We have calculated that in one year, the occupants produce enough to supply a surface of façade like the one they occupy (panels of paper or compressed plastic bottles)
Reconditioning plants will be installed in the top of the building in the construction area, to minimise collection routes by heavy vehicles. At the foot of the tower, recuperation containers will be installed, for different material, such as glass. The building will be directly connected to different means of transport including the very close underground station, by a footbridge.
The building is pyramid-shaped, with an optimised structure, adapted to "classical" service by lifts. The pyramidal organisation of lifts generates spaces landings, lobbies that can receive activities, spaces for common services , like fitness-rooms, conference-rooms, restaurants or bars and, of course, on the summit , an observation platform.