Planification urbaine et usages des quartiers précaires en Afrique : étude de cas à Douala et à Kigali

Since 2000, declarations issued in rapid succession by the international community have aimed at setting goals to drastically improve the living conditions of slum dwellers while, in the same time, the slums dwellers increased by 4,5% per year in Africa. Simultaneously, we have witnessed changes in the manner in which city residents perceive space: in today's city, the relationship between places and flows constitutes the new living space and sense of belonging (Castells, 1996). With the changes in the information society, space of flows are transformed into power flows, concentrated in space of flows which dominates more and more space of places, peripheriques areas where flows takes place everyday. Using this theory as grid, it is to re-examine the evolution of urbanization in African cities and their shantytowns. Indeed, this process of domination of the space of flows has implications for the planning approaches and uses of space of place in slums. This dual vision, putting power to the flows of space valued by the elites'cities of the living spaces of places experienced by people, is used to observe, name and understand the past and the future of cities. These elements have resulted in the formulation of a number of questions that have served as guidelines for this research. This research first targets the development of the urbanization process and the role of precarious neighborhoods: what measures are now being implemented by the authorities to reconcile the need to improve the competitiveness of African cities (advocated by donors) with the expectations of people in poor neighborhoods? In a second phase, the role of these neighborhoods' community areas is evaluated: are they a media to be valued and included in the projects to restructure the neighborhoods? Two assumptions have emerged from said questions. The first concerns the process of urbanization in African cities. This involves an analysis of the balance of power between the application of modernizing planning practices and the use of space by the residents of the neighborhoods. The second questions the role of community spaces as efficient public areas within the framework of projects to upgrade the neighborhood. The expected results of this thesis aim i) to understand the evolution of these precarious areas in the building of African cities, ii) to learn about the place and the role of community spaces and to learn from neighborhood upgrading projects. For this study, two cities were chosen: Douala (Cameroon's economic capital) and Kigali (Rwanda's political capital). For each, two methodological perspectives were adopted: the first is a comprehensive study of the entire city, based on plans, planning documents, interviews with local officials, archive documents; and the second is as a local study carried out in a market area of the city, based on observations, interviews, a questionnaire developed from a representative sample of traders, and a social and spatial analysis of the