Who is credited with the innovative bundled tube construction used in the Willis Tower?

The innovative bundled tube construction method utilized in the Willis Tower, previously known as the Sears Tower, is attributed to Fazlur Khan. This engineering strategy allowed for greater height and structural stability by utilizing a system of tubes that are grouped together, allowing the building to effectively resist lateral forces, such as wind. This design was groundbreaking at the time and has influenced the construction of many skyscrapers subsequently built around the world.

Khan’s approach incorporated a blend of architectural and engineering principles, making it possible to construct taller buildings while improving efficiency and reducing the amount of materials needed compared to traditional construction methods. This innovation not only marked a significant advancement in high-rise design but also established Khan as a pivotal figure in the field of structural engineering. His contributions extended beyond just the Willis Tower, impacting future skyscraper designs with the bundled tube concept, which remains relevant in modern architecture.