The building negotiates its orientation with the urban fabric. The building is divided into three volumes, whose rotation is suggested by the geometry of the building plot. The volume of the ground floor adopts the geometry of the site. This floor establishes a continuing relationship with public space in which it is situated. The volume of first to fourth floors regains the address of the street l’Om, and creates, with the projection originated by this shift, a large porch that frames and protects the building entrance. The third volume of the fifth and sixth floors is guided by a turn in between the two previous volumes. The fact that this third volume is smaller than the lower one, generates a terrace accessible to the users of the building from the fifth floor. The need for natural light which is determined by the administrative use of the building is resolved with the large windows in facade which are protected from the incidence of direct solar radiation through a continuous envelope of aluminum slats. These slats give identity to the building facades: they are arranged horizontally along the main facades of the building (longitudinal facades) and in vertical on the beams. The use of a framed structure with pillars in facade allows for open floor plans that are organized from two vertical cores, leaving the rest of the surface free. The partitioning is done through lightweight partition wall. In this way, the building allows a versatility of occupation in time.