Análise da utilização de reservatórios de contenção de cheias em edificações e o seu impacto no sistema de drenagem urbana

Abstract

Bearing in mind the strong impacts caused by rainfall in urban areas and the need for proper management of stormwater, it is necessary to approach the management measures for urban drainage to avoid many losses from runoff, such as floods, that affected many Brazilian cities. The drainage in Brazil is lagged when it's compared with modern solutions adopted by the developed countries, because the concept of plumbing is more used than reservation and infiltration, sustainable measures. In this case, the fast flowing is more prioritized than controlled disposal volumes reserved. This research presents a comparison of the environmental and economic impacts for two different situations sizing of drainage systems in the city of Curitiba-PR, which has the Municipal Decree Number 176/2007, responsible for the criteria for implementation of mechanisms to contain floods. For the same actual area of study adopted, consisting of residential lots, streets, sidewalks, woods and lawns, are evaluated the use or not of tanks for flood containment in the buildings, confronting concepts related to plumbing and reservation and indicating the different premises to be adopted for each one of the systems. From the measurement of peak flow reduction with the use of tanks in residential lots and cost analysis for the implementation of both drainage systems cited, as a result brings the importance and financial viability of the use of control measures at source and suggests the use of tanks to contain floods in other Brazilian cities.