Softwoods - ,.
correct answer conifer tees, less dense, used for framing, warp an
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d twist, lots of knots, cheaper, simple figure (grain pattern)
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Hardwoods - ,.
correct answer deciduous, tight grain, durable, cabinets, different
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categories
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Plainsawn - ,.
correct answer produces maximum yield of useful pieces, most e
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conomical, majority of structural lumber ,. ,. ,. ,.
Quartersawn - ,.
correct answer greater waste, more dimensionally stable, more vi
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sually pleasing, sometimes holds paint better, straight tightly spac
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ed grain pattern
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Moisture content MC - ,. ,. ,.
correct answer amount of water present in wood, standard conten
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t of 19% for framing, standard content of 15% for structural purpo
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ses,
, Knots and knotholes -
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correct answer reduce the strength of a piece of lumber, more diff
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icult to cut ,. ,.
structural grading - ,. ,.
correct answer to rate strength and stiffness properties of a piece
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of lumber ,.
1. spruce-pine-fir
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2. hem-fir,.
3. southern pine
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4. douglas fir-larch -
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correct answer weakest to strongest compressive stress, parallel t
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o grain
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nominal sizes - correct answer timbers take off 1/2"
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veneer - correct answer very thin sheets
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