Desempenho hidrológico de telhado verde extensivo

• Autor(a) principal: Sakagami, Tatiana Akemi [UNESP]
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/155135; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-03-07/000879228.pdf
• topic: Drenagem; Telhados; Chuvas; Metodos de simulação; Escoamento

Inadequate water management, especially in large urban centers, leads to well-known and recurring socio-environmental problems. In this context, sustainable urban drainage systems have been found to be a good alternative to the conventional systems, and among them are green roofs. This work aims to evaluate, in hydrological terms, the performance of an extensive, by means of prototypes constituted by different substrates and by rainfall simulation, whose intensities were of 52 mm/h and 127 mm/h. Two test batteries were carried out, with rainfall durations of 5, 15, 30 and 60 minutes for each intensity obtained and interval of six days between rains. Good performance was observed in all three modules, especially for faster and more intense rainfall, with storage of all incoming water volumes. Even for the other situations, it was obtained a satisfactory performance of the modules, since there was no surface runoff, only subsurface, with observed delay time. For example, for a 15-minutes rainfall of 127 mm/h, a reduction of 7,2 liters/m² was estimated when comparing TV2 with a conventional roof; while TV3 obtained 100% storage of the precipitated volume. These results corroborate the prospect that there is a potential to be explored with this system