Toshifumi Imagawa, Hidekazu Zui, Yusuke Tanaka, Yuichiro Mizuno, Takeshi Aoi, Shin Kawano (NIKKEN SEKKEI LTD)

This project represented a challenge to create Japan’s first “zero-water” building through “water reuse” and “rainwater site infiltration” cycles to reduce environmental impacts. In all, the facility comprises two buildings with two respective functions: a training plant with water treatment equipment, and a research and development (R&D) workplace from which water treatment initiatives are communicated to the community. Metal pipes were used for the exterior to create an aesthetically soft, watery appearance, while providing solar protection as well as ventilation, drainpipes, and other functions.