Drenagem urbana – estudo de caso do Residencial Itamaracá

Abstract

After heavy rains, it is common to see reports about flooding, floods and heavy rains in large urban centers, places where there are infrastructures that, theoretically, should withstand this type of event. As an example in this situation, there is the district Residencial Itamaracá, in Goiânia-GO, which is the object of study of this work, in order to analyze the rainwater drainage system and complement the studies published on this system, among them Falcão (2021). In this sense, this study sought to characterize the network of storm sewers, in particular on the dimensioning and efficiency in terms of surface flow loads. Using bibliographic research and visits to the study site, the characterization of the study area and the elements of the drainage system were carried out. And based on the hydraulic design manual for urban drainage systems by Ulysses m. an. of Alcântara, the efficiency of the manholes of the residential gallery networks was used, and using the calculation method presented in the Highway Drainage manual, (DNIT 2006) the manholes were also used. The analysis of the obtained results indicated that there is inefficiency of the installed drainage system. The failure at the site indicated that there is a lack of maintenance of the surface drainage system, or that it intensifies damage to the existing surface catchment system.