| Artist | Anish Kapoor |
|---|---|
| Year | Built 2004–2006 |
| Type | Stainless steel |
| Dimensions | 10 m × 13 m × 20 m (33 ft × 42 ft × 66 ft) |
| Location | Millennium Park, Chicago, Illinois, United States |
One of his more famous works, Cloud Gate, was originally proposed at 6 million dollars for AT&T Millennium Plaza, but ended up costing over 23 million!
When Cloud Gate's interior components were completed, construction crews prepared to work on the outer shell; this comprises 168 stainless steel panels, each 3⁄8 inches (10 mm) thick and weighing 1,000 to 2,000 pounds (450 to 910 kg).[30] They were fabricated using three-dimensional modeling software.[24] Computers and robots were essential in the bending and shaping of the plates,[25] which was performed by English wheel and a robotic scanning device.[31] Metal stiffeners were welded to each panel's interior face to provide a small degree of rigidity. About a third of the plates, along with the entire interior structure, were fabricated in Oakland.[24] The plates were polished to 98 percent of their final state and covered with protective white film before being sent to Chicago via trucks.[32] Once in Chicago, the plates were welded together on-site, creating 2,442 linear feet (744 m) of welded seams.[30] Welders used keyhole welding machines rather than traditional welding guns.[7] The plates were fabricated so precisely that no on-site cutting or filing was necessary when lifting and fitting them into position.[30]
Cloud Gate
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