Staff View: Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia

Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia

On-site stormwater detention system within a residential property is meant for an environmental protection device that temporarily stores stormwater within the property lot to mitigate flash flood, particularly during rainy seasons brought by the Northeast Monsoon. A field test was constructed in a...

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Main Authors:	Mah, D.Y.S., Ngu, J.O.K., Bustami, R.A., Putuhena, F.J.
Format:	Article
Language:	English
Published:	Environmental Research Institute, Chulalongkorn University 2021
Subjects:	TA Engineering (General). Civil engineering (General) TD Environmental technology. Sanitary engineering
Online Access:	http://ir.unimas.my/id/eprint/33586/1/Case%20Study%20of%20Modular%20Pre-cast%20Concrete%20On-Site%20Stormwater%20Detention%20Susyem%20during%20Monsoon%20Season%20in%20Southeast%20Asia.pdf http://ir.unimas.my/id/eprint/33586/ https://ph01.tci-thaijo.org/index.php/aer https://doi.org/10.35762/AER.2021.43.1.3
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id	my.unimas.ir.33586
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spelling	my.unimas.ir.335862020-12-28T00:32:49Z http://ir.unimas.my/id/eprint/33586/ Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia Mah, D.Y.S. Ngu, J.O.K. Bustami, R.A. Putuhena, F.J. TA Engineering (General). Civil engineering (General) TD Environmental technology. Sanitary engineering On-site stormwater detention system within a residential property is meant for an environmental protection device that temporarily stores stormwater within the property lot to mitigate flash flood, particularly during rainy seasons brought by the Northeast Monsoon. A field test was constructed in a house’s car porch with a 4.40 m x 4.70 m x 0.45 m tank filled with precast-concrete modular units with an effective storage volume of 3.97 m3. The system received water from a 95 m2 house roof via 0.1 m diameter pipe, discharged water via 0.05 m diameter pipe. It had recorded six observed storm events coincided with the 2019/2020 monsoon season that consisted 20-50 mm peak hourly rainfall, 0.0007-0.0018 m3s-1 inflow, 0.0005-0.0012 m3s-1 outflow and 0.21-0.47 m water level. Another four historical storm events coincided with the monsoon from 2015-2017 were sourced to augment the analysis. A computer model developed using the Storm Water Management Model was calibrated and verified using the six observed events. The Kolmogorov-Smirnov goodness of fit tests between the observed and modelled cumulative distributions had produced 0.01-0.14 maximum vertical distances that were lower than the 0.41-0.68 critical values indicating close matches. As such, the calibrated and verified model was used to simulate the historical storm events with 40-50 mm peak hourly rainfall and produced 0.0010-0.0013 m3s-1 inflow, 0.00072-0.00076 m3s-1 outflow and 0.41-0.45 m water level. By combining the field test and computer simulation model, it was found the system was able to contain all stormwaters from Northeast Monsoon. However, it had a weakness which the system was approaching its maximum capacity once the peak hourly rainfall exceeded 45 mm. With such a procedure in place, improvement could be carried out. Environmental Research Institute, Chulalongkorn University 2021 Article PeerReviewed text en http://ir.unimas.my/id/eprint/33586/1/Case%20Study%20of%20Modular%20Pre-cast%20Concrete%20On-Site%20Stormwater%20Detention%20Susyem%20during%20Monsoon%20Season%20in%20Southeast%20Asia.pdf Mah, D.Y.S. and Ngu, J.O.K. and Bustami, R.A. and Putuhena, F.J. (2021) Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia. Applied Environmental Research, 43 (1). pp. 28-40. ISSN 2287-075X https://ph01.tci-thaijo.org/index.php/aer https://doi.org/10.35762/AER.2021.43.1.3
institution	Universiti Malaysia Sarawak
building	Centre for Academic Information Services (CAIS)
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Sarawak
content_source	UNIMAS Institutional Repository
url_provider	http://ir.unimas.my/
language	English
topic	TA Engineering (General). Civil engineering (General) TD Environmental technology. Sanitary engineering
spellingShingle	TA Engineering (General). Civil engineering (General) TD Environmental technology. Sanitary engineering Mah, D.Y.S. Ngu, J.O.K. Bustami, R.A. Putuhena, F.J. Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia
description	On-site stormwater detention system within a residential property is meant for an environmental protection device that temporarily stores stormwater within the property lot to mitigate flash flood, particularly during rainy seasons brought by the Northeast Monsoon. A field test was constructed in a house’s car porch with a 4.40 m x 4.70 m x 0.45 m tank filled with precast-concrete modular units with an effective storage volume of 3.97 m3. The system received water from a 95 m2 house roof via 0.1 m diameter pipe, discharged water via 0.05 m diameter pipe. It had recorded six observed storm events coincided with the 2019/2020 monsoon season that consisted 20-50 mm peak hourly rainfall, 0.0007-0.0018 m3s-1 inflow, 0.0005-0.0012 m3s-1 outflow and 0.21-0.47 m water level. Another four historical storm events coincided with the monsoon from 2015-2017 were sourced to augment the analysis. A computer model developed using the Storm Water Management Model was calibrated and verified using the six observed events. The Kolmogorov-Smirnov goodness of fit tests between the observed and modelled cumulative distributions had produced 0.01-0.14 maximum vertical distances that were lower than the 0.41-0.68 critical values indicating close matches. As such, the calibrated and verified model was used to simulate the historical storm events with 40-50 mm peak hourly rainfall and produced 0.0010-0.0013 m3s-1 inflow, 0.00072-0.00076 m3s-1 outflow and 0.41-0.45 m water level. By combining the field test and computer simulation model, it was found the system was able to contain all stormwaters from Northeast Monsoon. However, it had a weakness which the system was approaching its maximum capacity once the peak hourly rainfall exceeded 45 mm. With such a procedure in place, improvement could be carried out.
format	Article
author	Mah, D.Y.S. Ngu, J.O.K. Bustami, R.A. Putuhena, F.J.
author_facet	Mah, D.Y.S. Ngu, J.O.K. Bustami, R.A. Putuhena, F.J.
author_sort	Mah, D.Y.S.
title	Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia
title_short	Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia
title_full	Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia
title_fullStr	Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia
title_full_unstemmed	Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia
title_sort	case study of modular pre-cast concrete on-site stormwater detention susyem during monsoon season in southeast asia
publisher	Environmental Research Institute, Chulalongkorn University
publishDate	2021
url	http://ir.unimas.my/id/eprint/33586/1/Case%20Study%20of%20Modular%20Pre-cast%20Concrete%20On-Site%20Stormwater%20Detention%20Susyem%20during%20Monsoon%20Season%20in%20Southeast%20Asia.pdf http://ir.unimas.my/id/eprint/33586/ https://ph01.tci-thaijo.org/index.php/aer https://doi.org/10.35762/AER.2021.43.1.3
_version_	1687397436216049664
score	13.222552

Case Study of Modular Pre-cast Concrete On-Site Stormwater Detention Susyem during Monsoon Season in Southeast Asia

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