5. Importance of Crane Ratings

Try these first

1. 1.

   What is the minimum distance that cranes should maintain from high-voltage lines?

   Hint

   Consider safety regulations set by OSHA.

2. 2.

   What do outriggers help prevent?

   Hint

   Think about stability when lifting heavy loads.

3. 3.

   What is the minimum safe distance for cranes from power lines according to OSHA?

   • 2 meters
   • 5 meters
   • 3 meters

   Hint

   Think of the OSHA regulations.

4. 4.

   True or False: Lifting capacity increases as the radius decreases.

   • True
   • False

   Hint

   Consider how stability changes with distance.

5. 5.

   A crane must lift a load weighing 18000 kg at a horizontal distance of 15 meters with a required lifting height of 30 meters. The load chart indicates that the crane can lif 20000 kg at this radius. Calculate if the crane can safely lift the load, considering the rigging weight of 1800 kg.

   Hint

   Always sum up the rigging with the main load.

6. 6.

   The crane's boom length needed to lift a load 50 meters high at a 25-meter radius is determined using the crane range diagram. What boom length should you expect based on typical diagrams?

   Hint

   Referring to diagrams can help visualize and plan for different configurations.