Le contrôle de la production de la forme urbaine dans les zones tampons entre domaine d’application des PDAU et celui des PPSMVSS

Abstract

The theme of our research is around the issue of the preservation of the historic urban heritage, and its integration into the contemporary city. In our thesis, we asked ourselves about the tools and the methods of qualitative control of the production of urban form in the buffer zones around the historic sites inscribed on the World Heritage List, more precisely, in the case of the Algeria, in the area between the application of the PDAU / POS and that of the PPSMVSS, as well as the role of the concept of the buffer zone in this context, with the aim of safeguarding the continuity of the permanent values of the historic city. Through the case study of the Unesco site of the Kasbah of Algiers, we sought to verify our hypothesis that in the case of an urban historic site, the criteria for delimiting the buffer zone are usually based on the isolation and the criteria for setting aside the property should be put into perspective, in favor of more favorable criteria, the articulation of the old with the new, and which would allow the integration and insertion of the urban cultural property in the urban dynamics of the city. To verify this hypothesis, we used the following approach. First, we analyzed speeches about the preservation of classified historic sites. From which we have drawn up a critical assessment of the different approaches to interventions in this area. From there we studied the concept of a buffer zone developed by Unesco. In this context, the analysis of selected cases of studies, allowed us to affirm that the buffer zone as intermediate zone, between the historic center and the rest of the city, must, also, promote the stowage, and reconciliation between protection requirements and development imperatives. Also, the criteria for delimiting the buffer zone, should be based on criteria favoring more, the articulation of the old with the new. From then on, we proposed our methodological approach. This one is conceived as a synthesis of the three relevant approaches in the field of control of the intervention in historic urban environment. It enabled us to define a set of criteria allowing the delimitation of the perimeter of the buffer zone around the Unesco site, while taking care of all the requirements related to the physical and spatial integrity, to the perceptual integrity, and to the socio-economic integrity of the cultural site. The application of the buffer zone delimitation criteria listed above, to the safeguarded sector of the Kasbah of Algiers, enabled us to verify our approach methodology and our initial hypotheses, and to propose a delimitation of an area. buffer, previously nonexistent, for the Casbah site included the World Heritage list.