This thesis is based on a hypothesis that attributes to infrastructure a progressive importance in the structuring and qualification of increasingly interactive urban spaces, in that it is infrastructure that constitutes the physical structure and urban and metropolitan functions of greatest permanency.The first part of the thesis evaluates small-scale infrastructure constituted by the capillary sections of urban networks, such as minor thoroughfares, streets, squares and other smaller elements that provide the environment for public interaction through their physical structure and their symbolic importance at the local level.The second part deals with elements of larger-scale infrastructure that provide the main flows of metropolitan life, which, while fulfilling articulating functions over greater distances, are generally in conflict with the local urban spaces through which they pass and for which they represent destructuring force.The thesis argues that elements of larger-scale infrastructure, when they become the subject of urban concern and incorporate criteria beyond the purely functional or of specific concern to their respective systems, may acquire conditions similar to those of smaller-scale infrastructure, establishing an intense relationship with their surroundings.In this sense, they may perform a significant role in the definition of the urban spaces around them and contribute to the Foto inserção da maquete do projeto de reurbanização da Favela de Paraisópolis.(fonte Vigliecca Associados)