1. What is a Board Feet Calculator For Logs?

Definition: This calculator estimates the volume of lumber in board feet that can be obtained from a log using the Scribner rule formula.

Purpose: It helps loggers, sawmill operators, and woodworkers estimate lumber yield from logs for planning and pricing purposes.

2. How Does the Calculator Work?

The calculator uses the Scribner rule formula:

Where:

• \( D \) — Diameter of the log (inches, inside bark at small end)
• \( L \) — Length of the log (feet)

Explanation: The formula accounts for the log's taper and estimates the number of 1-inch-thick boards that can be sawn from the log.

3. Importance of Board Feet Calculation

Details: Accurate board foot calculations are essential for inventory management, pricing logs, and production planning in the lumber industry.

4. Using the Calculator

Tips: Measure the diameter at the small end of the log (inside bark) and the log length in feet. Enter both values (must be > 0).

5. Frequently Asked Questions (FAQ)

Q1: What is the Scribner rule?
A: It's a logarithmic formula developed in the 1800s to estimate lumber yield from logs, accounting for sawing patterns and log taper.

Q2: How accurate is the Scribner rule?
A: It provides a conservative estimate, typically 10-15% less than actual mill yield, making it good for log scaling.

Q3: When should I use this calculator?
A: Use it for rough estimates of log value or potential lumber yield before milling.

Q4: What's the minimum diameter this formula works for?
A: The formula works best for logs ≥ 8 inches diameter. For smaller logs, other scaling methods may be more appropriate.

Q5: Does this account for defects?
A: No, the basic formula doesn't account for defects. Deductions should be made for rot, knots, or other defects.