Measuring eco-roof mitigation on flash floods via GIS simulation

Liu, Chunlu and Li, Yan 2016, Measuring eco-roof mitigation on flash floods via GIS simulation, Built environment project and asset management, vol. 6, no. 4, pp. 415-427, doi: 10.1108/BEPAM-07-2015-0031.

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Title Measuring eco-roof mitigation on flash floods via GIS simulation
Author(s) Liu, ChunluORCID iD for Liu, Chunlu
Li, Yan
Journal name Built environment project and asset management
Volume number 6
Issue number 4
Start page 415
End page 427
Total pages 13
Publisher Emerald Group Publishing
Place of publication Bingley, Eng.
Publication date 2016
ISSN 2044-124X
Keyword(s) Disaster risk reduction
Numerical simulation
Geographical information systems (GISs)
Green building
Infrastructure management
Disaster planning
Land use
Green roof
Critical infrastructure
Summary Purpose: The rapid and ongoing expansion of urbanised impervious areas could lead to more frequent flood inundation in urban flood-prone regions. Nowadays, urban flood inundation induced by rainstorm is an expensive natural disaster in many countries. In order to reduce the flooding risk, eco-roof systems (or green roof systems) could be considered as an effective mechanism of mitigating flooding disasters through their rainwater retention capability. However, there is still a lack of examining the stormwater management tool. The purpose of this paper is to evaluate the effects on flooding disaster from extensive green roofs. Design/methodology/approach: Based on geographical information system (GIS) simulation, this research presents a frame of assessing eco-roof impacts on urban flash floods. The approach addresses both urban rainfall-runoff and underground hydrologic models for traditional impervious and green roofs. Deakin University’s Geelong Waurn Ponds campus is chosen as a study case. GIS technologies are then utilised to visualise and analyse the effects on flood inundation from surface properties of building roofs. Findings: The results reveal that the eco-roof systems generate varying degrees of mitigation of urban flood inundation with different return period storms. Originality/value: Although the eco-roof technology is considered as an effective stormwater management tool, it is not commonly adopted and examined in urban floods. This study will bring benefits to urban planners for raising awareness of hazard impacts and to construction technicians for considering disaster mitigation via roof technologies. The approach proposed here could be used for the disaster mitigation in future urban planning.
Language eng
DOI 10.1108/BEPAM-07-2015-0031
Field of Research 120201 Building Construction Management and Project Planning
Socio Economic Objective 970112 Expanding Knowledge in Built Environment and Design
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Emerald Group Publishing
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