*4.3.1 3D-Printed house*

Alquist 3D has printed the first-ever 3D-printed house in the US which was assembled in 22 hours. The printer head was connected to the tube through which the traditional concrete was being pumped. Alquist 3D has teamed up with the nonprofit organization known as "Habitat for Humanity" where they will be providing homes to the people in need. Alquist 3D has claimed that the 3D-printed houses are 10–15% less in cost compared to traditional house building. It has saved the manpower also as according to Alquist 3D, only 3–4 humans were required to operate the printer [29]. This was not the first time 3D-printed houses have been built. In France, 3D-printed houses were built and Europe's first 3D-printed house was built in 22 days which was later shortened to 3 days. In Dubai, there have been 3D-printed offices have been built. According to the Dubai government, it has saved them almost 50% of the total cost [30]. Initially, 3D printing was used only for prototyping the construction but now 3D printing has been used for constructing the whole buildings.

*New Industrial Sustainable Growth: 3D and 4D Printing DOI: http://dx.doi.org/10.5772/intechopen.104728*

**Figure 5.** *Airbus 3D printed bionic partition cabin [Source: Airbus].*
