Mind boggling!
The video features University of Southern California engineering professor, Behrokh Khoshnevis, who shows how houses can be built with a large scale 3D printer in only 20 hours. He calls it Contour Crafting. He also talks about the numerous benefits of using this technique beyond just the cost savings for the construction business. There are many social benefits also. The walls that are created are structurally more sound than conventional walls, there are less CO2 emissions generated, less waste,less inefficiency, reduction of construction accidents, and elimination of slums. He believes that the 3D construction industry can create more jobs, offsetting building jobs that would be eliminated. 3D houses can even be all different in a neighborhood, avoiding the tract housing look, by just making a choice in the software.
http://www.youtube.com/watch?v=JdbJP8Gxqog
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