1. Outriggers are only to be used is special circumstances, but most lifts should be performed without them. True__,False False__
2. A crane is designed to pick up the same load in all 4 quadrants. True__, False__
3. Blocks under outrigger floats should be at least a) 2, b) 3, c) 4, d) 5 times the area of the outriggers.
4. Load charts are charts that give the cranes gross capacity under various conditions and situations. True__, False__
5. A crane’s leverage is equal to the crane weight times the horizontal distance from its tipping axis to its centre of gravity. True__, False__
6. The load’s leverage is equal to the load weight times the horizontal distance from the tipping axis to the loads centre of gravity. True__, False__
7. A mobile crane is stable when the load’s leverage exceeds the crane’s leverage. True__, False__
8. A crane’s centre of gravity changes as the upper works rotates. True__, False__
9. A crane’s capacity changes when it’s upper works move from quadrant to quadrant. True__, False__
10. A crane’s capacity increases as the boom telescopes out. True__, False__
11. Overloading a crane can cause a) tipping, b) structural failure
12. Important considerations before making a lift include: a) load radius, b) quadrants load will be rotated through, c) load’s weight, d) wind speed and direction, e) load placement
13. A load chart is not crane-
14. When using the load chart you must know: a) configuration of crane, b) quadrants of operation, c) boom length, d) boom angle, e) load radius, f) weight of line, hooks, hook bock, slings etc.
15. A crane’s configuration includes a) Use of outriggers, b) Jib or boom extensions.
16. The four quadrants are: a) top, b) bottom, c) over the front, d) over the back, e) over the sides.
17. The boom length is the distance from the hinge pin to the centre of the sheave on the boom tip. True__, False__
18. The boom angle is the angle the boom makes with the horizontal. True__, False__.
19. The load radius is the horizontal distance from the boom pin on the crane to the centre of gravity of the load. True__, False__
20. What percentage of all crane injuries occurs when getting on and off the machine?
