24 Terms
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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
Cripple
Building materials; Lumber
A cut in an unseasoned joist, bearer or stud designed to reduce movement in a floor or wall as the structural lumber seasons.
Hardness
Building materials; Lumber
A property of wood that enables it to resist indentation. It is measure in kN and is often determined by the Janka hardness test.
Diffusion
Building materials; Lumber
Movement of water through wood from points of high moisture content to points of low moisture content by molecular diffusion.
Cladding
Building materials; Lumber
The external covering or skin of walls of a building. Lumber cladding includes natural or treated lumber boards, and plywood.
Dew point
Building materials; Lumber
The temperature at which the relative humidity of a body of air is 100 per cent. Further cooling causes vapour in the air to condense as water droplets.
Particle board
Building materials; Lumber
A pressed sheet material made from particles of lumber or other ligno-cellulosic material bonded with synthetic resin and/or other organic binder
Compression seat
Building materials; Lumber
A fabricated or cast metal bracket into which lumber structural members abut, used to joint lumber compression elements to other structural members.
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