tight fit

That has got to be the most awesome crane I've ever seen! /forum/images/graemlins/shocked.gif
 
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Goofy non-related question: One day on the way from Washington DC to Baltimore, we come over this hill on the 95. When you crest the hill, you can see all of Baltimore. I noticed 2 things. One, there were a lot of the types of cranes that you're showing in the picture, all over the city for building big buildings. The second thing...this was a weekend and not a work day...all the cranes were pointing the exact same way.

Any ideas why? I was thinking they point them directly into or with the wind.

love
nick

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I wondered the same thing until I watched one like Jelte posted on my street during a storm this summer. They simply blow around in the wind like a weather vein. /forum/images/graemlins/headboom.gif
 
So the last post was a year and a week ago shy 2 hours.

The tower cranes are set to weather vein when not in use, this is done to reduce the stresses involved with wind loading. Several cranes on the coast have made it through hurricanes when the buildings did not.
 
They work like a weather VANE (not vein), they are allowed to spin so the counterweights face the wind (boom trailing).

It would be very stressful to try and resist the wind loads if you think about it, a several hundred foot boom can catch alot of wind.


While working, if a storm brews up and the ground crew has to quit, the crane operator will set the crane in the weather vane mode an ride out the storm. They are safer in the crane than trying to climb down, several cranes have been struck by lightning with the operator inside, no harm done.
 
[ QUOTE ]
They work like a weather VANE (not vein), they are allowed to spin so the counterweights face the wind (boom trailing).

It would be very stressful to try and resist the wind loads if you think about it, a several hundred foot boom can catch alot of wind.


While working, if a storm brews up and the ground crew has to quit, the crane operator will set the crane in the weather vane mode an ride out the storm. They are safer in the crane than trying to climb down, several cranes have been struck by lightning with the operator inside, no harm done.

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Bingo! I second that as a former crane operator. Much smaller crane of course than in those pictures but to get licensed you need to know more than just the crane you will operate.
 
Thanks for reviving this thread, great pics and what a wierd crane, I never seen a mobile one like that before but it's ideal for reaching over buildings as it doesn't have the boom trying to cut into the building at an angle.

That tree was really close to the wall, darn well it had remote control so the operator could be right in the action.

Great story, I wonder what the last lift weighed?
 
I realize this thread is very old but obviously just reading it now...how much is a crane like that to rent for the hour, day ??? that really is an amazing machine.
 
That crane is just about the coolest thing I've seen but it must cost a BOMB to rent out.

Hopefully dependable 'cuz it looks like a lot of parts that might go a bit wrong compared to a tele boom.

JP
 
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