scholarly journals ALTERNATIVE USE OF ROUNDABOUT AS STORM WATER DETENTION POND

2017 ◽  
Vol 8 (1) ◽  
pp. 16-24
Author(s):  
D.Y.S. Mah ◽  
T. Y. Ho

This study explores the concept of utilising roundabout as a component of the urban stormwater system. The research team has developed a drainage model to incorporate a roundabout as dry detention pond. In addition, the model is used to determine the effectiveness of such design by applying the concept virtually on a real-world roundabout at the southeast of UniGarden, a housing estate situated about 17 km from Kuching City of Sarawak. Computer representations of the existing drainage system and roundabout dry detention pond are built using the USEPA SWMM software. The modelling effort shows that the open space provided by a large roundabout is capable of achieving the maximum attenuation of storm flows and is able to hold 100% of runoff from 100-year storm. As empty spaces are increasingly hard to come by in urban areas; therefore, using an open space in a roundabout for dry detention pond is a good example of an innovative drainage system.

2020 ◽  
Vol 17 (2) ◽  
pp. 1539-1546
Author(s):  
H. Maseri ◽  
O. S. Selaman ◽  
M. A. Mannan ◽  
S. N. L. Taib

Permeable pavements are a key Storm water management measure employed both to attenuate surface runoff in urban areas and to filter urban storm water pollutants. Existing permeable pavements (PP) are design with the specific percentage porosity whereby enabling excess rainwater to infiltrate through the system and acting as a depression storage at the same time. Depression storage basically refers to the volume of water trapped in the depression when the precipitation of a storm reaches the ground and filled up all the depression before it can flow over the surface. Cylindrical Detention Pond (CDP) is an alternative paving material that may alleviate many of the hydrological problems caused by urban runoff from developed areas. CDP consist of three basic component; top cover, bottom cover and hollow cylindrical at centre (300 mm thickness). The hollow cylindrical has approximate 50 percent porosity from the total solid of component, which is every 1 inch (25 mm) of pavement depth can hold 0.5 inches (12.5 mm) of rain in theoretical. In this study, the depression storage rate of CDP was investigated under three different rainfall intensity scenarios which are 77 mm/hr (low), 153 mm/hr (medium), and 230 mm/hr (heavy) respectively whereby it function to monitoring the analytical trend line. The experiment was conducted in model box in the laboratory under fully saturated condition. It found that the CDP can performed to detent the water until 180 min of excess rainfall for all 2 year ARI, 5 year ARI, 10 year ARI, 20 year ARI, 50 year ARI and 100 year ARI with different rates. CDP’s able to reduce the runoff up to 77% of the total rainfall volume. The result was proved the hollow cylindrical at centre of CDP very effective in runoff volume reduction according to the different ARI trend line projection.


2018 ◽  
Vol 73 ◽  
pp. 05016 ◽  
Author(s):  
Suripin Suripin ◽  
Sachro Sri Sangkawati ◽  
Samto Atmojo Pranoto ◽  
Edhisono Sutarto ◽  
Budieny Hary ◽  
...  

Increased urbanization has an impact on increased impervious surface, consequently the urban drainage system becomes gradually overloaded, with frequent spills and inundate urban areas. Upgrade or re-design the existing drainage system is not an effective solution because it does not address the source of the problem. It is necessary strategies for urbanization reduction of storm-water runoff. These strategies are aimed to reduce storm-water runoff mainly through water infiltration. One of the strategies is to develop permeable pavement. This study is aimed to test the capacity of permeable pavement through the development of full scale physical models in the parking lot. The results show that proposed permeable pavement are able to significantly reduce volume and peak discharge of storm-water runoff, delay the start of runoff and slow the peak discharge. The application of this proposed permeable pavement in the urban area is strongly recommended to reduce drainage load as well as to increase groundwater recharge.


2015 ◽  
Vol 13 (1) ◽  
pp. 56
Author(s):  
Laksni Sedyowati ◽  
Ery Suhartanto

Kajian Pengaruh Sistem Drainase dan Ruang Terbuka Hijau Eksisting pada Kawasan Ruas Jalan Utama Kota Malang (Suatu Upaya Pengendalian Genangan Di Daerah Perkotaan)The Influence of Existing Drainege System Green Open Space to The Flooding in The Main Roads of Malang City (A Flooding Control Efforts In Urban Areas)Laksni Sedyowati1 & Ery Suhartanto21Program Doktor Teknik Sipil, Minat Sumberdaya Air, Universitas Brawijaya,2Jurusan Teknik Pengairan, Fakultas Teknik, Universitas BrawijayaAlamat korespondensi : Alamat korespondensi : Jln. MT. Haryono, No 167 MalangEmail: 1)[email protected] new paradigm of urban drainage system puts the city infrastructure based on the concept of environmentally sound drainage system or sustainable. It is necessary to retain the rain water in the area to enlarge the amount of water that infiltrate into the soil through natural or artificial recharge area. Research problem is how the influence of the existing drainage system and the green open space (RTH) to the runoff discharge. The study design is in the form of field observations and analytical activities: analysis of the characteristics of rain with a variety of 10-year historical data; land cover analysis and capacity of the existing green space; analysis of the capacity of the existing drainage system; analysis of the total runoff discharge and discharge runoff that are not controlled by the existing drainage system and RTH. The results showed that the total capacity of existing drainage systems and green space of 36,066 m3/sec. The amount of discharge that is not controlled on the time period of 5, 10, 25, 50 and 100 year, respectively: 11.95 m3/s; 20.28 m3/s; 30.82 m3/s; 38.68 m3/s; 46.56 m3/s. Uncontrolled runoff discharge causing flooding on roads in the study area with the water level between 22-35 cm.Keywords: Sustainable Urban Drainage System, Green Open Space, Runoff DischargeAbstrakParadigma baru sistem drainase menempatkan drainase perkotaan sebagai prasarana kota yang dilandaskan pada konsep drainase yang berwawasan lingkungan atau berkelanjutan. Untuk itu perlu diupayakan agar air hujan yang jatuh ditahan terlebih dulu untuk memperbesar jumlah air yang meresap ke dalam tanah melalui daerah resapan alamiah maupun buatan. Permasalahan yang akan dikaji dalam penelitian ini adalah bagaimana pengaruh sistem drainase dan ruang terbuka hijau (RTH) eksisting terhadap debit limpasan, sebagai dasar pengembangan RTH yang merupakan alternatif sistem drainase berkelanjutan. Metode penelitian berupa observasi lapangan dan analitik dengan tahapan kegiatan: analisis karakteristik hujan dengan berbagai kala ulang menggunakan data historis 10 tahun terakhir; analisis tutupan lahan dan kapasitas ruang terbuka hijau eksisting; analisis kapasitas sistem drainase eksisting; analisis debit limpasan total dan debit limpasan yang tidak dikendalikan oleh sistem drainase dan RTH eksisting. Hasil penelitian menunjukkan bahwa apasitas total sistem drainase dan RTH eksisting sebesar 36,066 m3/detik. Besarnya debit yang tidak dikendalikan pada kala ulang 5 thn, 10 thn, 25 thn, 50 thn dan 100 thn berturut-turut sebesar 11,95 m3/dt; 20,28 m3/dt ; 30,82 m3/dt; 38,68 m3/dt; 46,56 m3/dt. Debit limpasan yang tidak terkendali menyebabkan terjadinya genangan di ruas jalan pada daerah studi dengan tinggi genangan antara 22 - 35 cm.Kata kunci: sistem drainase berkelanjutan, ruang terbuka hijau, debit limpasan


2021 ◽  
Vol 2 (81) ◽  
pp. 66-67
Author(s):  
SEREBRYAKOV ANDREY O. ◽  

The paper highlights the problems associated with the processes of flooding of urban areas due to the insufficient functioning of drainage and storm water systems. The conclusion about the impracticability of the arrangement of drainage and storm water systems due to their material and financial capacity is justified, since such systems create environmental problems. For the disposal of ground, storm, and domestic and industrial wastewater, a comprehensive system of injection, beam, and fan facilities is recommended. The stages of preparation, design and implementation of such systems are proposed. Flooding of the city of Astrakhan leads to the rise of groundwater to the surface of the urban area, salinization of soils and the expansion of salt marshes, the death of green spaces, flooding of basements and houses in low-lying areas. Inevitably, the development of salt corrosion of foundations and walls, followed by the destruction of buildings. In these processes of "unity and struggle of opposites "(the relationship "man-water"), a person loses in his struggle for progress and comfort with insufficient (or inept) interaction with the environment (including natural underground and surface waters). The existing drainage system of the city is practically not functioning. The actual absence of a drainage system is practically confirmed by the next rains.


Water ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1974
Author(s):  
Ismail Fathy ◽  
Gamal M. Abdel-Aal ◽  
Maha Rashad Fahmy ◽  
Amira Fathy ◽  
Martina Zeleňáková

Storm water drainage system in urban areas became a deterministic system, especially in light of the current climate changes. This system eliminates the excess water resulting from heavy rainfall, which leads to disruption of daily life. Irregular maintenance of the network system, problems appear, especially the blockage of the covers or network pipes, which affects the efficiency of the network. This study deals with the experimental investigation of blockage on storm network system and the relationship between efficiency of the system and blockage parameters. Many scenarios of blockage within grate and pipe were studied and its impact on storm system efficiency calculated. For the pipe system, two scenarios were studied; the first one is the blockage of end main pipe with relative blockage height (15%, 30%, 50%, 70%, and 90%). The second one is the blockage through the main pipe with relative blockage height (25%, 50%) and relative blockage length (33%, 67%, and 100%). For grate, the blockage is investigated with the blockage area ratio (12.5%, 25%, 37.5%, and 50%). In addition, the combined blockage of grate and pipe was studied. Finally, an equation has been created to estimate the system efficiency as a function of blockage ratios and system discharges. The results indicated that for surface blockage (12.5%, 25%, 37.5%, and 50%), the discharge efficiency decreased as the amount of blockage increased with different grate blockage by (17.8%, 19.3%, 21%, and 24.6%), respectively.


2018 ◽  
Vol 7 (3.18) ◽  
pp. 31
Author(s):  
Darrien Yau Seng Mah ◽  
Tze Chiat Ng ◽  
Frederik Josep Putuhena

It is proposed to merge an infiltration facility to the conventional road curb system. Towards this end, a Storm Water Management Model (SWMM) is developed to explore the effectiveness of the proposed component at Riveria housing estate, Kota Samarahan, Sarawak. The findings show that the integration is effective in reducing peak runoff. The results indicate that a scenario of hollow infiltration trench achieves zero runoff, and a scenario of filled infiltration trench has a 43.6% reduction in runoff compared with existing road drainage condition. Furthermore, the hollow infiltration trench is found to be the best among all the given scenarios. The SWMM modelling results provide a tool to quantitatively measure the probable use of the proposed measures to improve the existing road drainage system.  


Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2647
Author(s):  
Esteban Sañudo ◽  
Luis Cea ◽  
Jerónimo Puertas

Dual urban drainage models allow users to simulate pluvial urban flooding by analysing the interaction between the sewer network (minor drainage system) and the overland flow (major drainage system). This work presents a free distribution dual drainage model linking the models Iber and Storm Water Management Model (SWMM), which are a 2D overland flow model and a 1D sewer network model, respectively. The linking methodology consists in a step by step calling process from Iber to a Dynamic-link Library (DLL) that contains the functions in which the SWMM code is split. The work involves the validation of the model in a simplified urban street, in a full-scale urban drainage physical model and in a real urban settlement. The three study cases have been carefully chosen to show and validate the main capabilities of the model. Therefore, the model is developed as a tool that considers the main hydrological and hydraulic processes during a rainfall event in an urban basin, allowing the user to plan, evaluate and design new or existing urban drainage systems in a realistic way.


2018 ◽  
Vol 11 (6) ◽  
pp. 27 ◽  
Author(s):  
Pengfei Zhang ◽  
Samuel T. Ariaratnam

The rate of urbanization has been impacted by global economic growth. A strong economy results in more people moving to already crowded urban centers to take advantage of increased employment opportunities often resulting in sprawling of the urban area. More natural land resources are being exploited to accommodate these anthropogenic activities. Subsequently, numerous natural land resources such as green areas or porous soil, which are less flood-prone and more permeable are being converted into buildings, parking lots, roads and underground utilities that are less permeable to storm water runoff from rain events. With the diminishing of the natural landscape that can drain storm water during a rainfall event, urban underground drainage systems are being designed and built to tackle the excess runoff resulting from urbanization. However, the rapid pace of urbanization has profoundly affected the formation of urban runoff thus resulting in the existing underground drainage system being unable to handle current flow conditions. This paper discusses storm water impacts in urbanized areas globally by reviewing historical storm water events and mitigation strategies accompanied with runoff reduction performance that are considered simultaneously for the purpose of relieving the stress on underground drainage systems. It was found that the stormwater impact on ten selected typical urban areas were enormously destructive followed by billions of direct economy loss, fatalities, damaged properties and residents’ relocations. Furthermore, the meta-analysis of selected six runoff mitigation methods indicated that the average runoff reduction percent ranged from 43% to 61% under different rain events in various installed sites across different event years.


2020 ◽  
Vol 3 (2) ◽  
pp. 143-154
Author(s):  
Rahmat Faizal ◽  
Noerman Adi Prasetya ◽  
Zikri Alstony ◽  
Aditya Rahman

Tarakan City experiences problems with standing water during the rainy season, especially in the west Tarakan sub-district which is the center of Tarakan. This puddle not only submerged settlements and offices but also shops and access roads that caused considerable economic losses. An evaluation was carried out by using the Storm Water Management Model (SWMM). SWMM is a rainfall-runoff simulation model used for simulating the quantity and quality of surface runoff from urban areas. Based on the evaluation using SWMM software, the drainage system in Tarakan, especially in Jalan Mulwarman has several inundated channels, namely channels 2, 3, 4, 5, 6, 7, 11, 12, 13, 14. This is influenced by the dimensions of the drainage channel that cannot accommodate existing water runoff and sediment thickness that covers the drainage channels so that the capacity is reduced, if it rains it will cause puddles at several points in Tarakan City. In order to deal with these puddles, it is necessary to change the dimensions of the channel and routinely dredge sediments that cover the drainage channels.


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