Calculation of Timber Volume in Round Logs
The following calculation can be used to estimate the usable timber in round logs
Hoppus Volume (hft) = (Mid Quarter Girth in ins.)^2 X Length (ft) / 144
One hoppus foot = 1.273 true ft3; 27.74 h ft = 1 m3; and 1 h ft = 0.03605m3. A hoppus foot is approximately 21% oversize compared with a true cubic foot.
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