Board 100x20 how many pieces in a cube. How many timber is in a cube: calculation methods and examples of calculations. Mathematical model for calculating the number of bars in a cube

Starting to design a house, a separate item will be the estimate of the project. It is not difficult to compose it, knowing how to correctly calculate how much material is required for construction and how much it will turn out in total. Today we will deal with the issue, in the solution of which there are difficulties for beginners buying lumber. The timber is in demand when building a house, a bathhouse or other buildings. But not everyone knows how many timber in a cube. It's important though. Knowing the formula for calculating the amount of certain materials, you always buy as much as you need, without running around looking for missing items, or throwing away the excess.

All lumber is sold in cubes or linear meters. Any purchase requires knowledge, attention, so as not to get into a mess. There are sellers or manufacturers looking to get more value from the sale of lumber. The product is sold in cubes, and not everyone will tell you the exact amount of timber or boards. Beams and other lumber have a different size range. Therefore, the number of parts in one pack may be different. Using the formula, you can easily calculate the amount of any lumber in a cube. We will take as a basis an element with a section of 100 * 100 and a length of 6 meters. We need to find out how many pieces of timber will be in one cube.

First, let's calculate the cubic capacity of one piece of a given size. It is necessary to multiply all values: 0.1 * 0.1 * 6 \u003d 0.06 m3 in one bar. Now we find out how many such elements are in one cube: A \u003d 1 / 0.06 A \u003d 16.66 pieces. A is the value of the number of parts in one cube. We learned that in one cube of lumber with a cross section of 100 * 100, 6 m long, there are only 16 pieces with a remainder of 0.66. General formula may look like this: A \u003d 1 / (a \u200b\u200b* b * c) where: A is the number of parts of any lumber in a cube; a - part width; в - the height or thickness of the part; c - part length. Using such a simple formula, you can find out how many boards, beams, logs, etc. should be in one cube. But sometimes the manufacturer does not produce all parts of the same length. Variations are possible +/- 100 mm.

What does it mean? For example, a board or timber instead of the declared 200 * 200 * 6000, may be 195 * 195 * 6050. This is possible due to the fact that the manufacturer does not align the ends of the blanks to the same standard. So it turns out that some boards are of the same size, and some in a pack have a difference. But the whole pack is counted as a cube. In such situations, it is better to make trial measurements of sample lumber to be sure of the quality and quantity of the goods. But don't think that all manufacturers or sellers are trying to cheat the customer. Serious companies value their reputation, strive for a single standard

Ease of use of a calculator or tables

Calculating lumber by hand is not always convenient. You can use a calculator for calculating the amount of a particular material or wood volume. On our website there is a convenient calculator that will allow you to easily set the necessary calculation parameters and get the desired result. When making a construction estimate, use the calculator on our website, so as not to look for a desktop calculator. In electronic form, it is convenient to change any parameter, leaving others unchanged. Then calculating the required volume or quantity of lumber in pieces will not seem difficult, incomprehensible. It is very convenient and fast.

Tables of exact calculations of the number of different lumber

You can use the tables, which indicate the values \u200b\u200bfor boards, timber for various purposes, scope. Find the required column and row of the table, get the exact value. For example, the table shows that a 150 * 150 bar can have different lengths from 2 to 6 meters. Cubic capacity of one part of different lengths will differ, which will affect the amount of timber in one cubic meter. With a length of 2 meters, the cubic capacity of one board of a bar will be 0.045 m3, and in 1 m3 there will be 22 solid boards 2 meters long, 14 pieces 3 meters long, 7.5 pieces 6 meters long.

It's pretty simple. Below we present tables of lumber used in construction wooden house, roof, finishing rough and final floor, ceiling. Please note that lumber can be either standard size with a specific price or custom made to order. The cost of non-standard timber is higher than for standard material. Values \u200b\u200btable standard sizes timber number 1

W - the width of the bar;
G - the depth of the bar;
D is the length of the bar.

Table of values \u200b\u200bof non-standard dimensions of a bar No. 2.

Bar of non-standard size (W * D * D mm)	Volume of 1 piece in m3	Number of pieces in 1m3
90902000/3000/6000	0,0162/0,0243/0,0486	61,73/41,16/20,58
90*140	0,0252/0,0378/0,0756	39,7/26,46/13,23
90*190	0,0342/0,0513/0,1026	29,24/19,5/9,75
100*250	0,05/0,075/0,15	20/13,34/6,67
100*300	0,06/0,09/0,18	16,67/11,11/5,56
140*140	0,0392/0,0588/0,1176	25,5/17/8,5
140*190	0,0532/0,0798/0,1596	18,8/12,53/6,3
150*250	0,075/0,1125/0,225	13,34/8,9/4,45
150*300	0,09/0,135/0,27	11,11/7,4/3,7
190*190	0,0722/0,1083/0,2166	13,85/9,23/4,6
200*250	0,1/0,15/0,3	10/6,67/3,34
200*300	0,12/0,18/0,36	8,33/5,56/2,8
250*300	0,15/0,225/0,45	6,67/4,45/2,23
300*300	0,18/0,27/0,54	5,56/3,71/1,86

When designing a house from a bar, it is necessary to lay in the estimate not only the bar for the box, but also all the additional elements required for lumber:

boards;
beams;
rafter system;
roof lathing.

Knowing the required number of parts for the floor, roof, ceiling, ceilings, you do not have to hire a car for each material separately. You can buy everything at once from one seller, possibly getting a discount. Select the appropriate size to find out how many boards are in one lumber cube. Table of values \u200b\u200bof consumable lumber: boards, bars No. 3

Board (W * D * D mm)	Volume of 1 piece in m3	Number of pieces in 1m3
221006	0,0132	75,8
221506	0,0198	50,5
222006	0,0264	37,9
251006	0,015	66,7
251506	0,0225	44,5
252006	0,03	33,34
321006	0,0192	52
321506	0,0288	34,7
322006	0,0384	26
401006	0,024	41,67
401506	0,036	27,8
402006	0,048	20,8
501006	0,03	33,34
501506	0,045	22,23
502006	0,06	16,67
Floor board
361066	0,0229	43,7
361366	0,0294	34
451366	0,0375	26,7
Bar
40403	0,0048	208,3
50503	0,006	166,7
40803	0,0096	104,16
50503	0,0075	133,4

Thus, the tables help to correctly calculate the amount of lumber needed to build a wooden house. A person with information cannot be deceived even by a cunning seller. But knowing the formula presented at the beginning of the article, you can calculate how many planks of timber in one cubic meter on the spot purchase of goods.

What else affects the amount of lumber and other lumber?

Do not forget about the properties of wood when calculating necessary materials for building a house. Any tree dries out over time or gains moisture. Depends on the storage conditions of the lumber. When buying or calculating a timber of natural moisture, it is necessary to lay an additional amount of boards. The timber can dry out during preparation for construction. Then the material will not be enough for the planned frame, floor, roof. The number of elements will not change, and the size of the parts may change significantly in depth and height. The length usually does not change with wood.

In order not to be mistaken at the time of design, take a timber with a margin of 4-5 pieces, or buy dry lumber, its volume will not change much. The volume of laminated veneer lumber is practically unchanged, the production of which involves the use of only dried lamellas. But each bar must be calculated not only in piece quantities, but also in volume. When ordering a car for delivery of material to the object, you need to know the volume so that the car is not small for delivery.

It is easy to calculate the volume of goods, knowing the mathematical formula or using the calculator on the site. V \u003d (A * B * C) * K, where V is the total volume; A - the height of one part; B is the width of one part; C is the length of one part; K is the number of parts. For example, you need to find out how much the volume of 30 pieces of timber will be 200 * 200 * 3000 mm. We translate each parameter into a meter. V \u003d (0.2 * 0.2 * 3) * 30 V \u003d 3.6 m3. For delivery, you will need a car with a side length of at least 3 meters and a van volume of 3.6 m3. For the rest of the product, it is also easy to calculate the total volume, add it to the volume of the timber. If the boards are 6 meters long, it is not supposed to cut them, the length of the board must be at least the length of the product. The protrusion of long bars with an identification mark is allowed.

How much does the lumber weigh in grams?

An equally important indicator is how much a bar or board weighs. This is necessary for calculating the foundation of a wooden house. Any log, board, timber put pressure on the foundation. If the weight of the future box with all load-bearing elements, furniture, people, etc. is calculated incorrectly, there will be a danger of destruction of the base of the house. This will lead to serious consequences. Many construction companies, offering ready-made house kits or lumber for construction, calculate the load of a wooden structure on the foundation themselves. But you can do all the calculations yourself, having at hand a piece of paper, a pen, a calculator and the exact values \u200b\u200bof material properties.

The weight of the wood changes. It depends on the influence of the environment, the growing area, the type of wood and processing technology. Wood of natural moisture is an order of magnitude heavier than dry timber or boards. But the tree shrinks, leading to a decrease in the load on the base of the house, to a decrease in the dimensions of the building. It is more profitable to buy lumber in dry form, it weighs less, but its price will be higher than the details of natural moisture. Most often, the timber is made from coniferous wood, less often from larch, cedar. Each tree has its own density, weight. Most high density for larch - about 700 kg / m3; spruce and pine 460 and 530 kg / m3. These are average figures. It all depends on the growing conditions of the tree. Knowing the density of the timber, it is easy to calculate how much the box weighs by multiplying the density by the volume of all material for the walls, and multiplying the figure by 2. For example, a box of a house made of timber requires 20 m3 of lumber. The house is built from pine, the density of which is 530 g / m3. (20 * 530) * 2 \u003d 21 200 kg - the weight of the structure pressing on the foundation. If the house has four walls, one wall has a weight of 5300 kg, which is important when calculating the foundation. (coefficient \u003d 2 - additional mass of the house, tenants without load-bearing walls; walls are calculated by the total weight of the lumber around the perimeter).

So, we figured out several important digital values \u200b\u200bfor timber and other lumber used in construction. Using our recommendations, having studied the tables, or using a calculator for calculating the amount of timber, you can independently calculate the required amount of material and its weight per foundation. By owning the formulas, you can save on the services of designers and not be deceived by sellers. By reviewing the information on prices for timber or boards from different manufacturers, you can compile a financial statement of construction costs. Lumber is sold at a price of one cubic meter or running meter... You can pay only for the amount of material that was originally calculated, and not overpaying for waste. Share the information you have received with friends who are planning the start of construction, so that they know how much timber is in a cube, how much one timber or board costs. Here is a table of average prices for timber.

Be careful when choosing building material... Knowing simple things will save your budget and not make unnecessary movements.

Buying materials by eye is nonsense, and no self-respecting owner will do this. In order to correctly make an estimate and estimate how much the construction will result in or overhaul, you need to determine how much you need this or that product. It is more difficult with boards - they are not sold by the piece, but released (as well as stocked) in batches, the volume of which is expressed in m³. But the number of pieces, as a rule, is "tied" to the area covered, that is, to m². Let's figure out how to determine how many boards will be in one cube.

Why boards are exactly 4 and 6 meters? The calculation method below does not change for any length. The fact is that the indicated parameters are the most "popular" ones. Manufacturers are guided by the dimensions of platforms and freight cars, so it is more profitable for them to supply boards with a length of 6 m. But the buyer is more interested in boards of four meters in length, since a truck with an elongated body is enough for their transportation.

To transport 6 meter boards, you need a road train; This means that the cost of delivering lumber to the site will increase. And the maneuverability of such a transport is significantly limited. For example, it makes no sense to deliver boards on it to a summer cottage, given the narrowness of the lanes.

The procedure for calculating the number of boards in a cube

You just need to remember high school... The so-called "cube" (the common name for a volume measure) is the product of the linear parameters of any volumetric object. That is, its length, width and height (in this case, thickness).

Measurement is made of the edges of one of the boards in the stack. It turns out the width and thickness. The length is known - 4 or 6 m.
All measured parameters are converted into one dimension. Since we are talking about a cube, that is, m3, all of them (including width and thickness) are indicated in meters.
The "cubic capacity" of the workpiece is determined.
1 m³ is divided by the obtained value. The result is the number of boards in a cube.

The numerator of the fraction does not have to be exactly 1. Planks are stored in different ways, and lumber in such quantities is not always required. If there is 0.8 cubic meters in a stack, then this is its volume.

Example. A board is bought 6 m, by 25 mm, 20 cm wide, in the amount of one cube.

We convert the values \u200b\u200binto meters: thickness - 0, 025, width - 0.2.
Determine the cubic capacity of the board: 6 x 0.2 x 0.025 \u003d 0.03 m³.
We calculate the number of samples - 1: 0.03 \u003d 33, (3).

Calculator for calculating the amount and volume of lumber

If the received value is fractional, then the result is always rounded to the nearest whole value. That is, only the numbers preceding the comma are taken into account. This is the accepted norm!

These tables will help you determine the approximate number of boards in a cube, without resorting to calculations.

The calculation algorithm is the same for all sawn timber of this group, regardless of their characteristics - wood type, degree of drying.
The tabular values \u200b\u200bare purely indicative, since they do not quite correctly reflect the real number of boards in a cube. Firstly, a lot depends on the stacking, that is, how tightly the boards fit. Secondly, nothing is said about the quality of workpieces processing (whether they are edged or not). Thirdly, it is not a fact that upon careful inspection a certain number of boards will not be rejected due to detected defects. Therefore, it is always necessary to reduce the number obtained by calculation. If the board is edged - by about 10%, in the case of unedged board - by 15 - 20%.

All photos from the article

To calculate how many timber in a 200x200 mm cube, you need to know its length, which in most cases is standard, it is 4, 5 or 6 meters. In addition, such material can be cut from one, two, three or four longitudinal sides, which also determines the quantity in one cube.

But we will be looking at exactly four-sided cropping. We will also pay attention to other sizes, and in addition we will show you a video in this article.

Glued and solid timber

Note. accept the name of a solid or glued profile with a cross section of at least 100 × 100 mm. If the material is thinner, then the instruction calls it a board.

Table

Dimensions in mm	Volume of 1 piece in m 3	Number of pieces in m 3
100x100x6000	0,06	16
100x150x6000	0,09	11
150x150x6000	0,135	7
100x180x6000	0,108	9
150x180x6000	0,162	6
180x180x6000	0,194	5
100x200x6000	0,12	8
150x200x6000	0,18	5,5
180x200x6000	0,216	4,5
200x200x6000	0,24	4
250x200x6000	0,3	3
150x150x4000	0,09	11
200x200x4000	0,16	6

In order to build a house, you need to know how much timber is 200x200x6000 in a cube. And for this you can use the table above.

As you can see, its amount will differ greatly, and this depends not only on the cross-section of the material, but also on its length. It will be important for you to take into account the installation location, since one section is needed for load-bearing walls, another for partitions, and a third for the floor and roof.

If you know how many pieces of timber are 200 by 200 in a cube, pay attention to its length. As you can see, there are 4 pieces of six-meter profiles, and 6 pieces of four-meter profiles.

This is important because the house can be over 6m in length and then you will have to join it. Consequently, more material will be consumed due to joints and cuttings.

For example, for a wall of 10m, two pieces of 6 and 4 meters are not enough - after joining, it will turn out to be no more than 9.8m, and then you need to take 6 and 5 meters, and cut off the excess. Also, you can always calculate on your own how many bars are 200 by 200 in a cube - for this you only need to find out the volume of 1 piece.

For example, 0.2 * 0.2 * 6 \u003d 0.24m 3, then if you divide 1/024 \u003d 4.1, that is, it is actually 4 pieces. Knowing the area of \u200b\u200bthe walls of the building, you can always find out the amount of material, and then translate it into cubes for ease of purchase.

When you use solid wood, you will have to do all of its cutting with your own hands and in these cases it is purchased with a margin. For example, one more cube, since defective profiles are possible there, and the trimmings will go into this stock.

But if you decide to build a house from laminated veneer lumber, then its manufacturer usually offers already cut material, which you just need to assemble in the form of a constructor according to numbers and a list from each package.

Benefits

Benefits from edged sawn timber:

first of all, it is the simplicity of assembling architectural structures, because a square or quadrangular profile is much easier to stack on top of each other than logs;
also in log buildings, due to a tight fit, shrinkage is less than in log buildings;
there is also a mercantile calculation - the price here will be less than that of;
you can build a building of almost any configuration - the timber is more flexible for different forms and transitions;
the thickness of the walls of such houses is greater than that of frame buildings, which makes them warmer and adds duration in operation

Construction technologies

To build a house, you need to know several parameters, these are:

dimensions of the future room, and what kind of material you will use;
how many timber in 1 cube 200x200 - you can use the table or calculate it yourself, as we have already done;
the location, number and area of \u200b\u200bwindows and doors that will need to be subtracted from the total length.

Let's calculate how much material we need for a building with dimensions of 6 × 8m and a height of 2.8m. With this height, we get 2.8 / 0.2 \u003d 14 rows for each wall.

This means that 2 six-meter walls will need 14 + 14 \u003d 28 pieces. But on an eight-meter wall, you need to take the same amount of a four-meter beam to join it in the span, then we get 28 + 28 \u003d 56 at 6m and 28 pieces at 4m.

If we leave the section 200 × 200 mm, then we will need 56/4 \u003d 14m 3 for six-meter profiles, and 28/6 \u003d 4.66m 3 for four-meter profiles. But these are rough dimensions - from them you need to subtract the amount of materials that will not go to technological openings - windows and doors.

In the photo - the rows are fastened with dowels

Solid timber, unlike glued one, is fastened together with dowels every one and a half to two meters, at all joints and at the corners through two rows to the third. To do this, a hole is drilled in the wood, which should not be less than the dowel itself in diameter and more in depth by 15-20 mm. The fact is that in a year and a half the house will shrink by 5-10% and if such a screed is very dense, then the profiles will simply hang on these nails.

In the intervals between the rows, linen or jute tape is laid for compaction, and sometimes a small overlap is left on the outside. This overlap is then used for caulking, but if it is not done, then you can caulk with tow.

Conclusion

Wood, whether solid or glued, is always afraid of moisture, so it is very important to treat the building with an antiseptic to protect it from rotting and fungal mold. Also, to reduce the combustibility, lumber is sometimes treated with fire retardants, which can be combined with bactericidal agents - the cost is slightly higher, but you only need to apply once.

To simplify the calculation, we have prepared a summary table for you. The tables below show data on the volume of one bar and how many pieces of bar different sizes in the 1st cube. To make it convenient for you.

How many pieces of edged and profiled timber in 1 cube table

Dimensions , mm	Volume of boards in 1 m 3	Number of boards in m 3
100x100x6000	0.06 m 3	16 pcs.
100x150x6000	0.09 m 3	11 pcs.
150x150x6000	0.135 m 3	7 pcs.
100x180x6000	0.108 m 3	9 pcs.
150x180x6000	0.162 m 3	6 pcs.
180x180x6000	0.1944 m 3	5 pieces.
100x200x6000	0.12 m 3	8 pcs.
150x200x6000	0.18 m 3	5 pieces.
180x200x6000	0.216 m 3	4 things.
200x200x6000	0.24 m 3	4 things.
250x200x6000	0.3 m 3	3 pcs.
250x250x6000	0.375 m 3	2 pcs.
250x300x6000	0.45 m 3	2 pcs.
300x300x6000	0.54 m 3	1 PC.

How to calculate how much timber is in 1 cube?

We offer a simple calculation so that you do not get lost with the question of how to find out how much timber is in a cube. These calculation options are suitable if you know the dimensions of the timber. For example, let's take a bar 260 x 260 x 6,000 mm (6 meters). The same can be done for a bar measuring 3 meters, 4 meters, 5 meters.

The formula for calculating the volume of a bar:
100mm 100mm 6000 mm \u003d 0.1m 0.1m 6m \u003d 0.06 m 3

The formula for calculating the timber in pieces:
Timber length - 6 meters
1m 3 / 0.06m 3 \u003d 16 pcs / m 3

Hard? It seems to be not! But if the calculation causes you difficulties, just use our table. The table contains a calculation for all known beam sizes, which are given in GOST 8486-86.

The page contains answers to simple questions from people:

How many timber
How many cubes of timber
How many pieces of timber cube
How much timber is needed
How many in one cube
How many pieces in a cube
How many bars in a cube
How to calculate how much timber is in 1 cube

Why know how much timber is in 1 cube?

There are two reasons for this:

You can immediately calculate the total price of the volume of timber you need. To do this, you need to know the volume of 1 piece of timber, the price for 1 cubic meter and how many pieces will be needed to implement your plans.
You can calculate the total number of timber units needed to complete the project. And this can be done, knowing how many cubes are required for work, and calculating the number of pieces of timber in 1 cube.

The master must not only perfectly master certain skills in his own profile, but also be able to calculate the amount of material for carrying out certain work. For example, a bricklayer can use a quick calculation necessary minimum bricks or blocks and the number of planks for the wood builder.

The lack of elementary mathematical skills does no credit to the master who does not know how many pieces of timber or how much wood he will need. During a period of high prices, customers do not want to pay for unnecessary goods, which will then lie dead in the closet. Likewise, the client will doubt the ability of the builders if they buy a little lumber, because re-delivery is an extra cost.

The minimum set of mathematical knowledge

In order to correctly determine the amount of material that will be needed in the process of work, another 15% is added to the calculated number (length, area, volume). That is, if construction requires 2 cubes of boards, then you need to buy 2 + 0.15x2 \u003d 2.3 cubes. In this case, you do not have to go for the missing wood. It is assumed that the calculations are correct.

Area (S) is calculated by simple multiplication of length and width. If the area of \u200b\u200bthe room is 5 by 3 m, then S \u003d 5x3 \u003d 15 (m²).
The volume (V) is found by multiplying the area by the height: V \u003d Sхh or by multiplying three linear dimensions (length, width, height).
The volume of the same room 5 m by 3 m with a height of 2.7 m will be V \u003d 15x2.7 \u003d 40.5 (m³) or 5x3x2.7 \u003d 40.5 (m³).
If you want to find V of a bar with a section of 150x150 6 m, then we multiply its dimensions, having previously expressed them in meters. 150 mm \u003d 0.15 m. V \u003d 0.15x0.15x6 \u003d 0.135 (m³).
With a beam length of 4 meters, we have a different result: V \u003d 0.15x0.15x4 \u003d 0.09 (m³).

How many pieces of timber are contained in one cube?

For those who own the formulas described above, the calculations will not cause difficulties. Finding out how much timber is in a cube is very simple: you need to divide 1 cube by the volume of 1 timber. Example:

1. A bar measuring 150x150x6000. The volume of 1 bar is 0.135 m³, so in a cube there will be 1 / 0.135 \u003d 7.407 pcs.

2. With dimensions 100x150x6000, we carry out calculations: 1 item - 0.1x0.15x6 \u003d 0.09 m³, respectively a cube - 1 / 0.09 \u003d 11.11 pcs.

3.100x100x6000. 1 item - 0.1x0.1x6 \u003d 0.06 m³, cube - 1 / 0.06 \u003d 16.666 pcs.

It makes no sense to carry out calculations every time if you have a table of the number of timber in a cube at hand for 4.5, 6 and 7 meters - the most common lengths. They give rounded to hundredths the number of boards with sections from 100x100 to 200x200 with a step of 50 mm. But for a length of 4 meters, you can draw up a table yourself, then formulas come to the rescue, as in any other non-standard case.

Dimensions, mm	Volume of 1 piece m³	Number of pieces in 1 cube
Length 4 meters
100x100	0,04	25
100x150	0,06	16,67
100x200	0,08	12,5
150x150	0,09	11,11
150x200	0,12	8,33
200x200	0,16	6,25
Length 6 meters
100x100	0,06	16,67
100x150	0,09	11,11
100x200	0,12	8,33
150x150	0,135	7,41
150x200	0,18	5,56
200x200	0,24	4,17

Several nuances:

1. Calculation for all materials with grooves, spikes and other fastening systems is carried out only on the working surface.

2. When buying the required amount boards, you need to follow the rounding carried out by the seller. At the price of one cubic meter in 6-10 thousand rubles, even 0.01 cubic meters will "tighten" by 60-100 rubles, not to mention more significant "errors" on the part of the manager.

3. Having in hand a table for calculating the timber, the buyer will protect himself in case the sale is in m³, and the seller in 1 cubic meter with dimensions, for example, 100x100x6000, will have 15 boards instead of 16.67.

Price table

In the assortment of many suppliers, all standard sections of the bar are available. In this case, they simply do not indicate specific dimensions.

Name	Dimensions (mm), length - 6 meters	Price per rub / m³
edged GOST 8486-86, needles	100x150	6 300 – 7 500
edged, needles	100x100	6 350
edged, T / U	150x150	4 700 – 5 100
cedar, natural moisture	150x150	9 500 – 16 800
larch, natural moisture	150x150	9 800
edged, needles, planed	75x150	from 7 200
unplaned, needles	length 2-6 m, all sections	6 200
profiled dry, pine	150x150	from 7 800
profiled dry, pine	140x185	12 000