Since Franna cranes are articulated and do not use outriggers, they are highly mobile but require strict adherence to safety protocols, especially when maneuvering with a load. Based on the photo, here is a quick breakdown of the setup:
Lifting Configuration
- The Crane: It is a 20-tonne capacity mobile crane. These are unique because they can “walk” with the load, making them ideal for indoor factory or warehouse installations.
- A spreader bar (or lifting beam) is being used. This is excellent practice as it ensures the lifting slings remain vertical, preventing the handrail from being crushed or buckling under horizontal tension.
- Synthetic round slings (purple) are attached to the handrail.
- The Load: The balustrade is an awkward, long shape. Using the spreader bar helps maintain its center of gravity and prevents it from tipping or spinning uncontrollably.
Key Safety Observations
If you are involved in this lift, keep these “Pick and Carry” essentials in mind:
- Ground Conditions: The concrete floor looks level and solid, which is vital for Frannas. Any side slope significantly reduces the crane’s rated capacity.
- Articulation Risk: Be aware that as a Franna turns (articulates), its stability changes. It is most stable when straight and least stable at full lock.
- Tag Lines: For a long load like this balustrade, it is often recommended to use a tag line (a handheld rope) to help a worker on the ground guide the piece without getting their hands in “crush zones.”
- Height Clearance: The boom is working near the roof trusses. Ensure there is a dedicated spotter to watch the gap between the boom head and the building structure.