Self-Test B-4.6: Rig Load for Cranes

Complete Self-Test B-4.6 and check your answers.

1. Which term best describes supportive material intended to keep a load off the ground and allow for proper and safe application of slings?
   1. Blocks
   2. Cribbing
   3. Sheaves
   4. Counterweights

2. Which term best describes an auxiliary hoist line, which is typically lighter and faster than the main hoist?
   1. Tagline
   2. Pendant
   3. Forestay
   4. Whipline

3. Which term best describes the horizontal distance from the centreline of the hook to the centreline of crane rotation??
   1. Swing
   2. Whipline
   3. Hoist line
   4. Boom radius

4. Which terms best describes the dangerous condition of force applied to the boom at an angle from vertical?
   1. Side-loading
   2. Side-stressed
   3. Boom-torque
   4. Non-vertical lift

5. Which term best describes support members that project beyond the natural outline of the crane to prevent toppling?
   1. Side-loads
   2. Outriggers
   3. Gantry masts
   4. Headache ball

6. Where would a worker find a crane’s capacity rating chart?
   1. In the main office
   2. With the foreman
   3. Affixed to the crane
   4. On the manufacturer’s website

7. Which of the following terms best describe a bridge-like crane often found affixed to rails or on wheels?
   1. Gantry
   2. Crawler
   3. Boom truck
   4. Telescoping

8. The load weight calculations does not include the rigging equipment such as spreader bars, slings, and block hooks as these are integrated within load calculations.
   1. True
   2. False

9. Which of the following term is not a boom style?
   1. Fixed
   2. Lattice
   3. Telescoping
   4. Rough terrain

10. Which phrase best describes how a crane’s load capacity changes as the boom radius increases?
    1. Increases
    2. Decreases
    3. Is not affected
    4. Depends on side-loading

11. Which term best describes a supplementary weight added to the base of a crane?
    1. Ballast
    2. Gantry
    3. Load chart
    4. Counterweight

12. What size should outrigger pads be?
    1. Outriggers should never use pads
    2. Three times the area of the floats
    3. Size of the pads is not relevant
    4. Approximately the size of the floats

Answer Key: Self-Test B-4.6 is on the next page.