Calculation method
The calculator uses the mid-area formula: V = pi * d^2 / 4 * l, where d is the under-bark diameter in metres and l is the log length in metres.
Bark deduction by species
The table reflects the same rules as the previous article-embedded calculator.
| Wood species | up to 14 cm | 15 to 24 cm | 25 to 34 cm | 35 to 49 cm | 50 cm and more |
|---|---|---|---|---|---|
| Pine, Douglas fir | 1 cm | 1 cm | 2 cm | 3 cm | 3 cm |
| Larch | 1 cm | 2 cm | 3 cm | 4 cm | 5 cm |
| Spruce, fir, other coniferous | 1 cm | 1 cm | 2 cm | 2 cm | 3 cm |
| Oak, black locust, alder | 2 cm | 2 cm | 3 cm | 4 cm | 5 cm |
| Birch | 1 cm | 2 cm | 2 cm | 3 cm | 4 cm |
| Beech, hornbeam, maple | 1 cm | 1 cm | 1 cm | 1 cm | 1 cm |
| Other deciduous | 2 cm | 2 cm | 3 cm | 3 cm | 4 cm |