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Evaluation of green roof hydrological performance in a Malaysian context

Kasmin, Hartini and Stovin, Virginia and De-Ville, Simon (2014) Evaluation of green roof hydrological performance in a Malaysian context. In: 13th International Conference on Urban Drainage (ICUD 2014), 7 - 12 September 2014, Borneo Convention Centre Kuching (BCCK), Sarawak, Malaysian Borneo.


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Using a conceptual hydrological green roof model developed in Sheffield, UK, this article explores the potential hydrological performance characteristics of a green roof in Malaysia. The conceptual rainfallrunoff model was created from data collected on an extensive green roof test bed outfitted with a commercial green roof system. The model related the roof’s performance to the hydrological processes, the roof’s physical characteristics and the local climatic conditions. The developed model used both hydrological flux modelling and reservoir routing techniques to evaluate the performance of rainfall retention (volumetric control) and detention (temporal delay), respectively (Stovin et al., 2013; Vesuviano et al., 2014). Utilising the generic conceptual model, data from Batu Pahat, Malaysia was used to predict retention. The same physical configuration of the Sheffield test bed was assumed. An 11-year rainfall record was used to explore the likely effectiveness of a similarly configured green roof in a Malaysian environment, both on an annual basis and in response to specific storm events. The simulation results indicated a similarly configured roof in a Malaysian climate could reduce runoff by 84% on a per-event basis and achieved a 51% overall volumetric retention. This was comparable to UK findings despite the disparities in climate

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: evapotranspiration; green roof; stormwater management; retention; Malaysia
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering
Divisions: Faculty of Civil and Environmental Engineering > Department of Water and Environmental Engineering
Depositing User: Mrs. Nurhayati Ali
Date Deposited: 17 Mar 2015 08:11
Last Modified: 17 Mar 2015 08:11
URI: http://eprints.uthm.edu.my/id/eprint/6708
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