Red Seal Tower Crane Operator Practice Exam

How does a tower crane maintain stability?

1. Through a tall mast design

2. By using a rotating base

3. Through an anchored base and counterweights

4. By employing multiple arms

The correct answer is: Through an anchored base and counterweights

A tower crane maintains stability primarily through its anchored base and counterweights. The base of the crane is typically fixed to the ground, providing a strong foundation that helps distribute the weight of the crane and the loads it lifts. The anchors further secure the structure, preventing tipping or swaying during operation. Counterweights play a crucial role in balancing the crane, especially when lifting heavy loads. They are strategically placed on the opposite side of the load to counteract the forces acting on the crane. This balance is essential for safe operations, as it ensures that the crane can lift and move heavy materials without the risk of tipping over. In contrast, a tall mast design contributes to the crane's height but does not inherently provide stability, while a rotating base allows for movement but does not enhance stability alone. Multiple arms could offer additional lifting points, but they do not directly contribute to the stability of the crane as effectively as anchored bases and counterweights do.