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The Dynamic Stormwater Reponse of a Green Roof

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dc.contributor.author Martin, Bruce
dc.date.accessioned 2009-03-03T16:17:22Z
dc.date.available 2009-03-03T16:17:22Z
dc.date.copyright 2008-11
dc.date.created 2008-10-02
dc.date.issued 2009-03-03T16:17:22Z
dc.identifier.uri http://hdl.handle.net/10214/1905
dc.description.abstract Impervious surfaces negatively affect urban hydrology by altering the depth, frequency and seasonal distribution of stormwater runoff. To assess the imperviousness of green roofs, a mathematical model was developed to simulate the stormwater response of a hypothetical green roof. The model is based on the physical processes that affect the green roof stormwater response and uses historic climate data. The results show that green roof imperviousness fluctuated according to climate conditions and precipitation sequence. Only 29% of the total precipitation received by the green roof resulted in runoff, however, the response varied substantially when evaluated at a daily interval. Runoff was eliminated during 82% of days with rain and a higher proportion of runoff disturbances were eliminated during the spring and summer compared to the fall. In comparison to an impervious surface, the green roof showed a reduction in the depth and frequency of runoff thereby improving urban hydrology. en_US
dc.language.iso en en_US
dc.subject impervious surface cover en_US
dc.subject stormwater management en_US
dc.subject urban hydrology en_US
dc.subject vegetated roofs en_US
dc.title The Dynamic Stormwater Reponse of a Green Roof en_US
dc.type Thesis en_US
dc.degree.programme Landscape Architecture en_US
dc.degree.name Master of Landscape Architecture en_US
dc.degree.department School of Environmental Design and Rural Development en_US
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