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15 Cards in this Set
- Front
- Back
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How long does it take for old-growth trees to mature?
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More than 200 years
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Is the most desirable wood from old-growth or second- and third-growth trees? Why?
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Old-growth wood is the highest quality. Younger trees are smaller and produce fewer large-sized pieces, and lumber from these trees sometimes has undesirable characteristics such as a tendency to warp.
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What percentage of a log is converted to lumber with traditional processes?
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40%
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What percentage of a log is converted to structural lumber with engineered lumber processes?
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75%
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Which process consumes more energy: the manufacture of engineered lumber or of solid lumber?
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solid lumber
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Which process makes use of more species of trees: engineered lumber or solid lumber?
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engineered lumber
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Which is stronger: engineered lumber or solid lumber?
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engineered lumber
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Which can span greater distances: engineered lumber or solid lumber?
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engineered lumber
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What does LVL stand for?
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laminated veneer lumber
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What was LVL first manufactured for?
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airplane propellers during WWII
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What was the trade name for the first patented LVL in building construction?
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MICRO-LAM
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How is LVL manufactured?
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Layers of wood veneer are glued together with the grain running in parallel directions (unlike plywood).
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What is this?
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LVL (laminated veneer lumber)
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What is this?
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LVL (laminated veneer lumber)
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What is this?
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LVL (laminated veneer lumber)
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