OSHA 10 Hour Construction Program Practice Test

What is one key difference between hydraulic rough terrain cranes and crawler lattice boom friction cranes?

1. Height of the crane

2. Weight capacity

3. In boom hoist and load line controls

4. Number of wheels

The correct answer is: In boom hoist and load line controls

The key difference between hydraulic rough terrain cranes and crawler lattice boom friction cranes lies in their boom hoist and load line controls. Hydraulic cranes typically utilize hydraulic systems to lift and lower loads, which allows for smooth and precise control of these movements. They are designed to be more versatile and can range in height and weight capacities, accommodating various lifting needs on uneven terrain. In contrast, crawler lattice boom friction cranes employ a different mechanism that uses a lattice structure which provides stability and support for the boom while relying on friction to control their load line. This type of crane is particularly effective in lifting heavy loads over long distances, making it suitable for certain applications where rugged terrain or large loads are common. Understanding the differences in hoist and load line control mechanisms is crucial for selecting the appropriate crane for specific construction tasks, as they directly affect performance, efficiency, and safety in lifting operations. Other options, such as the height of the crane, weight capacity, and number of wheels, do not fundamentally differentiate these two crane types in the same operational context.