TED has a video on a 3D building method.
The professor presenting this is an Industrial Engineer. Which could be the reason why I have talked about the concept of robotics to build data centers as well. Have you?
Behrokh Khoshnevis is a professor of Industrial & Systems Engineering and is the Director of Manufacturing Engineering Graduate Program at the University of Southern California (USC). He is active in CAD/CAM, robotics and mechatronics related related research projects that include the development of novel Solid Free Form, or Rapid Prototyping, processes (Contour Crafting and SIS), automated construction of civil structures, development of CAD/CAM systems for biomedical applications (e.g., restorative dentistry, rehabilitation engineering, haptics devices for medical applications), autonomous mobile and modular robots for assembly applications in space, and invention of technologies in the field of oil and gas. His research in simulation has aimed at creating intelligent simulation tools that can automatically perform many simulation functions that are conventionally performed by human analysts. His textbook, "Discrete Systems Simulation", and his simulation software EZSIM benefit from some aspects of his research in simulation. He routinely conducts lectures and seminars on invention and technology development.
He is a Fellow member of the Society for Computer Simulation and a Fellow member of the Institute of Industrial Engineering. He is a senior member of the Society of Manufacturing Engineers. His website: http://www-rcf.usc.edu/~khoshnev/