Telhados verdes para habitações de interesse social: retenção das águas pluviais e conforto térmico.

• Autor(a) principal: Oliveira, Eric Watson Netto de
• Data de Publicação: 2009
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/11000
• topic: Environmental Engineering; green roof; water conservation; flood control actions; popular buildings and sustainable communities; social inclusion; income generation; Engenharia Ambiental; Telhados Verdes; Conservação da Água; Medidas de Controle de Enchentes; Habitações Populares e Comunidades Sustentáveis; Inclusão Social; Geração de Renda; CNPQ::ENGENHARIAS

The population growth and migration has increased the pressure on land use and urban occupation, increasing the problems of informal occupation (urban settlements) and environmental sanitation in large cities. This is even worse when urban floods occur. This project is part of a set of citizenship and social inclusion integrated actions in Jacarepaguá low-land hydrographic region, involving the Community of Vila Cascatinha, Vargem Grande, Rio de Janeiro, Brazil, in order to propose new public policies for informal settlements. This study is part of HIDROCIDADES project (CNPq / CTHIDRO / CTAGRO), which focus on water conservation in the urban and peri-urban environment associated to citizenship, social inclusion and life quality improvements in large cities. This project applied an adapted technology for green roofs on social interest buildings (fiber-cement tiles), in order to verify constructive aspects, possible crops to with income raising potential, costs, the effects on surface flow control and other benefits, such as buildings thermal comfort improving, microclimate. Results, demonstrated, among others, the establishment of a methodology for implementing green roofs for social interest buildings, costs and preliminary crops. In addition, the establishment of the green roof showed effects on controlling surface runoff. During the application of the irrigation system for rainfall simulation it was observed up to 56% retention of the total precipitation. It was observed a delay up to 8 minutes to runoff peak when comparing to the flow over tiles roof. It was verified the external thermal behavior, reducing the internal temperature range of typical days in summer (35.9 °C), being able to reduce internal temperature by 2.0 °C durin g warmer periods of the day and about 4.0 °C in the external environment, compared with the tiles roof, being efficient on the local microclimate modification.