The operations presented here illustrate techniques of consolidation designed to bring the geometric configurations of the structures back to their initial condition in order to restore, albeit with certain necessary technological insertions, their original static conception. In the Church of S. Tommaso in Terni the verticalness of a wall which had rotated several centimeters was restored; in the case of the Odeo Cornaro in Padua, once the geometrical lay of the structure was restored, it was proposed to transfer the stresses to a metal structure inserted inside the masonry. In the Monastery of San Pietro in Perugia, the technique making it possible to raise a 25 x 12b meter vault more than 40 cm. was illustrated.