Mario Rinke, born in 1979, engineering study at the Bauhaus-Universitat in Weimar. In 2007 he worked in the London engineering office of Ramboll Whitbybird, before moving to the ETH in 2008 to the chair of structural design. Joseph Schwartz, born in 1957, received his master's degree in 1981 and his doctorate in 1989 in the Department for Civil engineering at the ETH in Zurich. Prof. Schwartz runs his own engineering office with headquarters in Zug and works closely with several leading Swiss architects. He is a member of the board of the professional group for bridge building and structural engineering and president of the Masonry Commission SIA 266.