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

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.

Stiffener

Building materials; Lumber

All elements used to support or stiffen the slender webs of box and I-shaped beams and to enhance compressive capability of webs at support points or points of high transverse loads.

Chord

Building materials; Lumber

Either of the two outside members of a truss (a) connected and braced by the web (b) members. The term also applies to beam flanges or the perimeter members of a plywood diaphragm.

Collapse

Building materials; Lumber

The flattening of single cells or rows of cells during the drying or pressure treatment of wood. Often characterised by a caved-in or corrugated ("washboarded") appearance of the wood surface.

Purlin

Building materials; Lumber

One of a series of horizontal framing lumbers supporting the rafters or spanning between trusses or frames and supporting the roof. Purlins usually span at right angles to the slope of the roof

Montreal process criteria and indicators

Building materials; Lumber

Developed by the Montreal Process Working Group, these criteria are the broad forest values that managers seek to maintain, while indicators, over time, provide measures of change in these criteria.

Fibre saturation point

Building materials; Lumber

The point in the seasoning or wetting of lumber at which the cell cavities are free from water but cell walls are still saturated with bound water. It is taken as approximately 25-30% moisture ...