Dimensionamento de bacias de detenção de águas pluviais em condomínio urbano

Abstract

Urban growth significantly affects the dynamics of the environment, as the sealed area is directly proportional to the expansion of cities. Reducing soil permeability leads to increased frequency and intensity of flood events, as well as increasing runoff velocity leading to problems ranging from population disturbance and possible damage to public and private heritage to erosion and sedimentation riverbed. Due to the impacts caused by precipitation in urban areas, flood containment mechanisms aimed at greater control of the volume of rainwater become essential. The present work aims the sizing of a rainwater detention reservoir in the city of Goiânia (GO) through various methods: Rational, Rainfall, Decree 176/2007, Aron Kibler and SCS (Soil Conservation Service). It was found that the proposals presented quite different results and that the device would have a lower effective cost than a traditional drainage system, with manholes, aiming at the damping of the same volume. In addition, it was observed that for this area of study the most recommended proposal would be the Rational Method.