standard defines the length of products of this type from 2 to 9 m, but most often square-section lumber is used with a length of no more than 6 m.In some cases, products with a cross-section of 150x100 mm, 200x100 mm or 200x150 mm, which are existing classification are much closer to the sleepers.

Cant is ideal material for the construction of frames and other wooden structures

The bar differs from the bar discussed above only in that its section does not exceed 100x100 mm. The typical bar length is also 6 m, and the cross-sectional size ranges from 40 mm to 90 mm in 10 mm increments. To simplify the classification, bars are often referred to as a rail, in which the cross section has rectangular shape, and the ratio of thickness to width is at least 1: 2. Standard row of edges of timber battens conifers looks like this: 16, 19, 22, 25, 32, 40, 44, 50, 60, 75 mm. For hardwood lumber, products of increased width are additionally provided, and the product line itself looks like this: 19, 22, 25, 32, 40, 45, 50, 60, 70, 80, 90, 100 mm.

A variety of bars and slats allow you to strengthen and make any wooden structure as stable as possible

Obapol and croaker

Obapol is the very first cut of round timber, in which outer surface remains unprocessed. Unlike obapol, the slab can have a cut in half of the second side or an alternation of treated and untreated areas on the bark side. The meaning of obapol and slab in construction is secondary, since it is unaesthetic appearance and reduced performance characteristics allow the use of this type of lumber only for auxiliary purposes. Most often, slab and obapol are used as a fastening material, as well as for the manufacture of formwork, lathing or flooring scaffolding... This material is also interesting as decorative material for decorating walls, fences and other vertical structures.

Despite the external ugliness, slab and obapol are widely used for secondary construction tasks.

Technology for calculating the number of boards in a cube

On the timber market there are both edged sawn timber and unedged board, along the edges of which there is wane. Depending on the type of wood products, several methods are used to determine the cubic capacity.

How to find out the amount of edged lumber in a cube

The algorithm for determining the cubic capacity of lumber is based on the formula known to every schoolchild for finding the volume of a rectangular parallelepiped. In order to find out the cubic capacity of one board (V) in cube. m, you need to find the product of its length (a) by width (b) and thickness (h) in meters V = a × b × h.

The desired figure will make it easy to calculate how many boards of this type will fit in one cubic meter of lumber. For this, 1 cubic meter. m of lumber is divided by the volume of one product. For example, if you need to find out the cubic capacity of one board with parameters 6000x200x25 mm, then substituting these numbers into the formula, we get V = 6x0.2x0.025 = 0.03 cubic meters. m. Consequently, in one cubic meter there will be 1 / 0.03 = 33.3 such products.

The tongue-and-groove board has a groove on one side and a tongue on the other. Since both of these elements are approximately equal to each other, their parameters can be neglected. That is why the size of grooved lumber in diameter is measured without taking into account the locking part.

In the case of boards that have the same dimensions, the calculation can be simplified by substituting the dimensions of the lumber pile in the formula. Of course, in this case, its laying should be as dense as possible, otherwise the gaps between separate elements will affect the accuracy of the calculations. Considering that the cost of certain types of wood reaches tens of thousands of rubles, such an error can result in a round pretty penny.

To simplify calculations, you can use special tables that allow you to quickly determine the volume or amount of wood in 1 cubic meter. m of lumber.

Table: the number of edged boards in 1 cubic meter m of lumber of standard length

The cubic capacity of a bar of standard sizes can also be determined using the table below.

Table: the amount of timber in 1 cubic meter m of lumber

Very often it is required to determine the surface area (floor or wall) that can be covered with a board of one thickness or another with a volume of 1 cubic meter. m. To do this, you can use the formula S = 1 / h, where h is the thickness of the lumber. So, one cubic meter of a 40 mm board will be enough to equip S = 1 / 0.04 = 25 square meters. m of floor. To facilitate the process of calculating the area, a table called a cubature allows. It contains data on the section of the boards, their number in 1 cubic meter. m and the required area that they can cover.

Method for calculating the cubic capacity of an unedged board

Unedged sawn timber is not trimmed at the edges, therefore, not only the size in diameter of individual products differs, but also the width different parts one board. In this regard, it is possible to calculate the volume of a pile of untreated sawn timber only approximately. The same applies to the calculation of the cubic capacity of a separate unedged lumber, although the error in this case will be much smaller.

So, to calculate the cubic capacity unedged boards there are two constants, thickness and length, and one variable, width. To avoid complex calculations using differential algebra methods, the last parameter is simply averaged. To do this, the board is measured in several places and the arithmetic mean is found. For example, for a board with a diameter of 400 mm at the base, 350 mm wide in the middle and 280 at the top, the calculated value will be (430 + 340 + 260) / 3 = 343 mm. Further calculations are carried out in the same way as for edged sawn timber.

Most often, the width of the unedged board is determined only on the basis of measurements along the edges of the lumber. It should be noted that the accuracy of calculations directly depends on the number of measurements, therefore, in critical cases, their number is increased.

If you want to know the cubic capacity of a package of unedged wood, then the products are stacked on top of each other in such a way that the following conditions are met:

• stacks must be aligned along the front end;
• boards in a stack should not overlap;
• it is not allowed to change the width of the package along the entire length of the lumber;
• the protrusion of the end products outside the stack should not exceed 100 mm.

Having measured the height, length and width of a package of unedged timber with a tape measure, the approximate cubic capacity is determined using the formula V = a × b × h. To find out a more accurate value, the result is multiplied by the stacking factor, which can be found out from special tables.

For many builders, the topic of calculating the number of logs in a cube is familiar. But for an unprepared person, this may seem not only very distant, but also incomprehensible. And very often there are disagreements between the builders themselves, as well as between the builders and the customer about how many logs should be in the cube.

In order to deal with this problem, a mathematical method is usually used, which in a few minutes can give a clear answer about how many logs are needed for a certain amount of cubic meters.

As a rule, rounded logs are used in the construction of wooden buildings. But this material can vary in size, that is, in length and diameter. It is customary to take centimeters as a unit of measurement. One cubic meter contains one million centimeters. Thus, first you need to decide on the size of the logs.

In order to measure the size of the logs, you will need an ordinary centimeter tape. All logs, as a rule, should initially be the same size, and later, depending on the project, they are sawn into the necessary elements.

So, having measured the size of the log with a tape measure, we get the length and diameter in centimeters. For example, let's try to calculate how many logs are needed for one cubic meter, if the logs are six meters long and their diameter is eighteen centimeters.

To calculate, you need the following formula:

Volume = Pi * Radius * Radius * Length.

Six meters in this case equals six hundred centimeters. Pi is always 3.14. We get the radius by dividing the diameter by two. Thus, our formula takes the following form: Volume = 3.14 * (18: 2) * (18: 2) * 600 = 3.14 * 9 * 9 * 600 = 152604 centimeters. To convert to cubic meters, divide the resulting number by one million: 152604: 1,000,000 = 0.1526. This result tells us that one log of this size will take only 0.15 cubic meters.

Now you need to figure out how many logs are in a meter. This is our main task. To do this, we will divide one cubic meter by the result of our calculations - 0.1526. It turns out: Quantity = 1: 0.1526 = 6.55 logs. It turns out that for one cubic meter, we need to take about seven logs of a given size.

If we consider the logs larger diameter, for example, twenty-four centimeters, then the calculation results will be different:

Volume = 3.14 * 12 * 12 * 600 = 271296 cubic centimeters = 0.2713 cubic meters.

This means that in one cubic meter there will be: 1: 0.2713 = 3.69 logs. In this case, there will be fewer logs in one cubic meter.

To calculate the number of logs per cubic meter, absolutely simple formula, which allows you to calculate the result in a matter of minutes. For calculations, of course, it is better to arm yourself with a tape measure and a calculator.

16.06.2014 17:04

After all the ideas for the implementation of building a house have been worked out and the final version of building a house from a rounded log has been chosen, the question arises how much such a house will cost you. To determine the cost of building a log house from rounded logs, you need to know how many cubes of logs are in this log house. In this article, we will try to explain in detail how to calculate the cubic capacity for the construction of a rounded log.

Calculation of the cubic capacity of a rounded log

The easiest way to calculate is by the formula - πr². H

Π — 3,14

r² - the radius of the rounded logs squared

H - the length of the rounded log

We substitute the data into the formula:

3.14 * (0.11 m) ² * 6m = 0.228 m3

So, we got how many cubes are in one rounded log with a diameter of 220 mm. Next, you need to calculate how many logs are in your house and multiply the resulting amount by the cubic capacity of one log (0.228 m3). It is easy to calculate the number of logs in the wall, but initially you need to determine for yourself what height the floor will be.

How to calculate the volume of a forest

It is also necessary to add 7% to the obtained height by shrinkage if the log is of natural moisture.

For example, the height of the first floor is 2.9 meters. The height of one log 220 mm minus the lunar groove will be 190.5 mm. Next, we divide the floor height of 2.9m by the thickness of the log without a groove - 0.19m, having converted all the numbers into meters in advance.

2.9: 0.19 = 15.26 pieces. We got required amount logs with a diameter of 220 mm in order to build a floor with a height of 2.9 meters. It is necessary not to forget and add 7% for the shrinkage of the house. The total is 16 crowns. Now, in order to find out the total volume of the floor of a 6x6 house, with a height of 16 crowns, you need to perform the following calculation:

16 (crowns) * 4 (walls) * 0.228 (volume of one log) = 14.6 m3 of a log. Now, to find out the cost of a rounded log for the whole frame, you need to multiply the number of cubes received by the price of a log for one cubic meter. The cost of one meter of a cubic rounded log can be found out here.

To perform calculations for other log diameters, we bring to your attention a number of pre-calculated tables, using which you will surely find answers to your questions.

The article was prepared by the company ASK Aegis which performs construction of houses from logs and renders wide range construction services in the suburban housing market.

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• How to calculate the cubic capacity of a single tree without additional measurements?
• The technology for calculating the volume of a single log
• Calculation of the volume of the stored timber
• How to calculate cubic capacity without using tables?

In the case of industrial harvesting of round timber, it is rather difficult to determine its cubic capacity. To accurately calculate the volume of each log, you can use the truncated cone volume formula, which takes into account the main diameters of both cuts and the length of the log itself.

Round wood is very convenient and practical for the construction of houses, baths and other residential and non-residential premises.

In fact, in such a complex way, the cubic size of the roundwood is not calculated. It is accepted all over the world more than fast way... Special tables are used for this.

How to calculate the cubic capacity of a single tree without additional measurements?

Cubic meter of timber and folding cubic meter of round wood.

A few years ago, to calculate the volume of a single tree, the product of the arithmetic mean of the areas of the saw cuts by the length of the tree was used. With the help of a meter (reminiscent of an ordinary caliper), the diameter of a tree in its middle part was determined. Then it was multiplied by 3 to obtain the cross-sectional area.

Further, the resulting number was multiplied by the length of the workpiece, and a volumetric result was obtained. This calculation method is inaccurate, since the thickness of the bark is not taken into account. The number Pi was taken with a large deviation from the real one, and the formula in its distorted form gave large errors.

The formula itself looks like this: the diameter of a rounded log is divided by 2 and squared, then multiplied by Pi and the length of the log.

Even if you measure the thickness of the bark and take this into account to determine the diameter of a tree, then deviations from these indicators will be inaccurate, although with a smaller error. More accurate calculations showed that the actual deviations in the calculations of the cubic capacity of a round log with primitive measurements have a certain dependence on the parameters of the tree, which was taken into account when compiling the corresponding tables to determine the volumetric parameter. Let's try to figure out how to calculate the volume of the forest. This will require:

• roulette;
• corresponding calculation tables, where there is a final cubic capacity.

The technology for calculating the volume of a single log

First, you need to use a tape measure to measure the length of the tree and its diameter on the cut in the upper part (excluding the bark). After that, let's look at the tabular parameters: at the intersection of the line, where the length of the tree is indicated, and the column with the corresponding diameter, we find the volume of the measured body. Everything is simple and reliable.

Such calculations also cannot be called absolutely accurate, since the features in which the forest was grown and the shape of the trunk are not taken into account. But it is customary not to pay attention to such trifles with large volumes of workpieces.

Calculation of the volume of the stored timber

With industrial volumes of round logs, other techniques and tabular data are used. In essence, a round woodland in the stored state has the shape of a rectangular parallelepiped. Calculations of its volume are familiar to everyone from school. But this method cannot be used, since the dimensions of the voids between the logs will not be taken into account. By the way, they also directly depend on the diameter of the logs, which lend themselves to mathematical calculus.

Through numerous calculations, a coefficient was determined with the help of which a special table was compiled. It works similarly to the previously described table, with the only difference that the volume of the mentioned parallelepiped and the average thickness of the upper cut are taken into account. The cubic capacity of the forest is calculated with great accuracy.

Types of lumber and their volume.

But one cannot hope for good accuracy of calculations in case of careless stacking of forest products. This procedure is not used for storage of timber, since in this case the volume that is occupied by round timber directly in the warehouse is estimated.

It is very easy to calculate the cubic capacity after preliminary weighing of the forest.

Roundwood cubes GOST table

How to calculate cubic capacity without using tables?

There may be a misconception that in the timber industry it is impossible to correctly and accurately calculate the volume of round timber. But this is not true, since only the primary methods of calculating the volume of round timber were considered here. In reality (especially when the timber industry is in the reliable hands of specialists) this process is much more complicated.

Later, coefficients and special formulas are applied. This work is difficult, but this is the only way to calculate the volume of round wood with a sufficiently high accuracy.