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  • Construction Materials, Methods, And Techniques: C
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Construction Materials, Methods, and Techniques: Chapter 18 - 20 Review Questions

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Construction Materials, Methods, and Techniques: Chapter 18 - 20 Review Questions How can you tell a coniferous tree from a deciduous tree? Coniferous trees have ___[1]__ and _____. Deciduous trees have __[2]___. - bark, branches - cones and needles, leaves - fruits, flowers ️️cones and needles, leaves What natural defects are found in wood? _____, _____, _____, _____, _____, _____ and _____. - knots, shake, wane, insect hole, warp, checks, stain and honeycombing - webs, borrows, honey, cracks, ropes and warps - breaks, rattles, nests, wetness and burns ️️knots, shake, wane, insect hole, warp, checks, stain and honeycombing What are two common ways wood is seasoned? __[1]___ and __[2]___ - air drying - blow drying - aging - kiln drying ️️air drying, kiln drying What is the recommended moisture content for wood used for framing? _____. - 5% - 10% - 10% - 15% - 15% - 19% - 19% - 25% ️️15% - 19% Why is surfaced green softwood lumber produced more than softwood lumber that is surfaced when dry? When softwood lumber dries, _____. - it cracks - it warps - It shrinks - it expands ️️It shrinks What standard is followed in the production of softwood lumber? PS 20-20 in the US & CSA 0141 in Canada (T/F) ️️True How many board feet are in a 2 in. x 10 in. x 12 ft piece of stock? _____ 6 board feet 12 board feet 20 board feet 24 board feet ️️20 board feet What is the volume of 250 pieces 38mm x 140mm x 3.66m? _____ m3 .0487m3 0487m3 4.87m3 48.7m3 ️️4.87m3 How does a contractor know lumber received on a job has been dried to a 15% moisture content? It will have the grade stamp ____ on it.

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Construction Materials, Methods, and Techniques: Chapter
18 - 20 Review Questions
How can you tell a coniferous tree from a deciduous tree? Coniferous trees have ___[1]__ and _____.
Deciduous trees have __[2]___.



- bark, branches

- cones and needles, leaves

- fruits, flowers ✔️✔️cones and needles, leaves



What natural defects are found in wood? _____, _____, _____, _____, _____, _____ and _____.



- knots, shake, wane, insect hole, warp, checks, stain and honeycombing

- webs, borrows, honey, cracks, ropes and warps

- breaks, rattles, nests, wetness and burns ✔️✔️knots, shake, wane, insect hole, warp, checks, stain
and honeycombing



What are two common ways wood is seasoned? __[1]___ and __[2]___



- air drying

- blow drying

- aging

- kiln drying ✔️✔️air drying, kiln drying



What is the recommended moisture content for wood used for framing? _____.



- 5% - 10%

- 10% - 15%

- 15% - 19%

- 19% - 25% ✔️✔️15% - 19%

, Why is surfaced green softwood lumber produced more than softwood lumber that is surfaced when
dry? When softwood lumber dries, _____.



- it cracks

- it warps

- It shrinks

- it expands ✔️✔️It shrinks



What standard is followed in the production of softwood lumber? PS 20-20 in the US & CSA 0141 in
Canada (T/F) ✔️✔️True



How many board feet are in a 2 in. x 10 in. x 12 ft piece of stock? _____



6 board feet

12 board feet

20 board feet

24 board feet ✔️✔️20 board feet



What is the volume of 250 pieces 38mm x 140mm x 3.66m? _____ m3



.0487m3

0487m3

4.87m3

48.7m3 ✔️✔️4.87m3



How does a contractor know lumber received on a job has been dried to a 15% moisture content? It will
have the grade stamp ____ on it.



MC-15

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