What can cause a crane to tip over or fail structurally?

A crane can tip over or fail structurally primarily due to overstressing. When a crane is subjected to loads that exceed its rated capacity, the structural components can experience excessive forces that may lead to deformation or failure. Overstressing can occur from lifting loads that are heavier than what the crane is designed to handle, which puts significant strain on the boom, hoist, and other critical parts.

Maintaining proper load limits is essential for ensuring the stability and structural integrity of the crane. Engineers design cranes with specific load ratings, and exceeding these ratings can compromise safety. Additionally, the distribution of weight and the center of gravity play vital roles in maintaining structural integrity—an overstressed crane may not be able to support its load without risking a catastrophic failure, such as tipping over.

In contrast, while factors such as incorrect positioning (wrong location), instability (unsteady), or maximum height can contribute to hazardous situations, they do not directly cause a structural failure in the same way that overstressing does. Addressing load limits through proper training and adherence to safety guidelines is crucial for crane operation safety.