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All Journal Civil Engineering Forum Teknik Sipil Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL International Conference on Engineering and Technology Development (ICETD) Jurnal Teknik Pengairan: Journal of Water Resources Engineering Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Jurnal Sains & Teknologi Lingkungan Journal of Geoscience, Engineering, Environment, and Technology Journal of the Civil Engineering Forum Civil Engineering Journal Rang Teknik Journal Jurnal Penelitian Enjiniring Fakultas Teknik Unhas Spektrum Sipil Jurnal Teknologi Berkelanjutan Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Journal of the Civil Engineering Forum
Radianta Triadmadja
Department Of Civil And Environmental Engineering, Universitas Gadjah Mada, Yogyakarta, INDONESIA
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Physics Transportation

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Cost Comparison of Drainage Channel Construction Considering Uncertainty of Rainfall Distribution Intan Supraba; Istiarto Istiarto; Radianta Triatmadja
Journal of the Civil Engineering Forum Vol. 5 No. 1 (January 2019)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1061.969 KB) | DOI: 10.22146/jcef.39121

Abstract

Rainfall data is the main parameter to design drainage channel. The accuracy of rainfall data determines the accuracy of peak discharge estimation that is used for designing the drainage channel for flood mitigation purpose. The previous study presented that uncertainty of peak discharge is associated with the uncertainty of rainfall distribution and uncertainty of water holding capacity. The main purpose of this study is for understanding the sensitivity of rainfall data by comparing the estimated cost to construct drainage channel based on different values of peak discharges using two different rainfall data set which one rainfall data is created by considering 10% uncertainty of rainfall distribution. This study area is located on Plampang, Sumbawa Besar, West Nusa Tenggara. Results showed that the total cost to construct drainage channel increased by 15% if considering 10% uncertainty of rainfall.
Design of a Facility for Tsunami Run up Generation to Study Tsunami and Seawall Interaction Warniyati Warniyati; Radianta Triatmadja; Nur Yuwono; David S. V. L Bangguna
Journal of the Civil Engineering Forum Vol. 5 No. 1 (January 2019)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (821.192 KB) | DOI: 10.22146/jcef.39130

Abstract

Experimental researches on the tsunami in the laboratory have been conducted using various methods. The use and techniques of tsunami wave generator depend on the objective of the tsunami observation to be conducted. When the objective is the scouring at the downstream of a seawall, the use of a short flume with control discharge seems to be appropriate. A valve with a mechanic controller was equipped to control the discharge from a reservoir into the flume. A numerical simulation of discharge into the flume and the overflow above the seawall was conducted to determine the dimension of the tsunami flume and its generator before construction. The experiments were conducted to simulate the hydrograph of tsunami overflow above the seawall model. The numerical hydrograph is found to be comparable with the experimental hydrograph. This indicates that the tsunami wave generator is capable of simulating tsunami hydrograph and ready for further use of simulations.
Sustaining Water-Related Heritage Infrastructures as Part of An Integrated Water Resource Management Program Radianta Triatmadja; Djoko Legono; Budi Wignyosukarto; Fatchan Nurrochmad; Sunjoto Sunjoto
Journal of the Civil Engineering Forum Vol. 6 No. 2 (May 2020)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.991 KB) | DOI: 10.22146/jcef.51511

Abstract

The history of the water resources development in the world is generally inspired by the physical, climate and socioenvironment conditions such as geographical, culture and civilization at the local level. For many years, humans have spent tremendous efforts and time improving the quality of life through adequate water utilization. This research, therefore, aims to analyze the ancient water-related infrastructures as cultural heritages in creating a functional and adequate design. Data were obtained from the Mataram Canal in Yogyakarta Province which was selected due to the success story and various benefits associated with the Indonesian history of water resources in Central Java provinces. Today, some places along the canal have become tourist destinations, and it is more popular in Yogyakarta due to its architectural history. However, the diversification of water utilization in fishery ponds along the canal and the shift in land utilization from rice field to housings, and government buildings may undermine the function of the canal. The factual condition associated with the periodic decrease in irrigation command does not make the Mataram Canal useless. Therefore, efforts to maintain its function through restoration, and revitalization, can enhance water supply for irrigation and other purposes such as fish ponds and, pollutant dilution. The Strength-Weakness-Opportunity-Threat (SWOT) method with some key performance indicators was adopted to access the necessity of the sustainability program of the Mataram Canal as the heritage infrastructure. Some key performance indicators related to Integrated Water Resources Management (IWRM) program in Indonesia were introduced and utilized to prioritize the necessary actions. The results showed that the SWOT analysis promotes various actions to support the IWRM-related program of Mataram Canal. Furthermore, the implementation of the promoted actions would contribute to the longer sustainability of the Mataram Canal.
EVALUASI SISTEM DRAINASE UNDERPASS YOGYAKARTA INTERNATIONAL AIRPORT (YIA) Yudhi Ardiansyah; Iman Satyarno; Radianta Triatmadja; Intan Supraba
Rang Teknik Journal Vol 5, No 2 (2022): Vol. 5 No. 2 Juni 2022
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (638.573 KB) | DOI: 10.31869/rtj.v5i2.3074

Abstract

Evaluasi terhadap sistem drainase underpass YIA perlu dilakukan untuk mengetahui kemampuan sistem drainase yang terdiri atas saluran samping, bak penampung dan pompa dalam mencegah terjadinya genangan. Evaluasi saluran samping dilakukan dengan membandingkan debit maksimum pada kala ulang 2, 5, 10, 25, 50 dan 100 tahun dengan kapasitas saluran terbangun. Adapun evaluasi bak penampung dan pompa dilakukan dengan melakukan simulasi routing volume akumulasi air yang masuk pada durasi hujan (td) sama dengan waktu konsentrasi (tc), 2tc, 3tc dan durasi hujan lebat dominan. Hasil evaluasi menunjukkan dimensi saluran samping yang terpasang mampu menanggulangi debit maksimum limpasan sampai dengan kala ulang 100 tahun. Evaluasi terhadap bak penampung menunjukkan untuk td=tc,td=2tc dan td=3tc kondisi  sump pit akan aman apabila minimal 2 unit pompa dioperasikan secara bersamaan. Sedangkan untuk durasi lebih ekstrem (durasi hujan lebat dominan) 2 unit pompa hanya mampu mengatasi overcapacity akibat hujan dengan kala ulang 2 sampai dengan 10 tahun. Hasil evaluasi pada kinerja pompa menunjukkan faktor keamanan pompa menunjukkan nilai < 1 apabila yang beroperasi hanya 1 unit pompa sedangkan untuk kondisi 2 unit pompa beroperasi bersamaan nilai faktor keamaanan menunjukkan angka di atas  1 (aman) untuk durasi hujan singkat. Pada hujan dengan durasi ekstrem, faktor keamanan menunjukkan angka aman untuk hujan dengan kala ulang rendah
Evaluasi Pendangkalan Pelabuhan Penyeberangan Bira Sulawesi Selatan Dan Usaha Untuk Menanganinya Rezky Andriady; Nur Yuwono; Radianta Triatmadja
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 13 No. 2 (2022)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2022.013.02.08

Abstract

Pelabuhan Penyeberangan Bira mengalami pendangkalan di areal mulut kolam pelabuhan yang menyebabkan kandasnya kapal apabila air sedang surut, sehingga aktivitas lalu lintas kapal menjadi terganggu dan menyebabnya kerugian akibat turunnya kinerja operasional pada pelabuhan. Tujuan penelitian ini untuk menyelidiki penyebab pendangkalan yang terbentuk di kolam labuh dan memberikan solusi penanganan yang dapat diterapkan. Metode yang digunakan yaitu dengan menganalisis karakteristik arus, perubahan elevasi dasar kolam dengan data hasil pengukuran batimetri, dan melakukan pengolahan data pasang surut menggunakan metode least square. Hasil batimetri menunjukkan peningkatan elevasi dasar pada areal mulut kolam pelabuhan setinggi 3 m dengan posisi letak terjadinya peningkatan elevasi memiliki ciri transpor sedimen menyusur pantai. Saat kondisi pasang kecepatan aliran arus berkisar 0,0149–0,0212 m/s dengan arah aliran selatan-utara, sedangkan pada kondisi surut kecepatan aliran berkisar 0,0147–0,0178 m/s dengan arah aliran utara-selatan. Sampel sedimen berupa pasir dengan persentase 70,02%-86,74%. Bangunan pelindung yang dipilih adalah detached breakwater sebanyak dua buah dengan mempertimbangkan pembentukan tombolo. Bangunan pemecah gelombang direncanakan dengan panjang 50 m, lebar gap 25 m, dan tinggi mercu 4,2 m dari muka laut dengan kala ulang 25 tahun.
Aliran Pada Lubang Gerusan: Model Fisik dan Model Numerik Marcio Tahalele; Radianta Triatmadja; Nur Yuwono; Warniyati
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 13 No. 2 (2022)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2022.013.02.11

Abstract

Kejadian tsunami Samudra Hindia tahun 2004 dan kejadian tsunami yang melanda Jepang tahun 2011 mengakibatkan kerusakan serta kehancuran yang sangat besar dari segi sarana, prasarana, lingkungan serta memakan korban jiwa. Mekanisme gerusan yang dihasilkan oleh tsunami berbeda dari mekanisme gerusan yang terjadi pada jembatan, dermaga dan bendung. Penelitian ini menjelaskan tentang proses terjadinya gerusan dan pola aliran pada saat gerusan mencapai kondisi kesetimbangan yang diakibatkan aliran jet air. Penelitian ini membandingkan hasil model fisik (eksperimen) dan model numerik (simulasi SPH). Hasil penelitian memperlihatkan bahwa kedalaman gerusan (ds) dipengaruhi oleh faktor pengaliran. Proses pembentukan lubang gerusan mengalami empat fase, yaitu fase awal, fase pengembangan, fase stabilisasi dan fase ekuilibrium. Validasi dilakukan untuk membandingkan hasil simulasi SPH dan data eksperimen di laboratorium terkait pola aliran dan debit outlet (QOut). Pola aliran pada simulasi SPH merepresentasikan pola aliran yang terjadi pada eksperimen di laboratorium. Hasil antara eksperimen dan simulasi SPH untuk QOut memberikan selisih sebesar 4,69% - 8,48%. Perbedaan hasil antara eksperimen dan simulasi SPH disebabkan oleh faktor gesekan batas, kondisi batas, dan penggambaran bentuk lubang gerusan.
KAJIAN OPTIMALISASI DISTRIBUSI JARINGAN AIR BERSIH (STUDI KASUS PDAM DELTA TIRTA SIDOARJO UNIT IPA KRIAN): Study on Water Distribution Network Optimization (A Case Study in the Sidoarjo Drinking Water Company of the Subdistric of Krian) Ratnanik Ratnanik; Radianta Triatmadja; Budi Kamulyan
Spektrum Sipil Vol 5 No 1 (2018): SPEKTRUM SIPIL
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/spektrum.v5i1.130

Abstract

Hasil simulasi WaterNet jaringan eksisting dengan aliran berubah diketahui bahwa kinerja sistem jaringan tidak optimal yaitu masih terdapat aliran laminer pada pipa sebanyak 26 pipa dan sisa tekanan pada simpul pelayanan rendah yaitu 9,88 mH2O, seperti pada lokasi desa Sirapan, Kemangsen dan Jagalan. Optimalisasi jaringan eksisting dilakukan dengan metode memperbesar pipa yang berdiameter kecil dari node sub Jagalan ke node pelanggan, dan membangun tangki baru serta menaikkan elevasi tangki pada daerah pelayanan Perumtas III dimana pompa 2(dua) beroperasi. Pompa 2 yang beroperasi pada daerah pelayanan Perumtas III diatur debit dan headnya sesuai dengan daya tampung tangki baru. Setelah diadakan optimalisasi hasilnya lebih baik apabila dibandingkan dengan kondisi eksisting karena adanya penghematan operasional pompa rata-rata selama 14 jam dibanding dengan kondisi eksisting waktu operasional pompa 24 jam. Tekanan sisa pada node setelah optimalisasi menjadi lebih baik karena terjadi peningkatan tekanan di semua node meskipun sedikit yaitu 11.53 mH2O.
Study of Flow Rate Effect on Horizontal Flow Concrete Sand Filter Filtration Performance Parsada, Laksmana Angga; Kamulyan, Budi; Triatmadja, Radianta
Journal of the Civil Engineering Forum Vol. 10 No. 1 (January 2024)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.6782

Abstract

The need for clean water during the pandemic is significantly increasing due to high public awareness of adopting a clean and healthy lifestyle (PHBS), necessitating more water treatment. Conventional methods are used for water treatment, including coagulation-flocculation system, rapid sand filter, and disinfection. However, these methods have limitations such as reduced capacity and sand filter efficiency, leading to increased backwash costs due to the need for sand replacement caused by particle stratification. In response to these challenges, an innovative method to water treatment is the use of concrete sand filter (CSF). Previous studies predominantly focused on downflow filtration, but there has been limited analysis of horizontal flow. Therefore, this study aimed to assess filtration and backwash effectiveness of CSF with horizontal flow, specifically focusing on the capacity performance in treating water with varying levels of turbidity. Filtration experiment was carried out using simulated water at turbidity of 125 NTU based on the Mataram Channel Turbidity with variations of 0.2, 0.5, 1.0, 5.0, and 10.0 m hour-1, as well as backwash at flow rate of 40.91 m hour-1 for 3 minutes. The variables measured during filtration process included head losses and turbidity at the inlet and outlet of CSF. The results showed that the capacity performance during filtration process was directly proportional to flow rate. Meanwhile, the effectiveness of concrete filter was inversely proportional to flow rate. At initial turbidity <617 NTU, the 3 minutes backwash process obtained lower final turbidity compared to the raw water used, which was 5.19 NTU. Meanwhile, at turbidity 617 NTU, the final turbidity was still high, reaching approximately 14.6–26.4 NTU.
Application of Smoothed Particle Hydrodynamics Method for Tsunami Force Modeling on Building with Openings Anggita, Putra; Triatmadja, Radianta; Yuwono, Nur
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 19 No. 2 (2023): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v19i2.54249

Abstract

Smoothed Particle Hydrodynamics (SPH) serves as a numerical technique extensively employed for simulating free surface flow. The computational intricacy of the SPH method arises from the numerous computations of a particle's properties, derived from interactions with surrounding particles. To address this complexity, experts developed DualSPHysics. This study employs the SPH method, specifically the DualSPHysics application, for tsunami modeling. To accurately represent tsunami characteristics, precise numerical parameters are essential for numerical modeling. This research provides valuable insights into optimizing numerical parameters for accurate SPH simulations. Therefore, the research aims to identify the exact values of crucial parameters in DualSPHysics model. Validation of numerical calculations involves comparing the tsunami forces, as simulated by DualSPHysics, with secondary data obtained from physical experiments results. The findings highlight the significance of particle size (dp) as a crucial numerical parameter in DualSPHysics modeling. A smaller particle size contributes to model's accuracy. The determination of the particle size must account for model's shortest characteristic (s). According to simulations those have been carried out, it is recommended to set the maximum limit value of dp/s at 1/3.67 to achieve precise calculation. Furthermore, the DualSPHysics simulation demonstrates a reduction in force due to the opening configuration (n).
A Review of Recent Developments on Modeling Low Impact Development (LID) Technique: Tinjauan Terhadap Perkembangan Terkini dalam Pemodelan Teknik Low Impact Development (LID) Al Amin, Muhammad Baitullah; Sujono, Joko; Triatmadja, Radianta
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 13 No. 1 (2024): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v13i1.320

Abstract

Urban areas are more susceptible to flooding and water body contamination due to the detrimental effects of urbanization. As a result, a sustainable urban drainage system, also known as low impact development (LID) technique, is required. Although this technique can be extensively applied, the planning and design processes are multi-dimensional, multi-variable, and site-specific, which must consider various local conditions and factors. Consequently, these processes can be very complicated and time-consuming for professionals, necessitating support from computer modeling. This study intends to thoroughly explore the idea of LID modeling, various available computer models, and other tools for its optimization and decision-making processes. The most recent trustworthy journal publications that addressed the subjects under discussion were reviewed. This paper used the descriptive and comparative approaches as the analytical methods. According to the findings of the review, Storm Water Management Model (SWMM) is the computer model in LID modeling that is most frequently employed. This model is a fundamental package for dynamic urban rainfall-runoff modeling, and it has the benefits of being lightweight, simple to use, and an intuitive user interface. Besides, this model is public domain (free to use), open source, and interoperable with many hydro modeling applications. A specific LID editor module is also included in this model for modeling different LID units. To acquire the best LID planning and design from multiple criteria and alternatives, it is also necessary to use metaheuristic algorithms as an optimization model and a multi-criteria decision-making (MCDM) model in addition to the rainfall-runoff model. The authors believe combining the hydrologic and hydraulics models integrated with geographical information systems (GIS), metaheuristic algorithms, and MCDM is the most comprehensive and appropriate method for LID modeling in urban watersheds.
Co-Authors . Nizam Achjat Dwiatno Adam Pamudji Rahardjo Al Amin, Muhammad Baitullah Anggita, Putra Any Nurhasanah Anzhari Syahmi Assidiq, Fuad M. Baeda, Achmad Y. Bambang Triatmodjo Benazir Benazir Budi Kamulyan Budi Kamulyan Budi Wignyosukarto Darmanto Darmanto David S. V. L Bangguna Djoko Legono Dyah Dhani M Dyah Dhani M. Ekha Yogafanny, Ekha Fatchan Nurrochmad Hasdinar Umar Iman Satyarno INTAN SUPRABA Intan Supraba, Intan Istiarto Istiarto Johan Syafri Mahathir A Joko Sujono Judi K. Nasjono Lenni Kartika Indah Mahathir A, Johan Syafri Marcio Tahalele Ningtyas, Nadya Nur Nizam Mr., Nizam Nizam Nizam Nur Yuwono Nur Yuwono Nur Yuwono Nur Yuwono Nur Yuwono Nurul Purnama Sari Oki Setyandito Oki Setyandito, Oki Parsada, Laksmana Angga Rada, Dwi Cahya Raelly Harza W Raelly Harza W. Ratnanik Ratnanik Rezky Andriady Sunjoto Sunjoto Sunjoto Sunjoto Warniyati Warniyati Warniyati Warniyati, Warniyati Yudhi Ardiansyah