The structure of the building consists of a light steel structure were the columns are placed 2 to 2.40 meters towards the interior space. In that way the end of the beams are free and and from them are hanged the facade of algae photobioreactors and and the circulation ramps with the bicing lines. Moreover, the algae facade consists a filter, between the interior and the exterior space and at the same time it is created a transitional space behind the photobioreactors that can be unified at will with the interior space. Section of the structural model Section detail of the structural model