Heavy lift ring crane - video

[Frank S]

That crane was already at or slightly above its rated capacity and the least amount of additional drag caused by the dozer blade or loader bucket which ever the case may be as all it took to drive the point home. I imagine there were several brown shorts after that , hope the operator survived.

[PJs]

And the operator says; And What exactly am I lifting? Know thy limitations!

[Frank S]

He probably would have been fine had he raised the dozer until it was above the bank before swinging or if he could have boomed up more before awinging after he had the dozer above the edge.

[Moby Duck]

At around 10 seconds two people appear running on the left of the crane cab. I think the second one in brown is the crane driver making a hasty exit.
As soon as the boom hits the concrete edge and breaks, there is a huge amount of black dust that appears to fall off it. Rust perhaps?

[Toolmaker51]

At around 10 seconds two people appear running on the left of the crane cab. I think the second one in brown is the crane driver making a hasty exit.
As soon as the boom hits the concrete edge and breaks, there is a huge amount of black dust that appears to fall off it. Rust perhaps?

Of the two exiting, one in blue was near the edge of the excavation, maybe a spotter. He was on the run sooner, 'joined' by the one in brown, who may have been the operator. He probably had different color pants just minutes before...He looks to be stepping down such as he would exiting cab. Those two could run a few steps and be in the clear.
Another WTF is two rappelling to pit floor. Perspective makes closer man very close to that crane block flying around wildly. Even 50' away, he had to see it; that would be a longer 'oh s_ _ _' moment than the crane tipping.
Frank S is right, operator should have continued lifting before swing. There are several anchor rods protruding from pit face, one really looks to get jammed in the front left track of bulldozer, I'll bet that is what really started things downhill. Few of the other workers seem to know anything was going on. The 6 or so that do, might have started scattering when outboard track of crane started to lift, or heard something give way.

[Jon]

Two crane GIFs from typhoon Mangkhut, which made landfall in The Philippines yesterday.

First, a close call:



And a fail:




What's the correct procedure for handling a crane in a major storm? Disassemble? Secure? Was the crane in the first GIF intentionally left to rotate for the storm, so that it spins rather than collapses?

[Toolmaker51]

Two crane GIFs from typhoon Mangkhut, which made landfall in The Philippines yesterday.
First, a close call:

I'm certain this is an apartment kitchen. Can you imagine morning tea in one hand, other hand filming this?
At least they didn't drop the phone, nor appear to have ducked.
I'd be, after the third go-round; Mornin' dear, spot of tea?, come take a look at this storm!

[Drew1966]

Two crane GIFs from typhoon Mangkhut, which made landfall in The Philippines yesterday.

First, a close call:

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And a fail:

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What's the correct procedure for handling a crane in a major storm? Disassemble? Secure? Was the crane in the first GIF intentionally left to rotate for the storm, so that it spins rather than collapses?

My family lived in Hong Kong during the late 80’s, and the new China Bank building was being constructed directly in front of our apartment (albeit a good thousand yards away).
As I am sure you are aware, Hong Kong gets its share of typhoons.
When the work was stopped, say on a Sunday, the four tower cranes had large “flags” hung off them and the slew(?) unclutched. This allowed them to turn with the wind. Also, the crane towers were well tied into the building structure itself, I assume to give added rigidity.

[hemmjo]

The operator also had the boom of the crane improperly aligned with the tracks for that lift. On that machine, the tracks appear to be longer that they are wide. He should have had the boom about 30-45 deg to the right when he began the lift, then swung to 30-45 deg left to set it down. It appears he is already about 30-45 left when he began the lift, the tried to swing toward 90 deg (the weakest position on the machine) when the disaster happened.

[Jon]

After the typhoon: