Board Feet Formula:
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Definition: This calculator estimates the number of board feet that can be obtained from a tree based on its volume and recovery rate.
Purpose: It helps lumber professionals, foresters, and woodworkers determine the usable lumber yield from a tree.
The calculator uses the formula:
Where:
Explanation: The tree volume is multiplied by the recovery rate (accounting for waste) and divided by 12 to convert to board feet.
Details: Accurate board feet estimation helps in timber valuation, sawmill planning, and sustainable forestry management.
Tips: Enter the tree volume in cubic feet and recovery rate (default 0.7). All values must be > 0.
Q1: What is a typical recovery rate?
A: Most trees have a 50-80% recovery rate (0.5-0.8), depending on species, straightness, and sawing method.
Q2: How do I measure tree volume?
A: Volume can be estimated using diameter at breast height (DBH) and merchantable height measurements.
Q3: Why divide by 12 in the formula?
A: This converts cubic feet to board feet (1 board foot = 144 cubic inches = 1/12 cubic foot).
Q4: Does this include bark and defects?
A: No, the recovery rate accounts for these factors - lower rates mean more waste.
Q5: Can I use this for standing trees?
A: Yes, if you have volume estimates from forest mensuration techniques.