2.2. Interpreting the Diagram

Try these first

1. 1.

   What are outriggers and why are they important for crane stability?

   Hint

   Think about stability and support.

2. 2.

   What should a crane operator do when the wind speed exceeds 72 km/h?

   Hint

   Consider safety guidelines.

3. 3.

   What percentage of crane incidents is due to improperly extended outriggers?

   • 25%
   • 50%
   • 75%

   Hint

   Think about the statistics provided.

4. 4.

   True or False: Cranes must operate within a distance of 3 meters from high voltage power lines.

   • True
   • False

   Hint

   Reflect on safety guidelines.

5. 5.

   A crane is required to lift a load to 50 meters height with a horizontal reach of 30 meters. Using the crane range diagram, determine the appropriate boom length and discuss the safety measures needed for such operations.

   Hint

   Inspect the diagram carefully.

6. 6.

   If the wind speed increases to 80 km/h while lifting a load, what should the operator do? Calculate the lifting capacity adjustment if the original capacity was 20,000 kg.

   Hint

   Remember how wind affects stability.