4.2. Stability Considerations

Try these first

1. 1.

   What are the two main types of jib cranes discussed?

   Hint

   One type can adjust its reach between horizontal and vertical.

2. 2.

   What is one key advantage of a climbing cage?

   Hint

   Think about the initial setup of a crane.

3. 3.

   What is the primary advantage of using an articulated jib crane?

   • A) Its lower cost
   • B) Its flexibility in height adjustment
   • C) Its speed of operation

   Hint

   Think about what makes this crane different.

4. 4.

   True or False: Lateral bracing is necessary for stability beyond a height of 120 meters.

   • True
   • False

   Hint

   Recall the height limits discussed.

5. 5.

   A construction site needs to erect a tower crane that will exceed 300 meters. What options can the construction manager consider, and how might the crane's height impact foundation design?

   Hint

   Think about the conditions under which standard cranes can operate.

6. 6.

   Analyze the impacts of an out-of-level surface on crane stability and describe how you would mitigate this risk during operation.

   Hint

   Consider safe practices for crane placement.