6. Modified Cranes for Heavy Lifting

Try these first

1. 1.

   What does 'u' represent in crane operations?

   Hint

   Think about the parts of a crane.

2. 2.

   Define 'Operating Radius'.

   Hint

   It connects how far the load is from the crane.

3. 3.

   What is the primary purpose of outriggers in crane operations?

   • Increase lifting capacity
   • Provide stability
   • Enhance speed

   Hint

   Consider what happens when a crane is lifted.

4. 4.

   True or False: The maximum lifting capacity of a crane increases with increased operating radius.

   • True
   • False

   Hint

   Think about how a load's position changes.

5. 5.

   A lattice boom crane has a tipping load of 300 tons and operates under a guideline recommending 75% maximum load. Calculate the Safe Working Load and justify why understanding this is critical.

   Hint

   Remember to apply the percentage given correctly.

6. 6.

   If a telescopic boom crane is incorrectly used without outriggers on an incline, and it has a rated capacity of 100 tons, what is the reduced lifting capacity? Explain how this demonstrates the importance of using outriggers.

   Hint

   Consider what outriggers do to enhance stability.