How to build a crane

glatt · 10-11-2008, 09:40 AM

There was also some sort of sleeve that wrapped around the tower and seemed to be able to hydraulically jack segments up somehow. I've heard of cranes that are basically self erecting, and they jack them selves up with these sleeves, and then add segments underneath with their own booms. These guys weren't doing that, so I have no idea what this sleeve does.

glatt · 10-11-2008, 09:45 AM

Actually, now that I look at the first picture. I think the sleeve wrapping the tower supported the entire crane while the telescoping crane removed segments from the tower. I think the tower crane used to be taller that the new building in the background, and the telescoping crane removed segments until it was low enough to remove the booms from the tower crane. Then it probably took the rest of the tower down.

xoxoxoBruce · 10-11-2008, 09:50 AM

Quite often, in new construction, those tower cranes are not removed at all. They become the elevator shafts of the completed building.

10-11-2008, 09:40 AM	#1
glatt ™ Join Date: Jul 2003 Location: Arlington, VA Posts: 27,717	There was also some sort of sleeve that wrapped around the tower and seemed to be able to hydraulically jack segments up somehow. I've heard of cranes that are basically self erecting, and they jack them selves up with these sleeves, and then add segments underneath with their own booms. These guys weren't doing that, so I have no idea what this sleeve does. Attached Images

10-11-2008, 09:50 AM	#3
xoxoxoBruce The future is unwritten Join Date: Oct 2002 Posts: 71,105	Quite often, in new construction, those tower cranes are not removed at all. They become the elevator shafts of the completed building. __________________ The descent of man ~ Nixon, Friedman, Reagan, Trump.

10-11-2008, 09:45 AM	#2
glatt ™ Join Date: Jul 2003 Location: Arlington, VA Posts: 27,717	Actually, now that I look at the first picture. I think the sleeve wrapping the tower supported the entire crane while the telescoping crane removed segments from the tower. I think the tower crane used to be taller that the new building in the background, and the telescoping crane removed segments until it was low enough to remove the booms from the tower crane. Then it probably took the rest of the tower down.

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