Crane recovery fail - GIF

[hemmjo]

My opinion is the straps were probably inadequate, old, worn AND they were improperly secured to the crane. You cannot use straps where they are subjected to abrasion or damage from objects that impose any kind of concentrated force. The head of a bolt, of the rough edge of a casting, or the corner of a beam, etc. will create a very concentrated point load causing the strap to fail at that point.

The straps were probably attached by a diver with poor visibility and perhaps improper knowledge of rigging for a lift like that.

Below are 4 frames showing that the straps we improperly attached to the load.

Notice the first strap broke where it was in contact with the structure of the truck.
Should have used a proper chain attached to the truck then a proper shackle to the straps.


After the first strap book, there is no way the second would hold the load by itself.
But you can see that even this one failed where it was in contact with the structure of the truck.