Green roof performance study using rubber crumb, oil palm waste material and natural fibres for stormwater runoff mitigation

The purpose of this study is to investigate the green roof performance study using waste material and natural fibres for storm water runoff mitigation. The data were collected from different test bed under simulated rainfall with the intensity of 200 mm/h and testing were done for 0, 2 and 6% of slo...

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Main Author:	Nurul Shahadahtul Afizah Asman
Format:	Thesis
Language:	English English
Published:	2018
Subjects:	SB421-439.8 Classes of plants Including annuals climbers ferns lawns perennials shrubs TD419-428 Water pollution
Online Access:	https://eprints.ums.edu.my/id/eprint/42252/1/24%20PAGES.pdf https://eprints.ums.edu.my/id/eprint/42252/2/FULLTEXT.pdf
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spelling	my-ums-ep.422522024-12-16T04:09:56Z Green roof performance study using rubber crumb, oil palm waste material and natural fibres for stormwater runoff mitigation 2018 Nurul Shahadahtul Afizah Asman SB421-439.8 Classes of plants Including annuals, climbers, ferns, lawns, perennials, shrubs TD419-428 Water pollution The purpose of this study is to investigate the green roof performance study using waste material and natural fibres for storm water runoff mitigation. The data were collected from different test bed under simulated rainfall with the intensity of 200 mm/h and testing were done for 0, 2 and 6% of slope. The design of green roof layers consists of waterproofing, drainage, filter, substrate and a vegetation layer. In this research, waste materials (WM) and natural fibres (NF) are used on the drainage and filter layer, respectively. Three stages involved during the data collecting process. Stage 1 is the drainage layer, followed by stage 2 (drainage layer with filter layer) and finally the stage 3 (drainage, filter, substrate and vegetation layer). A test bed with waterproofing layer as a control and three types of waste are selected for each test bed which is rubber crumbs, oil palm shells and polyfoam. Natural fibres as the filter layer in green roofs are placed on top of the drainage layer. Natural fibres chosen are coconut fibre, oil palm fibre and sugarcanes fibres. The plant used in the green roof is Arachis pintoi, which known for its hardy and vigorous growth across all seasons. Physical properties of materials are analysed to determine the diameter of fibres using a scanning electron microscope (SEM), the density of materials (specific gravity test) and, the water absorption of both natural fibres and waste materials. The weights of green roofs were measured before and after each stage for all the samples to determine the dry and wet weight of green roofs. The hydrological parameters recorded are the hydrograph and peak runoff, peak attenuation and water retention. The result indicates that the water retention percentages are higher as the slope increases and after the layer is added. For all simulation testing of green roofs made from WM and NF on hydrological performances, the water retention (RPI) are within the range of 31.92% to 87.09% and peak attenuation (PDPI) of 55.85% to 94.83%. OPSSF with a higher wet weight and live load of 19.19 kg/m2 are acceptable. In conclusion, oil palm shells and sugarcanes fibres combinations perform the best hydrologically which have highest peak runoff, lowest peak attenuation and water retention compared to other combinations on 6% slope of green roof. The roof slope of 6% will give the best hydrological performance compared to the roofs laid flat or on 2% slope. Finally, the live load are higher that the control (drainage layer only) more than 34% on complete green roof systems. 2018 Thesis https://eprints.ums.edu.my/id/eprint/42252/ https://eprints.ums.edu.my/id/eprint/42252/1/24%20PAGES.pdf text en public https://eprints.ums.edu.my/id/eprint/42252/2/FULLTEXT.pdf text en validuser doctoral Universiti Malaysia Sabah Fakulti Kejuruteraan
institution	Universiti Malaysia Sabah
collection	UMS Institutional Repository
language	English English
topic	SB421-439.8 Classes of plants Including annuals climbers ferns lawns perennials shrubs TD419-428 Water pollution
spellingShingle	SB421-439.8 Classes of plants Including annuals climbers ferns lawns perennials shrubs TD419-428 Water pollution Nurul Shahadahtul Afizah Asman Green roof performance study using rubber crumb, oil palm waste material and natural fibres for stormwater runoff mitigation
description	The purpose of this study is to investigate the green roof performance study using waste material and natural fibres for storm water runoff mitigation. The data were collected from different test bed under simulated rainfall with the intensity of 200 mm/h and testing were done for 0, 2 and 6% of slope. The design of green roof layers consists of waterproofing, drainage, filter, substrate and a vegetation layer. In this research, waste materials (WM) and natural fibres (NF) are used on the drainage and filter layer, respectively. Three stages involved during the data collecting process. Stage 1 is the drainage layer, followed by stage 2 (drainage layer with filter layer) and finally the stage 3 (drainage, filter, substrate and vegetation layer). A test bed with waterproofing layer as a control and three types of waste are selected for each test bed which is rubber crumbs, oil palm shells and polyfoam. Natural fibres as the filter layer in green roofs are placed on top of the drainage layer. Natural fibres chosen are coconut fibre, oil palm fibre and sugarcanes fibres. The plant used in the green roof is Arachis pintoi, which known for its hardy and vigorous growth across all seasons. Physical properties of materials are analysed to determine the diameter of fibres using a scanning electron microscope (SEM), the density of materials (specific gravity test) and, the water absorption of both natural fibres and waste materials. The weights of green roofs were measured before and after each stage for all the samples to determine the dry and wet weight of green roofs. The hydrological parameters recorded are the hydrograph and peak runoff, peak attenuation and water retention. The result indicates that the water retention percentages are higher as the slope increases and after the layer is added. For all simulation testing of green roofs made from WM and NF on hydrological performances, the water retention (RPI) are within the range of 31.92% to 87.09% and peak attenuation (PDPI) of 55.85% to 94.83%. OPSSF with a higher wet weight and live load of 19.19 kg/m2 are acceptable. In conclusion, oil palm shells and sugarcanes fibres combinations perform the best hydrologically which have highest peak runoff, lowest peak attenuation and water retention compared to other combinations on 6% slope of green roof. The roof slope of 6% will give the best hydrological performance compared to the roofs laid flat or on 2% slope. Finally, the live load are higher that the control (drainage layer only) more than 34% on complete green roof systems.
format	Thesis
qualification_level	Doctorate
author	Nurul Shahadahtul Afizah Asman
author_facet	Nurul Shahadahtul Afizah Asman
author_sort	Nurul Shahadahtul Afizah Asman
title	Green roof performance study using rubber crumb, oil palm waste material and natural fibres for stormwater runoff mitigation
title_short	Green roof performance study using rubber crumb, oil palm waste material and natural fibres for stormwater runoff mitigation
title_full	Green roof performance study using rubber crumb, oil palm waste material and natural fibres for stormwater runoff mitigation
title_fullStr	Green roof performance study using rubber crumb, oil palm waste material and natural fibres for stormwater runoff mitigation
title_full_unstemmed	Green roof performance study using rubber crumb, oil palm waste material and natural fibres for stormwater runoff mitigation
title_sort	green roof performance study using rubber crumb, oil palm waste material and natural fibres for stormwater runoff mitigation
granting_institution	Universiti Malaysia Sabah
granting_department	Fakulti Kejuruteraan
publishDate	2018
url	https://eprints.ums.edu.my/id/eprint/42252/1/24%20PAGES.pdf https://eprints.ums.edu.my/id/eprint/42252/2/FULLTEXT.pdf
_version_	1818611454351245312

Green roof performance study using rubber crumb, oil palm waste material and natural fibres for stormwater runoff mitigation

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