Bu basic CH8 Flashcards
1
Q
- What are used to pick up mortar from the board, throw it on the unit, spread the mortar, and tap the unit down into the bed? (Page 8-4)
A
trowel
2
Q
- What is used to smooth cut masonry units into parts? (Page 8-4)
A
chisel
3
Q
- What is used to measure right angles and to lay out corners? (Page 8-5)
A
square
4
Q
- The straightedge can be any length up to how many feet? (Page 8-6)
A
16
5
Q
- How many main types of concrete masonry units are there? (Page 8-9)
A
5
6
Q
- Load-bearing blocks are available in what two grades? (Page 8-9)
A
N and S
7
Q
- American Society for Testing Materials (ASTM) specifications define a solid concrete block as having a core area not more than what percent of the gross cross sectional area? (Page 8-9)
A
25%
8
Q
- What is the mortar property of resistance to rapid loss of water to highly absorbent masonry units? (Page 8-10)
A
water retentivity
9
Q
- What type of mortar is suitable for general use but is recommended specifically for below grade masonry that contacts earth, such as foundations, retaining walls, and walks? (Page 8-10)
A
type M
10
Q
- What type of mortar is recommended where high resistance to lateral forces is required? (Page 8-10)
A
type S
11
Q
- What type of mortar is suitable for general use in above grade exposed masonry that does not require high compressive or lateral strength? (Page 8-10)
A
Type N
12
Q
- Type O mortar is recommended for load-bearing, solid unit walls when the compressive stresses do not exceed how many pounds per square inch? (Page 8-10)
A
100
13
Q
- What rule can you use for calculating the raw material needed to mix 1 yard of mortar without a great deal of paperwork? (Page 8-17)
A
rule 38
14
Q
- Cement or lime should not be stacked more than how many bags high on a pallet? (Page 8-17)
A
10
15
Q
- What is the process of inserting mortar into horizontal and vertical joints after the unit has been laid? (Page 8-24)
A
pointing
16
Q
- What are continuous vertical joints that permit a masonry wall to move slightly under unusual stress without cracking? (Page 8-25)
A
control joints
17
Q
- What are reinforced courses of block that bond and integrate a concrete masonry wall into a stronger unit? (Page 8-27)
A
bond beams
18
Q
- Lintels should have a minimum bearing of how many inches at each end? (Page 8-27)
A
6
19
Q
- What can be used to hold back a mass of soil or other material? (Page 8-32)
A
retaining walls
20
Q
- What is construction in which uniform units called bricks, small enough to be placed with one hand, are laid in courses with mortar joints to form walls? (Page 8-32)
A
brick masonry
21
Q
- What type of bricks are particularly suited to walls or partitions in hospitals, dairies, laboratories, and other structures requiring sanitary conditions and ease of cleaning? (Page 8-34)
A
glazed
22
Q
- Bricks can have an ultimate compressive strength as low as what? (Page 8-35)
A
1600 psi
23
Q
- Except where stacked in sheds, brick piles should never be more than how many feet high? (Page 8-35)
A
7
24
Q
- When a pile of brick reaches a height of how many feet it must be tapered back 1 inch in every foot of additional height? (Page 8-35)
A
4
25
Q
- What is a masonry unit laid flat on its bed along the length of a wall with its face parallel to the face of the wall? (Page 8-36)
A
stretcher
26
Q
- What is a brick laid on its end with its face perpendicular to the face of the wall? (Page 8-39)
A
soldier
27
Q
- What refers to how the individual masonry units interlock or tie together into a single structural unit? (Page 8-39)
A
structural bond
28
Q
- What should be installed at any spot where moisture is likely to enter a brick masonry structure? (Page 8-42)
A
flashing
