Phase B’: The 2^nd phase of the works includes the structural appraisal of the building, the structural upgrade and retrofit, as well as the structural appraisal of the roof trusses and the design of a new roof using space frames. The current structural system is formed by reinforced concrete elements (columns, beams and slabs), and stone masonry walls. The proposed upgrade measures include the addition of new reinforced concrete shear walls, concrete jackets on walls and beams, and reconstruction of inadequate beams and columns. The stone masonry walls are reinforced by using hydraulic calcium grout injections and the addition of a layer of concrete 150mm thick externally to increase the capacity in order to be able to carry the loads of the new roof. The pad foundations are upgraded and new pads are added.