Download the table of volumes of edged lumber 6 meters. Calculation of lumber in one cube. Characteristics of wood materials

Content:

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

What is a cubic meter of edged boards?

How many edged boards are in one cube - Photo

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

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

W * H * D = volume.

Everything is calculated in meters

To find out how many boards are in one cube:

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

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

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

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

Board dimensions	Volume of one board	Boards in 1m3 (cube)
20×100×6000	0.012 m³	83 pcs.
20×120×6000	0.0144 m³	69 pcs.
20×150×6000	0.018 m³	55 pcs.
20×180×6000	0.0216 m³	46 pcs.
20×200×6000	0.024 m³	41 pcs.
20×250×6000	0.03 m³	33 pcs.
25×100×6000	0.015 m³	67 pcs.
25×120×6000	0.018 m³	55 pcs.
25×150×6000	0.0225 m³	44 pcs.
25×180×6000	0.027 m³	37 pcs.
25×200×6000	0.03 m³	33 pcs.
25×250×6000	0.0375 m³	26 pcs.
30×100×6000	0.018 m³	55 pcs.
30×120×6000	0.0216 m³	46 pcs.
30×150×6000	0.027 m³	37 pcs.
30×180×6000	0.0324 m³	30 pcs.
30×200×6000	0.036 m³	27 pcs.
30×250×6000	0.045 m³	22 pcs.
32×100×6000	0.0192 m³	52 pcs.
32×120×6000	0.023 m³	43 pcs.
32×150×6000	0.0288 m³	34 pcs.
32×180×6000	0.0346 m³	28 pcs.
32×200×6000	0.0384 m³	26 pcs.
32×250×6000	0.048 m³	20 pcs.
40×100×6000	0.024 m³	41 pcs.
40×120×6000	0.0288 m³	34 pcs.
40×150×6000	0.036 m³	27 pcs.
40×180×6000	0.0432 m³	23 pcs.
40×200×6000	0.048 m³	20 pcs.
40×250×6000	0.06 m³	16 pcs.
50×100×6000	0.03 m³	33 pcs.
50×120×6000	0.036 m³	27 pcs.
50×150×6000	0.045 m³	22 pcs.
50×180×6000	0.054 m³	18 pcs.
50×200×6000	0.06 m³	16 pcs.
50×250×6000	0.075 m³	13 pcs.

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

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

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

• 0.032 * 0.2 * 6 = 0.0384 cube

30 boards will have the volume

• 0.0384 * 30 = 1.152 cubes

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

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

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

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

Covered area of ​​edged board

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

W * D = area.

Having calculated the area to be covered, all that remains is to multiply it by the desired board thickness

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

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

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

Determining the volume of an unedged board

How many unedged boards are in one cubic meter - Photo

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

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

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

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

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

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

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

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

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

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

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

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

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

Calculation of the amount of timber in one cube - Photo

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

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

W * T * D = timber volume, m3.

To find out how much timber is in one cube

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

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

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

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

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

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

1 meter of such timber will have the following volume.

0.18 * 0.18 * 1 = 0.0324 m3.

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

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

How many logs are in one cube: calculation - Photo

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

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

A section of a trunk for manual trimming has the shape of a slightly truncated cone, so the formula for the volume of a cylinder is used, but with some features.

3.14 * r 2 * L = log volume, m3

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

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

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

Blanks for construction logs are measured in the same way.

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

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

In the process of erecting wooden structures, a variety of wood is used. When purchasing it, there is a need to measure it correctly. The main difficulty in carrying out this operation lies in non-standard sizes, shape, quality and weight of such building materials. It is quite difficult for a beginner to correctly calculate the amount of lumber. Therefore, tables for calculating the cubic capacity of lumber come to the rescue, with the help of which it is much easier to make all measurements. The main thing is to know what building materials you need to build this or that wooden structure.

Geometric characteristics of building materials

Buying wood nowadays is not a big problem. Its selection is simply huge, but this fact does not always make the task of choosing the right lumber easier. It is very difficult for a person who has little understanding of the quality and type of wood not to be deceived. The type of wood used, the conditions for its processing, storage and geometric characteristics There is a huge variation in both price and product quality.

If the width of the longitudinal cut of a building material is 10 cm or more, then it is called timber. This material has the following geometric characteristics: 10x10, 10x15, 15x15 and 18x18 cm with a length of 6 m.

A 10x10 cm beam can be used to build a summer house or bathhouse, since living in such a building in winter will be cold and uncomfortable. If you plan to live in the house year-round, then timber with a cross-section of 10x15, 20x20 cm or larger is suitable for such purposes.

In the process of designing a future building, you should take into account that the standard length of the timber is 6 m. Therefore, if you are planning to build a house with large sizes, then you will need to order non-standard ones or make a longitudinal joint of the beam, which in both cases will lead to additional waste of money and effort.

If the width of the lumber differs from the thickness by more than 2 times, then such wood is called a board. Their standard thickness is 25, 40, 50 mm, and the width is 100 and 150 mm with a length of 6 m. For laying floors, boards with a width of 85 to 140 mm and a thickness of 27, 37 and 45 mm are used.

Return to contents

What determines the calculation of lumber cubic capacity?

When calculating the required amount of wood, it is necessary to take into account some features applicable to existing rules sales of lumber. They are quite complex to implement, so even companies involved in monitoring the sale of such materials are not always able to assess the accuracy of their sales. Main feature is that wood is not calculated by weight or piece, but is measured in cubes.

In some cases, manufacturers of building materials deliver them to supply points when the cubic capacity and price have already been calculated. This can significantly simplify the calculation process. But such situations are very rare, so you almost always have to do everything yourself.

The calculation of cubic capacity can be affected by the quality of the board’s processing, its grade and type.

In 1 m3 it is possible to have boards of different quality. To carry out the calculation, you must select the method by which this operation will be carried out. The first is a separate measurement of the volume of each board followed by a summation operation. The volume of lumber is calculated using the formula: V = a*b*c, where V is the volume of material, a is length, b is width, c is board thickness.

The second is the use of a special table for calculating cubic capacity per 1 m of length or per 1 piece. This table allows you to calculate the amount of lumber per 1 m3. To use the data from the table, you also need to adhere to some rules in measuring lumber:

• the width of an edged board with non-parallel edges is measured in the middle of the length;
• the thickness of the material is measured anywhere, but no closer than 15 cm from the end;
• For each parameter, rounding is performed, the value of which is individual for a particular case. It can be either up to 0.001 or up to 0.01.

Return to contents

Tables for calculating cubic capacity of lumber

To understand the entire calculation technology, an example will be considered in which it is necessary to construct wooden house measuring 6x6 m and ceiling height 2.2 m. The house is planned to be made of timber with a section of 20x20 cm and a length of 6 m.

First you need to calculate the required number of beams (excluding doors and windows). To do this, the height of the future building should be divided by the height of the beam: 220/20 = 11 pcs. That is, to build one wall you need to prepare 12 elements (11 beams and one base crown). Next, the result obtained is multiplied by 4 walls: 12*4 = 48 pcs. Then you should calculate how much it will be in m3: 48*0.2*0.2*6 = 11.52 m3.

When making calculations, it is worth considering one nuance: in 1 m 3 of timber with a cross section of 20x20 cm and a length of 6 m there are 4.17 elements. Many sellers round this value to 4. Therefore, if for the given example we calculate the number of beams at the rate of 4 pieces per 1 m 3, we will get: 11.52 * 4 = 46 pieces, that is, 2 pieces will not be enough.

To implement more accurate calculation You can use tables to calculate the cubic capacity of lumber. The table for calculating the cubic capacity of edged boards is shown in Fig. 1. In Fig. Figure 2 shows a table for calculating the cubic capacity of clean-cut timber.

In the woodworking industry there is the concept of folded and dense cubic meters. The price list for lumber shows values ​​in dense mass, so folded meters must be converted into dense ones. For this purpose, special coefficients are used. For example, for lumber less than 2 m long, the coefficient is 0.48, and for wood more than 2 m long - 0.43.

By selecting the right type building materials and implementing correct calculations, you can calculate the exact amount of lumber required for the construction of a wooden structure. At the same time, you can save your money on a possible excess of wood or on additional delivery in case of shortage.

Construction work requires solving many different issues, among which the most important task is the selection and purchase of lumber. Calculate how much linear meters boards and timber will be needed during the construction process, it’s not difficult. But the price of industrial wood is indicated per 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 allow you to save money and avoid a situation where, after completion construction work There is a pile of unused boards left on the site.

Classification and characteristics of lumber

The very name “lumber” suggests that this type of construction raw material is obtained by longitudinal sawing of tree trunks on circular or band saws. Several cutting methods are used to produce boards and timber:

• tangential (in a circle),
• radial.

Tangential cutting involves moving the saw tangentially to the annual rings of the tree, which reduces the amount of 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 the wood to shrink and swell, as well as a significant difference in texture as it approaches cutting tool to the center of the log.

In the sawmill industry, several methods are used for sawing a trunk.

At radial sawing the cutting line passes through the core of the tree, so the yield of boards will be smaller, and their price will be higher. However, if it is necessary to obtain high-quality wood, this method is used. This is due to the fact that, compared to the tangential method, radial sawing boards have halved swelling and shrinkage rates. In addition to the cutting methods discussed above, they also use mixed method, which combines the advantages of the first two.

The concept of lumber actually includes not only traditional timber, which is most often seen in construction markets. The full list of products obtained from sawing logs includes:

• board;
• beam;
• bar;
• lagging;
• croaker

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

Boards

Boards include rectangular lumber with a thickness of no more than 100 mm and a width to thickness ratio 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 smoothly sawn edges, while the second is a “semi-finished product”, removed directly from the saw frame.

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

The most commonly used boards in construction are the following 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 in increments of 250 mm.

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

Unedged boards have a lower cost, but without finishing its scope of application is limited

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

timber

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

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

The bar differs from the beam discussed above only in that its cross-section does not exceed 100x100 mm. The typical length of the bar is also 6 m, and the diameter ranges from 40 mm to 90 mm in increments of 10 mm. To simplify the classification, bars are often classified as slats with a rectangular cross-section and a thickness-to-width ratio of at least 1:2. The standard range of edges for softwood slats 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.

Obapole and croaker

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

Despite their external ugliness, croaker and obapole are widely used for minor construction tasks

Technology for calculating the number of boards in a cube

The wood market offers both edged lumber and unedged boards, with wane remaining on the edges. Depending on the type of wood products, several methods are used to determine cubic capacity.

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

The algorithm for determining the cubic capacity of lumber is based on the formula for finding volume known to every schoolchild rectangular parallelepiped. In order to find out the cubic capacity of one board (V) per cubic meter. m, you need to find the product of its length (a) by its 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 into one cubic meter of lumber. For this, 1 cu. 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 by 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.

A 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 cross-sectional size of tongue-and-groove lumber 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 stack of lumber into the formula. Of course, its installation should be as tight as possible, otherwise the gaps between separate elements will affect the accuracy of the calculations. Considering that the cost of individual types of wood reaches tens of thousands of rubles, such an error can cost a pretty penny.

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

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

Board size, mm	Number of boards 6 m long in 1 cubic. m	Volume of one board, cubic meters. m
25x100	66,6	0.015
25x150	44,4	0.022
25x200	33,3	0.03
40x100	62,5	0.024
40x150	41,6	0.036
40x200	31,2	0.048
50x100	33,3	0.03
50x150	22,2	0.045
50x200	16,6	0.06
50x250	13,3	0.075

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

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

Beam size, mm	Number of products 6 m long in 1 cubic. m	Volume of 1 beam, cubic. m
100x100	16.6	0.06
100x150	11.1	0.09
100x200	8.3	0.12
150x150	7.4	0.135
150x200	5.5	0.18
150x300	3.7	0.27
200x200	4.1	0.24

Very often it is necessary 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 40 mm board will be enough to arrange S = 1/0.04 = 25 square meters. m of floor. To facilitate the process of calculating the area, a table called a cubeturner allows you to simplify the process of calculating the area. It contains data on the cross-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 lumber is not trimmed at the edges, so not only the cross-sectional size of individual products varies, but also the width different parts one board. In this regard, it is possible to calculate the volume of a stack of unprocessed lumber only approximately. The same applies to calculating the cubic capacity of individual unedged lumber, although the error in this case will be much smaller.

So, to calculate the cubic capacity unedged boards There are two constant quantities - 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 average is found. For example, for a board with a diameter of 400 mm at the base, a width of 350 mm in the middle and 280 mm in the top, calculated value will be (430+340+260)/3=343 mm. Further calculations are carried out in exactly the same way as for edged lumber.

Most often, the width of an 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, so in critical cases their number is increased.

If you need to find out 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:

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

By measuring the height, length and width of a package of unedged wood with a tape measure, the approximate cubic capacity is determined using the formula V=a×b×h. To find out more exact value, the resulting result is multiplied by the stacking coefficient, which can be found in special tables.

We will send the material to you by e-mail

When starting construction, any House master one day he is faced with the need to purchase boards. And this is where the fun begins. Having calculated the required quadrature by width and length, the beginner grabs his head - what to do? After all, such material in construction markets is sold by volume, not by area. Today we will try to figure out how many boards are in a cube (a table of average values ​​will also be provided by us) and how to make all the calculations ourselves. Also at the end of the article there will be an online calculator that will allow you to perform all the necessary calculations without any problems.

It is important to know not only the size of the lumber, but also its volume

Everyone understands that the shape and size of the lumber will determine how many cubic meters will be needed for a particular construction. But first you need to understand what types and types of material can be found. The main ones can be identified:

• Edged timber;
• Planed timber;
• Planed block;
• Edged block;
• Edged and floor boards;
• Unedged materials.

Each of these types has its own characteristics and is used in its own area. For example, there is no way to build a frame without it, but covering a wall with it is the height of irrationality. To do this, we will now consider each of these types separately.

Edged timber and its areas of application

Edged timber is used in cases where appearance Aesthetics are not that important. It may have cracks that appear during the drying process after processing. It is made by sawing out the central part from an ordinary log, and only after that it undergoes minimal drying. Although such lumber is considered expensive, it is still cheaper than planed products.

Planed timber: what is its difference from edged timber

The differences here are fundamental. If for the production of the previous version no preparation of the log is required, then for planed it is first dried, and only after that it goes to the sawmill. The surface of this product is smooth and polished. This type of timber can even become a good decorative element. Simply put, if it is necessary to erect walls for finishing, edged timber is purchased, but planed timber does not require finishing. It can simply be varnished. If we talk about strength, it is less for a planed product.

Planed timber - what is its difference from timber

At their core, these are the same thing, the only difference is in size. The timber has a lower rib height, which means it is not suitable for constructing the frames of buildings or residential buildings. More often this material is used for decorative purposes. It also finds application in the installation of frames for interior decoration or reinforcing lintels of various wooden panels. The difference between edged and planed timber and the same types of timber is the same.

Edged and floorboards: their features and differences

The differences between these lumber are also noticeable at first glance. The edged board is not planed. It has an even shape but, at the same time, is in no way suitable for finishing. In contrast, the floor has three smoothly processed edges (except for the lower wide one) and often has a groove on one side and a tenon on the other on the narrow sides. This is done to connect them more tightly to each other, as well as to reduce loads and eliminate deformation of the floor during operation.

Unedged materials - what are they?

These are the cheapest products. When sawing a log, only two opposite sides. Thus, the edges of the boards are uneven. More often, such lumber is used for rough construction.

How many boards per cubic meter: table of standard sizes

Some people ask an interesting question - how much? square meters cubed. In fact, it is impossible to answer it! After all, in order to determine this, you need to at least know the thickness of the board. Without this parameter, no calculations will be possible. Let's try to understand how to calculate cubic capacity.

This does not present any great difficulties, but it requires care. We need to understand how many boards are in a cube. And to do this you need to calculate the cubic capacity of one of them by size. For example, a board with a cross-section of 1000x250 mm and a length of 4 m. Then the calculations, after converting the units of measurement into meters, will be as follows: 0.1 × 0.025 × 4 = 0.01 m 3. This will be the answer to the question of how to calculate the cubic capacity of the board.

How many boards are in a cube: table of average values

For example, there are boards with certain sizes. How to calculate a cube of such lumber by the number of boards? You can use the following table:

Board size, mm	Volume of 1 board, m3	Number of boards in 1 m3, pcs.	Volume of overpayment when rounded down, %
25x150x4000	0,015	66,7	1
40x150x4000	0,024	41,6	0,7
20x100x6000	0,012	83,3	2,8
25x100x6000	0,15	66,7	1
40x100x6000	0,024	41,6	0,7
50x100x6000	0,03	33,3	1
25x150x6000	0,025	44,4	1
30x150x6000	0,027	37,04	0,01
40x150x6000	0,036	27,8	2,9
50x150x6000	0,045	22,2	0,9
25x200x6000	0,03	33,3	1
40x200x6000	0,048	20,8	3,8
50x200x6000	0,06	16,7	4,2

It is important to know! To calculate how many square meters are in a cubic meter, you need to know all the dimensions of the board. Without information about length, width and thickness, nothing will work.

Average weights at different humidity levels

Breed name	Crude, kg/m3	Dry, kg/m3
Birch	880	650
Oak	990	720
Spruce	710	450
Cedar	700	440
Larch	840	670
Linden	750	500
Aspen	750	500
Pine	810	510
Ash	960	700

It turns out that one cube of ash will be much heavier than the same volume of linden. This should be kept in mind when planning your transportation.

How to correctly calculate the amount of material

Let's look at how to correctly calculate how many pieces of boards there will be in one cubic meter. This is done according to the following formula:

1 m 3 / (L × h × b) = N pieces , Where

• L – length of the board;
• h - width;
• b – thickness.

As you can see, the calculations are not at all complicated.

Helpful information! If they say that an inch board is needed, its size will be as follows: width - 75-250 mm, length - 2000-6000 mm, but the thickness is always standard - 25 mm. This size name can often be heard in construction markets.

Board cubic capacity calculator or how to make calculations easier

The algorithm itself for how to calculate a cubic meter by quantity is probably now clear. But there is not always a desire to engage in various calculations. And it’s quite easy to make a mistake here. Now we will tell you how to calculate cubeboards without making complex calculations.

For such cases there are special programs, called cubic meter calculators. Why are they convenient? The main advantage of such programs is their accuracy. The calculator for calculating a board in a cube is devoid of the human factor, which eliminates the possibility of errors in the calculation process. Another rather weighty argument in its favor is the speed of calculations. You just need to enter the correct data in the appropriate fields and click on the “calculate” button. Nothing more is required from the user. The online calculator of boards in a cube will instantly give the result by quantity.

When constructing a cottage or house, the master, by necessity, performs many different tasks. He thinks through all the construction processes and draws up the necessary estimates for each of them. Calculate the correct quantity necessary materials not easy. This requires knowledge of mathematics. He must know: how many boards are in 1 cube, how many, and so on. If he has such knowledge, then that’s great! He is a real master!

But for an ignorant person, “how many boards are in a cube” is an abstract concept. In order for him to understand it, he must know exactly what it is Construction Materials made of wood. What are they, how are they measured? Without knowing this, he will not be able to adapt to these calculations.

Edged or tongue-and-groove, as well as other types of lumber

The first thing you need to understand is that it is not so important from which forest exactly this or that material was made. The boards may not be the same, but their calculations will be completely identical. Let them have different varieties, different sizes, the calculation is still carried out according to the same principle. It's still wood and will be measured the same way! It can only determine how many boards there are in 1 cube will be different each time. Regardless of whether it is edged or tongue-and-groove, cylindered, etc. the calculation will be the same.

Non-grooved lumber - different timber, edged materials, their non-edged counterparts, this is the case when their cubic capacity is calculated completely differently! These products have grooves and tenons. They are intended for joining between forest units. Such products include:

• blockhouses;
• floor material;
• imitation of various timber.

When purchasing such a grooved one, you should take into account the circumstance. When calculating cubic capacity, you need to take only the working width of the beam. The spike is not taken into account here. And when calculating the cubic capacity of a blockhouse, which can imitate a log, one should take into account its thickness, which it has at its highest point.

Examples of calculations using formulas for the volume of 1 m3 of timber, as well as price comparison

Any specialist has known since school exactly how to calculate the cubic capacity or how many boards are in 1 cube. To do this, you need to find the product of 3 quantities: height, length, width. The same method is used to calculate the cubic capacity of a unit. When making calculations, it is more convenient to immediately convert the parameters into the value “Meter”.

For example, the cubic capacity of a unit of material having a length of 6 m and a cross-section of 150x25 is calculated as follows: 0.15 m x 0.025 m x 6 m;

The formula we will calculate is this: V= L*h*b (where L – length, h – height, b – width)

The calculation results in 0.0225 m3. This is the cubic capacity of one product. If you want to know the cost, then 0.0225 must be multiplied by the cost of 1 cubic meter. After calculations, it turns out that if we miss it, the cube will cost 6,500 rubles. And the price of one of them will be 146 rubles. 25 kopecks Here, for the ignorant people, lies a little trick of the sellers.

Typically, cubic capacity can be rounded to 0.023. This means that lumber will cost the buyer 149 rubles. 50 kopecks Sometimes unscrupulous sellers can round up a cubic capacity with a size of 150x50 mm to approximately 0.05 m3. But if all calculations are performed correctly from the very beginning, it turns out that with correct calculation the result is only 0.045 m3.

It seems, so what, someone will say! The numbers are small, but the result is stunning! Such rounding will involuntarily lead only to the fact that the unit price will already be 325 rubles. instead of 292 rub. 50 kopecks And these calculations are carried out taking into account that the price of a cube is 6,500 rubles.

In addition, you also need to know and take into account that boards with a nominal length of 6 m actually have a length of 6.1-6.2 m. This should not be taken into account when selling lumber! Sometimes customers may ask to know how many boards are in a cube. This applies to purchasing more boards.

Everything can be clearly seen from the example of purchasing boards with dimensions of 150x25 mm, where their number in a cube is 44.4. But still, most often only 44 boards are considered a cube. And if calculated correctly, this amount is listed as 0.99 m3. In reality, it turns out to be an overpayment for 1 cubic meter. It is approximately 1% of its initial cost. It will look like this: what instead of 6435 rub. for 1 cubic meter the cost will be 6,500 rubles.

The volume of unedged timber is calculated in a completely different way. If you buy one of them, then measure its thickness and length as accurately as for edged lumber. But its width is taken as average. That is, it is between the smallest and the largest. Example: at one end its width is 30 cm, and at the other about 15 cm, then to calculate the cubic capacity this parameter will be 22-23 cm.

If you need to find out the volumes of a large number of timber or determine how many boards there will be in volume, they should be laid out in stacks. But so that the widest of them does not differ from the narrowest by more than 10 cm. In such a stack, their length should be the same. But this is only approximately! After this, you need to use a tape measure to measure the height of the stack and its width. These measurements are taken somewhere in the middle, the same applies to length.

The resulting calculation result should be multiplied by a coefficient. It ranges from 0.07 to 0.09. It depends on the air gap, which is between the material. When performing calculations, the larger the gap, the lower the coefficient taken. If it has the same dimensions, then you can determine the number of boards in the cube.

By the way, for such calculations there are special tables in builders’ textbooks. Similar tables exist for almost all lumber starting from and ending with. They indicate the cubic capacity of common types of timber or other types. And calculating the volume of boards, for example, for a fence, is not difficult! You can use the above formula yourself!

Performing calculations according to the table for timber of a standard length of 6 meters

We will determine how many pieces of boards are in a cubic volume using a special table

Size	Volume of 1 piece	Pieces per 1 m³	m² to 1 m³
20×100×6000 mm	0.012 m³	83 pcs.	50 m²
20×120×6000 mm	0.0144 m³	69 pcs.	50 m²
20×150×6000 mm	0.018 m³	55 pcs.	50 m²
20×180×6000 mm	0.0216 m³	46 pcs.	50 m²
20×200×6000 mm	0.024 m³	41 pcs.	50 m²
20×250×6000 mm	0.03 m³	33 pcs.	50 m²
25×100×6000 mm	0.015 m³	67 pcs.	40 m²
25×120×6000 mm	0.018 m³	55 pcs.	40 m²
25×150×6000 mm	0.0225 m³	44 pcs.	40 m²
25×180×6000 mm	0.027 m³	37 pcs.	40 m²
25×200×6000 mm	0.03 m³	33 pcs.	40 m²
25×250×6000 mm	0.0375 m³	26 pcs.	40 m²
30×100×6000 mm	0.018 m³	55 pcs.	33 m²
30×120×6000 mm	0.0216 m³	46 pcs.	33 m²
30×150×6000 mm	0.027 m³	37 pcs.	33 m²
30×180×6000 mm	0.0324 m³	30 pcs.	33 m²
30×200×6000 mm	0.036 m³	27 pcs.	33 m²
30×250×6000 mm	0.045 m³	22 pcs.	33 m²
32×100×6000 mm	0.0192 m³	52 pcs.	31 m²
32×120×6000 mm	0.023 m³	43 pcs.	31 m²
32×150×6000 mm	0.0288 m³	34 pcs.	31 m²
32×180×6000 mm	0.0346 m³	28 pcs.	31 m²
32×200×6000 mm	0.0384 m³	26 pcs.	31 m²
32×250×6000 mm	0.048 m³	20 pcs.	31 m²
40×100×6000 mm	0.024 m³	41 pcs.	25 m²
40×120×6000 mm	0.0288 m³	34 pcs.	25 m²
40×150×6000 mm	0.036 m³	27 pcs.	25 m²
40×180×6000 mm	0.0432 m³	23 pcs.	25 m²
40×200×6000 mm	0.048 m³	20 pcs.	25 m²
40×250×6000 mm	0.06 m³	16 pcs.	25 m²
50×100×6000 mm	0.03 m³	33 pcs.	20 m²
50×120×6000 mm	0.036 m³	27 pcs.	20 m²
50×150×6000 mm	0.045 m³	22 pcs.	20 m²
50×180×6000 mm	0.054 m³	18 pcs.	20 m²
50×200×6000 mm	0.06 m³	16 pcs.	20 m²
50×250×6000 mm	0.075 m³	13 pcs.	20 m²

Video on calculating lumber in a cube using formulas and tables