EVALUATION OF WATER RETENTION CAPACITY OF GREEN ROOFS WITH APPLICATION OF GEOSYNTHETICS
Ecoroofs, Vegetated Roofs, Runoff, Stormwater attenuation.
Population growth of urban areas produce diverse environmental impacts, such as increase in the probability of flooding, heat island effect e pollution. The urbanization demands buildings, which leads to soil waterproofing. This increase in impervious surface area might turn great urban space into areas more susceptible to flooding when occurrence of intense rain. Therefore, the green roofs emerge in the worldwide scenario as an alternative to mitigate flooding. In addition to storm-water management, green roofs also offer other benefits (e.g. thermal benefits, noise reduction, aesthetic appeal, air pollution). Although usage of green roofs is considered an ancient technique, the green roofs studies increased by the 2000s. The performance of green roofs depends on constructive and environmental aspects. Therefore, the main objective of this study is to evaluate the water retention capacity of a green roof prototype with geosynthetics by means of simulated rain for climatic conditions of Natal, Rio Grande do Norte, Brasil. In this study, it is also expected to assess the performance of the green roofs in function of drought period, with admeasurement of moisture content antecedent rain simulation and in function of duration and intensity of the simulated rain.