Hydrologic modelling for green roof systems

Rapid development and increasing population has posed urban storm water management issues to the society. Green roof system is introduced to modern development as a method to mitigate these issues. The focus of this project is to come out with a reliable modelling system for green roof. An experime...

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Main Author: Law, Kar Mun
Other Authors: School of Civil and Environmental Engineering
Format: Final Year Project
Language:English
Published: 2014
Subjects:
Online Access:http://hdl.handle.net/10356/60768
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-607682023-03-03T17:04:39Z Hydrologic modelling for green roof systems Law, Kar Mun School of Civil and Environmental Engineering Qin Xiaosheng DRNTU::Engineering::Environmental engineering Rapid development and increasing population has posed urban storm water management issues to the society. Green roof system is introduced to modern development as a method to mitigate these issues. The focus of this project is to come out with a reliable modelling system for green roof. An experimental green roof is set up on the rooftop of School of Civil and Environmental Engineering at Nanyang Technological University, consisting of two green roof units and one control brick roof unit. Several parameters such as rainfall depth and temperature are monitored. The data collected from September to and December 2012 is used to evaluate the performance of green roof compared to control brick roof. To simplify the evaluation process, only data from one of the green roof units is used. Runoff data from both the green roof and control roof is used to generate hydrographs for comparisons. Comparisons of green roof hydrological performance under different rainfall conditions are conducted to have a better understanding of relationship between green roof hydrological performance and rainfall. In addition, the performance of green roof units is compared with the performance of control brick roof in order to come out with a more complete and comprehensive conclusion. Despite of the green roof has its maximum capacity, the results show that green roof has a better performance in term of storm water runoff delay and peak flow rate reduction compared to control brick roof. The green roof is able to delay runoff as long as 51 minutes and reduce runoff flow rate as much as 1.16715E-05 m3/s depending on rainfall conditions. In low intensity and short duration rainfall events, performance of green roof in term of runoff delay and peak flow rate reduction is much better than conventional brick roof.   Bachelor of Engineering (Environmental Engineering) 2014-05-30T04:11:52Z 2014-05-30T04:11:52Z 2014 2014 Final Year Project (FYP) http://hdl.handle.net/10356/60768 en Nanyang Technological University 249 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Environmental engineering
spellingShingle DRNTU::Engineering::Environmental engineering
Law, Kar Mun
Hydrologic modelling for green roof systems
description Rapid development and increasing population has posed urban storm water management issues to the society. Green roof system is introduced to modern development as a method to mitigate these issues. The focus of this project is to come out with a reliable modelling system for green roof. An experimental green roof is set up on the rooftop of School of Civil and Environmental Engineering at Nanyang Technological University, consisting of two green roof units and one control brick roof unit. Several parameters such as rainfall depth and temperature are monitored. The data collected from September to and December 2012 is used to evaluate the performance of green roof compared to control brick roof. To simplify the evaluation process, only data from one of the green roof units is used. Runoff data from both the green roof and control roof is used to generate hydrographs for comparisons. Comparisons of green roof hydrological performance under different rainfall conditions are conducted to have a better understanding of relationship between green roof hydrological performance and rainfall. In addition, the performance of green roof units is compared with the performance of control brick roof in order to come out with a more complete and comprehensive conclusion. Despite of the green roof has its maximum capacity, the results show that green roof has a better performance in term of storm water runoff delay and peak flow rate reduction compared to control brick roof. The green roof is able to delay runoff as long as 51 minutes and reduce runoff flow rate as much as 1.16715E-05 m3/s depending on rainfall conditions. In low intensity and short duration rainfall events, performance of green roof in term of runoff delay and peak flow rate reduction is much better than conventional brick roof.  
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Law, Kar Mun
format Final Year Project
author Law, Kar Mun
author_sort Law, Kar Mun
title Hydrologic modelling for green roof systems
title_short Hydrologic modelling for green roof systems
title_full Hydrologic modelling for green roof systems
title_fullStr Hydrologic modelling for green roof systems
title_full_unstemmed Hydrologic modelling for green roof systems
title_sort hydrologic modelling for green roof systems
publishDate 2014
url http://hdl.handle.net/10356/60768
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