Calculate floors in a wooden house. How to calculate a square meter of a board

When implementing construction work for the construction of a residential building, a specialist must perform big number various tasks, one of which is: drawing up and calculating the estimated cost to the final finishing of the premises of a residential building. It is mandatory to calculate the required amount of various building materials, which is quite difficult to do. Therefore, such knowledge - how many boards are in a cube - has a very important for a specialist who is engaged in the construction of a residential building and wants to complete the work as efficiently and quickly as possible.

Buying club: existing types of boards

To calculate exactly how many board pieces are in a cube, you will need to know not only what exactly a board cube means, but it is worth understanding the important point that there are different kinds boards and what is possible to purchase on modern market for performing various construction works. It should be noted that the cube of almost all materials, regardless of the type of material, is calculated in the same way, that is, according to one specific method. The types of boards have no influence on the calculation of the cubic capacity of this building material.

Non-grooved types of lumber are: timber, various edged boards, as well as unedged boards (they are an exception when calculating cubic capacity, because this process occurs a little differently). Tongue-and-groove types (which have special grooves for making joints) include: modern lining, blockhouse, flooring material, as well as imitation natural timber. When you choose a tongue-and-groove type of building material to purchase, then you will need to pay attention to the fact that when making calculations, only working width boards without tenons. If we talk about a blockhouse (imitation log), then when calculating the cubic capacity, only the thickness at its highest point is taken.

How many boards are in 1 cube: performing the calculation

Any person, even from his school days, understands how cubic capacity is calculated. For this procedure, it is necessary to calculate quantities such as: length, width and height. A similar principle is used to calculate the cubic capacity of 1 board. When performing such calculations, it is recommended to convert all available values ​​into meters. The cubic capacity of 1 board, which has a cross-section of 150x20 mm. and a length of 6 m, is calculated as follows: 0.15 multiplied by 0.02 and 6, so that the cubic capacity of this board will be 0.018 cubic meters.

Let's apply the volume formula V= L*h*b (where L is length, h is height, b is width).

L= 6.0; h= 0.02; b= 0.15.

Thus, V= 6.0*0.02*0.15 = 0.018 m3.

To determine how many boards are in one cube: divide 1 m3 by cubic capacity (the volume of one board).

1 m 3 / V = ​​N pcs.

1 m 3 / 0.018 m 3 = 55.55 pcs.

Thus, the number of boards in one cube is 55.5 pieces.

Finding out the cost of a certain type of board when the values ​​of its volume is known is quite easy: 0.018 multiplied by the price of 1 cubic meter. When 1 cube of a certain type of board costs, for example, 5,500 rubles, then the cost will be 99 rubles. At this point in the calculation, there is some trick of sellers and managers in construction stores, because the cubic capacity of the material is rounded to some integer values.

Such rounding can lead to such a moment that the price of 1 board (when 1 cube costs 5500) will be completely different values. In addition to all this, it should be noted that various boards for construction, which have a nominal length of 6 meters, the actual length is 6.1 - 6.2 m, which is not taken into account when selling this building material. This also applies to the purchase significant number boards This can be seen quite clearly if we use a 150x20 mm board as an example. The number of boards in a cube is a value of 55.5 pcs. But, in a cube they count 55 pieces, which when performing the calculation will have a value of 0.99 cubic meters. In fact, it follows from this that the overpayment for 1 cubic meter of this popular building material can amount to 1% of the real price. For example, 5500 instead of 4995 rubles.

To calculate the cubic capacity for a continuous type of board, slightly different methods are used. When we are talking about buying 1 board, then measuring its thickness, as well as the total length, is carried out in the same way as when choosing edged building material. In this case, the average width is taken for calculations - between great value and small.

For example, when the width of the board at one end is 25 cm, and at the other 20, then the average value will be approximately 22 centimeters. When it is necessary to calculate the volume of a significant number of similar boards for construction, then you will need to lay them out so that the wide one does not differ from the narrow one, more than 10 cm. The main length of this material in the laid out stack should be approximately the same. After this, using a regular tape measure, an accurate measurement is made of the height of the entire existing stack of boards, and the width is measured (approximately in the very middle). The result obtained will then need to be multiplied by a special coefficient, amounting to a value from 0.07 to 0.09, directly dependent on the existing air gap.

How many boards are in 1 cube: special tables

To calculate the exact number of boards of a certain width and length in 1 cubic meter, various tables are used. Below are several such specialized tables, which indicate the cubic capacity of the common and in demand types of this material today. It is possible to calculate the volume of various boards of different sizes, for example, material for erecting a fence on your site, using the existing formula presented above.

Table of the amount of edged boards in 1 cubic meter

Board size Volume of 1st board (m 3) Number of boards in 1m 3 (pcs.) Number of square meters in 1m2
Twenty
Board 20x100x6000 0.012 m 3 83 pcs. 50 m2
Board 20x120x6000 0.0144 m 3 69 pcs. 50 m2
Board 20x150x6000 0.018 m 3 55 pcs. 50 m2
Board 20x180x6000 0.0216 m 3 46 pcs. 50 m2
Board 20x200x6000 0.024 m 3 41 pcs. 50 m2
Board 20x250x6000 0.03 m 3 33 pcs. 50 m2
Twenty-five
Board 25x100x6000 0.015 m 3 67 pcs. 40 m2
Board 25x120x6000 0.018 m 3 55 pcs. 40 m2
Board 25x150x6000 0.0225 m 3 44 pcs. 40 m2
Board 25x180x6000 0.027 m 3 37 pcs. 40 m2
Board 25x200x6000 0.03 m 3 33 pcs. 40 m2
Board 25x250x6000 0.0375 m 3 26 pcs. 40 m2
Thirty
Board 30x100x6000 0.018 m 3 55 pcs. 33 m2
Board 30x120x6000 0.0216 m 3 46 pcs. 33 m2
Board 30x150x6000 0.027 m 3 37 pcs. 33 m2
Board 30x180x6000 0.0324 m 3 30 pcs. 33 m2
Board 30x200x6000 0.036 m 3 27 pcs. 33 m2
Board 30x250x6000 0.045 m 3 22 pcs. 33 m2
Thirty-two
Board 32x100x6000 0.0192 m 3 52 pcs. 31 m2
Board 32x120x6000 0.023 m 3 43 pcs. 31 m2
Board 32x150x6000 0.0288 m3 34 pcs. 31 m2
Board 32x180x6000 0.0346 m 3 28 pcs. 31 m2
Board 32x200x6000 0.0384 m 3 26 pcs. 31 m2
Board 32x250x6000 0.048 m 3 20 pcs. 31 m2
Sorokovka
Board 40x100x6000 0.024 m 3 41 pcs. 25 m2
Board 40x120x6000 0.0288 m3 34 pcs. 25 m2
Board 40x150x6000 0.036 m 3 27 pcs. 25 m2
Board 40x180x6000 0.0432 m 3 23 pcs. 25 m2
Board 40x200x6000 0.048 m 3 20 pcs. 25 m2
Board 40x250x6000 0.06 m 3 16 pcs. 25 m2
Fifty
Board 50x100x6000 0.03 m 3 33 pcs. 20 m2
Board 50x120x6000 0.036 m 3 27 pcs. 20 m2
Board 50x150x6000 0.045 m 3 22 pcs. 20 m2
Board 50x180x6000 0.054 m 3 18 pcs. 20 m2
Board 50x200x6000 0.06 m 3 16 pcs. 20 m2
Board 50x250x6000 0.075 m 3 13 pcs. 20 m2

Table of the amount of timber in 1 cubic meter

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

Table of the amount of unedged boards in 1 cubic meter

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Calculation

Types of boards

  • Calculation of wooden floor joists

How to calculate the number of boards for the floor

Floor board, how to calculate the quantity

There are no particular difficulties in calculation required quantity floor boards, however, even in such simple calculations there are small nuances.

Calculation of floor area

1. First, it is necessary to conditionally divide the entire floor area into equal rectangles.

Having decided to purchase a floor board, you must first calculate the order volume.

A lot depends on this; the boards must be from the same batch.

Usually proceed as follows:

  • – conventionally take one room as a rectangle,
  • also take the corridor as a rectangle
  • etc.

If the room is not rectangular, then you can roughly divide it into rectangles.

Then measure the area of ​​each rectangle, having measured before:

By multiplying the length with the width, we get the area (S), which is known to be measured in square meters (m2).

2. Secondly, it is necessary to convert millimeters and centimeters to meters.

  • Recall that 1 m = 100 cm = 1000 mm.

And now let’s talk about calculating the floor area and, accordingly, the number of boards per floor.

Let's start by calculating the area of ​​the floorboard of one of the rooms:

  • It is calculated by the formula S=a h, where S is area, a is width, h is length.

For example, a room 7 meters by 5 meters is calculated as follows: S=a h=7 5=35 m2

If you have several rectangles, then you need to act in the same way as described above when finding the areas of rectangles, then add the resulting area values ​​and find the final area.

S= a1 h1+ a2 h2+ a3 h3,:

  • where S – total area,
  • a1, a2, a3 – widths of the 1st, 2nd, 3rd rectangles,
  • h1, h2, h3 – lengths of the 1st, 2nd, 3rd rectangles.
  • So, for example, the total area of ​​three rooms (1st – 3 m by 4 m; 2nd – 5 m by 4 m; 3rd – 7 m by 6 m)
  • S= a1 h1+ a2 h2+ a3 h3=3 4+5 4+7 6= 12+20+42=74 m2

Calculation of the number of linear meters of floor boards

As for the calculation of linear meters or a certain number of boards.

We calculate the total area of ​​the order as described above.

Linear meters have:

Order cost = S cost of m2 floor boards.

For example, we need 40 linear meters of floorboards, the width of which is 100 mm and the thickness of 35 mm.

  • We convert millimeters into meters 100 mm = 0.1 m, we find that S of the order is equal to the product of linear meters and the width of the board, that is, S = 40 0.1 = 4 m2
  • Price 1 m2 = 85 UAH/m2, Order cost = S order Cost = 4 85 = 340 UAH.

If the number of boards with a known length and width of the board is known, then the calculations are similar and are performed according to the formula:

  • Order S = number of boards board length board width.

If you know the total area of ​​the order and you need to calculate the number of boards, then you can use the formulas:

  • Linear meters = order S / board width,
  • Number of boards = linear meters / board length.
  • Order quantity = S order board thickness (in meters).

Edged boards are in greatest demand in the lumber market. Their distinctive feature- four-sided processing and removal of edges with tree bark. High demand for this type building materials are explained by practicality, durability, environmental friendliness and ease of use.

The main areas of application of edged boards are construction and furniture production. In construction this material can be used for laying floors, ceilings, erecting walls and stairs. IN furniture production boards are used to create solid wood furniture.

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Calculation

  • Calculate the surface area that needs to be covered (for example, 10*10=100 m²);
  • Calculate the area of ​​one board (for example, with board parameters of 20cm*5cm*2000 cm, the area of ​​one board will be equal to 0.2m*2m=0.4m²);
  • Divide the surface area by the area of ​​one board (100 m²/0.4 m²=250 pieces).

To calculate the number of boards when purchasing in cubes, you must:

  • Calculate the required number of boards (divide the surface area by the area of ​​one board);
  • Calculate the required cubic capacity by multiplying the parameters of the board by the required quantity (for example, you need 20 pieces of boards with a parameter of 20 cm * 5 cm * 2000 cm, which means the required volume is 20 * 0.2 * 0.05 * 2 = 0.4 m³). In this case, all values ​​must be converted from centimeters to meters.

Types of boards

There are so many types of boards that differ in purpose and technical characteristics. Depending on the degree of humidity there are:

  • Raw - boards natural humidity. Can be used in the construction of low-critical structures.
  • Dry - industrially dried. Drying is carried out to avoid deformation of the board and prevent rotting.

Depending on the quality of the boards, the material is distinguished:

  • Selected grade - used in the automotive industry and shipbuilding;
  • First grade - in addition to shipbuilding and the automotive industry, it is used in construction and furniture production;
  • Second grade - used in the same areas as first grade material;
  • Third grade - production of furniture and packaging products;
  • Fourth grade - used for the production of containers and packaging.

    Calculation of floor boards: calculator, how to calculate

According to the type of cut, the boards are divided into:

  • Radial - the cut passes in the middle of the trunk, at an angle of 90⁰, due to which the material has high strength and moisture resistance;
  • Semi-radial - the cut is cut at an angle of 45⁰, the material is of an average price category;
  • Tangential is the most economical type of cut; boards of this type are more susceptible to moisture. Possible deformation when drying.

Calculator for the number of boards in 1 cube.
Table of lumber sections.

Calculator for calculating the number of boards (timbers) in one cubic meter by cross-section and length

ANSWER: 0 pieces in one cube

The calculator knows the number of boards (timbers) - how many cubes are these?

ANSWER: such boards (timbers) are 0 m3 costing 0 rubles

Table of standard sizes of sections of boards and timber.

Sections of boards and beams have standard sizes, which correspond to GOST 24454-80 "Lumber coniferous species. Dimensions"

Thickness, mm Width, mm
16 75 100 125 150
19 75 100 125 150 175
22 75 100 125 150 175 200 225
25 75 100 125 150 175 200 225 250 275
32 75 100 125 150 175 200 225 250 275
40 75 100 125 150 175 200 225 250 275
44 75 100 125 150 175 200 225 250 275
50 75 100 125 150 175 200 225 250 275
60 75 100 125 150 175 200 225 250 275
75 75 100 125 150 175 200 225 250 275
100 100 125 150 175 200 225 250 275
125 125 150 175 200 225 250
150 150 175 200 225 250
175 175 200 225 250
200 200 225 250
250 250

Table of how many 6 meter boards are in one cube

For boards standard length 6 meters is calculated in the following table.

We calculate the number of boards - degree of humidity, calculation per piece

Lumber of small sections available in retail sales is, of course, less than 6 meters. Usually this is 3 m or 2.5 m. To calculate the number of any non-standard sizes use the calculator at the top of the page.

No. Section size, mm Length, mm Quantity in 1 cube, pcs Area that can be sewn using 1 cube, m2
1 16x75 6000 138,89 62,50
2 16x100 6000 104,17 62,50
3 16x125 6000 83,33 62,50
4 16x150 6000 69,44 62,50
5 19x75 6000 116,96 52,63
6 19x100 6000 87,72 52,63
7 19x125 6000 70,18 52,63
8 19x150 6000 58,48 52,63
9 19x175 6000 50,13 52,63
10 22x75 6000 101,01 45,45
11 22x100 6000 75,76 45,45
12 22x125 6000 60,61 45,45
13 22x150 6000 50,51 45,45
14 22x175 6000 43,29 45,45
15 22x200 6000 37,88 45,45
16 22x225 6000 33,67 45,45
17 25x75 6000 88,89 40,00
18 25x100 6000 66,67 40,00
19 25x125 6000 53,33 40,00
20 25x150 6000 44,44 40,00
21 25x175 6000 38,10 40,00
22 25x200 6000 33,33 40,00
23 25x225 6000 29,63 40,00
24 25x250 6000 26,67 40,00
25 25x275 6000 24,24 40,00
26 32x75 6000 69,44 31,25
27 32x100 6000 52,08 31,25
28 32x125 6000 41,67 31,25
29 32x150 6000 34,72 31,25
30 32x175 6000 29,76 31,25
31 32x200 6000 26,04 31,25
32 32x225 6000 23,15 31,25
33 32x250 6000 20,83 31,25
34 32x275 6000 18,94 31,25
35 40x75 6000 55,56 25,00
36 40x100 6000 41,67 25,00
37 40x125 6000 33,33 25,00
38 40x150 6000 27,78 25,00
39 40x175 6000 23,81 25,00
40 40x200 6000 20,83 25,00
41 40x225 6000 18,52 25,00
42 40x250 6000 16,67 25,00
43 40x275 6000 15,15 25,00
44 44x75 6000 50,51 22,73
45 44x100 6000 37,88 22,73
46 44x125 6000 30,30 22,73
47 44x150 6000 25,25 22,73
48 44x175 6000 21,65 22,73
49 44x200 6000 18,94 22,73
50 44x225 6000 16,84 22,73
51 44x250 6000 15,15 22,73
52 44x275 6000 13,77 22,73
53 50x75 6000 44,44 20,00
54 50x100 6000 33,33 20,00
55 50x125 6000 26,67 20,00
56 50x150 6000 22,22 20,00
57 50x175 6000 19,05 20,00
58 50x200 6000 16,67 20,00
59 50x225 6000 14,81 20,00
60 50x250 6000 13,33 20,00
61 50x275 6000 12,12 20,00
62 60x75 6000 37,04 16,67
63 60x100 6000 27,78 16,67
64 60x125 6000 22,22 16,67
65 60x150 6000 18,52 16,67
66 60x175 6000 15,87 16,67
67 60x200 6000 13,89 16,67
68 60x225 6000 12,35 16,67
69 60x250 6000 11,11 16,67
70 60x275 6000 10,10 16,67
71 75x75 6000 29,63 13,33
72 75x100 6000 22,22 13,33
73 75x125 6000 17,78 13,33
74 75x150 6000 14,81 13,33
75 75x175 6000 12,70 13,33
76 75x200 6000 11,11 13,33
77 75x225 6000 9,88 13,33
78 75x250 6000 8,89 13,33
79 75x275 6000 8,08 13,33
80 100x100 6000 16,67 10,00
81 100x125 6000 13,33 10,00
82 100x150 6000 11,11 10,00
83 100x175 6000 9,52 10,00
84 100x200 6000 8,33 10,00
85 100x225 6000 7,41 10,00
86 100x250 6000 6,67 10,00
87 100x275 6000 6,06 10,00
88 125x125 6000 10,67 8,00
89 125x150 6000 8,89 8,00
90 125x175 6000 7,62 8,00
91 125x200 6000 6,67 8,00
92 125x225 6000 5,93 8,00
93 125x250 6000 5,33 8,00
94 150x150 6000 7,41 6,67
95 150x175 6000 6,35 6,67
96 150x200 6000 5,56 6,67
97 150x225 6000 4,94 6,67
98 150x250 6000 4,44 6,67
99 175x175 6000 5,44 5,71
100 175x200 6000 4,76 5,71
101 175x225 6000 4,23 5,71
102 175x250 6000 3,81 5,71
103 200x200 6000 4,17 5,00
104 200x225 6000 3,70 5,00
105 200x250 6000 3,33 5,00
106 250x250 6000 2,67 4,00

Calculation of boards for the floor is important point at the stage of renovation or construction of a house.

Scheme for calculating boards on the floor.

The board is optimal material for subfloor.

But before you buy it, it is important to make a careful calculation, otherwise it may happen that too many units are purchased and the large sum money. Those who think that if there is a shortage of coating there is always the opportunity to purchase the missing part of the material, you need to know that for a successful installation process they must be from the same batch. The most popular options for laying floors are the following types wood: wooden beams, unedged, edged and planed boards. In each individual case, the required amount of lumber is calculated differently. This is due to the fact that each material has individual characteristics that must be taken into account during the calculation.

So, how can you make the correct calculation of the amount of lumber?

Find out the size of square meters

Scheme for calculating the required amount of boards for the floor.

  1. To do this, the room is conventionally divided into a rectangle, if it does not have a strict rectangular shape, then it is divided into several rectangular parts, which are then measured. The measurements are designed to find out the area of ​​the room. The following formula will help you find it out: S = a×b, where S is the area, a is the width of the room, b is its length. The result will show you the required amount of square meters of coverage that needs to be laid on the floor.
  2. If the room does not have a rectangular shape, the area is calculated for each rectangle separately, after which the resulting figures must be added.

    Calculator for joists and floorboards

    For example: S = (a1×b1) + (a2×b2) + (a3×b3), where S is the final area, a1, a2, a3 is the width of 1, 2, 3 rectangles, b1, b2, b3 is the length of 1 , 2, 3 rectangles. You can use these calculations not only when the room is not rectangular, but also if you need to calculate the total amount of material in several rooms at once.

We calculate linear meters

In order to find out how many boards are enough to cover the floor, a ready-made rule will help you:

S = a×b = width wooden beam× linear meters.

Finding out the number of boards it will take to cover the floor is quite easy. To do this, you will need to use the following calculation: S = a×b×number of lumber.

Or with ready-made calculations:

Quantity=Sum of linear meters/b

So, to successfully calculate how much lumber it will take to cover, you will need the following:

  • availability of ready-made formulas;
  • calculator;
  • information about segments a and b in the room;
  • information about the thickness of the timber, its length and width;
  • roulette;
  • pencil and notepad.

Thus, anyone can carry out the calculations. Having the necessary formulas at hand and having minimal knowledge of mathematics, you can easily find out the square footage of the required lumber for lining the floor.

How to calculate the quantity and volume of lumber for the construction of your house, bathhouse, veranda

The first step is to decide on the scope of work and the materials from which you will build a house, a bathhouse or add a veranda. Coniferous lumber is best suited for any construction. Coniferous wood is light in weight, has natural antiseptic properties, and is most resistant to our climate.

If you have capital construction, then you will definitely need timber. But what size depends on your plans. For one-story light buildings, you can buy timber with a thickness of 100-150 mm. For taller and more permanent buildings, a thickness of 200 and above is required. It is also worth deciding on the construction budget. The most popular timber is planed. Its advantage is the lowest cost. It has a clear geometry and is easy to work with. Houses made of planed timber have good thermal insulation and accumulate less moisture. However, buildings made from such timber shrink slightly when dried. Therefore, do not rush to make a decision, think carefully about what you want to get as a result.

If you need wall cladding, flooring or an extension summer veranda, then you will need a board, edged or unedged

How to calculate the cubic capacity of lumber

Before starting any construction, it is important to correctly calculate the lumber. How much timber do you need to buy to build walls or make support structures, how many boards do you need to cover required quantity square meters, it is easy to calculate.

Calculation of floors, joists and floorboards

We multiply the length and width of the board and get the area of ​​one board. It is more difficult to calculate how many cubes of lumber need to be purchased at production. This information will be useful both for beginners in construction and for customers who want to control construction crews and be aware of the costs of building materials. After all, builders often cheat and include in the estimate much more lumber than is needed for the construction of one project. It’s not hard to guess where the surplus goes. Knowledge of basic calculations will allow you to avoid fraud and achieve high-quality work.

Lumber for the construction of load-bearing structures – timber, boards large section– are calculated and sold not by piece, but in cubic meters. The price in the price lists is indicated specifically per cubic meter of lumber. Correct calculation will help avoid extra expenses for construction and will not allow a shortage of material when you need to pay for another delivery and interrupt the work. Experienced craftsmen Usually they take lumber with a small reserve.

The calculation of cubic capacity depends on the type of lumber.

timber and edged board have clear geometric contours and constant values ​​of length, thickness and width. Calculating the cubic capacity here is simple: you need to multiply three known dimensions of the board, you get the cubic capacity of one board. To find out the number of pieces in a cube, you need 1 cubic meter divide by the cubic capacity of the board.

It is important to know that cubic capacity is determined by GOSTs; you can use lumber tables with ready-made calculations.

Table of cubic capacity of planed timber GOST

Enterprises that have been operating in the market for a long time and value their reputation strictly comply with all GOST requirements, and when purchasing lumber, the quantity will be clear and predictable.

An unedged board is not processed on the sides; different parts of logs are used on it, so its width is not constant. Therefore, it is only possible to calculate the volume of lumber needed by calculating the cubic capacity of one board only approximately.

For covering surfaces, piece lumber is used - small-section edged boards, planed boards, lining, imitation timber.

Experienced craftsmen quickly produce everything necessary calculations. For those who do not have much experience, it is better to contact specialists to avoid mistakes and correctly determine the type of lumber and its required volume. The greatest and most reliable information about lumber is possessed by manufacturers, and not by employees of resale companies. Therefore, for advice, consultation and purchase, it is better to contact the manufacturers.

The employees of our company “Industrial Integrated Technologies” will help you produce everything necessary calculations and decide on the amount of lumber. We are not trying to sell you as much timber or board as possible. Our task is to make your construction or renovation the least expensive and to provide you with high-quality softwood lumber in the quantity you need. We will deliver the goods to any point in the Vladimir, Moscow, Ryazan, Nizhny Novgorod, Ivanovo, and Yaroslavl regions. The cities closest to us are Kolchugino, Alexandrov, Kirzhach, Vladimir, Yuryev-Polsky.

Calculating the boards for the floor, at first glance, is not a problem. Multiplying the length of the room by its width and dividing by the width of the board is the fastest answer you will hear.

With all the diversity modern coatings floor from natural wood is still very much in demand.

What type of wood should I choose?

  1. Coniferous trees are often chosen for flooring: pine, fir, spruce. They are suitable for rooms with light loads.
  2. Alder or aspen are recommended for use in rooms where increased home safety. Such rooms are considered to be children's rooms and bedrooms. Alder and aspen are considered medicinal species.
  3. The strongest and most durable floor is oak. Expensive, but has a dense structure.
  4. Siberian larch competes with oak. It is just as hard and does not rot thanks to the resins. Suitable for all floors, even wet baths. It costs three times more than pine.
  5. Beech, birch and alder can also be used for baths.
  6. Only in non-residential premises Poplar and linden can be used, but smereka is not suitable at all - it is too soft.

Pine will last at least 50 years, and oak - more than 100.

Floors are laid according to special rules. In the direction of movement in those rooms where people have to walk a lot: in vestibules and corridors, hallways of public premises. For bedrooms and living rooms, a different method is chosen. The floors are installed, focusing on the light from the window, in its direction.

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Basic board parameters

Typically, boards 20-40 mm thick are used. There is an opinion that floors made from thicker boards are stronger. It must be taken into account that the properties of such natural material, like wood, depend on the degree of drying. An insufficiently dried thick board may, when drying naturally, tear out the screw with which it is secured. Therefore, it is more practical to use material with a thickness of 20-25 mm.

You might be interested in: How to lay floor tiles correctly?

The width of the floorboard ranges from 100 to 200 mm. Considering the previous remark, it is better to opt for 100 mm.

At sawmills there are boards 6 in length; 4.5; 4.3 m. If you plan to lay it with an offset, then the length can not be taken into account. With this method, the labor intensity of the work will be higher due to the larger number of joints, but there will be less scraps left. If you are laying boards without offset, you should choose the length of the board according to the length or width of the room. Of course, the board must be tongue-and-groove.

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Which type of wood to choose?

The choice of wood type depends on the financial capabilities of the developer and on what it will be covered with: paint or varnish.

The varnish emphasizes the structure of the wood, shows natural beauty material. Premium quality boards are made without knots and have a special cut for them.

But first-grade boards are not much inferior to them. When cutting, live knots are provided in them.

There are many dark knots on the surface of second-grade boards. It is better to paint such floors. For technical and utility rooms, you can use not always even and cheaper third-grade boards.

The calculation of the board is made in square meters, pieces or cubic meters. For example, you need to calculate how much wood material required for a room of 5x4 m. We calculate the area using the classic formula, multiplying the length by the width:

5x4 m = 20 square meters.

Having chosen a board 0.1 m wide and 4 m long, we calculate:

20:4:0.1 m = 50 pcs.

If the thickness is 25 mm, you get:

20x0.025 m = 0.5 cubic meters m.

Answer: you need 20 sq. m or 50 boards 0.1 m wide, 4 m long, 0.025 m thick, which corresponds to 0.5 cubic meters of wood. This number of boards is enough to complete the task.

Natural wood floors are not cheap. But if we take into account the impact on health, there is still no alternative to them.

One of the most popular solutions for the device interfloor ceilings in private homes is the use load-bearing structure from wooden beams. It must withstand the design loads without bending and, especially, without collapsing. Before you begin constructing the floor, we recommend using our online calculator and calculating the main parameters of the beam structure.

Beam height (mm):

Beam width (mm):

Wood material:

Pine Spruce Larch

Wood type (see below):

Wood type:

Wood type:

Span (m):

Beam pitch (m):

Reliability factor:

1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0

Necessary explanations for calculations

  • Height and width determine the cross-sectional area and mechanical strength beams.
  • Wood material: pine, spruce or larch - characterizes the strength of the beams, their resistance to deflection and fracture, and other special operational properties. Usually preference is given to pine beams. Larch products are used for rooms with a humid environment (baths, saunas, etc.), and spruce beams are used in the construction of inexpensive country houses.
  • The type of wood affects the quality of the beams (as the grade increases, the quality deteriorates).
    • 1st grade. On each one-meter section of timber, on any side there can be healthy knots measuring 1/4 of the width (face and edge), and 1/3 of the width (edge). There may also be rotten branches, but their number should not exceed half of the healthy ones. It should also be taken into account that the total dimensions of all knots in an area of ​​0.2 m must be less than the maximum width size. The latter applies to all grades when it comes to load-bearing beam structures. There may be plate cracks measuring 1/4 of the width (1/6 if they extend to the end). The length of through cracks is limited to 150 mm; first grade timber can have end cracks up to 1/4 of the width. The following wood defects are allowed: tilting of the fibers, tilt (no more than 1/5 of the side area of ​​the beam), no more than 2 pockets, one-sided growth (no more than 1/30 in length or 1/10 in thickness or width). Grade 1 timber may be affected by fungus, but no more than 10% of the lumber area; rot is not allowed. There may be a shallow wormhole on the wane parts. To summarize the above: appearance such timber should not cause any suspicion.
    • 2nd grade. Such a beam can have healthy knots measuring 1/3 of the width (face and edge), and 1/2 of the width (edge). For rotten knots, the requirements are the same as for grade 1. The material may have deep cracks up to 1/3 the length of the timber. Maximum length through cracks should not exceed 200 mm; there may be cracks at the ends measuring up to 1/3 of the width. Allowed: inclination of fibers, heel, 4 pockets per 1 m., sprouting (no more than 1/10 in length or 1/5 in thickness or width), cancer (extending up to 1/5 of the length, but not more than 1 m) . Wood can be affected by fungus, but not more than 20% of the area of ​​the material. Rot is not allowed, but there can be up to two wormholes in a 1 m area. To summarize: grade 2 has borderline properties between 1 and 3, and generally leaves a positive impression upon visual inspection.
    • 3rd grade. Here the tolerances for defects are greater: the timber can have knots measuring 1/2 the width. Face cracks can reach 1/2 the length of the lumber; end cracks measuring 1/2 the width are allowed. For grade 3, it is allowed to bend the fibers, tilt, pockets, core and double core, sprouting (no more than 1/10 in length or 1/4 in thickness or width), 1/3 of the length may be affected by cancer, fungus, but not rot are allowed. Maximum amount wormholes - 3 pcs. per meter To summarize: grade 3 does not stand out the most even to the naked eye best quality. But this does not make it unsuitable for the manufacture of floors on beams. For more information about the varieties, read GOST 8486-86 Softwood lumber. Technical specifications;
  • Span - the distance between the walls across which beams are laid. The larger it is, the higher the requirements for the supporting structure;
  • The pitch of the beams determines the frequency of their laying and largely affects the rigidity of the floor;
  • The reliability factor is introduced to ensure a guaranteed safety margin for the floor. The larger it is, the higher the safety margin

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


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

Important to know: when buying a board from valuable breed Wood products are sold individually. The thing is that the price of such coatings is too high, and when calculating in cubes there is a small error.

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


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

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

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

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

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

Calculation example

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

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

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