Log Scaling

Log Scaling (60 Points per Contestant)

5 Logs will be scaled in 20 minutes. Participants will identify the species, measure the small end diameter, measure the log length to the nearest 2-foot length class (at least 4 inches of trim is necessary), and the Scribner Decimal C board foot volume of the logs. 

The card will be scored as follows:

• Tree Species - 3 points per log for correctly identifying the species.

• Diameter – Not scored, but needed to determine correct Board Ft. Volume.

• Log length – Not scored, but log class is needed to determine correct Board Ft. Volume.

• Volume - 9 points per log for the correct log volume, deduct 3 points for each + or - 1 Scribner Decimal C board foot difference from the correct volume.

• When averaging the diameter of the log, you should always drop the halves.

Divisions on the log scale stick are to the one-half inch, so no rounding is needed. This is only a factor when measuring a log that is oval shaped on the end and an average is used to determine the diameter. An example would be an oval log measures 8 inches across the short diameter, then measuring 90 degrees from the first measurement, the log measures 13 inches across the diameter. 8” + 13” = 21”, 21” divided by 2 = 10.5” inches. Because we do not misrepresent the amount of wood in the log we drop the .5” making the correct diameter of the log 10 inches.

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