Liu, C and Li, Y (2016) Measuring eco-roof mitigation on flash floods via GIS simulation. Built Environment Project and Asset Management, 6(4), pp. 415-427. ISSN 2044-124X
Abstract
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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | disaster risk reduction; numerical simulation; geographical information systems; green building; infrastructure management; floods; disaster planning; land use; green roof; mouse; critical infrastructure |
| Index terms: | green roof, methodology, mouse, planner, green building, disaster mitigation, stormwater, mitigation, urban planning, roof, critical infrastructure, rainwater, information system, disaster planning, disaster risk reduction, rainfall, natural disaster, infrastructure management, retention, flooding, land use, flash flood, numerical simulation |
| Subjects: | modelling and simulation, real estate economics, urban planning, profession, climate science, computer hardware, environmental hazards, information systems, environmental engineering, infrastructure and transport systems, research methods, management, design practice, financial risk, infrastructure engineering, sustainable design |
| Topics: | Engineering Principles, Research Practice, Cost Management, Governance, Sustainability, Roles and Professions, Human Resources, Urban Studies, Digital Applications, Design Practice |
| Descriptive scope: | 4 PCTA |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here