The Oporto Blood Bank was built to support all activities of regional blood collection and analysis. Continuous scientific and technological developments force permanent alterations. It is therefore a building with an unstable interior, wich will undergo frequent metamorphosis throughout its life. The building program is a linear sequential process. It suggests to be more adequate a low and fluid construction.

The building is shaped upon an irregular polygon in the heart of a city block, communicating with the street in two different roads.

The environment is chaotic, built from backyards.
The building-as-line runs through the polygon as different directions searching its geometry. Along its apparent motion, it comes to stability as different segments of variable conditions. The extremities touch the streets gently: on one the building is lifted, announcing the main entrance’s obvious permeability; on the other, it becomes a technical arch cutting through the renovated granite wall of the old farm. Inside the plot, the views towards the surroundings are cut out through long and narrow windows, transforming the chaotic environment into abstract views out of context.