The paper will concerns the design choices agreed between the designers responsible for the structural consolidation and the implementation of safety of the wooden floors of the Ducal Palace in Sabbioneta near Mantova in Italy. The consolidation project and the implementation of safety has been carried out in full compliance with the structural design and materials of existing Renaissance structures with a focus on compatibility, durability, recognizability and reversibility of the process. For the characteristics of these floors and the work done in the design phases, please refer to the contributions of Augelli, Nicola, Petracco, Ronchi [1], to that of Mastropirro [2], to that of Augelli, Bordina, Migliavacca. [3]