7.1. Summary of Crane Types

Try these first

1. 1.

   What does the operating radius refer to in crane operation?

   Hint

   Think about how far the crane can reach.

2. 2.

   Why are outriggers necessary for a truck-mounted crane?

   Hint

   Consider what happens when the crane lifts heavy loads.

3. 3.

   What is the Safe Working Load (SWL) of a crane?

   Hint

   Consider the crane's design and manufacturer's guidelines.

4. 4.

   True or False: Increasing the operating radius increases lifting capacity.

   • True
   • False

   Hint

   Recall the relationship between radius and stability.

5. 5.

   A truck-mounted crane is rated for a maximum capacity of 100 tons on flat ground with outriggers extended. If deployed without outriggers, what should be the new maximum capacity?

   Hint

   Think of the impact of outriggers on stability.

6. 6.

   A crawler crane has a maximum capacity of 150 tons at a radius of 20m. If the operating radius increases to 40m, what should be done to ensure safety while lifting?

   Hint

   Recall the effects of a shifting center of gravity.