Inside the Chicago Bean: Structural Blueprints Reveal Its Massive Scale
By Alexander Ross
Fabricating and erecting Cloud Gate demanded millimeter tolerances across dozens of industrial contractors, from Oakland, California, to downtown Chicago. The following breakdown shows the audited dimensional and structural metrics of the installation:
| Structural Component | Dimension / Specification | Functional Role |
|---|---|---|
| Overall Dimensions | 33 ft high × 42 ft wide × 66 ft long (10 m × 13 m × 20 m) | External volumetric footprint on AT&T Plaza |
| Total Assembled Weight | 110 US tons (approx. 99,800 kg) | Gross static dead load distributed across two foundation footings |
| Exterior Shell | 168 plates; 3/8-inch (9.5 mm) 316L stainless steel | Continuous polished mirror surface; non-load-bearing skin |
| Omphalos Clearance | 12 ft (3.7 m) central arch; 27 ft concave indentation | Underbelly walkway providing interactive acoustic and visual focus |
| Internal Frame Weight | Approx. 75 US tons of structural carbon steel | Trusses, rings, and rocker bearings supporting the exterior plates |
| Construction Timeline & Budget | 2004, 2006; $23 million (privately funded) | Extended timeline driven by on-site welding and hand polishing |
Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.
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