Banca de DEFESA: KETLEN CRISTIANY BRITO DE SOUZA

PROPOSAL FOR IMPLEMENTING SUSTAINABLE DRAINAGE IN MEETING URBAN CRITERIA

Sustainable drainage. Water resources management. Urban drainage of Boa Vista - RR. Neighborhood Jardim Carana.

The city of Boa Vista, in the state of Roraima, has undergone an intense process of urbanization and its urban fabric has a conventional drainage system. This urbanization, among which the construction of buildings, paving, soil waterproofing and current drainage systems stand out, unbalance the natural environment and drastically change the urban water dynamics. As of 2006, several municipalities created their Master Plans for Urban Drainage. However, until then, the municipality did not adapt. In this sense, this research proposes to show the current urban situation of the area under study, with regard to its physical-territorial aspects, seeking, among the existing alternatives, the types of sustainable drainage suitable for the urban watershed of Boa Vista. Vista/RR, having urban, social, economic and environmental factors as premises for choosing, in the end, preparing a proposal for alternative sustainable drainage techniques for residents of the Jardim Caranã neighborhood, meeting the urban standards of the municipality. For this, it was necessary to carry out field tests to collect data and verify the percolation of water in the soil, and with the most satisfactory results obtained, make use of the sustainability concepts of the Sustainable Drainage Systems considered more adequate to the local reality. After carrying out the characterization of the urban situation and the physical-co-territorial aspects of the neighborhood, the total green area (IAVT) and vegetation cover (ICV) indices were obtained, the impacts on the floodplain found in loco, a survey of soil waterproofing data and the calculation of sustainable rain garden and infiltration trench drainage techniques. As a result, for urban issues, a suboptimal IAVT was found, different from the ICV, which was considered above. As for waterproofing, the neighborhood was considered very permeable, when the rates of permeability and occupation of the lot were surveyed. An infiltration test was carried out in the neighborhood, and later, the rain garden and infiltration trench techniques were calculated, demonstrated through a technical project and the calculations confirmed that the infiltration trench is more efficient, as it manages to store a greater volume of water. However, the two techniques were considered good for the area under study, being able to cooperate a lot in solving the problem of these waters that flow superficially inside the lot.