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All Journal Jurnal Spektran Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan MEDIA KOMUNIKASI TEKNIK SIPIL Research Report - Engineering Science Jurnal Teknik Sipil Sinergi Rekayasa Sipil Journal of the Civil Engineering Forum Jurnal Rekayasa Konstruksi Mekanika Sipil JURNAL TEKNIK HIDRAULIK JURNAL SUMBER DAYA AIR CSID Journal of Infrastructure Development (CSID-JID) Journal of Infrastructure and Facility Asset Management Journal of the Civil Engineering Forum

Doddi Yudianto

Department Of Civil Engineering, Faculty Of Engineering, Parahyangan Catholic University

Author-ID : 424116

Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Mathematics Social Sciences Transportation

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ALOKASI DAN DISTRIBUSI AIR DI DAERAH IRIGASI JATILUHUR INDONESIA: EVALUASI DAN TANTANGAN Rahmat Sudiana; Doddi Yudianto; Zhang Xiuju
JURNAL SPEKTRAN Vol 5 No 2 (2017): Vol. 5, No. 2, Juli 2017
Publisher : Master of Civil Engineering Program Study, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (852.202 KB)

Indonesia has rich natural resources including water resources. The abundance of water resources is characterized by an annual rainfall averaging about 2790 mm. Jatiluhur irrigation area is one of large irrigation system in Indonesia which plays main role for national food and agriculture defense. It receives water from Djuanda Multipurpose Reservoir located in Citarum River West Java Indonesia. This reservoir is responsible to irrigate 240,000 ha paddy field, raw water for domestic municipal industrial (DMI) and hydropower generation. The water is released from the reservoir to Curug Diversion Weir where the water is diverted to West Tarum Canal (WTC), East Tarum Canal (ETC) and North Tarum Canal (NTC). Mechanisms for water allocation and distribution are professionally managed by Jasa Tirta II Public Corporation (PJT II). Although provision of irrigation system seems performing well, some aspects still need improvement and development. The important issue for improvement is quality and reliability of basic data required to prepare the water allocation plan and distribution schedule. Taking into account future developments which will increase combined water demand. Consequently, there is a need to investigate how efficient the system is working currently and which improvements can be proposed to increase overall water use efficiency. Water balance in the Jatiluhur irrigation system theoretically capable to fulfill water demand until 2025 but climate change issue should be considered as period of dry season and wet season will be shifted. Based on the research scenario, dry season will be longer and wet season will be shorter with more intense rainfall. Keywords: Jatiluhur irrigation area, Djuanda multipurpose reservoir, water allocation & distribution, water efficiency, water balance

PEMODELAN NUMERIK 1-D ADVEKSI-DISPERSI UNTUK MEMPREDIKSI KONSTRENTASI POLUTAN DALAM BADAN SUNGAI Adhita Prasetya; Doddi Yudianto; Yiquing Guan
Jurnal Teknik Sipil Vol. 14 No. 3 (2017)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Abstrak: Peran rekayasa Hidrologi dan Hidrolik dalam pengelolaan lingkungan menjadi amat penting dalam mengatasi permasalahan-permasalahan polutan di area perairan. Seperti telah kita ketahui bersama, pengujian kualitas air sungai membutuhkan biaya dan waktu yang cukup lama, selain itu untuk memperoleh informasi areal terpapar polutan tertentu sering kali mengalami kendala. Studi ini mencoba untuk mengatasi beberapa keterbatasan tersebut diatas dengan cara membuat pemodelan numeric 1-D adveksi-dispersi yang bertujuan untuk memprediksi konsenta-si polutan dalam badan sungai. Model numerik yang dikembangkan bertujuan untuk mempred-iksi transportasi massal kontaminan di badan sungai. Dalam melakukan analisa, metode yang digunakan adalah analisis 1 dimensi dan metode numerik menggunakan skema lax-wendroff . selain itu untuk memudahkan dalam pemodelan, dibuat model sungai rectangular dengan lebar saluran (B) 8 m, tinggi muka air (H) =0,4 m, kemiringan sungai ( so) = 0.00005, dan panjang saluran (L) = 150 km, serta dasar saluran adalah beton. Untuk mesimulasikan konsentrasi menggunakan finite difference schemes pada jarak 50 s.d 100 km, software yang digunakan ada-lah MATLAB serta menggunakan skema Lax-Wendroff (LW) untuk memecahkan Persamaan 1D Adveksi-Dispersi. Dari hasil pemodelan dapat disimpulkan terjadi pelebaran kurva konsen-trasi polutan akibat pengaruh dari hidrolika. Pada saat konsentrasi polutan tertinggi berada 50 km dari lokasi pembuangan limbah, area terpapar polutan 40 – 60 km, sedangkan pada jarak 100 km dari lokasi pembuangan limbah, area yang terpapar oleh polutan 80 – 120 km .

Application of TRMM Data to the Analysis of Water Availability and Flood Discharge in Duriangkang Dam Willy Willy; Bambang Adi Riyanto; Doddi Yudianto; Albert Wicaksono
Journal of the Civil Engineering Forum Vol. 6 No. 1 (January 2020)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

One of the challenges in hydrologic modelling in Indonesia is data limitation. Rainfall data quality is rarely evaluated, and in some cases, the data are unavailable. The Tropical Rainfall Measuring Mission (TRMM), satellite rainfall data provided by NASA, is an alternative method to solve such problems. This study aims to promote the use of TRMM data to analyze water availability and flood discharge in Duriangkang Dam, Batam City, Indonesia, in comparison with the use of available ground station data. Results show that the ground station data contain some errors; however, overall, the data show similar patterns and acceptable differences compared with the TRMM data. The NRECA and HEC-HMS models are used to analyze water availability, and both models are calibrated using the available reservoir water level data. The NRECA model generally shows a good fit of monthly discharge, although the use of TRMM results in slightly overestimated values in dry years. Similar results are obtained for daily discharge computation using the HEC-HMS model. Water availability analysis using the TRMM data shows an acceptable margin of error. When flood discharge is computed using an uncalibrated HEC-HMS model, the TRMM data somehow yield a lower maximum daily rainfall value than the ground station data. As a result, the obtained 10,000-year flood calculated using the Hang Nadim Station and TRMM data are 1,086 and 624 m3/s, respectively. Therefore, the use of corrected TRMM data in flood discharge computation is essential but increases the value up to 897 m3/s.

Application of TRMM in the Hydrological Analysis of Upper Bengawan Solo River Basin Theo Senjaya; Doddi Yudianto; Xie Yuebo; Wanny K. Adidarma
Journal of the Civil Engineering Forum Vol. 6 No. 3 (September 2020)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.57125

Rainfall is a major water resource with a significant role in terms of growth, environment concerns, and sustainability. Several human activities demand adequate water supply for drinking, agriculture, domestic, and commercial consumption. The accuracy of any hydrologic study depends heavily on the availability of good-quality precipitation estimates. Most countries are unable to provide sufficient climatic data, including rainfall and observed discharge statistics. This scarcity is a huge obstacle in conducting thorough hydrologic studies over a certain period. For instance, Indonesia, as an archipelagic country, has long been faced with data availability problems. For this reason, Tropical Rainfall Measuring Mission (TRMM), which was developed by NASA, became an alternative solution to rainfall data limitations. However, to be applied in hydrologic investigations, TRMM data require proper estimation and adjustment. The aim of this study was to evaluate the quality of TRMM rainfall data and its application in determining design flood and water availability. Dividing the data into several groups based on its magnitude and multiplying each unit with a correction coefficient are parts of the modification process. Subsequently, objective functions, including false alarm ratio (FAR), probability of detection (POD), and root mean square error (RMSE) were also applied. Rainfall-runoff modeling and design storm analysis at Delingan dam were used to study the TRMM correction performance. Based on the analysis, corrected TRMM showed considerable findings compared to ground station data. Model calibration and verification using corrected TRMM data provide satisfactory model parameters compared to ground station derivatives. The results also disclosed a closer fit of the corrected TRMM to catchment response translated from derived rainfall-runoff model parameters to ground station compared to control. Furthermore, design storm calculated from corrected TRMM reflects an improvement compared to uncorrected TRMM data.

The Use of Drop-Structures to Increase the Dissolved Oxygen Level along the Cibarani Channel Jonathan Wijaya; Doddi Yudianto; Finna Fitriana
Journal of the Civil Engineering Forum Vol. 8 No. 1 (January 2022)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

The Cikapundung river basin community uses the Cibarani channel as a drainage system and water source for fishing. However, the test result released on 9th November 2020 revealed that the channel’s water quality failed to reach the class II raw water standards due to various domestic waste discharges. This led to the performance of various studies to identify pollution control techniques by limiting the wastewater discharge and quality, controlling the intake discharge, and using baffles. The Cibarani channel has a drop-structure that can improve the water quality, though the effect has not been previously detailed. Therefore, this study was intended to comprehensively examine the effect of the drop-structure along the Cibarani channel to improve water quality conditions, specifically the Dissolved Oxygen (DO) parameter. This study employed the one-dimensional HEC-RAS software to simulate the hydrodynamic and water quality conditions along the Cibarani channel, and the drop-structure was modelled using two alternatives consisting of a vertical wall and a steep riverbed. Subsequently, the drop-structure fitted with a vertical wall gave a more plausible reaeration rate of 125 day-1 and Root Mean Square Error (RMSE) value of 0.50. The placement of a similar configuration before the first housing of the channel increased the DO concentrations by an average of 4.37 mg/L. This was followed by the modelling of another drop-structure after the first housing to increase the DO levels at the downstream part. Eventually, the combination of the two new drop-structures succeeded in increasing the DO concentrations along the Cibarani channel to 3.3 - 6.9 mg/L.

Numerical Simulation for One-Dimensional (1D) Wave Propagation by Solving the Shallow Water Equations using the Preissmann Implicit Scheme Prilla Lidyana; Bobby Minola Ginting; Doddi Yudianto
Journal of the Civil Engineering Forum Vol. 8 No. 2 (May 2022)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

This research simulated one-dimensional wave propagation by solving the shallow water equations using the Preissman implicit numerical scheme due to its ability to maintain simplicity and stability at a larger time step value. This numerical model was fundamentally developed to satisfy the shallow water condition, where the water depth or horizontal-length scale is much smaller than the free-surface disturbance wavelength or vertical-length scale, and to comprehensively test the accuracy of the model. Consequently, three different types of waves were considered and these include (1) tidal, (2) roll, and (3) solitary. In the first case, the model was proven to be robust and accurate due to its relatively-small errors for both water-surface elevation and velocity indicating that the Preismann scheme is suitable for longwave simulations. In the second case, it was fairly accurate in capturing the periodic permanent roll waves despite showing a higher water-surface elevation than the one observed and this discrepancy is due to the neglect of the turbulent Reynold stress in the model. Meanwhile, the last case showed remarkable discrepancies in the water-surface elevation because the dispersion effect is quite significant during the wave propagation. This indicates that the Preismann scheme underestimated the wave crest along with time when the dispersion term was neglected. All simulations were performed using the tridiagonal matrix algorithm, thereby eliminating the need for iterations for the solution of the Preismann scheme. The findings of this study are beneficial to the next generation of the Preissmann-scheme models which can be designed to include turbulence and dispersion terms.

Perbandingan Debit Limpasan Langsung antara Pendekatan Model Numerik dan Konvolusi Hidrograf Satuan Sintetis Cleon Christopher; Bobby Minola Ginting; Doddi Yudianto; Albert Wicaksono
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 28, Nomor 1, JULI 2022
Publisher : Department of Civil Engineering, Diponegoro University

This paper compares the results of direct runoff obtained by a numerical model of the shallow water equations (SWE) with the synthetic unit hydrograph (SUH) methods generally used in Indonesia. It is known that such SUH methods are still empirical, thus making it difficult for users to determine a representative method. Meanwhile, the hydrodynamic approach such as the SWE numerical model can achieve more accurate results in predicting the direct runoff compared to the SUH methods, because the model itself is derived mathematically based on the physical processes. The findings indicate that the direct runoff predicted using the SWE numerical model (HEC-RAS 5.0.7) produced more accurate results for the peak discharge with an average error of -0.07%, the peak time with an average error of 19.77%, and the shape of the hydrograph with the smallest Root Mean Square Error (RMSE) from all the cases tested. Therefore, it can be concluded that in the future the use of a hydrodynamic approach is highly recommended for the direct runoff prediction. This paper was also aimed to be used as a reference in the development of new, more accurate SUH method in the future.

STUDI PENGELOLAAN AIR HUJAN DALAM RANGKA PENGEMBANGAN TAMAN KONSERVASI DI KOTA SAWAHLUNTO, SUMATERA BARAT Steven Kent; Doddi Yudianto; Finna Fitriana
JURNAL SUMBER DAYA AIR Vol 18, No 2 (2022)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32679/jsda.v18i2.820

Taman Konservasi Kota Sawahlunto merupakan area yang dikembangkan untuk kegiatan perlindungan tanaman serta aktivitas pariwisata. Kota Sawahlunto awalnya dibangun sebagai kota pendukung kegiatan pertambangan batu bara, sehingga taman konservasi mempunyai beberapa cekungan yang dapat digunakan sebagai kolam parkir banjir. Cekungan-cekungan tersebut dapat digunakan sebagai sarana dalam memenuhi kebutuhan penyiraman tanaman. Penelitian ini bertujuan untuk mengkaji ketersediaan air serta analisis banjir pada kawasan yang hendak dibangun. Area taman konservasi dibagi menjadi tiga kawasan berdasarkan ke-empat lokasi kolam tampungan, yaitu kawasan Taman Kandih, kawasan taman bagian utara, dan kawasan taman bagian selatan. Dalam studi ini, akan dilakukan analisis hidrologi serta analisis hidraulik. Pada analisis hidrologi, simulasi kapasitas tampungan dilakukan untuk menggambarkan jumlah air yang dapat dipakai setiap bulannya. Pada analisis hidraulik, program SWMM digunakan untuk memodelkan air hujan sebagai limpasan permukaan, mengestimasi dimensi saluran rencana, dan volume banjir tampungan. Hasil simulasi kapasitas tampungan menunjukan kebutuhan air penyiraman tanaman dapat terpenuhi seluruhnya. Namun, volume kolam yang tersedia jauh lebih kecil dibandingkan volume air, sehingga kolam akan limpas sepanjang tahun. Hasil pemodelan SWMM menunjukan dimensi saluran rencana dari 0,2 m x 0,2 m hingga 0,5 m x 0,5 m, mampu mengalirkan debit banjir dengan periode ulang 2 tahun, dengan tinggi jagaan sebesar periode ulang lima tahun. Studi ini dapat digunakan sebagai pedoman dalam pengembangan kawasan konservasi dalam rangka pemanfaatan kembali potensi lahan bekas pertambangan. Kata Kunci: Perencanaan Drainase, Konservasi Air, Simulasi Tampungan, SWMM, Taman Konservasi Sawahlunto

A New Approach to Estimate the Potential Assets Loss due to Dam-Break Event in Indonesia Farrell Wiguna; Doddi Yudianto; Bobby Minola Ginting; Albert Wicaksono
Journal of Infrastructure & Facility Asset Management Vol 4, No 1 (2022): Journal of Infrastructure & Facility Asset Management
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/jifam.v4i1.14287

A dam break is a devastating natural catastrophe that can lead to huge losses. In general, the severity of a disaster can be determined by the amount of damage it causes. The greater the loss, the more severe the disaster and vice versa. However, determining the potential asset loss as a result of a disaster is a challenging task. So far, there is no method for calculating potential asset loss that is specifically made for dam-break disasters. Therefore, this study proposes a new approach in calculating the potential asset loss for a dam-break. In this study, the potential asset loss is calculated by considering four factors, namely the Potential Loss of Lives (PLOL), Potential Loss of Incomes (PLOI), Potential Loss of Houses Damage (PLOHD), and Potential Loss of Productive Land (PLOPL). In addition, the study calculates the potential asset loss of the Ketro Dam dam-break disaster. Based on the evaluation results, the PLOL might reach Rp. 26,419,715,661. PLOI might reach maximum value of Rp. 1,185,600,000. PLOHD might reach maximum value of Rp. 4,255,325,000. And lastly , PLOPL might reach maximum value of Rp. 25,375,080,780. Thus, the potential asset loss for the Ketro Dam dam-break disaster based on the analysis can reach Rp. 57,235,721,441 or USD 4,026,304.

THE ASSESSMENT OF CITARUM RIVER WATER QUALITY IN MAJALAYA DISTRICT, BANDUNG REGENCY Finna Fitriana; Doddi Yudianto; S Sanjaya; Andreas F V Roy; Yong Chan Seo
Rekayasa Sipil Vol. 17 No. 1 (2023): Rekayasa Sipil Vol. 17 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2023.017.01.6

Citarum River is one of the biggest rivers in Java Island and the primary source of Jakarta's water supply. Named the dirtiest river globally in 2013, the Indonesian government is committed to improving the Citarum River's water quality by 2025. However, the Majalaya District, the center of the textile industry area in the upstream part of the Citarum River, is indicated to have significantly contributed to the river pollution. Hence, it is essential to conduct a study to evaluate the water quality in the Citarum River, especially in the Majalaya District. The results showed a considerable decrease in water quality from upstream to downstream of the Citarum River in 2013-2021. Concurrently, it was also found that the factory effluent far exceeded the permissible limit.

Co-Authors Adhita Prasetya Adidarma, Wanny Albert Wicaksono Andreas F. V. Roy Angela Grace Ariberto Jonathan Bambang Adi Riyanto Bambang Adi Riyanto Bobby Minola Ginting Cleon Christopher Cleon Christopher Cristobal, Jose EKo Winar Irianto Farrell Wiguna Farrell Wiguna Finna Fitriana Fiona, Megan Fitriana, Finna Gao, Cheng Guan, Yiquing Hidayat, Ivana Nathalia Irianto, Eko Winar Jonathan Wijaya Kent, Steven Li, Qiaoling Li, Ren Polisar, Andrea Prasetya, Adhita Prasetya, Muhamad Demirel Prilla Lidyana Purwana, Okky Ahmad R. Wahyudi Triweko Rahmat Sudiana Robertus Wahyudi Triweko RW Triweko S Sanjaya S Sanjaya Sabu, Maria Kalista Hadia Sanjaya, S Sanjaya, Stephen Seo, Yong Chan Steven Kent Tandiono, Felix Theo Senjaya Theo Senjaya Tirza, Evely Triweko, Robertus Wahyudi Waluyo Hatmoko Wang, Qian Wanny K Adidarma Wanny K. Adidarma Wijaya, Obaja Triputera Willy Aulia Willy Willy Willy, Willy Wimordi, Calvin Xie Yuebo Xie Yuebo Xie Yuebo Yiqing, Guan Yiquing Guan Yong Chan Seo Yuebo, Xie Zhang Xiuju

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