Proposta de implantação de telhado verde para captação e uso de águas pluviais em área de relevância ambiental: Ilha Grande/RJ.

Abstract

In order to minimize the impacts of human actions on the environment, specifically on water resources, it is essential to search for alternative sources to meet the growing demand of water for various purposes. Initiatives such as water reuse, uptake and utilization of rainwater are critical in the attempt to find models for sustainable water resource management. This work presents thorough research on how the use of green roofs can contribute to the rational use of water and to reduce flood occurrences. The area of study in question was Ilha Grande, located on the southern coast of the State of Rio de Janeiro, a Permanent Preservation Area which, among other Nature Conservation areas, is home to the Ilha Grande State Park. To assess the feasibility of implementing a green roof in the region, specifically in Vila Dois Rios (23o11'S, 44o12'W), we analyzed the historical rainfall record for the last decade in the region. Plant species suitable for use in green roof were found on the island. Additionally, relevant constructive and operational assumptions were identified. To raise awareness among visitors and locals, an illustrative informative booklet was prepared. Finally, it was concluded that it is viable to implement a green roof to capture and use rainwater on Ilha Grande.