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Board Foot Formula:
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Board foot is a unit of measurement for lumber volume. One board foot equals 144 cubic inches, typically represented as a piece of wood 1 inch thick, 12 inches wide, and 12 inches long. This calculation is essential in the lumber industry for pricing and inventory management.
The calculator uses the board foot formula:
Where:
Explanation: This formula calculates the approximate board feet of lumber that can be obtained from a log, based on its diameter and length.
Details: Accurate board foot calculation is crucial for lumber pricing, inventory management, and determining the value of timber. It helps both buyers and sellers in the wood industry make informed decisions.
Tips: Enter the log diameter in inches and length in feet. Both values must be positive numbers. The calculator will compute the estimated board feet.
Q1: Why is the divisor 16 in the formula?
A: The divisor 16 accounts for the saw kerf (width of the cut) and other milling losses when converting a log into lumber.
Q2: Is this formula accurate for all types of wood?
A: While the formula provides a good estimate, actual yield can vary based on wood species, log quality, and milling efficiency.
Q3: How should I measure log diameter?
A: Measure the inside bark diameter at the small end of the log for most accurate results.
Q4: Does this calculation account for tapered logs?
A: This formula assumes a consistent diameter. For tapered logs, use the average diameter for a more accurate calculation.
Q5: Can I use this for standing trees?
A: This formula is designed for cut logs. Different methods like the Doyle or Scribner rules are often used for estimating standing timber.