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Influence of Green Roofs on the Design of a Public Stormwater Drainage System: A Case Study

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Listed:
  • Flora Silva

    (ESTiG, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
    FibEnTech, 6201-001 Covilhã, Portugal
    GeoBioTec-UBI, 6201-001 Covilhã, Portugal)

  • Cristina Sousa Coutinho Calheiros

    (Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal)

  • Guilherme Valle

    (ESTiG, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
    Universidade Tecnológica Federal do Paraná, Campus Curitiba, Curitiba 80230-000, PR, Brazil)

  • Pedro Pinto

    (Câmara Municipal de Bragança, Forte S. João de Deus, 5300-263 Bragança, Portugal)

  • António Albuquerque

    (FibEnTech, 6201-001 Covilhã, Portugal
    GeoBioTec-UBI, 6201-001 Covilhã, Portugal
    Department of Civil Engineering and Architecture, University of Beira Interior, 6201-001 Covilhã, Portugal)

  • Ana Maria Antão-Geraldes

    (Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
    Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal)

Abstract

In the face of excessive soil sealing and the occurrence of heavy rainfall in short time periods leading to flooding, it is becoming increasingly urgent to implement public resilient stormwater drainage systems. Green roofs have several advantages at different levels, of which this paper highlights the ability to retain rainwater, to reduce problems with flooding in peaks of rainfall, and to increase in urban green infrastructure with all the benefits associated. In this sense, green roofs’ impact on the design of a public stormwater drainage system and their implications for urban stormwater management was analyzed when compared with conventional roofs. If green roofs are used on the buildings in the study urban area, which has about 2.1 ha and is located in rainfall region B of Portugal, then the weighted average runoff coefficient ( C m ) for the study area is 0.59. This scenario leads to a reduction in the maximum flow rate of 15.89% compared to the use of conventional roofs, with a C m of 0.70 for the same area. Thus, the use of green roofs instead of conventional roofs can have positive impacts on the surface runoff in urban areas and contribute to more sustainable urban drainage.

Suggested Citation

  • Flora Silva & Cristina Sousa Coutinho Calheiros & Guilherme Valle & Pedro Pinto & António Albuquerque & Ana Maria Antão-Geraldes, 2023. "Influence of Green Roofs on the Design of a Public Stormwater Drainage System: A Case Study," Sustainability, MDPI, vol. 15(7), pages 1-13, March.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:7:p:5762-:d:1107586
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    References listed on IDEAS

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    1. Ignacio Andrés-Doménech & Sara Perales-Momparler & Adrián Morales-Torres & Ignacio Escuder-Bueno, 2018. "Hydrological Performance of Green Roofs at Building and City Scales under Mediterranean Conditions," Sustainability, MDPI, vol. 10(9), pages 1-15, August.
    2. Musa Akther & Jianxun He & Angus Chu & Jian Huang & Bert Van Duin, 2018. "A Review of Green Roof Applications for Managing Urban Stormwater in Different Climatic Zones," Sustainability, MDPI, vol. 10(8), pages 1-28, August.
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    4. Maria Luíza Santos & Cristina Matos Silva & Filipa Ferreira & José Saldanha Matos, 2023. "Hydrological Analysis of Green Roofs Performance under a Mediterranean Climate: A Case Study in Lisbon, Portugal," Sustainability, MDPI, vol. 15(2), pages 1-18, January.
    5. Fernando Barriuso & Beatriz Urbano, 2021. "Green Roofs and Walls Design Intended to Mitigate Climate Change in Urban Areas across All Continents," Sustainability, MDPI, vol. 13(4), pages 1-14, February.
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