Red Seal Tower Crane Operator Practice Exam 2026 – Complete Test Prep

Tower cranes can be classified into two main categories based on their construction: top-slewing cranes and luffing jib cranes.

Top-slewing cranes are characterized by having a horizontal jib that rotates around a vertical mast. This design allows for high lifting capacities and a larger working radius, making them suitable for construction projects that involve tall buildings.

Luffing jib cranes, on the other hand, have a jib that can change its angle relative to the horizontal, allowing the crane to lift loads with greater precision and minimize the swing of the load. This feature is particularly beneficial in tight urban settings where space is limited.

Both of these types of cranes are integral to modern construction and have unique advantages based on the demands of the project at hand. Understanding these types helps operators choose the right crane for specific tasks, considering factors like the site's spatial constraints and the required lifting capacities.

The other categories mentioned, such as fixed and mobile cranes, focus more on the mobility of the cranes rather than their construction types. Similarly, electric and diesel classifications refer to the power sources, while single-girder and double-girder distinctions relate to the crane's girder system rather than the types of tower cranes specifically. Thus, the best classification that