Lumber

Lumber

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

Industry: Building materials

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Lumber

durability class

Building materials; Lumber

Durability is expressed as one of four classes. The value for each species is based on trials of the resistance to both decay and termites of untreated heartwood in the ground. The classes are: : ...

drying

Building materials; Lumber

The process of removing moisture from lumber to improve its serviceability in use. : Defect - An imperfection developing during drying that decreases the value of a piece of lumber. : Degrade - A ...

water repellent

Building materials; Lumber

A liquid that penetrates wood which, after drying, materially retards changes in moisture content and in dimensions without adversely altering the desirable properties of wood.

folded plate

Building materials; Lumber

The configuration of flat sheets, such as plywood, into a folded form to produce a beam of considerably higher strength and stiffness than is possible with the flat sheet alone.

horizontally laminated lumber

Building materials; Lumber

Laminated lumber designed to resist bending loads applied perpendicular to the wide face of the laminations. For vertical loads, this means that the wide face runs horizontally.

corbel

Building materials; Lumber

A length of lumber laid horizontally on the top of a column to transfer loads and to provide a seat for beams. A compound corbel includes several lengths of lumber instead of one.

radially sawn

Building materials; Lumber

Lumber sawn on the radius from the central axis of the tree or log to the circumference, perpendicular to the growth rings. The resulting pieces are generally triangular in shape.