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Scribner Log Rule for Standing Trees

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Approximate the board foot volume of a tree using the Scribner log rule.
Board foot value results are for Girard form class 78.

Instead of using "merchantable height" in 16-foot logs this calculator uses the merchantable height of the tree measured from a one-foot stump height to where main stem diameter equals a specified limit.



Scribner Log Rule for Standing Tree Volume

Merchantable Tree Height ft
Tree Diameter @ Breast Height inch

Results:

Board Foot Volume Scribner bf

Calculation

  1. enter the merchantable height of a tree in feet
  2. tree diameter measured at breast height in inches (breast height = 4.5 feet)

Results

  1. Scribner board foot volume of the tree as reported in Girard form class78 table


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