The System
"A controlled set of integrated components designed to perform a specific function"
Diagrid structural systems are emerging as structurally efficient as well as architecturally significant assemblies for tall buildings and bridges. The diagrid is a series of interlocking steel structure that cross over to carry both gravity and lateral loads. This is due to their triangulated configuration. Figure S1 shows the basic components of a diagrid structural system.​ Because the load capacity of this type of stucture is very high, longer member spans allowing column-free floor plans are possible. In addition, the ability of the diagrid to carry environmental loads, specifically wind loads, reduces the need for internal columns. The redundancy of the system also prevents structures from progressive collapse in case of internal explosion or terrorist attacks. Due to the large concentrated loads, the foundation type used is typically pile foundation. The system is not only used for its structural stability, but also for its modern contemporary aesthetics. This site will give you a quick look at the system and how it is used around the world.
Figure S1: The Diagrid
The structural system of a building is a subsystem of the whole structure. Diagrid structures are also composed of many subsystems. Two main members are the diagonal elements and the nodes. These two members are dependent to each other as they are combined to form a triangulated pattern. A repeated pattern of nodes and diagonal members working together make up the external structure. In the interior of a diagrid building, a central core can be expected. This is where beams connect to the internal columns.