Bu basic CH9 Flashcards
1
Q
- What is probably the most often used and perhaps the most important of all construction materials? (Page 9-3)
A
wood
2
Q
- What is the hard, fibrous substance that forms the major part of the trunk and branches of a tree? (Page 9-6)
A
wood
3
Q
- What is wood that has been cut and surfaced for use in construction work called? (Page 9-6)
A
lumber
4
Q
- Timber is lumber that is how many or more inches in both thickness and width? (Page 9-6)
A
5
5
Q
- Lumber is dry enough for most uses when its moisture content has been reduced to about what percent? (Page 9-6)
A
12-15%
6
Q
- What two ways are trees classified as? (Page 9-7)
A
softwood or hardwood
7
Q
- Structural lumber is how many or more inches in nominal thickness and width and is used where strength is required? (Page 9-7)
A
2
8
Q
- The grade of a piece of lumber is based on what three factors? (Page 9-8)
A
strength, stiffness, and appearance
9
Q
- What type of lumber is practically free of defects and blemishes? (Page 9-10)
A
grade a
10
Q
- What establishes grades for hardwood lumber? (Page 9-10)
A
national hardwood lumber associates
11
Q
- How many main categories of engineered wood products are there? (Page 9-12)
A
five
12
Q
- What process greatly increases the load carrying capacity and rigidity of the wood? (Page 9-14)
A
laminating
13
Q
- What is one of the strongest building materials available to Seabees? (Page 9-15)
A
plywood
14
Q
- 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)
A
20%
15
Q
- What is the standard plywood panel size? (Page 9-16)
A
4’x8’
16
Q
- What are two wood pieces that are to be joined together called? (Page 9-23)
A
members
17
Q
- What type of joints are used mainly in furniture and cabinet work? (Page 9-23)
A
edge joints
18
Q
- What is a corrugated strip of metal with one edge sharpened for driving into the joint? (Page 9-28)
A
corrugated fastener
19
Q
- What is the strongest of all the woodworking joints? (Page 9-33)
A
dovetail joint
20
Q
- What are the most common type of metal fasteners? (Page 9-38)
A
nails
21
Q
- What type of nail is used for toenailing and light work in frame construction? (Page 9-38)
A
box nail
22
Q
- What is used in finished carpentry work to fasten doors and window casings and other wood trim? (Page 9-38)
A
casing nail
23
Q
- The size of a nail is measured in a unit known as a what? (Page 9-38)
A
penny
24
Q
- 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)
A
three
25
Q
- 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)
A
lag screws
26
Q
- Wood screws come in sizes that vary from 1⁄4 inch to how many inches? (Page 9-42)
A
6 inches
27
Q
- What are used in construction requiring great strength or when the work under construction must be frequently disassembled? (Page 9-44)
A
bolts
28
Q
- Carriage bolts fall into what three categories? (Page 9-44)
A
square, finned, and ribbed
29
Q
- 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)
A
molly
30
Q
- What are the two major categories of adhesives? (Page 9-48)
A
glues and mastics
31
Q
- What is used to bond plastic laminates to wood surfaces? (Page 9-48)
A
contact cement
