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Log Board Feet Formula:
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The log board feet calculation estimates the volume of lumber that can be obtained from a log. It's a standard measurement used in the forestry and lumber industry to quantify wood volume.
The calculator uses the board feet formula:
Where:
Explanation: The formula calculates the approximate volume of lumber in board feet, where one board foot equals 144 cubic inches (12" × 12" × 1").
Details: Accurate board feet calculation is essential for timber valuation, lumber pricing, inventory management, and sustainable forest management practices.
Tips: Enter the diameter inside bark in inches and the length in feet. Both values must be positive numbers. The diameter should be measured at the small end of the log for most accurate results.
Q1: Why use 0.785 in the formula?
A: The constant 0.785 is π/4, which converts the diameter to radius squared for the circular cross-sectional area calculation.
Q2: How accurate is this calculation?
A: This formula provides a good estimate but actual lumber yield may vary based on log taper, defects, and sawing method.
Q3: Should I measure diameter at the large or small end?
A: For most accurate results, measure the diameter inside bark at the small end of the log, as this is standard practice in the industry.
Q4: Does this account for bark thickness?
A: No, the formula uses diameter inside bark, so you should measure after removing bark or estimate the inside diameter.
Q5: Can this be used for all tree species?
A: Yes, the formula is general but different species may have different conversion factors based on wood density and market practices.