Contour Crafting, cement-jet printing of buildings, has been studied for use on the moon. Contour Crafting is the only layered fabrication technology which is suitable for large scale fabrication. CC is also capable of using a variety of materials with large aggregates and additives such as reinforcement fibre. Due to its speed and its ability to use in-situ materials, Contour Crafting has the potential for immediate application in low income housing and emergency shelter construction. One of the ultimate goals of humans is building habitats on other planets for long term occupancy. The CC approach has direct application to extraterrestrial construction. A NASA supported project was aimed at studying the applicability of CC for Lunar construction (Khoshnevis et al., 2005). The development path is to first make single household houses, then multi-unit apartments and offices and then whole communities and towns.
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