8 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
Psychrometric charts
Building materials; Lumber
A psychrometric chart or psychrometric table relates dry bulb temperature, wet bulb depression and humidity.
Lateral movement
Building materials; Lumber
Movement in a structure that is perpendicular to the major axis of loading, ie. usually horizontal movement
Cambium
Building materials; Lumber
A thin layer of tissue between the bark and wood that repeatedly subdivides to form new wood and bark cells.
Seasoning
Building materials; Lumber
Drying lumber to a moisture content appropriate to the conditions and purposes for which it is to be used.
Warp
Building materials; Lumber
Any variation from a true and plane surface. It includes bow, cup and twist and is often caused by irregular seasoning.
Green volume
Building materials; Lumber
The volume of wood determined from measurements made while the entire piece of wood is above the fibre saturation point, about 30% moisture content.
Fire resistance level (FRL)
Building materials; Lumber
Grading periods in minutes of the fire resistance of building elements for structural adequacy/integrity/and insulation
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