Shiraz and Kashan. Substrate and Urban form knots, road and band of pertinence for the Morphological Analysis

Two doctoral theses, two Iranian cities, have been the subject of research work target to the renovation project of the building fabric. In one case it was a matter of understanding if it is how the school building can perform a specializing function in the building fabric (Strappa G. 2016) , in the other instead focused the attention on the theme of residential regeneration in the tectonic and compositional tradition. This paper presents the synthesis of the regressive and stratigraphic reading of the historical fabric of the two cities. The work refi nes the concept of “restructuring road”, focused by Caniggia, used to read the shape of the city. (Caniggia G., 1984; Carlotti P., 2018). The applied method is to identify, on digitized aerial photography cartography of Cadastre, the role and meaning of the forms present in the map; identifying from time to time nodes and axes that belong the city to have an organic system of relationships (Sauer C. O., 1925). Then subtracted from the cadastral draw, it allows to identify prior substrates organized with systems and structures linked to other different logics and economies. The overlapping of different urban layers has made it possible to highlight relationships and rules that presided over the different phases of the transformation process of the building fabric, which today can prove useful for the architectural and urban regeneration project.