Basic Volume Tables
The basic tables used to calculate volumes are the "composite volume tables." Use of a single table for many species is based on the fact hat where the same standards of utilization are employed, differences in volume for most species are of no practical consequence, Errors in determining usable height and DBH outweigh the slight volume variations between species. International ¼-inch, Scribner Decimal C, Doyle and Cord wood Composite Volume tables have been developed through research to meet most of the needs of forestry. The International ¼-Inch Rule is illustrated in the Table below.
Composite Table: Gross Volume1 in Board Feet
(International ¼-Inch Rule) by Number of 16-Foot Logs
|
Diameter breast high (inches) |
Volume when number of 16-foot logs is |
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|
½ |
1 |
1 ½ |
2 |
2 ½ |
3 |
3 ½ |
4 |
5 |
|
|
Bd. Feet |
Bd. Feet |
Bd. Feet |
Bd. Feet |
Bd. Feet |
Bd. Feet |
Bd. Feet |
Bd. Feet |
Bd. Feet
326__ 378 440 500 570 635 715 800 870 950 1020 1100 1190 1280 1360 1450 1550 1650 1760 1880 2000 2120 2240 2360 2480 |
|
|
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 |
15___ 18 21 25 30 36 42 50 59 66 74 83 92 102 112 122 133 145 158 172 187 203 220 237 254 270 291 311 333 353 374 394 415 |
24 32___ 39 48 57 68 79 92 105 118 135 152 170 189 209 228 252 275 300 325 348 378 410 440 470 500 530 565 600 635 670 705 745 |
35 44 54__ 68 80 96 110 128 147 166 188 212 236 262 290 316 346 376 410 440 480 515 550 595 635 680 725 770 820 860 910 960 1010 |
46 54 68 82___ 100 118 140 160 180 208 235 265 295 328 362 396 430 470 510 550 595 640 685 740 790 840 900 950 1010 1070 1120 1180 1250 |
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|
63 76 91 114___ 134 163 188 213 245 278 314 350 390 430 470 510 555 605 650 700 760 810 870 930 990 1060 1120 1190 1260 1330 1400 1480 |
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|
81 98 124 149__ 184 214 247 281 320 360 400 450 495 540 595 645 700 760 810 870 930 1000 1070 1140 1210 1290 1370 1450 1530 1620 1700 |
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|
130 161 194__ 232 274 314 360 405 450 505 555 610 670 730 790 850 920 990 1060 1140 1210 1290 1380 1460 1550 1640 1730 1830 1930 |
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|
171 205 250__ 295 340 400 450 500 550 610 680 740 810 880 950 1020 1100 1180 1260 1350 1440 1530 1630 1725 1830 1930 2040 2160 |
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The boxed-in figures in the upper portion of the table show volume to a top diameter of 6.0 or more, but less than 8.0 inches, and hence are applicable only to softwoods.
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