Lumber

Lumber

Timber after it has been sawed and split into planks or other smaller components that can be used as building material.

Contributors in Lumber

Lumber

Substances such as tannin in wood that are not an integral part of the cellular structure and can be removed in solution by solvents, such hot or cold water, that do not react chemically with wood ...

feature

Building materials; Lumber

Any irregularity or imperfection in a tree, log, board, or other wood product. Feature may result from knots and other growth conditions and abnormalities, insect or fungus attack, or during lumber ...

Forest Stewardship Council

Building materials; Lumber

The Forest Stewardship Council is an international non-profit organization founded in 1993 to support environmentally appropriate, socially beneficial, and economically viable management of the ...

presurfacing

Building materials; Lumber

Surfacing of both broad faces of green rough sawn lumber intended to permit drying by a schedule more severe than the prescribed schedule for rough sawn lumber, achieving faster drying and fewer ...

push-pull racking

Building materials; Lumber

A method for building racks where alternative boards in alternative layers are kept flush with alternate ends. This gives a checkerboard arrangement at the ends of the rack. It is also called topping ...

case hardening

Building materials; Lumber

A drying defect characterized by the presence of compression stresses in the outer zone and tensile stresses in the core. It occurs when rapid drying has caused permanent set of the outer zones of a ...

knot

Building materials; Lumber

That portion of a branch or limb that has been surrounded by subsequent growth of the stem. The shape of the knot as it appears on a cut surface depends on the angle of the cut relative to the long ...