Bu basic CH9

Question 1

1. What is probably the most often used and perhaps the most important of all construction materials? (Page 9-3)

Answer 1

wood

Question 2

2. What is the hard, fibrous substance that forms the major part of the trunk and branches of a tree? (Page 9-6)

Answer 2

wood

Question 3

3. What is wood that has been cut and surfaced for use in construction work called? (Page 9-6)

Answer 3

lumber

Question 4

4. Timber is lumber that is how many or more inches in both thickness and width? (Page 9-6)

Answer 4

5

Question 5

5. Lumber is dry enough for most uses when its moisture content has been reduced to about what percent? (Page 9-6)

Answer 5

12-15%

Question 6

6. What two ways are trees classified as? (Page 9-7)

Answer 6

softwood or hardwood

Question 7

7. Structural lumber is how many or more inches in nominal thickness and width and is used where strength is required? (Page 9-7)

Answer 7

2

Question 8

8. The grade of a piece of lumber is based on what three factors? (Page 9-8)

Answer 8

strength, stiffness, and appearance

Question 9

9. What type of lumber is practically free of defects and blemishes? (Page 9-10)

Answer 9

grade a

Question 10

10. What establishes grades for hardwood lumber? (Page 9-10)

Answer 10

national hardwood lumber associates

Question 11

11. How many main categories of engineered wood products are there? (Page 9-12)

Answer 11

five

Question 12

12. What process greatly increases the load carrying capacity and rigidity of the wood? (Page 9-14)

Answer 12

laminating

Question 13

13. What is one of the strongest building materials available to Seabees? (Page 9-15)

Answer 13

plywood

Question 14

14. Interior plywood is used for cabinets and other inside construction where the moisture content of the panels will not exceed what percent? (Page 9-16)

Answer 14

20%

Question 15

15. What is the standard plywood panel size? (Page 9-16)

Answer 15

4’x8’

Question 16

16. What are two wood pieces that are to be joined together called? (Page 9-23)

Answer 16

members

Question 17

17. What type of joints are used mainly in furniture and cabinet work? (Page 9-23)

Answer 17

edge joints

Question 18

18. What is a corrugated strip of metal with one edge sharpened for driving into the joint? (Page 9-28)

Answer 18

corrugated fastener

Question 19

19. What is the strongest of all the woodworking joints? (Page 9-33)

Answer 19

dovetail joint

Question 20

20. What are the most common type of metal fasteners? (Page 9-38)

Answer 20

nails

Question 21

21. What type of nail is used for toenailing and light work in frame construction? (Page 9-38)

Answer 21

box nail

Question 22

22. What is used in finished carpentry work to fasten doors and window casings and other wood trim? (Page 9-38)

Answer 22

casing nail

Question 23

23. The size of a nail is measured in a unit known as a what? (Page 9-38)

Answer 23

penny

Question 24

24. A nail, whatever the type, should be at least how many times as long as the thickness of the wood it is intended to hold? (Page 9-39)

Answer 24

three

Question 25

25. What type of screws are used when ordinary wood screws would be too short or too light and spikes would not be strong enough? (Page 9-42)

Answer 25

lag screws

Question 26

26. Wood screws come in sizes that vary from 1⁄4 inch to how many inches? (Page 9-42)

Answer 26

6 inches

Question 27

27. What are used in construction requiring great strength or when the work under construction must be frequently disassembled? (Page 9-44)

Answer 27

bolts

Question 28

28. Carriage bolts fall into what three categories? (Page 9-44)

Answer 28

square, finned, and ribbed

Question 29

29. What type of bolt is used to fasten small cabinets, towel bars, drapery hangers, mirrors, electrical fixtures, and other lightweight items to hollow walls? (Page 9-47)

Answer 29

molly

Question 30

30. What are the two major categories of adhesives? (Page 9-48)

Answer 30

glues and mastics

Question 31

31. What is used to bond plastic laminates to wood surfaces? (Page 9-48)

Answer 31

contact cement