Sustainable Bio. (Lumber) Flashcards
Lumber is dried to a specific moisture content
Kiln
Softwood lumber production is almost evenly split between what two regions in the U.S.?
South and West
Often defined for trade as a product sawn from a log.
Lumber
Softwood lumber less than 2 inches thick
Board
Softwood material 2-4 inches thick
Dimension
Softwood pieces 5 inches or thicker
Timber
Single most important hardwood species
Red Oak
Used principally as a building construction material
Softwood Lumber
Approximately 3/4 of the softwood soft timber harvested in the U.S. is what two species?
Douglas Fir and Southern Yellow Pine
Measuring the volume of logs
Scaling
Hardwood lumber grades were developed with the assumption that lumber would be cut into smaller usable pieces called
Cuttings
A log rule defines a conversion that relates the _____ of a log to an estimate of lumber yield.
Diameter and Length
Log rule that provides the closest estimate to actual lumber production
International 1/4-in. Rule
The log rule that greatly underestimates the volume of lumber that can be obtained from small logs
Doyle Rule
The main reason for debarking logs prior to sawing so that the bark-free slabs can be chipped and sold for use in making pulp. Bark is usually used for ____
A fuel source