Stormwater Mitigation for Selected Practices at Construction Site
| Autor: | Hao-Che Wu, 吳豪哲 |
|---|---|
| Rok vydání: | 2011 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 99 Green spaces have been replaced by impervious surface at urbanized areas in recent years. This change causes the construction site losing capacity of water conservation. Therefore, even small to medium precipitation events have brought about serious flood damage. However, improvement of storm water sewer system is difficult because of many reasons. In order to address urban flood issue, experience of storm water management alternative for green roof will be addressed and discussed. This study attempts to present an approach to assess runoff mitigation by using the green roof and natural drainage strategies. Parameters derived from experiments of green roof researches in rainfall-runoff are used to build up a runoff modeling methodology. This method is based on Curve Number method established by U.S. Soil Conservation Service. In this study, there are four drainage scenarios, devised by consists of green roof and natural drainage strategies, to simulate three selected building coverage ratios (BCR) with assumed construction area. The results indicate that all cases have the significant effects on reducing the rainfall runoff when green roof and natural drainage are used. Among which, in the high BCR case, green roof will have the particularly significant effects in runoff reduction. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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