Measurements 1 (3/8/21) Flashcards
What are sections of a tree cut into sections 8 feet or more?
Logs
Sections of a tree cut into sections less than 8 feet.
Sticks or Bolts
A plank that measures 1 inch thick by 12 inches long by 12 inches wide.
Board Foot
Southern Yellow pines average approximately how many cubic feet of solid wood per cord?
75
What’s a 100 cubic feet of solid wood?
Cunit
Defined as a stack of wood 4 foot by 4 foot by 8 foot and contains 128 cubic feet.
Cord
The change in diameter of a standing tree form DBH to the top of the bole.
Taper
The process of measuring a wood product to determine the volume.
Scaling
The least accurate cubic volume formula.
Smellion’s
The most accurate cubic volume formula.
Newton’s
The ratio of the density of the material to the density of water.
Specific Gravity
The cross sectional area in square feet of a single tree stem at DBH.
Basal Area
The amount of wood equivalent to a solid cube that measures 12 in. by 12 in. by 12 in.
Cubic Foot
This results when the log scale of logs going into a sawmill is greater than the lumber yield.
Underrun
When the log scale of logs going into a sawmill is less than the lumber yield.
Overrun
This rule was devised on the premise that sawing 1 in. thick boards with a 1/4 in. kerf from perfectly circular logs based on the diameter of the small end of the log and no taper taken into account, is considered to be intermediate in accuracy.
Scribner
This rule greatly underestimates the volume of lumber that can be obtained from small logs it’s the most common rule in the south.
Doyle
This rule assumes sawing 1 in. thick lumber with a 1/4 in. kerf allowing for 1/2 in. taper per each 4 feet.
International
A table or formula showing estimated volumes usually in board feet for various log diameters and log lengths.
Log Rule
Most mills that use weight scaling use their own _____.
Local Conversion Tables
T or F: Loggers get paid based on weight scale prefer to allow the cut trees to season on the loading deck for a few weeks before hauling them to the mill.
False, the sooner you get it in the better because you will lose water weight.
T or F: Slow growing trees tend to weigh more than fast growing trees of the same size of species.
True, they are more dense
List 2 reasons that mills now use weight scaling instead of stick scaling.
- Faster
2. Cheaper
7.5 cords of pine is how many feet of solid wood.
7.5 * 75 =562.5
Formula for basal area.
0.005454 * D^2
