scholarly journals ANALYSIS OF DRAINAGE CHANNEL CAPACITY AT SINDANG STREET IN SINDANG HOUSE PUMP AREA

ASTONJADRO ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 132
Author(s):  
Mohammad Imamuddin ◽  
Dwi Cahyanto
Keyword(s):  
Channel Capacity ◽  
Rainfall Intensity ◽  
Rational Method ◽  
Drainage Channel ◽  
Distribution Method ◽  
Rainfall Station ◽  
Storage Pool ◽  
Using Data ◽  
Pump House ◽  
Pearson Iii Distribution

<p>Sindang street, which is located in North Rawabadak Sub-district, Koja District, is one of the areas in North Jakarta Administrative City which is an area that is prone to flooding. Even though a working pump house is available, there are still puddles in several places. One of the problems that occur is the channel that drains water into the storage pool narrowing due to sedimentation in the channel. By analyzing the channel using the Log Pearson III distribution method using data obtained from the STA Tanjung Priok Rainfall Station, the rainfall intensity that occurs in a 5 year cycle is 170.748 mm, the Mononobe equation is used to find the intensity of rain per hour that occurs. Then it can be searched for the planned rain discharge using a Rational Method so that it is known that there are 2 channels, namely (P and Q) unable to accommodate the rainfall that occurs.</p>

scholarly journals Evaluation of Dimensions and Drainage Performance Office in the Aceh Tamiang Area Kuala Simpang

2021 ◽  
Vol 3 (1) ◽  
pp. 20-32
Author(s):  
Kamaluddin Lubis
Keyword(s):  
Channel Capacity ◽  
Discharge Capacity ◽  
Return Period ◽  
Rainfall Intensity ◽  
Drainage Channel ◽  
Flood Discharge ◽  
Discharge Plan ◽  
Runoff Discharge ◽  
High Degree

The Aceh Tamiang office area is one of the office areas in Kuala Simpang which consists of various offices in the Aceh Tamiang area. The purpose of this research is to identify the drainage condition of the existing primary drainage channel which accommodates runoff discharge, the shape and direction of the flow in the inundation channel in the Aceh Tamiang Kuala Simpang office area, which is expected to help solve the problem of flooding in the 832 m3 / second. And for the channel capacity in this primary drainage drainage of 0.829 m3 / sec, the value is smaller than the planned flood discharge (Qr). Rainfall intensity (I) of 126,432 mm / hour. The plan flood discharge (Qr) for a 5-year return period yields 2,551 m3 / second and the value for channel discharge capacity (Qs) is obtained from the calculation of 2,216 m3 / second. This value is smaller than the value of the planned flood discharge.area. From the results of research conducted by the Aceh Tamiang Kuala Simpang office area is a location with a fairly high degree of rainfall, with a rainfall intensity (I) of 126,432 mm / hour and a flood discharge plan for a 5-year return period obtained a result of 0.

scholarly journals ANALISIS BANJIR KELURAHAN TANJUNG DUREN SELATAN

2020 ◽  
Vol 3 (3) ◽  
pp. 569
Author(s):  
Natanael Tadeus Sutanto ◽  
Wati Asriningsih Pranoto
Keyword(s):  
Water Resources ◽  
Natural Disasters ◽  
Water Flow ◽  
Channel Capacity ◽  
Rainfall Intensity ◽  
Chi Square ◽  
Channel Condition ◽  
Direct Measurements ◽  
Kolmogorov Smirnov ◽  
City Water

Flood is one of the natural disasters that occur due to various factors and causes many losses. Tanjung Duren Selatan village was recorded as having floods in January 2020. This research aims to determine the causes of the flood in the area as well as the solution. The data obtained were taken from BMKG, West Jakarta City Water Resources Department, and direct measurements in the review area. This research analyzed rainfall, channel capacity, channel condition dan topography in Tanjung Duren Selatan village. Rainfall is tested for data compatibility using Chi-Square and Kolmogorov-Smirnov methods. Rainfall intensity is calculated using the Mononobe formula. The capacity of the existing channels is analyzed using Manning formula that will be compared with the planned discharge calculated using Rasional method. The analysis included secondary channels and tertiary channels, based on the calculation of 8 of the 48 channels reviewed that were unable to accommodate the planned discharge. After the analysis, it can be concluded that the flooding in Tanjung Duren Selatan village was caused by the lack of existing channel capacity, contours, and rubbish that blocked the water flow. Floods that occurred on January 1, 2020 due to rainfall that occurred exceeded the planned rainfall.ABSTRAKBanjir merupakan salah satu bencana alam yang terjadi akibat berbagai faktor dan menimbulkan banyak kerugian. Di Kelurahan Tanjung Duren Selatan tercatat mengalami banjir pada bulan Januari 2020. Penelitian ini bertujuan untuk mengetahui faktor penyebab terjadinya banjir pada daerah tersebut serta solusinya. Data-data yang didapat diambil dari BMKG, Suku Dinas Sumber Daya Air Kota Jakarta Barat, serta pengukuran langsung di daerah tinjauan. Pada penelitian ini dianalisis curah hujan, kapasitas saluran, kondisi saluran, serta topografi di Kelurahan Tanjung Duren Selatan. Curah hujan di uji kecocokan datanya menggunakan metode Chi-Square dan Kolmogorov-Smirnov. Intensitas curah hujan di hitung menggunakan rumus Mononobe. Kapasitas saluran eksisting di analisis menggunakan rumus Manning yang akan dibandingkan dengan debit rencana yang dihitung menggunakan metode Rasional. Analisis yang dilakukan mencakup saluran sekunder dan saluran tersier, berdasarkan perhitungan 8 dari 48 saluran yang ditinjau tidak mampu menampung debit rencana. Setelah analisis dilakukan dapat disimpulkan bahwa banjir di Kelurahan Tanjung Duren Selatan disebabkan oleh kurangnya kapasitas saluran eksisting, kontur, serta sampah yang menghalangi aliran air. Banjir yang terjadi pada tanggal 1 Januari 2020 dikarenakan curah hujan yang terjadi melebihi curah hujan rencana.

scholarly journals EVALUASI DAN PERENCANAAN SALURAN DRAINASE DI JALAN SANGGA BUANA II KOTA PALANGKA RAYA

INFO-TEKNIK ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 221
Author(s):  
Agustulusnu Agustulusnu ◽  
I Made Kamiana ◽  
Raden Harya Saputra
Keyword(s):  
Channel Capacity ◽  
Catchment Area ◽  
Domestic Wastewater ◽  
Drainage Channel ◽  
Wastewater Discharge ◽  
Recharge Area ◽  
Drainage Capacity ◽  
Box Culvert ◽  
Survey Approach ◽  
Channel Type

The siltation occurs nearly along the drainage channel at Sangga Buana II Street Palangka Raya. The catchment area for rainfall is increasingly dense with both residence and shop buildings so that the recharge area is also getting decreased. These factors are assumed able to cause a bigger flood. This study aims to evaluate the flood potential in the channel and design the dimensions of the channel required if the drainage discharge consists of design-discharge with a 2-year return period and domestic-wastewater discharge. This study is conducted in 2019 by using a survey approach. The flood potential is analyzed based on the comparison between both the drainage capacity and drainage discharge. The channel capacity is analyzed by the Manning method while the drainage discharge is analyzed by the Rational method. The domestic-wastewater discharge is assumed equally to 80% of the total use of clean water. The result of study showed that the channel capacity is smaller than the drainage discharge, and it occurs almost along the drainage channel of Sangga Buana II Street Palangka Raya. It means that the channel has flood potential so that it needs to be re-designed. The channel is designed with an opened-channel type and squared-shape with 0,65 m width and 0,65 m depth. The discharge direction is divided into two directions. The first direction flows to the drainage channel at Batu Suli Street while the second one flows to the drainage channel at Lawu Street. It is needed to build box culvert in the five locations to ensure that the discharge direction can flow to the drainage channel both at Batu Suli Street and Lawu Street.

scholarly journals ANALYSING THE DRAINAGE SYSTEM USING EPA SWMM 5.1 (STUDY CASE: JABABEKA II INDUSTRIAL, CIKARANG BARU, BEKASI REGENCY)

2020 ◽  
Vol 5 (2) ◽  
pp. 136
Author(s):  
Kezia Kusumaningtyas ◽  
Yunita Ismail
Keyword(s):  
Rainfall Intensity ◽  
Drainage System ◽  
Secondary Data ◽  
Developed Countries ◽  
Runoff Water ◽  
Distribution Method ◽  
Industrial Estate ◽  
Study Case ◽  
Simulation Results ◽  
Precipitation Events

Due to the data in 2030, the urban growth in developed countries is 83% and developing countries is 53%. Jababeka II Industrial Estate as one of the urban industrialization located at Bekasi Regency. In its development, drainage facilities are one thing that must be considered. Because with its function as a channel that carries runoff water to rivers/lakes/reservoirs to avoid flooding. This study aimed to know the existing condition of the drainage system and the water balances in the form of runoff in Jababeka II Industrial Estate by the simulation of SWMM 5.1.  The method of this research used a quantitative method, and the data collection method used secondary data, including the information from the existing drainage system with precipitation events in 12 years (2009-2020) were obtained from the WTP Jababeka Residential, drainage dimension, and masterplan of Jababeka II. In order to calculate rainfall planned used fifth-year return period based, it’s on the city's classification under study. The probability distribution method uses Log-Pearson III with a planned rainfall of 128.22 mm/d and the highest rainfall intensity of 54 mm. Based on the simulation results, it was found that the Jababeka II Industrial Estate contained puddles in several channels. The peak was at the 3rd hour of the simulation, which were 19 channels. It's influenced by the type of soil that is quickly saturated. The simulation of the existing condition at Jababeka II has the highest runoff at the 2<sup>nd</sup> hour of simulation, and floods occurred in 19 channels. It’s affected by the impermeable sub-areas. The water balance result is the amount of precipitation 128.22 mm with the intensity is 54mm due to 5 years forecasting, thus producing the outflow is 128.511 mm. Therefore the number of continuity errors of the surface is -0.227%.

scholarly journals Precipitation Estimates from Commercial Microwave Links: Practical Approaches to Wet-antenna Correction

2021 ◽  
Author(s):  
Jaroslav Pastorek ◽  
Martin Fencl ◽  
Jörg Rieckermann ◽  
Vojtěch Bareš
Keyword(s):  
Rainfall Intensity ◽  
Rain Gauge ◽  
Model Parameters ◽  
Rainfall Events ◽  
Precipitation Estimates ◽  
Attenuation Models ◽  
Using Data ◽  
Quantitative Precipitation Estimates ◽  
Rain Gauge Network ◽  
Commercial Microwave Links

An inadequate correction for wet antenna attenuation (WAA) often causes a notable bias in quantitative precipitation estimates (QPEs) from commercial microwave links (CMLs) limiting the usability of these rainfall data in hydrological applications. This paper analyzes how WAA can be corrected without dedicated rainfall monitoring for a set of 16 CMLs. Using data collected over 53 rainfall events, the performance of six empirical WAA models was studied, both when calibrated to rainfall observations from a permanent municipal rain gauge network and when using model parameters from the literature. The transferability of WAA model parameters among CMLs of various characteristics has also been addressed. The results show that high-quality QPEs with a bias below 5% and RMSE of 1 mm/h in the median could be retrieved, even from sub-kilometer CMLs where WAA is relatively large compared to raindrop attenuation. Models in which WAA is proportional to rainfall intensity provide better WAA estimates than constant and time-dependent models. It is also shown that the parameters of models deriving WAA explicitly from rainfall intensity are independent of CML frequency and path length and, thus, transferable to other locations with CMLs of similar antenna properties.

Evaluasi Sistem darinase Bandar Udara Internasional Kualanamu – Medan

WARTA ARDHIA ◽  
2012 ◽  
Vol 38 (1) ◽  
pp. 1-16
Author(s):  
Ali Murtadho
Keyword(s):  
Drainage System ◽  
Safety Evaluation ◽  
Rational Method ◽  
Rain Water ◽  
Water Runoff ◽  
Drainage Channel ◽  
The South ◽  
Flood Discharge ◽  
Extensive Evaluation ◽  
Calculation Results

Adequate drainage system for disposal of water on the surface and subsurface is important for the safety of aircraft and pavement age. In the context of penerbanga safety, evaluation of the effectiveness of the implementation of the drainage system in Kualanamu-Medan airport, is important. Extensive evaluation was conducted by comparing the dimensions of the channel with the channel dimensions calculated using n formula field with a rational method of flood discharge. Calculation results show that the dimensions of the main drainage channel Kualanamu airport lines 1, 2, 3, 4 5 and the South line has been quallfied as having a greater dimension of the calculation. The results confirms that the drainage system Kualanamu-Medan airport able to accommodate the rain water runoff as well. Sistem drainase yang memadai untuk pembuangan air pada permukaan dan dibawah permukaan adalah penting bagi keselamatan pesawat dan umur perkerasan. Dalam konteks keselamatan penerbangan, evaluasi efektifitas penerapan system drainase di Bandar udara Kualanamu- Medan, adalah penting. Evaluasi dilakukan dengan membandingkan luas dimensi saluran hasil perhitungan dengan dimensi saluran dilapangan menggunakan rumus debit banjir metode rasional serta menurut kaidah-kaidah teknis dalam perencanaan saluran. Hasil perhitungan menunjukkan bahwa dimensi saluran drainase utama bandara Kualanamu jalur 1, 2, 3, 4, 5 dan jalur Selatan telah memenuhi syarat karena mempunyai dimensi yang lebih besar dari hasil perhitungan. Hal tersebut menegaskan bahwa system drainase Bandar udara Kualanamu-Medan mampu untuk menampung limpasan air hujan dengan baik. 

Trends in rainfall intensity for stormwater designs in Ontario

2012 ◽  
Vol 3 (1) ◽  
pp. 1-10 ◽  
Author(s):  
B. Vasiljevic ◽  
E. McBean ◽  
B. Gharabaghi
Keyword(s):  
Rainfall Intensity ◽  
Statistical Significance ◽  
Sewer Pipes ◽  
Rainfall Events ◽  
Rain Gauges ◽  
Long Term Trends ◽  
Using Data ◽  
Storm Sewer

The intensities of short-duration rainfall events are fundamental inputs to the design of stormwater management infrastructure. However, since stormwater infrastructure must function as designed for many decades, if there are long-term trends in rainfall intensities, design storms need to be modified. Evidence demonstrates, using data from 13 rain gauges in Ontario, that storm intensities relevant to urban stormwater (5 year) appear to have changed over the last 30 years. The results show, for example, statistical significance at 80% confidence that the 5-year storm has increased, and 85% that the 2-year storm has increased, for the 1 h storm in Waterloo, using partial duration series (PDS) data. The PDS data indicate intensities are increasing at a rate of 1–3% per year. Results show, for example, that a 5-year recurrence storm for PDS for the period 1970–1984 is now very close in magnitude to a 2-year recurrence storm for the period 1985–2003 for Waterloo, Ontario. The implications for a case study demonstrate that 5 out of 12 storm sewer pipes in a subdivision would need to be increased in diameter to obtain the same level of stormwater performance.

scholarly journals Analisis Debit Puncak Sungai Lubuk Banyau Kabupaten Bengkulu Utara Menggunakan Metode Hidrograf Satuan Sintetik

2020 ◽  
Vol 12 (2) ◽  
pp. 83-90
Author(s):  
Agam Sanjaya
Keyword(s):  
Return Period ◽  
Rainfall Intensity ◽  
Peak Discharge ◽  
Peak Time ◽  
Type I ◽  
Unit Hydrograph ◽  
Distribution Method ◽  
Pearson Type ◽  
Synthetic Unit Hydrograph ◽  
Log Normal

ANALISIS DEBIT PUNCAK SUNGAI LUBUK BANYAU KABUPATEN BENGKULU UTARA DENGAN MENGGUNAKANMETODE HIDROGRAF SATUAN SINTETIK Agam Sanjaya I1), Khairul Amri II2), Muhammad Fauzi III3) 1) 2) 3)Jurusan Teknik Sipil, Fakultas Teknik UNIB Jl. W.R. Supratman, Kandang Limun, Kota Bengkulu 38371, Telp. (0736)344087e-mail: [email protected], [email protected] , [email protected] aliran sungai (DAS) Sungai Lubuk banyau merupakan salah satu DAS yang berada di Bengkulu Utara. DAS Sungai Lubuk banyau mengalir dari daerah hulu yang terletak diwilayah Kabupaten Bengkulu utara. Tujuan dari penelitian ini adalah menganalisa debit puncak rencana akibat intensitas curah hujan pada DAS Lubuk Banyau dalam menganalisis hidrologi dengan menggunakan metode Hidograf Satuan Sintetik (HSS) Gama I, HSS Nakayasu dan HSS Snyder. Berdasarkan hasil perhitungan dari penelitian ini distribusi frekuensi terhadap tiga metode curah hujan, yaitu metode ditribusi Gumbel Tipe I, Log Pearson Tipe III dan Log Normal maka metode yang digunakan untuk perhitungan curah hujan rencana pada penelitian ini adalah Metode Gumbel Tipe I dengan periode ulang 2, 5, 10, 25, 50 dan 100 tahun, yaitu 181,164 mm, 275,356 mm, 337,709 mm, 416,518 mm, 474,974 mm dan 532,998 mm. Dari hasil analisis hidrologi pada penelitian diperoleh debit puncak pada DAS Lubuk Banyau untuk periode ulang 100 tahun dengan metode HSS Snyder adalah 1531,111 m3/detik dengan waktu puncak sebesar 5 jam merupakan debit puncak yang paling besar diantara HSS Gama I dan Nakayasu. untuk hasil debit puncak dengan metode HSS Gama I adalah 776,91m3/detik dengan waktu puncak sebesar 4 jam dan HSS Nakayasu 1023,87 dengan waktu puncak 2,46 jam. Maka didapatkan tinggi permukaan air pada DAS Lubuk Banyau yaitu 1,134 m.Kata kunci: hidrograf satuan sintetik, debit puncak, gama I, nakayasu, dan snyderAbstractWatershed Lubuk Banyau is one of the watersheds in North Bengkulu. The Lubuk River watershed flows from the upstream area located in the northern Bengkulu regency. The purpose of this study is to analyze the planned peak discharge due to rainfall intensity in the Lubuk Banyau watershed in analyzing hydrology using the Synthetic Unit Hydrograph (HSS) method of Gama I, HSS Nakayasu and HSS Snyder. Based on the results of calculations from this study the frequency distribution of three rainfall methods, namely the Gumbel Type I distribution method, Pearson Type III Log and Normal Log, the method used for calculating the planned rainfall in this study is the Gumbel Type I method with a return period of 2, 5, 10, 25, 50 and 100 years, namely 181,164 mm, 275,356 mm, 337,709 mm, 416,518 mm, 474,974 mm and 532,998 mm. From the results of the hydrological analysis in the study, the peak discharge in the Lubuk Banyau watershed for a 100-year return period with the Snyder HSS method was 1531,111 m3 / second with a peak time of 5 hours being the largest peak discharge between Gama I and Nakayasu HSS. for the peak discharge using the HSS Gama I method is 776.91m3 / sec with a peak time of 4 hours and Nakayasu HSS of 1023.87 with a peak time of 2.46 hours. Then the water level obtained at the Lubuk Banyau watershed is 1,134 m.Keywords: synthetic unit hydrograph, peak discharge gama I, nakayasu, and snyder.

scholarly journals ANALISIS PENYEBAB BANJIR KELURAHAN JATAKE - TANGERANG

2021 ◽  
Vol 4 (1) ◽  
pp. 303
Author(s):  
Bryan Jeremia Parulian Harianja ◽  
Wati Asriningsih Pranoto
Keyword(s):  
Natural Disaster ◽  
Channel Capacity ◽  
Rational Method ◽  
Chi Square ◽  
Canal Area ◽  
Channel Conditions ◽  
Kolmogorov Smirnov

A flood is a natural disaster that occurs due to various factors, and there are lots of losses caused by flooding. In the Jatake-Tangerang district, floods were recorded as high as 30-50 cm during February 2020. This study aims to determine the factors that cause flooding in the area to find solutions. In this study, several things need to be analyzed: rainfall, channel capacity, and existing channel conditions. Rainfall was analyzed using the Chi-Square and Kolmogorov-Smirnov methods to determine the type of distribution to be used. The existing plan's capacity is analyzed using the Manning method to determine the discharge, which will be compared with the discharge due to rainfall that occurs using the rational method. Based on the results of the calculation of 6 of the 73 channels reviewed, it cannot accommodate the discharge due to the rainfall that occurs. It is necessary to plan a new channel to change the channel's dimensions that do not meet. After the analysis was carried out, it could be concluded that the flooding in the Jatake-Tangerang area was caused by a lack of capacity of the existing canal, area contours, garbage, and sediment at the bottom of the channel. ABSTRAKBanjir merupakan salah satu bencana alam yang terjadi karena berbagai faktor dan banyak sekali kerugian yang ditimbulkan akibat banjir. Di wilayah Kelurahan Jatake-Tangerang tercatat mengalami banjir setinggi 30-50 cm selama bulan Februari 2020. Penelitian ini bertujuan untuk mengetahui faktor penyebab terjadinya banjir di daerah tersebut sehingga bisa dicari solusinya. Dalam penelitian ini ada beberapa hal yang perlu dianalisis yaitu curah hujan, kapasitas saluran dan kondisi saluran eksisting. Curah hujan dianalisis dengan metode Chi-Square dan Kolmogorov-Smirnov untuk menentukan jenis distribusi yang akan digunakan. Kapasitas rencana eksisting dianalisis dengan metode Manning untuk mengetahui debitnya yang akan dibandingkan dengan debit akibat curah hujan yang terjadi menggunakan metode rasional. Berdasarkan hasil perhitungan 6 dari 73 saluran yang ditinjau tidak mampu menampung debit akibat curah hujan yang terjadi, maka perlu dilakukan perencanaan saluran baru untuk mengubah dimensi saluran yang tidak memenuhi. Setelah analisis dilakukan dapat disimpulkan bahwa banjir di kawasan Jatake-Tangerang disebabkan oleh kurangnya kapasitas saluran eksisting, kontur wilayah, sampah dan sedimen di dasar saluran.

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