Hydrological efficiency of green roofs for residential neighborhoods scale

Detalhes bibliográficos
Autor(a) principal: Alamy Filho, José Eduardo
Data de Publicação: 2016
Outros Autores: Barcelos e Manna, Igor Brito Costa, Melo, Nágela Aparecida de, Caixeta, Ana Clara Mendes
Tipo de documento: Artigo
Idioma: por
Título da fonte: Sociedade & natureza (Online)
Texto Completo: https://seer.ufu.br/index.php/sociedadenatureza/article/view/28740
Resumo: The purpose of this paper is to estimate the behavior of a set of green roofs in relation to its ability to inhibit runoff, using the spatial scale of residential neighborhoods. The hydrological efficiency of green roofs was evaluated based on the relative reduction of runoff volume, comparing the situation of implementation of permeable coverage, in all buildings, with the situation with impermeable roof. A hydrologic model was applied, with various scenarios of precipitation. This effect was introduced by rainfall equation and synthetic temporal distributions. Types and land uses were considered from the curve number parameter. The proposed methodology was applied to a residential condominium located in the city of Uberlândia, Minas Gerais. The results indicate that the implementation of green roofs points to significant reductions in the volume of runoff. In this context, it is estimated efficiencies between 2.02% and 55.67%. For initially dry soil conditions, which are common after drought, an average hydrological efficiency of 40.35% was expected. However, this ratio is reduced to 10.44%, in situations of imminent saturation, previous successive rainfall events. Despite its dependence on antecedent soil moisture, this reduction of runoff is considerable. Thus, the implementation of green roofs helps to mitigate peak flows generated at the output of neighborhood, relieving the public drainage system and, in a broader context, reducing the risk of flooding in the valley bottoms.
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spelling Hydrological efficiency of green roofs for residential neighborhoods scaleEficiência hidrológica de telhados verdes para a escala de loteamentos residenciaisDrenagem urbanaTelhados verdesEscoamento superficialUrban drainagegreen roofsrunoffThe purpose of this paper is to estimate the behavior of a set of green roofs in relation to its ability to inhibit runoff, using the spatial scale of residential neighborhoods. The hydrological efficiency of green roofs was evaluated based on the relative reduction of runoff volume, comparing the situation of implementation of permeable coverage, in all buildings, with the situation with impermeable roof. A hydrologic model was applied, with various scenarios of precipitation. This effect was introduced by rainfall equation and synthetic temporal distributions. Types and land uses were considered from the curve number parameter. The proposed methodology was applied to a residential condominium located in the city of Uberlândia, Minas Gerais. The results indicate that the implementation of green roofs points to significant reductions in the volume of runoff. In this context, it is estimated efficiencies between 2.02% and 55.67%. For initially dry soil conditions, which are common after drought, an average hydrological efficiency of 40.35% was expected. However, this ratio is reduced to 10.44%, in situations of imminent saturation, previous successive rainfall events. Despite its dependence on antecedent soil moisture, this reduction of runoff is considerable. Thus, the implementation of green roofs helps to mitigate peak flows generated at the output of neighborhood, relieving the public drainage system and, in a broader context, reducing the risk of flooding in the valley bottoms.O presente trabalho teve o objetivo de estimar o comportamento de um conjunto de telhados verdes em relação à sua capacidade de inibição do escoamento superficial, utilizando a escala espacial de loteamento. A eficiência hidrológica dos telhados verdes foi avaliada em função da redução relativa do volume de escoamento superficial, comparando a situação de implantação da cobertura permeável, em todas as edificações de um loteamento, com a situação de telhado convencional impermeável. As estimativas teóricas utilizaram um modelo hidrológico, com imposição de diversos cenários de precipitação. O efeito das chuvas foi introduzido pela equação de intensidade, duração e frequência local e por distribuições temporais sintéticas. Os tipos e usos do solo foram considerados a partir do parâmetro curva-número. A metodologia proposta foi aplicada para um condomínio residencial situado na cidade de Uberlândia, Minas Gerais. Os resultados das simulações hidrológicas indicaram que a implantação de telhados verdes aponta para reduções expressivas do volume de escoamento superficial. Neste contexto, estimaram-se eficiências entre 2,02% e 55,67%. Para condições de solo inicialmente seco, que são comuns após estiagens, foi prevista uma eficiência hidrológica média de 40,35%. A despeito disto, este índice reduz-se para 10,44% em situações de saturação iminente, decorrentes de chuvas anteriores sucessivas. A despeito da sua dependência da umidade antecedente do solo, este potencial de redução do escoamento superficial é considerável. Assim, a implantação de telhados verdes contribui para atenuar as vazões de pico geradas na saída do loteamento, aliviando o sistema público de drenagem e, num contexto mais amplo, reduzindo os riscos de enchentes ribeirinhas nos fundos de vale. Palavras-chave: drenagem urbana, telhados verdes, escoamento superficial.Universidade Federal de Uberlândia2016-11-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/sociedadenatureza/article/view/28740Sociedade & Natureza; Vol. 28 No. 2 (2016)Sociedade & Natureza; v. 28 n. 2 (2016)1982-45130103-1570reponame:Sociedade & natureza (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUporhttps://seer.ufu.br/index.php/sociedadenatureza/article/view/28740/pdfAlamy Filho, José EduardoBarcelos e Manna, Igor Brito CostaMelo, Nágela Aparecida deCaixeta, Ana Clara Mendesinfo:eu-repo/semantics/openAccess2021-04-30T14:00:57Zoai:ojs.www.seer.ufu.br:article/28740Revistahttp://www.sociedadenatureza.ig.ufu.br/PUBhttps://seer.ufu.br/index.php/sociedadenatureza/oai||sociedade.natureza.ufu@gmail.com|| lucianamelo@ufu.br1982-45130103-1570opendoar:2021-04-30T14:00:57Sociedade & natureza (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Hydrological efficiency of green roofs for residential neighborhoods scale
Eficiência hidrológica de telhados verdes para a escala de loteamentos residenciais
title Hydrological efficiency of green roofs for residential neighborhoods scale
spellingShingle Hydrological efficiency of green roofs for residential neighborhoods scale
Alamy Filho, José Eduardo
Drenagem urbana
Telhados verdes
Escoamento superficial
Urban drainage
green roofs
runoff
title_short Hydrological efficiency of green roofs for residential neighborhoods scale
title_full Hydrological efficiency of green roofs for residential neighborhoods scale
title_fullStr Hydrological efficiency of green roofs for residential neighborhoods scale
title_full_unstemmed Hydrological efficiency of green roofs for residential neighborhoods scale
title_sort Hydrological efficiency of green roofs for residential neighborhoods scale
author Alamy Filho, José Eduardo
author_facet Alamy Filho, José Eduardo
Barcelos e Manna, Igor Brito Costa
Melo, Nágela Aparecida de
Caixeta, Ana Clara Mendes
author_role author
author2 Barcelos e Manna, Igor Brito Costa
Melo, Nágela Aparecida de
Caixeta, Ana Clara Mendes
author2_role author
author
author
dc.contributor.author.fl_str_mv Alamy Filho, José Eduardo
Barcelos e Manna, Igor Brito Costa
Melo, Nágela Aparecida de
Caixeta, Ana Clara Mendes
dc.subject.por.fl_str_mv Drenagem urbana
Telhados verdes
Escoamento superficial
Urban drainage
green roofs
runoff
topic Drenagem urbana
Telhados verdes
Escoamento superficial
Urban drainage
green roofs
runoff
description The purpose of this paper is to estimate the behavior of a set of green roofs in relation to its ability to inhibit runoff, using the spatial scale of residential neighborhoods. The hydrological efficiency of green roofs was evaluated based on the relative reduction of runoff volume, comparing the situation of implementation of permeable coverage, in all buildings, with the situation with impermeable roof. A hydrologic model was applied, with various scenarios of precipitation. This effect was introduced by rainfall equation and synthetic temporal distributions. Types and land uses were considered from the curve number parameter. The proposed methodology was applied to a residential condominium located in the city of Uberlândia, Minas Gerais. The results indicate that the implementation of green roofs points to significant reductions in the volume of runoff. In this context, it is estimated efficiencies between 2.02% and 55.67%. For initially dry soil conditions, which are common after drought, an average hydrological efficiency of 40.35% was expected. However, this ratio is reduced to 10.44%, in situations of imminent saturation, previous successive rainfall events. Despite its dependence on antecedent soil moisture, this reduction of runoff is considerable. Thus, the implementation of green roofs helps to mitigate peak flows generated at the output of neighborhood, relieving the public drainage system and, in a broader context, reducing the risk of flooding in the valley bottoms.
publishDate 2016
dc.date.none.fl_str_mv 2016-11-09
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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url https://seer.ufu.br/index.php/sociedadenatureza/article/view/28740
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/sociedadenatureza/article/view/28740/pdf
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Uberlândia
publisher.none.fl_str_mv Universidade Federal de Uberlândia
dc.source.none.fl_str_mv Sociedade & Natureza; Vol. 28 No. 2 (2016)
Sociedade & Natureza; v. 28 n. 2 (2016)
1982-4513
0103-1570
reponame:Sociedade & natureza (Online)
instname:Universidade Federal de Uberlândia (UFU)
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instname_str Universidade Federal de Uberlândia (UFU)
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reponame_str Sociedade & natureza (Online)
collection Sociedade & natureza (Online)
repository.name.fl_str_mv Sociedade & natureza (Online) - Universidade Federal de Uberlândia (UFU)
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