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All Journal Jurnal Teknik Sipil dan Perencanaan Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Syntax Literate: Jurnal Ilmiah Indonesia Journal of Green Science and Technology Jurnal Sosial dan Teknologi Journal Of World Science Jurnal Locus Penelitian dan Pengabdian INJURITY: Journal of Interdisciplinary Studies Indonesian Journal of Advanced Research (IJAR) Jurnal Teknik Indonesia Jurnal Civil Engineering Study Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan International Journal of Mechanical, Electrical and Civil Engineering Journal of Green Science and Technology
Ohan Farhan
Fakultas Teknik Universitas Swadaya Gunung Jati Cirebon Jawa Barat, Indonesia
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Public Health Social Sciences Transportation Other

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Analysis of Cipelang River Strorage Capacity Regency Sumedang tribhuwana, awliya; Farhan, Ohan
Journal of Green Science and Technology Vol 8 No 2 (2024): Journal of Green Science and Technology Vol.8 No.2 September 2024
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v8i2.9578

Abstract

Rainy season flooding: Ujung Jaya Regency experiences flooding almost every year, this annual flood phenomenon causes material losses. The research aims to analyze the capacity of the Cipelang River which is located in Sumedang Regency. The Cipelang River is part of the Cimanuk Watershed (DAS) with an area of ​​around 130.70 km², which has several tributaries such as Ciandana, Cicacaban, and Cipanassaat. The methods used in this research include collecting hydrological data, topographic analysis, and evaluating land use around the river. Rainfall and river flow data were taken from the nearest meteorological station to determine water storage potential. Results of analysis of existing river storage capacity and flood discharge. The maximum capacity of the Cipelang river is 409,002 m3/s. Nakayasu HSS method planned discharge using river watershed discharge occurs in the 100 year anniversary period. However, time periods of 2,5,10,25,50 years are considered safe. The results of comparing the planned discharge of the Hasper method with the discharge of the river catchment did not occur. So the most suitable method to use is the hasper method, land use which is dominated by irrigated rice fields and gardens also contributes to water management in this watershed. It is hoped that this research can provide recommendations for better water resource management and flood risk mitigation in the area. These findings are important to support sustainable infrastructure development and maintain ecosystem balance in the Sumedang Regency area.  Keywords: Rain , River, Discharge, Capacity, Flood
ANALISIS MANAJEMEN KONTRUKSI PROYEK PEMBANGUNAN GEDUNG PASCASARJANA UNIVERSITAS PENDIDIKAN INDONESIA (UPI) BANDUNG Gunawan, Andi; Farhan, Ohan; Rohman, Fathur
Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan Vol 12 No 1 (2024): Jurnal Konstruksi dan Infrastruktur Vol 12 No.1 : April 2024
Publisher : Civil Engineering Department, Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jki.v12i1.9115

Abstract

Construction management is an effort to use limited resources efficiently, effectively and on time in completing a predetermined / planned project. There are 3 activities from the basic functions of project management, namely planning, implementing and controlling. Of the three activities, control is carried out on resources in a project which includes manpower, equipment (machine), materials (material), money (money) and methods (methods). The research aims to analyze the construction management of the construction project of the postgraduate building of the Indonesian University of Education (UPI) Bandung, planning the cost budget and scheduling using the Barchart, S Curve and Critical Path Method (CPM) methods. The results of this study show that the Budget Plan (RAB) obtained for the Postgraduate Building Construction Project of the University of Education of Indosesia (UPI) Bandung amounted to Rp 45,416,418,967, then the results of scheduling using barcharts and the S curve that this project took 32 weeks to complete the structural work, while the results of the Critical Path Method (CPM) analysis to complete this project took 224 days. Keyword: Construction Management, Cost Budget Plan, S Curve, Critical Path Method.
Pemodelan Banjir di Wilayah Pedesaan Kabupaten Cirebon dengan Menggunakan HEC-RAS dan ArcGIS Farhan, Ohan; Hariani, Mira Lestira; Priyono, Cecep
Jurnal Konstruksi dan Infrastruktur : Teknik Sipil dan Perencanaan Vol 12 No 2 (2024): Jurnal Konstruksi dan Infrastruktur Vol 12 No.2 : Oktober 2024
Publisher : Civil Engineering Department, Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jki.v12i2.9933

Abstract

Flood modeling is crucial as part of disaster mitigation efforts in a region. This study aims to determine the extent and depth of flood inundation using ArcGIS 10.8 and analyze flood modeling using HEC-RAS 6.3.1 to predict potential flooding in rural areas of Cirebon District. Rainfall analysis was conducted using the Thiessen Polygon method based on ten years of maximum rainfall data, while flood analysis was carried out using the Nakayasu Synthetic Unit Hydrograph (HSS) method. The study results indicate that rice fields were the most affected area, covering approximately 45.95 hectares with an inundation depth ranging from 1 to 2 meters. To mitigate flood impacts, an increase in embankment height by 1.5 meters is recommended at several critical points. Keywords : Flood mitigation, Flood Modelling, HEC-RAS, ArcGIS, HSS Nakayasu
Feasibility Analysis of Regular Gas Station Development Projects in Relation to the Economy Rediansyah, Trisna Ferdy; Andono, Agung Ari; Farhan, Ohan; Anwar, Saihul
Indonesian Journal of Advanced Research Vol. 4 No. 11 (2025): November 2025
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v4i11.15736

Abstract

This study analyzes the feasibility of the construction of regular petrol stations in Sepaku District, North Penajam Paser Regency, East Kalimantan. The need for development arises due to the increase in the number of vehicles that is not proportional to the availability of fuel infrastructure. A quantitative approach is used through fuel demand analysis, RAB preparation, and economic evaluation with NPV, BCR, and Payback Period. The results show that Semoi Dua Village is strategic because it is on the path to IKN with high population growth. Fuel needs are estimated at ±311,000 liters per week. The project is economically feasible with a positive NPV of IDR 15 billion, a BCR of 1.3, and a payback period of four years. Petrol stations are considered prospective operationally and economically.
Construction Management Analysis of the Cimunjul Bridge Development on the Bogor – Ciawi – Sukabumi Toll Road (Bocimi) Section 3 Ade Yusrizal Ula; Fujiyanto Fujiyanto; M. Hildan Rafsanjani; Heri Mulyono; Ohan Farhan
Interdiciplinary Journal and Hummanity (INJURITY) Vol. 5 No. 1 (2026): Injurity: Interdiciplinary Journal and Humanity
Publisher : Pusat Publikasi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58631/injurity.v5i1.1514

Abstract

This study analyzes time and cost management in the construction of the Cimunjul Bridge on the Bogor-Ciawi-Sukabumi (Bocimi) Toll Road Section 3 with the dimensions of the bridge, which is 254,663 meters long and 32.4 meters wide. The purpose of building the Cimunjul bridge on the Bocimi Toll Road section 3 is to connect Parungkuda – West Sukabumi. The purpose of the research is to plan Time and Cost management based on the Analysis of Work Unit Prices (AHSP) of Cirebon Regency Highways in 2025 and to determine what are the factors that affect time and cost efficiency in the construction of the Cimunjul Bridge on the Bogor – Ciawi - Sukabumi (Bocimi) Toll Road Section 3. The method used is a quantitative approach with primary data from the Project and field observations. The results of the study show that the calculation from the Cimunjul Bridge Cost Budget Plan (RAB) using the Cirebon Regency Highway Highway Work Unit Price Analysis (AHSP) in 2025 is worth IDR 190,985,225,558.80 with a work time of 183 days. Work delays are generally caused by resource constraints and weather factors, while cost efficiency can be achieved through strict time control using the Critical Path Method (CPM) method.
Performance Analysis of Pedestrian Paths in The Colonial Historical Area of Kota Lama Cirebon Mira Lestira Hariani; Arni Muslimah Handayani Widjaja; Martinus Agus Sugiyanto; Ohan Farhan; Fathur Rohman
Journal of Green Science and Technology Vol 7 No 3 (2023): Journal of Green Science and Technology Vol.7 No.3 Special Edition : Applied scie
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v7i3.102

Abstract

Pedestrian path conditions are one of the factors that affect willingness to walk and play an important role in supporting historical tourism activities. This study analyzes the performance of pedestrian paths expressed by Pedestrian Level of Service (PLOS) in the colonial historical area of Kota Lama Cirebon.  The method used in this study was to conduct a geometric survey of pedestrian paths, pedestrian flow surveys, and pedestrian travel time surveys in 10 segments scattered throughout the study area. The survey results were analyzed regarding the 1985 Highway Capacity Manual (HCM) and PLOS values generated based on available walking space. The study shows that in terms of walking space availability, most of the segments in the study area have a PLOS A score, which means they are performing well. In comparison, some segments have poor PLOS, such as Merdeka Street, Yos Sudarso Street, TJ Street, and Kebumen Street, due to the unavailability of sufficient walking paths to serve pedestrians or the presence of side obstacles that reduce the effective width of the pedestrian path. To overcome these problems, several things need to be done, such as: 1) issue a policy prohibiting selling on pedestrian paths to reduce side obstacles so that the effective width of the pedestrian path can increase; 2) widen the pedestrian path at least according to the applicable standards; and 3) provide pedestrian paths on segments that do not yet have pedestrian paths.
Analisis Kapasitas Tampung Sungai Cisanggarung Hilir Desa Kalibuntu Sepanjang 1 KM Menggunakan Aplikasi HEC-RAS Zihanuddin Muntaha; Ohan Farhan; Akbar Winasis
Jurnal Teknik Indonesia Vol. 5 No. 3 (2026): Jurnal Teknik Indonesia
Publisher : Publica Scientific Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58860/jti.v5i3.879

Abstract

Banjir pada wilayah hilir sungai terjadi ketika debit aliran melebihi kapasitas tampung penampang sungai. Penelitian ini bertujuan menganalisis kapasitas tampung Sungai Cisanggarung hilir Desa Kalibuntu sepanjang 1 km menggunakan aplikasi HEC-RAS. Penelitian menggunakan pendekatan kuantitatif deskriptif-simulatif dengan data curah hujan maksimum tahunan periode 2014–2024 dari delapan stasiun hujan, data luas DAS, dan data geometri penampang sungai. Analisis hidrologi dilakukan melalui metode Poligon Thiessen, analisis distribusi probabilitas, uji Chi-Square dan Smirnov-Kolmogorov, serta perhitungan debit banjir rencana menggunakan metode Haspers. Debit banjir rencana yang diperoleh adalah Q10 sebesar 1.189,26 m³/det, Q25 sebesar 1.324,74 m³/det, dan Q50 sebesar 1.429,55 m³/det. Debit tersebut digunakan sebagai input dalam HEC-RAS untuk memodelkan profil muka air dan mengevaluasi kapasitas tampung tiap STA. Hasil simulasi menunjukkan bahwa STA 52+600 mengalami limpasan, sedangkan STA 52+950 sampai STA 53+100 masih memenuhi kapasitas tampung. Temuan ini menunjukkan bahwa kapasitas sungai tidak seragam antarpenampang dan memerlukan penanganan teknis berbasis titik kritis, terutama melalui peninggian jagaan, pelebaran penampang, atau normalisasi sungai.
Establishment of a District Metered Area (DMA) and Water Loss Analysis in Pilang Setrayasa Cirebon M Rifki; Ohan Farhan
Journal of World Science Vol. 5 No. 8 (2026): Journal of World Science
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jws.v5i8.1694

Abstract

Based on customer complaints in the Pilang–Sertayasa area, several issues related to suboptimal water pressure were identified. These issues were attributed to high levels of water loss. This study aimed to determine the level of water loss through the establishment of District Metered Areas (DMA). A descriptive-quantitative research design was employed to evaluate the level of Non-Revenue Water (NRW) through the implementation of a District Metered Area (DMA) in Pilang–Sertayasa, involving a study population of 217 active customers. The instrument used to assess water loss was the DMA method. Water loss analysis was conducted using data loggers, with the collected data analyzed through step-test calculations. The findings revealed that the water loss level, or Non-Revenue Water (NRW), within the Pilang–Sertayasa DMA reached 48.43%. The step-test analysis indicated that Step 1 (0.0125 dQ/Dsr), Step 6 (0.0206 dQ/Dsr), and Step 7 (0.0437 dQ/Dsr) were categorized as high-loss areas. Therefore, immediate interventions, such as leak detection and further evaluation, were required for these steps to reduce water losses and improve distribution system efficiency.
Analysis of Irrigation Networks and Actual Operation and Maintenance Needs (AKNOP) in the Paniis Lebak Main Canal Rico Putra Sarjono; Mohamad Riziq; Ohan Farhan
Journal of World Science Vol. 5 No. 8 (2026): Journal of World Science
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jws.v5i8.1701

Abstract

Irrigation network maintenance plays a strategic role in ensuring efficient and sustainable water distribution to support agricultural productivity. This study aims to evaluate the condition of the irrigation network and calculate the Actual Operation and Maintenance Needs Index (AKNOP) for the Paniis Lebak Main Canal in Kuningan Regency, West Java, Indonesia. A mixed quantitative and qualitative approach was employed through field observations, water discharge measurements, assessments of irrigation canals and hydraulic structures, and maintenance cost calculations based on the technical guidelines of the Indonesian Ministry of Public Works and Housing (PUPR). The results indicate that the irrigation canal remains generally functional; however, minor to moderate damage was identified, reducing the efficiency of water distribution. Irrigation infrastructure plays a strategic role in sustaining agricultural productivity by ensuring a reliable and well-regulated water supply to paddy fields. Optimizing the performance of the irrigation network depends largely on the effective implementation of Operation and Maintenance (O&M) activities, which must be carried out systematically and accurately. From a financial planning perspective, the Actual Operation and Maintenance Needs Index (AKNOP) serves as a critical instrument for estimating maintenance requirements. Accurate AKNOP estimation requires a comprehensive network walkthrough to identify and inventory the actual physical condition and damage of irrigation infrastructure, thereby providing a reliable basis for maintenance planning and budget allocation.
Co-Authors Abu Nidal, Haikal Ade Yusrizal Ula Agustina, Ardianti Ahmad Mansubun Zamanudin Ainun Yusri Akbar Winasis Aldi Aldi Andi Gunawan Andono, Agung Ari Arni Muslimah Handayani Widjaja Awliya Tribhuwana Derry Taddarus Fathur Rohman Fathur Rohman Fathur Rohman Fathur Rohman, Fathur Feby Novela Fujiyanto Fujiyanto Gunawan Gunawan Gunawan Gunawan Hanapi, Fajri Heri Mulyono Ibnu El Musayyab Jati, Muhamad Alfito Kelli Dwi Yusup Lulu Raudlatul Aulia Lumtunnanie, Annisa M Rifki M. Hildan Rafsanjani Martinus Agus S Mira Lestira Hariani Mohamad Riziq Nur Azis Zain Priyono, Cecep Putri, Nur Fieka Rafli, Mochamad Rahayu, Pony Ramadhan, Erik Rizky Rediansyah, Trisna Ferdy Rico Putra Sarjono Rosiyanah, Dita Saihul Anwar Shinta Novriani Sugiyanto, Martinus Agus Syahputra, M Reza Syahrain, Azriel Albani Wahidan, Fikri Zaenal Muttaqin Zain, Nur Azis Zihanuddin Muntaha