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The Brereton Log Rule formula to calculate board feet is:
\[ \text{BF} = 0.06545 D^2 L \]
The Brereton Log Rule calculates the volume of a log in board feet. It does not take into account any deductions needed for saw kerf, slabs, or edgings. It gives the volume of a log in terms of board feet, calculated at one cubic foot = 12 board feet.
Let's assume the following values:
Using the formula:
\[ \text{BF} = 0.06545 \times 20^2 \times 16 = 418.88 \text{ board feet} \]
| Diameter (inches) | Length (feet) | Board Feet |
|---|---|---|
| 6 | 16 | 37.70 |
| 8 | 16 | 67.02 |
| 10 | 16 | 104.72 |
| 12 | 16 | 150.80 |
| 14 | 16 | 205.25 |
| 16 | 16 | 268.08 |
| 18 | 16 | 339.29 |
| 20 | 16 | 418.88 |
| 22 | 16 | 506.84 |
| 24 | 16 | 603.19 |
| 26 | 16 | 707.91 |
| 28 | 16 | 821.00 |
| 30 | 16 | 942.48 |
| 32 | 16 | 1,072.33 |
| 34 | 16 | 1,210.56 |
| 36 | 16 | 1,357.17 |
