2.2. Stability and Center of Gravity

Try these first

1. 1.

   What does 'u' represent in crane stability calculations?

   Hint

   Think of the pivot point around which the crane may rotate.

2. 2.

   Define 'Operating Radius'.

   Hint

   It's how far the load can be from the center of the crane.

3. 3.

   What is the center of gravity in cranes?

   • The pivot point for rotation
   • The point where weight is balanced
   • The maximum weight a crane can handle

   Hint

   Consider where the weight is evenly distributed.

4. 4.

   True or False: Outriggers are only necessary for crawler-mounted cranes.

   • True
   • False

   Hint

   Think of how cranes balance loads.

5. 5.

   A crane with a load of 10 tons is positioned 15 meters from the tipping axis. Calculate the overturning moment if the height of the load is 5 meters.

   Hint

   Use the formula: Moment = Force × Distance.

6. 6.

   Analyze the scenario where a truck-mounted crane fails to use outriggers while lifting. Discuss the potential risks and recommend safety measures.

   Hint

   Consider both the mechanical and human factors involved in crane operation.