A diagrid (a portmanteau of diagonal grid) is a framework of diagonally intersecting metal, concrete or wooden beams that is used in the construction of buildings and roofs. It requires less structural steel than a conventional steel frame. Hearst Tower in New York City, designed by Norman Foster, uses 21 percent less steel than a standard design. The diagrid obviates the need for columns and can be used to make large column-free expanses of roofing.Another iconic building designed by Foster, 30

This is the diagrid structure for the southern portal of the West Gate Tunnel. This web-like diagrid is for the metal cladding. Drivers travelling in the outbound tunnel will exit here at South Kingsville. After emerging from the tunnel exit, drivers can have the option of getting to the western suburbs, or to Geelong and Ballarat. | West Gate Tunnel Project

The California Science Center is getting ready to top out the diagrid structure of the future Samuel Oschin Air and Space Center—but what exactly is a diagrid? 🤔 🏙️Learn about the design of this iconic new landmark that will inspire future generations of scientists and engineers (maybe even structural engineers!) throughout Los Angeles and beyond. | California Science Center