Every woodworker knows the value of lumber calculation skills. During its acquisition, it is always necessary to study in detail what is written, since many sellers use computer programs for the calculation, and they often provide incorrect information, which then results in overlays, including financial ones.
Table of calculation of the cubic capacity of logs.
To calculate the amount of lumber in a cube, you need to note in advance that the stereometric figure here takes place only as a mathematical value, but not in physical plan. That is, the measured wood can be in the form of 5 bars with a cross section of 200 * 200 mm and a length of 5 m, and its volume will be 1 cu.
A whole complex of materials usually gets into cubes: edged and unedged board, bar, bar and rake. Some manufacturers may offer additional options, but this is quite rare.
Among all materials, calculations of unedged boards stand out, since it does not have 3 standard indicators (length, width, height), but 4 (length, width from below, width from above, height), because of which the width indicator used in averaged form. The height is also not always indicated, so it is often necessary to further clarify.
Almost always the amount of sawn timber in a cube looks like this:
Material name | Dimensions 1 copy. (VSD) mm | Volume 1 sp. m³ | Area 1 pc. m² | How much is 1 m³, ind. | How much goes to 10 m³, ind. |
Edged board | 15 * 150 * 6000 | 0.0135 | 0.9 | 74.074 | 740.741 |
Edged board | 25 * 180 * 5000 | 0.0225 | 0.9 | 44.444 | 444.444 |
Unedged board | 20 * 130 * 4500 | 0,0108 | 0.585 | 92.593 | 925.926 |
Unedged board | 25 * 150 * 6000 | 0.0225 | 0.9 | 44.444 | 444.444 |
Lumber | 200 * 200 * 5000 | 0.2 | 1 | 5 | 50 |
Lumber | 100 * 100 * 7000 | 0.07 | 0.7 | 14.286 | 142.857 |
Bar | 25 * 40 * 3000 | 0.003 | 0.12 | 333.333 | 3333.333 |
Bar | 40 * 40 * 4000 | 0.0064 | 0.16 | 156.25 | 1562 5 |
Rake | 20 * 50 * 3000 | 0.003 | 0.15 | 333.333 | 3333.333 |
Rake | 23 * 50 * 2000 | 0.0023 | 0.1 | 434.783 | 4347.826 |
Table for the calculation of edged boards.
Despite the fact that initially all data in cubic meters are specified in millimeters, they need to be converted to meters and only then begin to calculate the number. Each of these points has its own meaning:
All sawn timber is considered fairly easily by school mathematical formulas (V = abc and S = ab).
The most important thing is not to hurry, thanks to which after some time it will not be necessary to make serious calculations on the calculator for calculations, and you will be able to calculate everything in your head.
Didn't find the answer in the article? More information on the topic:
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