4. Factors Affecting Lifting Capacity

Try these first

1. 1.

   What is the operating radius of a crane?

   Hint

   Think about the reach of the crane and where the hook is compared to the crane.

2. 2.

   Why are counterweights important on a crane?

   Hint

   Consider what happens when you have a heavy load on one side of a seesaw.

3. 3.

   What happens to lifting capacity as operating radius increases?

   • Lifting capacity increases
   • Lifting capacity decreases
   • No change

   Hint

   Think about balance while lifting objects.

4. 4.

   True or False: The crane’s lifting capacity is unaffected by the condition of the supporting surface.

   • True
   • False

   Hint

   Consider how your balance would be affected on different surfaces.

5. 5.

   You are operating a crawler-mounted crane with an established tipping load of 10000 lbs. What is the maximum safe load you can lift?

   Hint

   Remember the safety percentages for different crane types.

6. 6.

   A crane's effective operating radius increases by 30% due to boom angle adjustments. If its original radius was 15 meters, how much further can it reach?

   Hint

   Calculate percentage increases carefully.