Load Charts

Front 1

1. Crane configuration includes:

Back 1

Reeving, boom length, conterweight, on outriggers, on rubber, extensions and jibs stowed or mounted, off sets, wire rope type of construction.

Front 2

2. Capacities above the bold line on the load chart are based on:

Back 2

B. Structural strength

Front 3

3. If replacing the hoist line wire rope on a crane, how do you determine the size or type of wire rope to use?

Back 3

D. Use Manufacturer's operator's manual or load chart

Front 4

4. Net capacity is equal to:

Back 4

A. Gross capacity minus capacity deductions

Front 5

5. Which of these conditions will not dramatically affect the values illustrated on load charts?

Back 5

D. None of the above

Front 6

6. If a jib is erected but not being used, it is treated as a deduction from the cranes:

Back 6

A. Gross capacity

Front 7

7. A truck crane is rated at what percentage of its load capacity?

Back 7

C. 85%

Front 8

8. When determining the "gross load" the best method is:

Back 8

B. Get an accurate load weight and add the rigging.

Front 9

9. Tipping capacities of crawler cranes are based on what percentage of tipping?

Back 9

D. 75%

Front 10

10. How does the operator determine if correct load chart is being used?

Back 10

A. Matching Serial Number

Front 11

11. In a range diagram, boom length and angle can be used to determine:

Back 11

B. Load radius

Front 12

12. Only approved attachments or extra counterweights made by the manufacturer should be placed on the rear of crane because:

Back 12

A. They could cause a backward stability problem

Front 13

13. If not listed in the load\capacity charts for a telescopic crane and you are in between boom length, you should:

Back 13

A. Use the next longer length

Front 14

14. The jib capacity is 8 tons and the ball weighs 900 lbs. What is the heaviest load that can be lifted safely?

Back 14

C. 15,100

Front 15

15. When using load\capacity charts, what does the term "jib angle to ground" refer to?

Back 15

C. Main boom angle minus the jibs offset

Front 16

16. When making a lift on the main boom of an RT, the stowed lattice swing-a-way section:

Back 16

A. Should be considered part of the cranes deductions

Front 17

17. When you change the jib to ground angle from 40 degrees to 30 degrees, you have:

Back 17

D. Decreased the capacity of the jib

Front 18

18. A lattice boom truck crane with 120 ft. boom will be operating at a 42 ft. radius. The load chart shows an entry indicating 25,000 lbs. at a 40 ft. radius, followed immediately by an entry listing 20,000 lbs. at a 45 ft radius. What is the crane's capacity at the 42 ft radius?

Back 18

A. 20,000 lbs

Front 19

19. A truck crane operating with outriggers fully extended and set, does not have a fifth front outrigger, the operator should:

Back 19

B. Refer to the manufacturer's working area diagram

Front 20

20. When using a mobile crane on a barge, the crane's load capacity chart shall be:

Back 20

A. Replaced by a list chart

Front 21

21. A crane's jib is offset 15 degrees versus its original 0 degrees offset, but the boom angle remains unchanged. In this situation, the load radius:

Back 21

A. Increases

Front 22

22. If the jib is offset, the crane's capacity will:

Back 22

B. Be reduced

Front 23

23. If a bold line is shown on a load chart, the capacities below the line:

Back 23

C. Are based on the stability of the crane

Front 24

24. Rough terrain crane capacities are generally greater over the:

Back 24

A. Front

Front 25

25. On duty cycle operations, most manufacturers require a crane's load chart capacity to be reduced by:

Back 25

C. 20%

Front 26

26. Truck crane capacities are usually greater over the:

Back 26

B. Rear

Front 27

27. A truck crane is set up on outriggers. The part of the load chart governed by stability is based on what percentage of the crane's capacity?

Back 27

A. 85%

Front 28

28. You plan to pick a load you are told weights 36,500 lbs. Line pull on the crane you are operating is 9,000 lbs. How many parts of the line will you need?

Back 28

C. 5

Front 29

29. If a jib is erected but not being used to lift the load, you should make a deduction from the gross capacities listed in the load chart based on:

Back 29

B. The effective weight of the jib

Front 30

30. On a crawler crane, the part of the load and chart governed by stability is based on what percentage of its capacity?

Back 30

D. 75%

Front 31

31. When working on rubber, cranes are rated at what percentage of tipping?

Back 31

B. 75%

Front 32

32. If determining boom tip elevation is important, the best way to determine this is to:

Back 32

B. use range diagram

Front 33

33. When operating a crane on a barge, the list chart must be provided by:

Back 33

C. The manufacturer

Front 34

34. The capacities listed in a local chart indicate the _____that the crane can safely lift.

Back 34

D. Gross load

Front 35

35. In load charts that have capacities divided by a solid black line, the numbers above the line indicate that capacities are limited by?

Back 35

C. Structural failure

Front 36

36. Within what percentage of level on most telescopic boom cranes have to be for the gross ratings in the load chart to remain valid?

Back 36

A. 1%

Front 37

37. Unless the manufacturer states otherwise, the net capacity of a crane is the capacity listed in the load chart:

Back 37

A. Minus the weight of the rigging and all attachments

Front 38

38. A crane's rated capacity is based upon:

Back 38

A. Structural and stability

Front 39

39. When operating a Crawler crane what is the most unstable allowable quadrant of operation?

Back 39

C. Side

Front 40

40. When operating a truck crane what is the most unstable allowable quadrant of operation?

Back 40

C. Side

Front 41

41. Should the load be applied when determining the proper boom angle?

Back 41

A. yes

Front 42

42. When working on outriggers, the only time they should be less than fully extended is when:

Back 42

D. There is a load chart for this operation

Front 43

43. What quadrant produces the least amount of ground pressure on a lattice crawler:

Back 43

B. Side

Front 44

44. A work area chart is used to:

Back 44

B. Identify capacity changes due to operational quadrants.

Front 45

45. When working on outriggers, the only time they should be less than fully extended is when:

Back 45

D. There is a load chart for this operation.

Front 46

46. Should the load be applies when determining the boom angle in relation to the load charts?

Back 46

A. Yes

Front 47

47. If the crane's boom length falls between the lengths listed in the load chart, you should use the capacity listed for:

Back 47

D. The next longest or the next shortest boom length, whichever is the lower capacity.

Front 48

48. Head room is the distance between:

Back 48

C. Boom tip & load handling devices.

Front 49

49. The effective weight of a stowed jib compared with an erected jib is:

Back 49

A. Less

Front 50

50. On some cranes, jib capacity is based on the angle the jib makes with horizontal (ground). How is this calculated?

Back 50

A. Boom angle minus jib offset