Babak Mohammadi - BSc Student of Architectural Professional Engineering, Faculty of Skills and Entrepreneurship, Tabriz Branch, Islamic Azad University, Tabriz, Iran
Bahareh Jodat - Graduated with a Continuous Bachelor's Degree in Architectural Engineering, Osweh Institute of Higher Education, Iran

The buildability in an energy-efficient (passive) design is crucial. Low-energy and passive household designs are getting ubiquitous. The target is to design sustainably urban quarters, and residential and social housings, which are led by climate protection and less energy consumption principles. These building principles get deeper with the years passing by. The new building materials define new architectonic forms, new building technologies, and ways of using them. The focus is also the up-build with ۳D printing technologies. Prefabricated ۳D building elements and ۳D layering on building sites is a fast building technology, which breaks through internationally. With ۳D printing applied in civil engineering, the building molds are obtained.

buildability, passive design, less energy consumption principles, ۳D layering on building sites.