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Wood weight

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Wood weight

On February 24, 2016, Posted by , In Articles, With No Comments

02In this article we will talk about how to calculate the weight of the timber. After all, it is of great importance when buying lumber, their further transport and storage, design and construction, directly at the building.
When transporting or when calculating the best course of calculating cubic weight, but with regard to timber, section 200 × 200 shows that the lay of the frame it will not be easy without special tools. By the way, if you count the weight of a package, it must also take into account the weight of the gasket between the rows and allowances for processing, this error can be up to 20% of the weight of the package, and may turn into penalties during transport.

The table below shows the mass of 1 boards of various cross sections, 6 meters long. Board material – Scotch pine, natural humidity – 20%.

Weight of 1 pine board (kg), humidity 20%

Size (mm) 1 board volume, 6 m long (м³) Weight 1 м³ 1 board weight, (kg)
25 х 100 0,015 520 7,8
25 х 150 0,0225 11,7
25 х 200 0,03 15,6
40 х 100 0,024 12,48
40 х 150 0,036 18,72
40 х 200 0,048 24,96
50 х 50 0,015 7,8
50 х 100 0,03 15,6
50 х 150 0,045 23,4
50 х 200 0,06 31,2
50 х 250 0,075 39
100 х 100 0,06 31,2
100 х 150 0,09 46,8
100 х 200 0,12 62,4
150 x 150 0,135 70,2
150 х 200 0,18 93,6
150 х 300 0,27 140,4
200 х 200 0,24 124,8

And what if the material is pine or humidity is different from the 20%? The table below shows the values of the mass of 1 cubic meters of basic wood depending on humidity:

Weight of 1 dense cubic meter of timber, kg

Species Humidity, %
10 15 20 25 30 40 50 60 70 80 90 100
Beech 670 680 690 710 720 780 830 890 950 1000 1060 1110
Fir 440 450 460 470 490 520 560 600 640 670 710 750
Larch 660 670 690 700 710 770 820 880 930 990 1040 1100
Aspen 490 500 510 530 540 580 620 660 710 750 790 830
Birch:
— white 630 640 650 670 680 730 790 840 890 940 1000 1050
— ribbed 680 690 700 720 730 790 850 900 960 1020 1070 1130
— dahurian 720 730 740 760 780 840 900 960 1020 1080 1140 1190
— iron 960 980 1000 1020 1040 1120 1200 1280
Oak:
— english 680 700 720 740 760 820 870 930 990 1050 1110 1160
— northeast 690 710 730 750 770 830 880 940 1000 1060 1120 1180
— georgian 770 790 810 830 850 920 980 1050 1120 1180 1250 1310
— araz 790 810 830 850 870 940 1010 1080 1150 1210 1280 1350
Pine:
— cedar 430 440 450 460 480 410 550 580 620 660 700 730
— siberian 430 440 450 460 480 410 550 580 620 660 700 730
-scotch 500 510 520 540 550 590 640 680 720 760 810 850
Fir:
— siberian 370 380 390 400 410 440 470 510 540 570 600 630
— abies 390 400 410 420 430 470 500 530 570 600 630 660
-holophylla 390 400 410 420 430 470 500 530 570 600 630 660
— white 420 430 440 450 460 500 540 570 610 640 680 710
— caucasian 430 440 450 460 480 510 550 580 620 660 700 730
Ash:
-manchurian 640 660 680 690 710 770 820 880 930 990 1040 1100
-european 670 690 710 730 740 800 860 920 980 1030 1090 1150
-ostroplodny 790 810 830 850 870 940 1010 1080 1150 1210 1280 1350

The table shows the average weight value. Possible maximum and minimum values of the masses are, respectively, 1.3 and 0.7 from the average

For a more flexible calculation of lumber weight we give the general formula:

M = V x P

где

М — lumber weight in kg
V — tight timber volume in cubic meters
Р — lumber density in kg/m3

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