The building structure is made up of large transverse frames at factory body and coupled to 2.4m, equal to two modules, with lateral overhangs of 3,6m. The main distance of 7.8m is equal to six modules. The expansion joints are located in the axis of the pillars pairs, each 19,2m. The pillars supporting pairs of longitudinal beams on the blade, on which it bases three platforms (planes) of different extension. In the various floors plants it is bounded only the surface of the corridors and lobbies.