Question

5. Why are cycle times typically larger for a hoe excavator than a front shovel?

6. What are some advantages of crawler bulldozers (give at least 2)?

7. What are advantages to using bottom dump trucks? (give at least 2)?

8. List and define the three types of blade adjustments.

9. Summarize advantages and disadvantages of crawler cranes.

10. What does the word "slew" mean with regard to tower cranes? what are two different ways a tower crane can slew?

11. List dynamic factors that affect crane capacity.

12. (6 pts) List the seven rules for pumping concrete.

13. What are the three rolling steps when paving asphalt?

14. What is TMPH? What is the possible consequence for not considering TMPH?

15. Why are cycle times typically larger for a hoe than a shovel?

16. (4 pts) Define the term of “windrow” in grader operations.

17. How can you minimize spillage from the blade?

18. (3 pts) In what soils is a vibratory pile driver/hammer effective?

19. (7 pts) List major factors that should be considered when laying out a construction site.

List 4 functions that required to process and produce suitable aggregate materials

Answer 1

1. Because of the configuration. Hoe extractor digs inwards while front shovel digs outwards which makes front shovel faster.

2. Advantages of crawler bulldozers- It's heavy duty tracks makes it spread its weight more evenly

It's heavy duty tracks makes it possible to go to places where other trucks cannot.

It can spin in its own axis

3. Advantages to using bottom dump trucks- Increased manoeuvrability

Operates on grades upto 35%

Payload is higher

4. Advantages of crawler cranes- It has the capacity to lift large loads.

It can travel with the load.

Disadvantages of crawler cranes - It is very heavy.So hard to move from one site to other.

It has to be disassembled for moving.

It is costly to mave crawler cranes from one site to other.