The Scribner Log Scale Calculator is a valuable tool utilized in the forestry industry to estimate the volume of logs in board feet (bf). This calculator employs a specific formula tailored for use in the Pacific Northwest, providing an efficient means to assess log volumes accurately. In this comprehensive guide, we’ll delve into the functionality of the Scribner Log Scale Calculator, its formula, practical examples, frequently asked questions, and more.
Formula of Scribner Log Scale Calculator
The formula used in the Scribner Log Scale Calculator is as follows:
bf = 0.79 * D² * L
Where:
- bf represents the estimated volume in board feet.
- D is the inside bark diameter of the log at the small end, measured in inches.
- L stands for the length of the log, measured in feet.
General Terms and Conversions
To facilitate ease of use, let’s include a table of general terms and conversions commonly searched for by users:
| Log Diameter (inches) | Log Length (feet) | Estimated Board Feet (bf) |
|---|---|---|
| 8 | 8 | 195 |
| 10 | 10 | 393 |
| 12 | 12 | 653 |
| 14 | 14 | 975 |
| 16 | 16 | 1362 |
| 18 | 18 | 1814 |
| 20 | 20 | 2331 |
Note: This table is for illustrative purposes only and actual log volume may vary based on individual tree characteristics. It is recommended to consult professional forestry resources for accurate log measurement.
Example of Scribner Log Scale Calculator
Let’s consider an example to illustrate the application of the Scribner Log Scale Calculator:
Suppose we have a log with an inside bark diameter (D) of 20 inches and a length (L) of 10 feet.
Using the formula:
bf = 0.79 * (20)² * 10
After calculation, we find that the estimated volume of the log is 3,160 board feet.
Most Common FAQs
The Scribner Log Calculator provides a reliable estimation of log volume based on the specified parameters. However, it’s important to note that actual log volumes may vary due to factors such as irregularities in shape and taper.
While the calculator utilizes a standard formula, it may not accurately assess logs with irregular shapes. For such cases, manual adjustments or specialized techniques may be necessary to obtain precise volume measurements.
While the calculator’s formula is commonly use in the Pacific Northwest, it may also yield reasonably accurate results in other regions with similar logging practices. However, localized variations and specific requirements should be considered for optimal accuracy.
