With affordable and relief housing on the brain, researchers at USC developed an enormous 3D printer capable of creating housing structures in rapid time, via mashable:
Forget waiting weeks or months for your new home to be ready. Researchers from the University of Southern California created a 3D printer that can build a 2,500 square-foot house in 24 hours.
Since 2008, Professor Behrokh Khoshnevis has led a research team in the creation and development of a new layered fabrication technology using 3D printing called Contour Crafting. Instead of using thermoplastics, a common material used in 3D printing, the robot applies layer after layer of concrete to construct straight and curved walls, as well as domes.
The process involves a giant robot with a hanging nozzle and a flexible arm on a gantry-type crane — the whole rig is known as a “contour crafter” — above the foundation. The contour crafter then proceeds to layer concrete based on a computer-generated pattern. The layers eventually take shape into walls, embedded with all the necessary conduits and passages for electricity, plumbing and air conditioning