The system designed for the courtyard of Palazzo Magnani is a light structure, the shape of which is optimised to completely enclose the space of the courtyard, in harmony with the existing rainwater drainage system, without altering the legibility of the ancient 16th-century space: a sort of lowered vaulting that rests on the existing structure, without exceeding the height of the neighbouring roofs. For the dimensional definition and calculation of the structure and supports, we used the consultancy of Studio Majowiecki, one of the most highly regarded in the international panorama for the realisation of structures of this kind. It is a 'single-layer' tensile structure calculated to support a load of 500 kg/sqm. The structure was designed to minimise aesthetic impact through the use of triangular-section steel profiles with a rounded apex at the bottom. The supports were designed so as to stress the old masonry with only compressive stresses, avoiding as much as possible the shelf effect and the resulting bending moment at the attachment point of the new structure. The fabric membrane is stretched by a perimeter 'bead', which is also triangular in cross-section, and is constrained to the structure by means of arches and purlins. The material used to make the membrane is a kind of highly resistant and durable 'plasticised canvas' with a special yarn inside.