Mar 14 (edited) • General discussion
Case Study 101: Tower Crane Jib Collapse (Possible Rope Entanglement)
Incident Overview
During lifting operations on a residential project in Kensington, London, a tower crane jib collapsed onto the construction site. Images from the incident potentially show the hoist ropes running across sections of the scaffolded building, suggesting the hook block or rope may have become entangled with the scaffold structure. The site was evacuated immediately and no injuries were reported, but the potential consequences were severe.
What Went Wrong
Hoist rope or hook block likely became caught on scaffold structure
Crane movement continued while rope was restrained
Abnormal lateral forces transferred into the crane structure
Possible overload of the jib connection or slew system
Key Lessons Learned
Tower cranes are designed for vertical lifting, not restraint forces
Hook block and rope position must be constantly monitored near structures
Entanglement hazards can generate structural loads far greater than the lifted load
Safety Recommendations
Control crane operating envelopes near scaffolding and buildings. Maintain visual control of the hook block at all times and stop operations immediately if abnormal resistance or rope tension is observed.
Incident source
Tower crane collapse reported on a residential development site in Kensington, London (March 2026). Incident under investigation by authorities.
● LOLER Reg. 8 – Lifting operations must be properly planned and supervised.
● PUWER Reg. 11 – People must be protected from falling objects or plant movement.
● PUWER Reg. 4 – Equipment must be used safely within its intended limits.
● BS 7121-1 – Crane operations must account for surrounding structures and obstructions.
Key point
Crane structures are not designed to resist restraint forces caused by entanglement.
Wolf Lifting Dynamics – Safe Lifting UK | Case Study 101
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Case Study 101: Tower Crane Jib Collapse (Possible Rope Entanglement)
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