1) Building term 2) Construction terminology 
[distributed computing network] DiaGrid is a large, multicampus distributed research computing network utilizing the Condor system and centered at Purdue University in West Lafayette, Indiana. In 2012, it included nearly 43,000 processors representing 301 teraflops of computing power. DiaGrid received a Campus Technology Innovators Award fr... Diagrid (a portmanteau of diagonal grid) is a design for constructing large buildings with steel that creates triangular structures with diagonal support beams. It requires less structural steel than a conventional steel frame. Hearst Tower in New York City, designed by Sir Norman Foster, reportedly uses 21 percent less steel than a standard desig...
Structure reinforcement technique using steel beams placed in diagonal grids.
A diagrid is a type of reinforcement technique using steel beams which uses, as the name suggests, diagonal grids. This helps reduce the total amount of steel used. 
The idea behind “diagrid” is pretty simple