How many boards in a cube: how to make calculations using various methods. Calculation of the cubature of lumber How to calculate the cubature of the edged board formula

When roundwood is harvested, first of all they try to accurately calculate its cubic capacity.

The measurement is made in the upper cut, where the diameter will be slightly smaller. When measuring trunks that have a cross section other than round, they try to measure along the narrowest section, passing through the center of the annual wood rings.

This technique is used because it allows you to most accurately estimate how much edged lumber will be obtained from one log, which is of the greatest value in woodworking. Obviously, they will be cut based on the diameter of the upper cut.

For the same reason, the ridged part of the trunk, where the difference between the larger and smaller diameters of the cut is large, is preferred to be discarded and not used in the workpiece. All the same, wood will be taken at the sawmill along the upper cut.

When determining the length, measurements are taken with an accuracy of 10 cm, while the length is rounded down. Such accuracy is due to the fact that when felling logs, two cuts are usually made - one higher, the other lower. First do the bottom, then the top - on the other side. falls in the direction where the top of his head leans. The cuts are made so that the bottom one is on the side where the trunk should fall.

In this case, the upper cut is made on the other side, standing in the direction opposite to the most likely fall. During subsequent sawing, the whip is usually sawn with a saw for one cut, but often a cut error is allowed - it can go a little obliquely, because of this, such a large error.

Calculation by cube

In accordance with it, it is possible to determine the volume of each log by taking measurements and selecting a value from the table. In the table, the diameter of the trunk comes in increments of 1-2 cm, and the length is 10 cm. Of course, using the entire cubature table is not very convenient.

This table provides data for the most common top cut diameters and lengths. Usually it is required to calculate the volume for logs up to 6 meters long. It is logs of this length that fit into most standard standard bodies of ordinary ones that are not specialized as timber trucks or timber trailers for tractors, it is in the size of up to 6 meters that the whips are crossed.

Naturally, when the forest is handed over to the sawmill, there is no question of any “approximate” calculations, and it is necessary to apply the full GOST in the final calculation - after all, these are sawmills and the money of foresters who love accurate counting.

Calculation by formula

V=πd²l/4, where d is the diameter of the trunk in the upper cut, l is the length of the log, π = 3.14 - for our calculations, the greater accuracy of this constant is not needed.

This is convenient when there is no GOST at hand, but only. With large volumes of work, even from three or four machines, it will take a lot of time to calculate in this way, in addition, this technique is not standardized and is not an argument in financial disputes.

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

ANSWER: in one cube 0 pcs

The calculator knows the number of boards (beams) - how many cubes is it?

ANSWER: such boards (beams) are 0 m3 worth 0 rubles

Table of standard sizes of sections of boards and timber.

Sections of boards and timber have standard dimensions that correspond to GOST 24454-80 "Softwood lumber. 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 how many 6 meter boards in one cube

For boards with a standard length of 6 meters, the following table is calculated. Lumber of small sections available in retail sales is of course less than 6 meters. This is usually 3 m or 2.5 m. Use the calculator at the top of the page to calculate the number of any custom sizes.

No. p / p	Section size, mm	Length, mm	Quantity in 1 cube, piece	The area that can be sewn up 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	32х275	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	44х275	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

Content:

The seller and buyer of timber pursue their own interests. In such a rather delicate matter, one must have certain - simple - knowledge. Today everyone has a tool: a calculator in the phone.

What is a cubic meter of edged board

How many edged boards in one cube - Photo

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

Since the fee is charged for the volume in cubic meters, we recall the geometric formula for its definition:

W * H * D = volume.

Everything is in meters.

To find out how many boards are in one cube:

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

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

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

1 edged board 32 mm thick, 200 mm wide and 6 m long(32X200X6000) has volume

0.032 * 0.2 * 6 = 0.0384 cubes

30 boards will have 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 \u003d 1.2 cubes
1.2 - 1.152 = 0.048 cubes

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

The cost may vary depending on the type of wood. Grading decreases with a decrease in quality: the presence of wood defects and deviations from standard sizes. If the floorboard has a curvature, narrower or thinner than the standard by 3-5 mm, it will not work completely. Visual inspection of the lumber is just as important as accurate sizing.

Edged board area covered

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

W * D = area.

Having calculated the covered area, it remains to multiply it by the desired thickness of the board

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

It remains 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.The floor and sheathing boards "lining" have an overlapping tongue, which is taken into account in the cubature, but is not included in the area to be covered. A couple of boards are needed have in reserve .

Determining the volume of unedged boards

How many unedged boards are in one cubic meter - Photo

Unedged board, that is, not having a rectangular section along the entire length, is much cheaper and is widely used for the installation of various kinds of rough battens, temporary fences.

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

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

Batch.
Piece by piece.
Sampling method.

In batch In this case, the boards are tightly packed into a bag of the correct shape with further measurement. Further calculation is carried out according to the standard formula for determining the volume. using various coefficients.

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

(Wmax + Wmin) / 2 * (Hmax + Hmin) / 2 * L = volume, m3

where, W- Width, AT- Height, D- Length

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

0,96 for softwood
0,95 for deciduous.

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

The resulting volume is multiplied by five, ten, twenty. Loading continues to the next control board. The selection of control boards in a separate foot is also practiced. The calculation is made after the loading is completed.

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

Calculation of the amount of timber in one cube - Photo

The beam differs from the edged board only in that all its faces 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 beam size	The volume of one bar	Bar 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 = volume of timber, m3.

To find out how much timber is in one cube

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

where, W- Width, T- thickness, D- Length

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

When buying timber, the volume must be determined by the piece, since the timber is laid with spacers in the stack. The measurements of such a stack and the calculation of the cubature according to the above formula invariably lead to a significant overestimation of the volume.

Length of 1 cube of timber (and 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 - a face of 180 mm.

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

1 meter of such a beam will have the following volume.

0.18 * 0.18 * 1 = 0.0324 m3.

These calculations may be needed when determining the cost of funds and material.

Construction log volume: how many logs are in one cube?

How many logs in one cube: calculation - Photo

Log buildings are and will be relevant. The determination of the volume of round material depends on the method of its production.

Construction log of manual debarking.
Construction log, rounded on special machines.

The section of the barrel for trimming by hand has the shape of a slightly truncated cone, so the cylinder volume formula is used, but with some peculiarities.

3.14 * r 2 * L = log volume, m3

Here
r- average 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".

The rounded log has, of course, a cylindrical shape and is calculated according to 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 a bar.

1 / (3.14*r2 * 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 the thickness of the tree bark. In practice, manual calculations are not carried out. They use special tables summarized in a cubature 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 humidity, should be purchased at large sites. A small manufacturer, as a rule, is not allowed there due to the lack of appropriate control over the quality of their products.

Content:

The seller and buyer of timber pursue their own interests. In such a rather delicate matter, one must have certain - simple - knowledge. Today everyone has a tool: a calculator in the phone.

What is a cubic meter of edged board

How many edged boards in one cube - Photo

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

Since the fee is charged for the volume in cubic meters, we recall the geometric formula for its definition:

W * H * D = volume.

Everything is in meters.

To find out how many boards are in one cube:

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

where, W- Width, AT- 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	The 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.

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

1 edged board 32 mm thick, 200 mm wide and 6 m long(32X200X6000) has volume

0.032 * 0.2 * 6 = 0.0384 cubes

30 boards will have 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 \u003d 1.2 cubes
1.2 - 1.152 = 0.048 cubes

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

Edged board area covered

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

W * D = area.

Having calculated the covered area, it remains to multiply it by the desired thickness of the board

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

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

Determining the volume of unedged boards

How many unedged boards are in one cubic meter - Photo

Unedged board, that is, not having a rectangular section along the entire length, is much cheaper and is widely used for the installation of various kinds of rough battens, temporary fences.

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

Batch.
Piece by piece.
Sampling method.

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

(Wmax + Wmin) / 2 * (Hmax + Hmin) / 2 * L = volume, m3

where, W- Width, AT- Height, D- Length

0,96 for softwood
0,95 for deciduous.

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

Calculation of the amount of timber in one cube - Photo

R beam size	The volume of one bar	Bar 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 = volume of timber, m3.

To find out how much timber is in one cube

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

where, W- Width, T- thickness, D- Length

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

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

1 meter of such a beam will have the following volume.

0.18 * 0.18 * 1 = 0.0324 m3.

These calculations may be needed when determining the cost of funds and material.

Construction log volume: how many logs are in one cube?

How many logs in one cube: calculation - Photo

Log buildings are and will be relevant. The determination of the volume of round material depends on the method of its production.

Construction log of manual debarking.
Construction log, rounded on special machines.

The section of the barrel for trimming by hand has the shape of a slightly truncated cone, so the cylinder volume formula is used, but with some peculiarities.

3.14 * r2 * L = log volume, m3

Here
r- average radius, calculated as (r1+r2)/2, r1 is the radius from one end of the log, r2 is the radius from the other end of the log.
L- log length.
3,14 - constant "Pi".

1 / (3.14*r2 * L) = Number of logs in 1m3 (cube)

Blanks for construction logs are measured in the same way.