Which factor is crucial when determining the capacity of construction cranes?

The capacity of construction cranes is fundamentally influenced by the crane's center of gravity and boom length. Understanding the center of gravity is essential because it affects the stability of the crane during lifting operations. If the center of gravity is not properly maintained or adjusted according to the load, it can lead to a tipping hazard, compromising safety and efficiency.

The boom length is equally important, as it determines how far the crane can reach and how much weight it can lift at various distances. A longer boom can reach farther, but it may also reduce the maximum lifting capacity due to increased leverage. Engineers and operators must always account for both the center of gravity and the boom length when calculating the crane’s lifting capacity to ensure safe and effective operations.

This comprehensive understanding allows operating engineers to make informed decisions about crane selection and operation, ultimately leading to safer construction practices.