Timber Cruising

Timber Cruising (60 Points per Contestant)

Two classes of 2 trees will be cruised in 20 minutes per class. Participants will measure the DBH, measure the total tree height, and look up the board foot volume for each tree. DBH is given in 2-inch increments in the volume table. The standard practice for rounding diameters is as follows: A tree in the 12-inch diameter class will be between 11.1 inches and 13.0 inches in diameter. A 14-inch diameter class tree will be between 13.1 inches and 15.0 inches in diameter. Tree height shall be measured from the base of the tree, on the most uphill side of the tree, to the highest point of the tree, standard rounding practices will be used to determine total tree height. For example, with a tree measuring from 65 to 74 feet tall, you would use the 70-foot tree height line. For a tree measuring between 85 to 94 feet tall, use 90 feet. In addition, the participants will total the volumes of all 4 trees. For the state CDE, Timber Cruising will be bubbled in to the Timber Cruising section of the scansheet. DBH 1-4 and HT 1-4 will be used. Total volume will be bubbled in the volume section.

The card will be scored as follows:

• Diameter - 5 points per tree for the correct diameter, no partial credit will be given.

• Height - 5 points per tree for the correct height, no partial credit will be given.

• Total Volume – 20 points for the correct total volume, deduct 5 points for each + or -5% of difference from the correct volume.

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