What is an advantage of a tower crane?

The advantage of a tower crane is primarily due to its operator having an unobstructed view of the site. This clear line of sight is crucial for safe and efficient operation, allowing the operator to easily monitor the movement of loads, assess site conditions, and communicate effectively with the ground crew. The height and design of a tower crane provide an elevated position, enabling a comprehensive view of the entire job site, which is essential for coordinating activities and ensuring safety.

The other options revolve around physical mobility, setup speed, and frequent relocation, which are not typical characteristics of a tower crane. Tower cranes are designed for stability and heavy lifting, making them less suitable for easy movement or quick setups compared to other crane types. They are usually erected for the duration of a project and are not commonly moved around on site, which enhances their operational capability but does limit their mobility.