We were invited, as winners of International Concrete Design Competition,to take part to a masterclass at the Bauhaus of Dessau.It was no coincidence the event take place in the same year the institution celebrated its eightieth anniversary.43 Winners from eight countries were invited to design and discuss their contribution to concrete design.Our assignnment was to redesign Toyo Ito’s Mediateque in concrete, whilst maintaining it’s unique spatial qualities.This led us beyond a pure technical, structural investigation, into analyzing the buildings spatial and programmatic properties.Our goal was to break with the orthogonal system by introducing the diagonal. The result of our investigation is a complex architecture of continuity and variations held together by a sistematic approach. The separation of structure and design is dissolved.