Unit of measurement for wood Flashcards
Memorization
unit of measure used in computing the volume of lumber
Board Foot
volume of a piece of wood 1 inch thick and 1 foot square
One board foot
Formula for board foot
N = P x (T x W)/12 x L
Symbol for number of feet (board measure)
N
Symbol for number of pieces of lumber
P
Symbol for the thickness of lumber (in inches)
T
Symbol for the width of the lumber (in inches)
W
Symbol for length of the pieces (in feet)
L
2 kinds/types of measurement of lumber
Square Foot Measurement
Board Foot Measurement
Measurement of lumber that is equivalent to 1ft.x12in. regardless of the thickness
Square Foot Measurement
Ex. 1ft. x 12in. x 1 in. = 1 sq. ft.
1ft. x 12in. x 2in. = 1 sq. ft.
2ft. x 24in. x 1in. = 2 sq. ft.
Measurement of lumber that is equivalent to 1ft. x 12in. x 1in.
Board Foot Measurement
Ex. 1 board foot = 1ft. x 12in. x 1in.
2 board foot = 1ft. x 12in. x 2in.
3 board foot = 1ft. x 12in. x 3in.
Formula for board foot of round log
Board foot = ((D-4)^2 x L)/16
D = smaller diameter of log
L = length of the log
4 = constant as the reduction factor