De-Ville, S. and Stovin, V. (2014) Application of a Conceptual Hydrological Model to Identify the Impacts of Green Roof Substrate Ageing on Detention Performance. In: The University of Sheffield Engineering Symposium Conference Proceedings Vol. 1. USES 2014 - The University of Sheffield Engineering Symposium, 24 June 2014, The Octagon Centre, University of Sheffield.
Abstract
The substrate within a green roof is subject to numerous natural processes throughout its intended design life. As such there is a need to identify the impacts these processes have on substrate hydrological performance over time. Presented is a conceptual hydrological green roof model that utilises non-linear reservoir routing techniques to parameterise detention processes into scale, k and exponent, n. The value of n can be fixed as it largely influenced by the roofs construction (roof slope, drainage length, etc.), thus reducing the model to a single parameter, k. Using observed rainfall/runoff data from test beds at The University of Sheffield values of k were identified for a series of 25 events over a period of 4 years. A rise in the mean value of k was observed for each year of the study, indicating a reduction in detention performance. A design storm exercise allows for the changes in detention performance to be quantified in commonly reported detention metrics.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | Green Roof; Hydrology; Modelling; Substrate Ageing; Detention |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > USES (University of Sheffield Engineering Symposium) |
Depositing User: | Repository Officer |
Date Deposited: | 15 Apr 2015 13:41 |
Last Modified: | 21 Apr 2015 09:58 |
Status: | Published |
Identification Number: | 10.15445/01012014.29 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:85061 |