FOREST BIOMETRICS CERTIFICATION EVALUATION COMPLETE QUESTIONS AND ANSWERS STUDY SHEET

FOREST BIOMETRICS CERTIFICATION
EVALUATION COMPLETE QUESTIONS AND
ANSWERS STUDY SHEET

●● Volume
Answer: a measure of solid content or capacity, usually expressed in
cubic units. It is the most widely used measure of wood quantity


●● Huber's Formula
Answer: V = 0.7854Dm^2 L


●● Smalian's Formula
Answer: V = 0.7854 [(D^2 + d^2 )/2] L


●● Newton's Formula
Answer: V = 0.7854 [(D^2 + 4Dm^2 + d^2 )/6] L


Where:
D = big-end diameter of the log
Dm = middle-end diameter of the log
d = small-end diameter of the log
L = length of the log

, ●● Government Scaling Formula
Answer: Scaling is the determination of the gross and net volumes of
logs in cubic units. In the Philippines, the net scale of the log is
determined with the exclusion of all natural defects including cavities.
The diameter inside bark is required.


●● For log length ≤ 8meters
Answer: V = 0.7854d^2 L


●● For log length > 8 meters
Answer: V = 0.7854 [(D + d)/2] ^2 x L


●● Log Rules and Scaling
Answer: A log rule is a table or formula that shows the estimated volume
of lumber in board feet that can be derived from logs of given diameters
and lengths under specified utilization standards


●● Scribner Log Rule
Answer: Determines the amount of 1 inch lumber that can be sawn from
the log


●● Bruce and Schumacher Formula
Answer: V= 0.79d^2 - 2d - 4