Uso de microbacia de detenção em um empreendimento na cidade de Campina Grande - PB.

Abstract

The growth of a country’s urban population brings with it a series of problems that are the result of a lack of planning during the growth of cities. Among the consequences arising from this process, we can mention the increase of the waterproofed area which increases the drained volume and with it the chance of flooding. As an attempt to mitigate these problems, urban drainage systems have been implemented in cities. These systems, when not maintained or non- existent, also contribute to flooding. Campina Grande (PB), a medium-sized city, often suffers with flooding due to problems in its drainage systems. One of the alternatives to mitigate this problem, is the construction of micro detention reservoirs in large buildings. Therefore, the objective of this work is to ascertain the feasibility of use this type of structure within buildings. This approach was tested in a vertical building, whose drainage area is 7760.5 m². For the sizing of the reservoir, among the existing methods, Tsuchyia method was used, which provided a holding volume of 91 m³, greater than the available for execution. However, with the bottom discharge and the spillways that were dimensioned working together, there will not be overload on the urban drainage structures or in the reservoir. Allowing that the entire runoff volume that flow through the drainage area be managed in a such way that the drainage elements operate inside their limits, reducing the risk of flooding .