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| I-joists |
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Wooden members made of two pieces of LVL held together with a web of OSB. Substituted for wide dimensional lumber as a support for a ceiling or floor.
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| Implosion |
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The sudden collapse of dry kiln wall panels due to unequal air pressure between the inside of the kiln. This usually occurs on startup as hot, expanded air suddenly cools and contracts as it passes through green lumber. The vents must open on startup to prevent this.
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| Inch (in) |
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A unit of length equal to one-twelfth of a foot (2.54 cm).
View: Metric / Imperial Conversion
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| Infeed |
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The direction a workpiece is fed into a blade or cutter.
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| Infeed Rolls |
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Rolls placed ahead of certain types of saws or chip heads to force the material through the machine.
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| Inserted point (inserted tooth) |
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The tooth used in an inserted-tooth saw.
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| Insulating board |
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A generic term for a homogeneous panel made from lignocellulosic fibers (usually wood or cane) characterized by an integral bond produced by interfelting of the fibers, to which other materials may have been added during manufacture to improve certain properties, but which has not been consolidated under heat and pressure as a separate stage in manufacture, said board having a density of less than 31 pcf (specific gravity 0.50) but having a density of more than 10 pcf (specific gravity 0.16).
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| International 1/4-Inch Log Rule |
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This rule was developed in 1906 and is based on a reasonably accurate mathematical formula. The rule allows for a 1/4-inch saw kerf and a fixed taper allowance of 1/2 inch per 4 feet of log length. Deductions are also allowed for shrinkage of boards and a slab thickness that varies with the log diameter. Overall, the International 1/4-Inch Log Rule is the most consistent and is often used as a basis of comparison for log rules.
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| Isotropic |
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Exhibiting the same properties in all directions.
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