Wow! It's difficult to tell from the perspective in the picture, but it
looks to me like the crane was set excessively far away from the lift
point and had the boom at too shallow an angle, looking 45 degrees or
A couple years ago I got to play with a 60T Grove moving 40' containers
and we had it setup only about 40' from the crane boom pivot point to
the lift point and the boom extended to give probably a 60 degree angle
with loads of around 12,000# for a container and a small amount of
On Thu, 20 Nov 2014 18:51:32 -0600, Ignoramus11173
Yes, bad angle and probably a lot heavier than the crane operator
thought. That's a bad combination!
Yeah, the operator will probably get a heavy fine (if not loss of his
license) plus damages. Somebody wasn't paying attention. if the
crane owner hadn't maintained the rig, it may fall on him instead,
though. The investigation should be interesting. How many cranes now
have auto-recording equipment? Probably all the computerized models,
I started out with nothing and
I still have most of it left!
They have load cells up the boom at the top pulley. They have a cable
reel on the outside of the boom that reels out cable to that load cell.
There is a computer in the operator's cab that give all the relevant
information, load ratings based on boom angle, CG calculations, etc.
I'm fairly sure a company that can afford a $750K crane would have
insurance on it.
Smart ones would. But I wonder if any of the guys on that job in Oz
even spoke English, let along Australian.
It's required by law in many states, if not by fed regulations.
OSHA evidently added regs requiring overload protection in 2010, but
that doesn't cover Oz. <shrug> From 3 pages of regulations to 43
pages in one fell swoop. Amazing.
"Government is not reason; it is not eloquent; it is force.
Like fire, it is a dangerous servant and a fearful master."
Those cranes do have computers monitoring and giving warning alarms, but
it's still possible for things to go bad too fast to react or to
miscalculate your load. If the computer gave them a load rating based on
the boom angle that was just a bit over the presumed weight of the tank,
and the tank snagged and added extra load mid lift it could well have
been all over by the time the operator recognized the alarm.
I recall seeing a photo of a tree removal gone bad. They were
cutting down a tree behind the house, and had a truck mounted
crane reaching over the roof to the tree.
When you saw it, the tree was still in the back yard but the
trunk was facing the stars at say 130 degrees, with the boom
having cut the house in half.
A host is a host from coast to firstname.lastname@example.org
& no one will talk to a host that's close..........................
I worked on German made Tower Cranes with horizontal booms, twenty
years ago, that had a load limiting device on them. They wouldn't
pick up a load that was too heavy for them and if you picked a load up
close to the tower and tried to move it out the boom to a position
where the load was too heavy for the crane the in/out function stopped
any further outward movement.
I was told by the crane operator that this feature was common on tower
Look at the retarded moment at 1:27, dumbass trying to forklift up the
oxygen tank bank, you can expect anything from a crew like that.
But I am glad that I do not have to deal with such huge tall things.
The tallest thing that I handled, was about 25 feet tall.
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