Bu basic CH8

Question 1

1. 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)

Answer 1

trowel

Question 2

2. What is used to smooth cut masonry units into parts? (Page 8-4)

Answer 2

chisel

Question 3

3. What is used to measure right angles and to lay out corners? (Page 8-5)

Answer 3

square

Question 4

4. The straightedge can be any length up to how many feet? (Page 8-6)

Answer 4

16

Question 5

5. How many main types of concrete masonry units are there? (Page 8-9)

Answer 5

5

Question 6

6. Load-bearing blocks are available in what two grades? (Page 8-9)

Answer 6

N and S

Question 7

7. 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)

Answer 7

25%

Question 8

8. What is the mortar property of resistance to rapid loss of water to highly absorbent masonry units? (Page 8-10)

Answer 8

water retentivity

Question 9

9. 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)

Answer 9

type M

Question 10

10. What type of mortar is recommended where high resistance to lateral forces is required? (Page 8-10)

Answer 10

type S

Question 11

11. 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)

Answer 11

Type N

Question 12

12. 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)

Answer 12

100

Question 13

13. 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)

Answer 13

rule 38

Question 14

14. Cement or lime should not be stacked more than how many bags high on a pallet? (Page 8-17)

Answer 14

10

Question 15

15. What is the process of inserting mortar into horizontal and vertical joints after the unit has been laid? (Page 8-24)

Answer 15

pointing

Question 16

16. What are continuous vertical joints that permit a masonry wall to move slightly under unusual stress without cracking? (Page 8-25)

Answer 16

control joints

Question 17

17. What are reinforced courses of block that bond and integrate a concrete masonry wall into a stronger unit? (Page 8-27)

Answer 17

bond beams

Question 18

18. Lintels should have a minimum bearing of how many inches at each end? (Page 8-27)

Answer 18

6

Question 19

19. What can be used to hold back a mass of soil or other material? (Page 8-32)

Answer 19

retaining walls

Question 20

20. 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)

Answer 20

brick masonry

Question 21

21. 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)

Answer 21

glazed

Question 22

22. Bricks can have an ultimate compressive strength as low as what? (Page 8-35)

Answer 22

1600 psi

Question 23

23. Except where stacked in sheds, brick piles should never be more than how many feet high? (Page 8-35)

Answer 23

7

Question 24

24. 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)

Answer 24

4

Question 25

25. 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)

Answer 25

stretcher

Question 26

26. What is a brick laid on its end with its face perpendicular to the face of the wall? (Page 8-39)

Answer 26

soldier

Question 27

27. What refers to how the individual masonry units interlock or tie together into a single structural unit? (Page 8-39)

Answer 27

structural bond

Question 28

28. What should be installed at any spot where moisture is likely to enter a brick masonry structure? (Page 8-42)

Answer 28

flashing