2.5.2 Applications

Cranes designed for use outdoors incorporate features not usually found on those designed for indoor use. They are built with weather protection for critical components, corrosion-resistant materials, and structural elements that may include an additional thickness to account for corrosion over time. Storm anchors are necessary to prevent the crane from being moved along the crane tracks by high winds. These points should be considered when purchasing a second-hand crane for outdoor use or relocating an indoor crane for that purpose.

Important factors to consider in crane selection

  • Duty Rating: This defines how often the crane will be used and how much load it will handle relative to its maximum capacity. The crane's duty rating must be suitable for the application.  A crane that lifts its maximum load continuously during a 24-hour shift does more work and requires a higher duty rating than one used a few times a day and only occasionally lifting near its maximum capacity. It is essential that the current and foreseeable duties of the crane are carefully considered before purchase. If a crane is used beyond its designed duty, it will affect safety, require more frequent inspections and maintenance, and its lifespan will be reduced.

  • Hoist and Travel Speeds: Variable or slow speeds are needed for precision. Higher speeds may be required for long distances or high lifts.

  • Control System Type: The choice of control system will depend on the operator's position, movement requirements, and is configured for its environment and application. For long-distance travel, cab control may be the best option. If the operator needs a broader view of the work area or must operate from different levels, remote control may be more appropriate. For tasks where the operator needs to sling the load and wants easy access to controls, pendant control may be the preferred option.