What is the history of the tower crane in the modern construction industry?
479141
Here is a little to get you started.\n\nhttp://www.construction-equipment.info/construction-cranes.html?source=yahoo&campaign=395323\n\nhttp://en.wikipedia.org/wiki/Crane_(machine)
512280
if the crane isn't too high they just use another mobile crane to lift the counter weight into position. but i have also seen that sometimes they use a special helicopter to lift the weight to the height that is needed.
1128616
i know this sounds daft but when i worked in the building trade usually by the crane itself and a smaller crane onsite.
1134328
it opened and was dedicated oct 2003\n\nbut the had to redo some of the exterior sheet metal because the iron workers suck\n\nthey should leave sheet metal to the architectural tin knockers
240493
Depends on the type of crane.  There are tower cranes, crawlers, self-erecting crawlers, and mobile cranes to name a few.\n\nMobile cranes transport themself to the job site.  If they have a lattice boom instead of a hydraulic boom then the boom segments will be brought in on a flat bed trailer and attached to the crane.\n\nA crawler that isn't self erecting will require a second crane to help put it together.  The different pieces will come in on semi-trailors and will be lifted off of the trailers and assembled.\n\nA self-erecting crawler will have the engine and cab assembly come in on one trailer then it will actually use something to support itself as they back the tracks in under it.  Then they will put on their own counter-weights and then attatch the boom.\n\nA tower crane requires another crane on the site to erect it.  Some of the tower cranes will actually be able to add in additional sections to raise their height.\n\nAs far as removal it's the reverse of erection.  If the crane isn't self erecting then you need to bring in another crane to put it together or take it apart.
619968
The solidity of the ground. The ground was too soft to support the weigfht of the tower. The distribution of the towers weight on it's surface area required a more compact soil to be build upon. The engineers of that time didn`t have the means to predict this problem accuratly and hence the tower started leaning a fraction of an inch each year since the time it was built, untill it reached the weird inclination it has now.
61618
Go to this link..there is a table there where you can see all the tallest building recorded.\nhttp://en.wikipedia.org/wiki/World's_tallest_structures\n\nhope this helps :)
1164786
Go and visit this link to see upcoming construction projects in Doha:\nhttp://www.urbanplanet.org/forums/lofiversion/index.php/t18038.html\nYou might have heard about the project of The Pearl\nhttp://www.thepearlqatar.com/main.aspx\nOther site to visit with the Doha Sport City Tower still under construction (should be achieved for Asian Games on 12/06)\nYou can also check Doha and Qatar other towers\nhttp://skyscraperpage.com/cities/?buildingID=44729\nA must see, the Aspire Academy for Excellence in sport. Great website with tons of pix of all facilities. \nhttp://www.aspire.qa/topics/index.asp?level=1&temp_type=44\nFor oil and gas projects, I do not have much. Very often for security reasons there are no pix available or lots of details given. You can still check sites like\nQatar Petroleum and Rasgas
610522
The United states Army corp of Engineers was the major builder, with lots of help from panamanieans and americans alike. It was built in the early 1900's (1904-1914)
8294
I wondered about this a few years ago...found the solution online.  Very cool engineering trick.  I rememebered where I found the solution.  The cranes grow themselves.  Check out the link below...with pictures.
963621
A modern industrial robot is simply a 5 or 6 DOF (Degree Of Freedom) multi-axis machine running 4 or 5 motors under rotational coordinate controls.\n\nThe first industrial robots are identified by their use of hydraulic power and hydraulic servo motors for position and velocity control. Advances are the conversion to electric motors - first DC servo motors and now AC servos. The future is the use of linear motors.\n\nUse Yahoo and search under "Industrial Robots", "Cincinnati Milacron", "Hydraulic Robot" and see what pops up.
552897
As far as I know they spend many thousands of dollars each year on stablizing the foundations of the tower as well as the rest of the structure to ensure it doesnt topple over.
113312
All in one lump?\n\nGoogle "100 ton crane"\n\nThere are many shipyard cranes that can do this.\n\nGoogle "rolling platforms"\n\nIf it is divided up a train can move it.\n\nYou may want to check out "Euclid Trucks"  or "Ore trucks"\n-- I don't know what the max there is.\n\nMight be some "Mining shovels" too.\n\nFor airplanes, the Russians make a very big one called an Antonov something.  Google "Antonov Heavy Airlift"\n\nProbably needs new tires often, and very strong runways.\n\nThat's all I can think of, ships are too obvious. Keep it under 13 feet height to use highways.  Maybe some special routes for 13.5 and higher, you need the Master Truck Router, for that.  Why not Google it to see what comes up?
984691
Getting a bulding's history can be tough, and unless it's a famous building, you're not likely to find much on the Internet. I'd suggest hitting the local library and looking for books on local history first; if nothing pans out there, you can ask a librarian to let you look at old copies of newspapers, although that can be a bit exhausting (especially if your library hasn't switched away from microfiche yet...)\n\nAside from book research, I'd see if you could track down the owner of the building or even people who have worked there a long time or used to work there.
1070945
if it is a mass produced crane, look up the manufacturer's number and call them up to request the info or do your best to research it online. if it is some kind of home-made or one-off crane you are SOL unless you can come up with the math and physics to figure it out. which is a whole other question.
452103
The crane is first assembled using a portable crane. Then sections are added to it using a device called a top climber. Basically they detach the top while keeping it balanced on the tower, jack it up 20 feet, insert a new section of tower using the detached but still balanced crane itself (yikes!), and re-attach the crane to the new top.
578333
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