Approximate the gross board foot volume of a tree using the Scribner Log Rule
The Scribner board foot (fbm) volume is calculated based on the number of 16-foot sawlogs the tree contains in merchantable lumber. The diameter of the tree is measured at breast height (DBH 4½ feet above the ground) The results represent the gross board foot amount as reported in the Scribner Girard form class 78 table.
Tree Height | ||
Height in Feet | Decimal Value | |
1' | 1/16 of a foot = | 0.0625 |
2' | 2/16 of a foot = | 0.125 |
3' | 3/16 of a foot = | 0.1875 |
4' | 4/16 of a foot = | 0.25 |
5' | 5/16 of a foot = | 0.3125 |
6' | 6/16 of a foot = | 0.375 |
7' | 7/16 of a foot = | 0.4375 |
8' | 8/16 of a foot = | 0.5 |
9' | 9/16 of a foot = | 0.5625 |
10' | 10/16 of a foot = | 0.625 |
11' | 11/16 of a foot = | 0.6875 |
12' | 12/16 of a foot = | 0.75 |
13' | 13/16 of a foot = | 0.8125 |
14' | 14/16 of a foot = | 0.875 |
15' | 15/16 of a foot = | 0.9375 |
16' | 16/16 of a foot = | 1 |
32' | 2 | |
48' | 3 | |
64' | 4 | |
80' | 5 | |
96' | 6 | |
112' | 7 | |
128' | 8 |