Possible Causes Of A Mobile Crane Overturning On A Construction Site


Identify possible causes of a mobile crane overturning on a construction site.

Causes such as the failure to set the crane on a level footing,

  • Siting it on poor and unconsolidated ground and
  • Failing to distribute the weight of the crane by providing adequate timber beneath outriggers.

Additional factors affecting

  • Stability would be the condition of the tyres,
  • Mechanical or hydraulic failure,
  • Overloading, incorrect slinging resulting in an unstable load,
  • Operating when winds were too strong and driver error such as slewing too quickly, causing an abrupt movement of the jib,
  • Travelling with a load over poor terrain and
  • Colliding with structures, overhead cables or another vehicle.

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