A structural system using a diagonal grid of steel or concrete members that provides both vertical support and lateral stability for tall buildings. This creates an efficient structural framework while eliminating the need for separate bracing systems.
Portmanteau of 'diagonal' and 'grid,' coined in the early 2000s as this structural system gained popularity in skyscraper design. The concept evolved from traditional braced frame structures but with the diagonal elements integrated into the building's skin.
Norman Foster's Hearst Tower in New York was one of the first major diagrid skyscrapers - its diamond-patterned steel structure creates a distinctive facade while using 20% less steel than conventional framing. The diagrid has become the go-to structure for twisting towers and unusual geometries that would be impossible with traditional post-and-beam construction.
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