# Standing Tree Board Foot Volume Based on the International 1/4 Log Rule

The International 1/4 volume of a tree in board feet is calculated based on the number of 16-foot sawlogs, or portions there off, the tree contains in merchantable lumber. The diameter of the tree is measured at breast height(DBH 4½ feet above the ground).

##### Examples:

tree height = 33 feet to a top diameter of 8 inches33 ÷ 16 = 2 full 16 foot sections. Trim allowance would make up the rest.

Enter a 2 in the number of 16 foot sawlogs field of the calculator.

tree height of 16.5 feet

include a trim allowance and you would end up with a 16-foot sawlog.

Enter 1 in the number of 16 foot sawlogs field of the calculator.

tree height of 12.5 feet

include a trim allowance and you would end up with one 12 foot section. Enter 0.75 in the number of 16 foot sawlogs field of the calculator.

##### Wiant's International 1/4 Formula:

V = (1.52968L² + 9.58615L - 13.35212)+ (1.79620 - 0.27465L² - 2.59995L)d + (0.04482 - 0.00961L² + 0.45997²)d² where V = volume in mbf d = diameter measured at breast height in inches L = number of 16 foot saw logs

### International 1/4 Log Rule

#### Calculation

- the number of 16 foot sawlogs in the tree stem or part thereof (see table)
- diameter of a tree measured at breast height

#### Result

- board foot volume of the tree based on the Scribner log scale table for standing tree volumes.

##### Logging Calculators

#### Log Rule Calculators

- Doyle Log Rule for Standing Trees
- Doyle Log Rule for Standing Trees using Metric Measurements
- International ¼ Inch Log Rule for Standing Trees
- International ¼ Inch Log Rule for Standing Trees - Metric
- Scribner Log Rule for Standing Trees
- Scribner Log Rule for Standing Trees - Metric
- Standing Tree Cubic Volume Calculator
- Standing Tree Board Foot Volume Based on the Doyle Log Rule
- Standing Tree Board Foot Volume Based on the International 1/4 Log Rule