I have always had a fascination with cranes of all types. The physics, geometries and dimensions are quite mind boggling, as are the lift capacities. At Six Corners [link] in Chicago, where some of my work hangs in a gallery, there is a large eight-story building undergoing significant rehabbing. In the rear of the building is a full bore ground up construction site to construct a new addition and a car park utilizing a Manitowoc 2250 lattice boom crane.
About the crane:
This unit, not even the largest in the Manitowoc family, there are three models still larger, can lift over 300 tons, can be set-up to be as tall as a 40 story building while using counterweights weighing up to 369,200 lbs.
This crane is big. With a full boom, which it is NOT using for this job, the crane has a curb weight of up to 750,000 lbs! And the best part is the beast crawled on a ramp into, what will eventually be…the basement, of all places.
2250 performance details at: [link]
2250 brochure at: [link]
Even the brochure is big at 108 pages! If nothing else, be sure to check out page 16, which shows drawings of how the crane builds itself at the site. Very cool!
One seriously hopes the ramp will remain available until the crane’s services are no longer needed so the beast can extract itself back to the street.
About the images:
Due to fencing, other heavy equipment, site materials and neighboring buildings causing interference there is no way to show the entire crane in one frame so I decided to get artsy with images of the boom. Color images were de-saturated in Photoshop and image --> adjustment --> threshold applied until the details were black (or white) with minimal loss then cropped to fill and resized for the Internet.
Advanced image critiques are most welcome regarding the series. The crane, on the other hand, does not want to hear anything from you. Trust me, I already asked it.
Thanks D!! The crane sits in an area about the size of a very large petrol station, surrounded tightly by buildings. I am trying to get on the roof of the existing 8-story building next to the site but so far no one has said ok...