Article Per Year (5 Year)
p-Index From 2021 - 2026
6.36
P-Index
This Author published in this journals
All Journal PROSIDING SEMINAR NASIONAL CENDEKIAWAN Teras Jurnal Syntax Literate: Jurnal Ilmiah Indonesia Rang Teknik Journal Prosiding Seminar Nasional Pakar Technomedia Journal Astonjadro Dinasti International Journal of Education Management and Social Science IAIC Transactions on Sustainable Digital Innovation (ITSDI) Journal La Multiapp Indonesian Journal of Engagement, Community Services, Empowerment and Development (IJECSED) International Journal of Social Service and Research Indonesian Collaboration Journal of Community Services (ICJCS) Jurnal Locus Penelitian dan Pengabdian Jurnal Sosial dan Sains Jurnal Indonesia Sosial Teknologi Eduvest - Journal of Universal Studies HUMANITIS : Jurnal Humaniora, Sosial dan Bisnis Jurnal Penelitian Pendidikan Indonesia Advance Sustainable Science, Engineering and Technology (ASSET) Jurnal Rekayasa Lingkungan Terbangun Berkelanjutan
Pontan, Darmawan
Universitas Trisakti
Religion Aerospace Engineering Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Neuroscience Physics Public Health Social Sciences Other

Published : 57 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search
Journal : Technomedia Journal

 1 
Analisis Pengaruh Curve Number terhadap Debit BanjirMenggunakan Metode Pemodelan Hidrologi di DAS Juana: Analysis Curve Number Influence on Flood Discharge using Hydrological Modeling in Juana Watershed Komara, Kresna Dwiki; Kurniyaningrum, Endah; Rinanti, Astri; Yuwono, Bambang Endro; Pontan, Darmawan
Technomedia Journal Vol 9 No 3 (2025): February
Publisher : Pandawan Incorporation, Alphabet Incubator Universitas Raharja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33050/tmj.v9i3.2296

Abstract

This research aims to investigate the effect of Curve Number (CN) on flood discharge in the Juana watershed. Using a case study approach, analysis was carried out to understand the relationship between CN values and hydrological characteristics and flood risk in the region. The research method involves hydrological modeling which takes into account the CN value as a key parameter. Spatial and temporal data on land cover, soil type and vegetation are used to determine CN values in various land change scenarios. The study results indicate a trend of increasing Curve Number (CN) values in 5 Subwatersheds, a decrease in 2 Subwatersheds, and no change in 1 Subwatershed. The highest increase in CN value was observed in the Juana 2 Subwatershed, with an increase of (+) 0.935, while the largest decrease was found in the Gembong Subwatershed, with a decrease of (-) 0.349. Both the increase and decrease in CN values are directly proportional to the resulting flood discharge. These findings have important implications for disaster risk management, regional planning, and sustainable policy development in the Juana River Basin and similar regions worldwide. By understanding more deeply the influence of CN on flood discharge, more effective mitigation measures can be designed to protect communities and ecosystems that are vulnerable to flood threats.
Analysis of Risk Factors of HPS in Goods and Services Procurement for Jakarta Property Projects: Mitigasi Risiko HPS Berbasis Digital pada Pengadaan Proyek Properti Gandhi, Iswara; Pontan, Darmawan; Inavonna, Inavonna; Kusumawati, Lili
Technomedia Journal Vol 10 No 1 (2025): June
Publisher : Pandawan Incorporation, Alphabet Incubator Universitas Raharja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33050/tmj.v10i1.2459

Abstract

The procurement of goods and services for property projects in Jakarta faces various challenges, primarily due to inaccuracies in the Self-Estimated Price (HPS), which lead to significant risks in cost, time, and quality. This study seeks to identify the dominant risk factors caused by HPS inaccuracies and propose effective strategies to mitigate their impact on property project procurement. The research uses the Analytical Hierarchy Process (AHP) method, with 54 respondents involved, to evaluate three key risk categories: cost, time, and quality, based on the effects of HPS inaccuracies. The study finds that these inaccuracies undermine budget efficiency, cause delays in procurement processes, and negatively impact the quality of goods or services received. Cost-related risks include document instability and unforeseen expenses, while time-related risks involve delays and frequent revisions of the HPS. Quality-related risks stem from the use of substandard materials and the failure to meet project specifications. To mitigate these risks, the study proposes updating the HPS with up-to-date market data, conducting regular price surveys, enhancing the skills of procurement teams, adopting digital technologies such as e-procurement systems, and improving supplier selection processes. These strategies aim to improve procurement efficiency, enhance project quality, and ensure cost-effectiveness, ultimately leading to better project outcomes.
Software Based Geotechnical Analysis of Spillway Slope Reinforcement Fabyanto, Ikhsan; Zaki, Muhammad; Pontan, Darmawan; Widiarso, Tulus
Technomedia Journal Vol 10 No 2 (2025): October
Publisher : Pandawan Incorporation, Alphabet Incubator Universitas Raharja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33050/zzgyr313

Abstract

The construction of large-scale infrastructure such as dams requires precise planning and implementation to ensure structural stability and long-term operational safety. This study aims to analyze slope protection and embankment reinforcement at the spillway excavation area of the Dam Project in Surian District, located in the 137 km-long Cipunagara River Basin. A quantitative approach was applied, using geotechnical modeling software Plaxis 8.6 and Microsoft Excel for data processing. Three slope reinforcement methods were compared: geomat, shotcrete, and cocomesh. Based on the analysis, slope reinforcement using shotcrete achieved the highest safety factor, with short-term SF = 1.649 (34.50% increase) and long-term SF = 1.514 (23.49% increase). Geomat ranked second with SF = 1.544 (25.94%) and 1.418 (15.66%), while cocomesh obtained SF = 1.540 (25.61%) and 1.355 (10.52%). The unreinforced slope had an SF of 1.226. In terms of cost, shotcrete was the most expensive at IDR 4,331,068,967.23, followed by geomat (IDR 2,734,025,024.50) and cocomesh (IDR 906,745,000.00). However, shotcrete also required the longest construction time (30 days) compared to geomat (20 days) and cocomesh (16 days). Shotcrete provides the best technical performance for slope stability, but geomat and cocomesh are more efficient alternatives in terms of cost and time, offering a balanced solution for slope reinforcement projects.
Digital Based Estimation of Residential Property Losses from Liquefaction in West Jakarta Maryati, Indah; Zaki, Muhammad; Pontan, Darmawan; Widiarso, Tulus
Technomedia Journal Vol 10 No 2 (2025): October
Publisher : Pandawan Incorporation, Alphabet Incubator Universitas Raharja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33050/tmj.v10i2.2500

Abstract

Liquefaction poses a significant threat to urban areas with water-saturated alluvial soils, especially in seismically active zones like West Jakarta. Using Cone Penetration Test (CPT) data from 25 locations, soil susceptibility was evaluated through Cyclic Stress Ratio (CSR), Cyclic Resistance Ratio (CRR), and Magnitude Scaling Factor (MSF). Areas with safety factor (FS) values below 1 were identified as having high liquefaction potential. Residential buildings were categorized by floor area and assessed using the 2024 Government Property Sales Value (NJOP) to estimate potential financial loss. Structural damage percentages were determined using seismic intensity thresholds and empirical damage functions. Analysis showed that residential areas with moderate to loose soil conditions, particularly in the northern and western zones, are most vulnerable. The total estimated loss reached IDR 189.8 billion, with the highest concentration of damage in medium and large sized residential properties. These findings emphasize the critical need to integrate geotechnical parameters into spatial risk mapping and urban disaster mitigation planning. A digital loss estimation model combining soil characteristics, seismic parameters, and economic valuation provides a scalable approach for early warning systems and resilience-oriented urban planning. The study contributes to data-driven risk management strategies aligned with sustainable development objectives and adaptive infrastructure policies.
Co-Authors Abadan, Achmad Chakim Abidin, Dikky Safitra Adnan Muhtaram Alexander Alexander, Alexander Alfa Nur Alim Alim, Alfa Nur Alsion Maxsi Andhika Putri, Lisa Antoni, Febri Aprilia, Isnaeni Arfyan, Aslam Rizki Aulia Najah Bambang Endro Yuwono Berman, Berman Bhekti, Dhanu Setyo Bruantama, Daffa Miln Cakrawinata, Annastashia Dinie Aprilia Chandra Gemilang Chen, Pentagon Christianto Christianto Daniel Daniel Diski Kholida Zia Hadie Putri Endah Kurniyaningrum Endro Yuwono, Bambang Fabyanto, Ikhsan Fadli Rahman Al Ghifari Fadly, Noer Fajar, Isma Fatchurrohman Fatchurrohman, Fatchurrohman Fawwaz, Arvyant Arrazaqi Gandhi, Iswara Gemilang, Chandra Pramodya Hartanty, Dyah Widya Dwi Heru Pambudi Hevada T, Laska Hot Maruli Tua Frans Marihot Purba Imam Muhammad Fikri, Imam Muhammad Inavonna Inavonna, Inavonna Indrawati Sumeru Innavona, Innavona Intan Yulianisa Irawan, Angga Ananda Irawandi, Veby Komara, Kresna Dwiki Lahji, Khotijah Lili Kusumawati M Yusuf D Adiwinata M. Zaki M. Zaki, M. Zaki Mahatmantong, Syafrullah Manisha, Manisha Martinus Bambang Susetyarto Maryati, Indah Melkysedek, Hobert Mangatur Michella Maria Veronika Mokodongan, Masita Aisza Muhammad Anugrah Wibawa Mukti Muhammad Anwar Muhammad Fikri, Imam Muhammad Zaki Mundung, Daniel Nabila, Efa Ayu Nugroho, Muhammad Sapto Palensia, Ruri Welda Parwadi Moengin Pentagon, Pentagon Rahman, Naufall Fadhlur Rose, Ugahari Rowin Sinaya, Nyoman Rucitawangi, Manisha Saihul Anwar Saihul Anwar Salman, Salman - Sanbella, Lunatari Sari, Feby Kartika Septia, Zahara Ajeng Setyo Bhekti, Dhanu Silvano, Verian Gustam Sugeng Riyanto Sugeng Riyanto Sujagat, Galih Prio Sumeru, Indrawati Suradjin Sutjipto Sutjipto, Suradjin Syamsiar, Syamsiar Syifa Aulia Putri Tulus Widiarso Wahyudhi, Nyoman Oka Wibawa, Ilham Akbar Mulya Wijasena, Razaq Agung Zaki, M.