Bill Baker's strong but lightweight structural system allows architects to design supertall buildings without sacrificing floor space.
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Sears Tower The world's tallest for 25 years, this tower has a "bundled tube" structure that allows for maximum floor space — but only up to a certain height.
| Sears II (hypothetical) If architects wanted to supersize the Sears but keep the same structure, they'd have to fill it up with space-eating bundled tubes.
| Burj Dubai Baker's concrete buttressed core gives buildings a stable tripod-like stance. Narrow floors maximize both window access and usable space.
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ineer Bill Baker Is the King of Superstable 150-Story Structures</a>
