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All Journal Jurnal Ilmiah Elektronik Infrastruktur Teknik Sipil Jurnal Teknik Sipil Fondasi: Jurnal Teknik Sipil Jurnal Aplikasi Teknik Sipil Civil Engineering For Community Development
Ngakan Putu Purnaditya
Universitas Sultan Ageng Tirtayasa
Civil Engineering, Building, Construction & Architecture Transportation

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Effect of Sluice Gate Opening Height on Spillway on Flow Characteristics (Physical Model) Adianti, Feni; Priyambodho, Bambang Adhi; Wigati, Restu; Purnaditya, Ngakan Putu; Subekti, Subekti
Jurnal Fondasi Vol 13, No 1 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i1.24865

Abstract

The sluice gate is a measuring structure that controls the upstream discharge and water level. The varying height of the sluice gate opening will cause the water level to vary both upstream and downstream. The difference in water level upstream and downstream can potentially cause scouring downstream of the gate. This study aimed to determine the effect of the height of the sluice gate opening on the flow characteristics. This study used a research method in the form of a physical model on an open channel (flume) at the Integrated Laboratory of Sultan Ageng Tirtayasa University Sindangsari. The stages of this research included pitot pipe calibration and research of flow characteristics on the height of the gate opening with variations in the height of the sluice opening (9, 10, 11, 12, 13 cm). The sluice model used is made of wooden boards with the dimensions of the door width being 1/3 of the width of the channel. The results showed that the higher the sluice opening (a), the lower the upstream water level (H) and the greater the downstream water level (Y). While the upstream flow velocity (V0) was greater and the downstream flow velocity (V1) was getting smaller so were the upstream Froude numbers (Frupstream) and downstream Froude numbers (Frdownstream). The upstream flow is classified as sub-critical flow (Fr<1), while the downstream flow is classified as super-critical flow (Fr>1).
The Effect of Groundsill Height on Bridge Pillar Flow Characteristics (Physical Model) Raissa, Azarine Vashti Alpha; Priyambodho, Bambang Adhi; Purnaditya, Ngakan Putu; Wigati, Restu; Subekti, Subekti
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.22047

Abstract

Groundsill is one of the categories of wide thresholds that are generally built transversely in the river downstream of a building threatened with damage caused by scouring such as bridge pillars. In addition to construction factors, local scour around the pillars can be another factor causing the collapse of the bridge structure. The purpose of this study was to determine the effect of groundsill height on flow characteristics. Physical model research on open channels (flume) was carried out at the Integrated Laboratory of Sultan Ageng Tirtayasa University, Sindangsari Campus. The groundsill model is modeled with dimensions of 8 cm peak width, 30 cm length, and groundsill height variations (1, 2, 3, 4, and 5 cm) made of wood while the bridge pillar model is modeled with a diameter of 1 inch made of PVC pipe which is filled with concrete. The results showed that the higher the groundsill (p), the higher the water level upstream (H1) is greater and downstream (H2) is smaller, while the flow speed upstream (V1) is smaller and downstream (V2) is greater so that the Froude number downstream is greater than upstream. The higher the groundsill (p), the Froude number downstream will increase (supercritical flow) while upstream will decrease (subcritical flow). 
Prediction of Snyder Synthetic Unit Hydrograph Coefficient for Cidurian Watershed Zulfa, Graciela Febriyanti; Purnaditya, Ngakan Putu; Wigati, Restu; Subekti, Subekti; Priyambodho, Bambang Adhi
Jurnal Fondasi Vol 12, No 2 (2023)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v12i2.22046

Abstract

Watershed management is starting with knowing and recording the problems that exist in the watershed. Condition of the watershed that continues to deteriorate can trigger natural disasters such as flash floods that occurred in the Cidurian Watershed. Hydrological design, especially for short-term phenomena runs generates the synthetic unit hydrograph. Snyder synthetic unit hydrograph is the common synthetic hydrograph that widely used on hydrological analysis. Generally, on the snyder synthetic unit hydrograph, the coefficient value (peak coefficient, time coefficient, CW75 and CW50) is only based on estimates or previous research so that the calculation of discharge is less accurate and needs further research. This study discusses the prediction of the value of the Peak Coefficient (Cp), Time Coefficient (Ct), CW75 and CW50 in the Cidurian Watershed using the Snyder Synthetic Unit Hydrograph (HSS) and get a calculation graph between the Polynomial and Collins Unit Hydrographs against the Snyder Synthetic Unit Hydrograph (HSS) in the Cidurian Watershed with rainfall data processing using the Thiessen Polygon, Mononobe, and Alternating Block Method (ABM). The results showed that the value of Peak Coefficient (Cp) = 0.59, Coefficient of Time (Ct) = 0.09, CW75 = 1.22, CW50 = 2.14, with Peak Discharge (Qp) Collins Measured Unit Hydrograph 19th hour = 1.589 m3/s, and Peak Discharge (Qp) Snyder Synthetic Unit Hydrograph 11th hour, 1 = 1.59 m3/s.
Analisis Kelayakan Teknis Infrastruktur Cagar Budaya Nasional Bendung Lama Pamarayan di Serang-Banten Syahid, Mushab Abdu Asy; Subekti, Subekti; Bethary, Rindu Twidi; Budiman, Arief; Purnaditya, Ngakan Putu; Priyambodho, Bambang Adhi; Pradana, Muhammad Fakhruriza; Intari, Dwi Esti; Asyiah, Siti
Civil Engineering for Community Development (CECD) Vol 3, No 2 (2024): Edisi Oktober 2024
Publisher : Department of Civil Engineering Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/cecd.v3i2.29280

Abstract

Artikel ini merefleksikan dinamika pelestarian infrastruktur bersejarah Bendung Lama Pamarayan yang tengah dalam proses pemeringkatan Struktur Cagar Budaya nasional. Analisis kelayakan teknis dalam kajian delienasi secara khusus bertujuan mengidentifikasi objek infrastruktur Cagar Budaya untuk persiapan pekerjaan pemugaran. Implementasi konsep studi kelayakan (feasibility study) dalam manajemen rekayasa konstruksi dan tinjauan terhadap elemen-elemen atribut fisik Bendung Lama Pamarayan yang melibatkan unsur akademisi dan pakar dalam membantu aspek teknisnya. Rangkaian kegiatan pengabdian masyarakat ini mencakup observasi via kunjungan lapangan, studi arsip sejarah, serta identifikasi dan analisis kondisi eksisting objek. Diseminasi hasil kajian dilakukan melalui diskusi kelompok terpumpun yang melibatkan pemangku kepentingan di tingkat birokrasi, pelestari, akademisi, dan masyarakat Desa Pamarayan dan Desa Penyabrangan untuk memastikan pendekatan partisipatoris dalam revitalisasi pusaka Bendung Lama Pamarayan di masa depan. 
MODELING OF WATER SEEPAGE AT SINDANG HEULA DAM Kusumaningrum, Winda; Purnaditya, Ngakan Putu; Fathonah, Woelandari; Priyambodho, Bambang Adhi; Subekti, Subekti; Nabila, Firyaal
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.29289

Abstract

A embankment dam is a dam built by stockpiling materials such as stones, gravel, sand, and soil on a certain composition with the function of carrying or lifting the water surface contained in the reservoir [1]. One of the structural safety of a embankment dam is against water seepage. Water seepage that occurs on the slope body during flooding can affect the decrease in slope stability, where the seepage will cause piping symptoms [2]. This study aims to determine the seepage discharge value that occurs in the dam body. The object of this study was Sindang Heula embankment dam in Banten Province. The method used is to conduct an analysis using GeoStudio software with the SEEP/W feature for seepage discharge. Simulation run in two scenarios as steady state condition and transient. Both scenario also run at least on three reservoir water level conditions. They are water level during flood, normal water level and half of full water level. Steady state condition gave seepage flux about 3.773×10-6 m3/sec/m2 as maximum value. In another hand, 30 days transient simulation gave maximum value about 8.7188×10-4 m3/sec/m2 and it occurred in small reference time after initial run. This study infomed that SEEP/W has capability to simulate water flux through porous media of embankment dam.
Evaluation of PDIR-Now Satellite Rainfall Data on Observational Rainfall Data (Case Study: Taktakan District, Serang City, Banten) Lutfiah, Qonita; Purnaditya, Ngakan Putu; Priyambodho, Bambang Adhi; Wigati, Restu; Subekti, Subekti
Jurnal Fondasi Vol 13, No 2 (2024)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fondasi.v13i2.28721

Abstract

Rainfall data is one of the important initial inputs in hydrological analysis, but it is often incomplete due to various constraints such as damage to measuring instruments or uneven distribution of measurement stations. To overcome this problem, weather observation with satellites can be used. However, before using satellite rainfall data, it is necessary to test its suitability with field data to ensure its accuracy. This study aims to evaluate the PDIR-Now satellite rainfall data on observation rainfall data in Serang City to determine the feasibility of using satellite rainfall data and the influence of rain periods (daily (>50mm/day), 15 days, and monthly) on the reliability of satellite data. The analysis method in this study uses statistical analysis in the form of regression analysis at the calibration stage and RMSE, NSE, and Pearson (r) correlation coefficient at the validation stage. Based on the results of the study , it is known that the PDIR-Now satellite can estimate the best rainfall in the monthly period.
Alignment Analysis of WS 3Ci River Basin Management with Law No. 17/2019 and Integrated Water Resources Management Fathin, Yumi Amiroh; Purnaditya, Ngakan Putu; Subekti, Subekti
Jurnal Teknik Sipil Vol 25, No 1 (2025): Vol 25, No 1 (2025): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i1.85449

Abstract

The Banten region relies on water resources from the Cidanau-Ciujung-Cidurian Watershed but faces problems such as flooding, drought, poor coordination, mangrove forest populations that are decreasing each year, and moderately polluted river water quality. The government issued a decree to the Minister of Public Works and Housing No. 548/KPTS/M/2018 on water resources management plans to address these issues. To overcome these problems. This research analyzes the alignment of the Cidanau-Ciujung-Cidurian River Basin Water Resources Management Plan with Law No. 17 of 2019 and IWRM. The method used is a comparative analysis of the water resources management plan of the Cidanau Ciujung Cidurian River Basin with Law No. 17 of 2019 and IWRM. Based on the study's results, it was found that the WS 3Ci Water Resources Management Plan is mostly in line with the Law. However, there are misalignments, namely, not listing endangered plant and animal species. At the same time, about IWRM, there are misalignments with the 4 Dimensions of water resources management, namely fossil water, green water, and water resources sustainability aspects of global scale economic sustainability.
Flood Analysis of the Kedung Ingas River and Pabean River the Cilegon City Waita, Stanley Reynaldi Frits Sirway; Priyambodho, Bambang Adhi; Purnaditya, Ngakan Putu; Fathonah, Woelandari; Subekti, Subekti; Nabila, Firyaal
Jurnal Fondasi Vol 14, No 1 (2025)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v14i1.32284

Abstract

The Kedung Ingas River and Pabean River the Cilegon City often flood every year. It has an impact on losses and disruptions to public facilities and settlements such as highways, Cilegon Regional Hospital, Metro housing and residential areas located close to the river. The purpose of this study is to determine the amount of design discharge at 10, 25 and 50 years return period. The methods used to calculate the design flood discharge are Rational, Der Weduwen, and HSS Nakayasu. Based on the results of the study, the design flood discharge of the Kedung Ingas River and the Pabean River with Q10 = 121.25 m3/s, Q25 = 131.01 m3/s, and Q50 = 138.79 m3/s. The design flood discharge value used is the calculation value using the selected method, namely Nakayasu Synthetic Unit Hydrograph.
Analysis of Flood Discharge at Catchment Area of West Jurang Mangu Reservoir using HEC-HMS Purnaditya, Ngakan Putu; Jannah, Dahlia Raudothul; Subekti, Subekti; Priyambodho, Bambang Adhi; Wigati, Restu
Jurnal Fondasi Vol 14, No 1 (2025)
Publisher : JURUSAN TEKNIK SIPIL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fondasi.v14i1.32274

Abstract

High rainfall in Indonesia is one of the causes of flooding, especially in vulnerable areas such as watersheds. In addition to high rainfall, an increase in population and land use that is not in accordance with its function can worsen watershed conditions and cause an increase in flood risk. South Tangerang City is one of the areas prone to flooding, so flood control efforts are carried out such as widening rivers, raising embankments, and building retention ponds. Around the catchment area of the West Jurang Mangu Reservoir, flooding with a height of 50 60 cm still occurs, so further research was carried out at that location. In this study, the research method used QGIS to determine the catchment area, followed by hydrological analysis of the planned flood discharge using the HSS Synder method and modeling with HEC-HMS software. The results showed that the planned flood discharge using HSS Synder at return periods of 2, 5, 10, 25, and 50 years was 2.55 m3/s; 3.599 m3/s; 4.261 m3/s; 5.033 m3/s; and 5.718 m3/s.
Co-Authors Adianti, Feni Aditya Widiastomo Asyiah, Siti Bambang Adhi Priyambodho Bethary, Rindu Twidi Budiman, Arief Dwi Esti Intari Dwinanti Rika Marthanty Elfina Rozita Fahrus Sabri Fathin, Yumi Amiroh Fathonah, Woelandari Fathonah, Woelandari Graciela Febriyanti Zulfa I Gusti Bagus Sila Dharma I Gusti Ngurah Putra Dirgayusa Intan Afiah Rakhmatika Intari, Dwi Esti Jannah, Dahlia Raudothul Kusumaningrum, Winda Lutfiah, Qonita Maulana, Yovi Nabila, Firyaal Nabila, Firyaal Nopia Anggini Pradana, Muhammad Fakhruriza Priyambodho, Bambang Adhi Raissa, Azarine Vashti Alpha Restu Wigati, Restu Rifky Ujianto Rindu Twidi Bethary, Rindu Twidi Saharani, Reza Nurul Sarrobi Kamal Siti Asyiah Soedarsono Soedarsono Subekti Subekti Subekti Subekti Subekti, Subekti Syahid, Mushab Abdu Asy Waita, Stanley Reynaldi Frits Sirway Zulfa, Graciela Febriyanti