A performance review of grass swales channel in Malaysia
Grass swales is a series of vegetated open channel that are designed specifically to treat and attenuate stormwater runoff for a specified water quantity volume. The aim of this research is to study the hydraulics characteristics of grass swales and to study the flow attenuation and the flow c...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit UTHM
2022
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/7579/1/P14124_70b9f266388d6556d7412f7f6c22f705.pdf http://eprints.uthm.edu.my/7579/ https://doi.org/10.30880/rtcebe.2022.03.01.079 |
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| Summary: | Grass swales is a series of vegetated open channel that are designed
specifically to treat and attenuate stormwater runoff for a specified water quantity
volume. The aim of this research is to study the hydraulics characteristics of grass
swales and to study the flow attenuation and the flow conveyance of swale. Studies
showed that grass swales are very efficient in stormwater quality control by
reducing volume and peak flowrate. The previous studies the performance of grass
swales in term of stormwater quantity control have been analyzed from the article
and journal. The method that have been used including Mean-Section Method for
measuring the flow discharge and Manning’s equation to determine the hydraulic
roughness. Rational method has been used to calculate the peak discharge, peak
flow to determine the performance of swales as stormwater quantity control. Based
on the review, the Manning coefficient has been studies and compared according
to MSMA (2012) which is higher than 0.050. Besides, Grass swale in UTHM and
USM Engineering Campus are very capable to attenuate the flow and convey
stormwater runoff. At the end of the study, will be able to find out the hydraulic
characteristics of grass swale and the flow attenuation and conveyance capacity of
swale and whether the application of grass swale suitable to be applied as one of
the best management practices (BMP) in mitigating flash flood in Malaysia. |
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