As offset angle increases, capacity and strength of the jib:

As offset angle increases, capacity and strength of the jib:

• A. Increase; Decreases
• B. Decrease; Increases
• C. Increase; Increase
• D. Decrease; Decrease

Answer: (A)

Increasing the offset angle changes how the load path sits relative to the jib, creating a trade-off in the crane’s behavior. As you offset more, the geometry can allow a larger load to be carried at the lifting point in that configuration, so the apparent capacity goes up. At the same time, the same offset tends to put more bending stress into the jib structure itself, reducing the strength margin of the jib because it has to resist greater moments and bending with that offset. In short, a larger offset can raise the usable capacity in that setup while simultaneously weakening the jib’s structural strength, so always refer to the crane’s load chart for the exact numbers in a given configuration.

Increasing the offset angle changes how the load path sits relative to the jib, creating a trade-off in the crane’s behavior. As you offset more, the geometry can allow a larger load to be carried at the lifting point in that configuration, so the apparent capacity goes up. At the same time, the same offset tends to put more bending stress into the jib structure itself, reducing the strength margin of the jib because it has to resist greater moments and bending with that offset. In short, a larger offset can raise the usable capacity in that setup while simultaneously weakening the jib’s structural strength, so always refer to the crane’s load chart for the exact numbers in a given configuration.