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All Journal PROSIDING SEMINAR NASIONAL CENDEKIAWAN Teras Jurnal Syntax Literate: Jurnal Ilmiah Indonesia Rang Teknik Journal Prosiding Seminar Nasional Pakar Technomedia Journal Astonjadro 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 Talenta Sipil Jurnal Sosial dan Sains 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
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Water Availability in the Moayat River in Meeting Water Needs in Kotamobagu, North Sulawesi Mokodongan, Masita Aisza; Kurniyaningrum, Endah; Yuwono, Bambang Endro; Pontan, Darmawan
IAIC Transactions on Sustainable Digital Innovation (ITSDI) Vol 6 No 2 (2025): April
Publisher : Pandawan Sejahtera Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34306/itsdi.v6i2.689

Abstract

The Moayat River in Kotamobagu, North Sulawesi, plays an important roleas a water source to meet the needs of the local community. However, water management in this area faces significant challenges due to seasonal discharge fluctuations, changes in land cover, and increasing water demand. This study aims to analyze the water availability of the Moayat River based on surface water conditions and current water demand assessments, future water demand projections, and water balance evaluations. The results show that current water availability is sufficient to meet domestic water needs. However, surface water conditions are influenced by climate change indicators, so that river discharge approaches the water demand threshold, thus creating a risk of water shortages,especially for irrigation. Over the past decade, forest cover in the catchment area has decreased, which has led to increased surface runoff and reduced water infiltration. Based on these findings, climate change in land cover greatly affects surface flow conditions so that an integrated management strategy is needed, including watershed rehabilitation, development of water storage infrastructure, and increasing water use efficiency, is essential to ensure the long-term sustainability of water supply from the Moayat River.
RISK MANAGEMENT IN THE ANDIR RETENTION BASIN PROJECT: A QUALITATIVE CASE STUDY Feby Kartika Sari; Muhammad Sapto Nugroho; Darmawan Pontan
HUMANITIS: Jurnal Homaniora, Sosial dan Bisnis Vol. 3 No. 2 (2025): AGUSTUS
Publisher : ADISAM PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Mega infrastructure projects in Indonesia face a complex landscape of uncertainty, often hindered by significant non-technical risks such as land acquisition and financing issues. Systematic risk management is crucial to ensure project success. This research aims to comprehensively dissect and map the risk landscape in a case study of the Andir Retention Basin Project, which reflects these challenges. Using a qualitative case study approach, this study gathered primary data through in-depth interviews with key stakeholders. Through participatory discussions, each risk was identified and assessed based on its probability and impact levels. The assessment results were then mapped onto a risk matrix to determine priority levels and formulate appropriate response strategies. The research identified 12 main risks, with five categorized as Very High: Land Acquisition, Project Financing, Regulatory Changes, Bad Weather, and Work Accidents. The main conclusion of this study is that the project's risk profile is dominated by non-technical and external factors. This finding confirms that the success of modern infrastructure projects depends not only on technical excellence but also on the management's ability to proactively navigate social, financial, and regulatory complexities.
Analysis of Implementation Time Performance Using Earned Value Method Pontan, Darmawan; Daniel, Daniel; Pentagon, Pentagon; Manisha, Manisha; Sumeru, Indrawati
Journal La Multiapp Vol. 6 No. 5 (2025): Journal La Multiapp
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamultiapp.v6i5.2456

Abstract

Construction projects often face cost and time constraints, while projects are required to be completed on schedule. To overcome these problems, an accurate management system is needed in a construction project to measure time performance, which refers to the progress of the work. By applying the earned value management (EVM) method, it is possible to project progress and weekly performance indices, making it easier to evaluate when there are deviations from the schedule. This study aims to analyze schedule variations and weekly time productivity, enabling the prediction of when the project will be completed. In the construction project of the Faculty of Law Building at Samratulangi University in North Sulawesi Province, reviews were conducted in weeks 1, 5, 10, 11, 20, and 25, where each review period had different CV, SV, and CPI values, allowing to assess at which time the predicted time was closest to the actual time occurring on-site.
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.
Simulation Model of Precast Concrete Element Delivery on Time and Operational Costs of the Precast Yard in the Board Mill Construction Project Cakrawinata, Annastashia Dinie Aprilia; Kurniyaningrum, Endah; Yuwono, Bambang Endro; Pontan, Darmawan
Eduvest - Journal of Universal Studies Vol. 4 No. 5 (2024): Journal Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v4i5.1299

Abstract

This research aims to develop an optimal delivery model for precast elements in the Board Mill construction project in Pelalawan Regency, Riau, which includes 7,412 precast elements. Using an engineer-to-order manufacturing system and flowshop production, simulations were conducted to evaluate delivery variables and their impact on duration and cost. Data from the simulations were analyzed using linear regression to determine the most optimal delivery model, with the significance of independent variables tested using a P-value threshold of ≤ 0.15. The simulation and calculation results show that the most optimal delivery model for delivering precast column, beam, slab, and crane beam elements is a delivery model with a 12-hour work period or with overtime. The optimal delivery condition for column elements uses 3 cranes and 9 trailers; for beam and slab elements, it uses 3 cranes and 8 trailers; and for crane beam elements, it uses 3 cranes and 7 trailers.
Implementation of 5D Building Information Modelling (BIM) System on Quay Wall Structure By Paying Attention to Clash Detection (Case Study: Project Patimban Package 6) Palensia, Ruri Welda; Kurniyaningrum, Endah; M. Zaki, M. Zaki; Pontan, Darmawan
Eduvest - Journal of Universal Studies Vol. 4 No. 12 (2024): Journal Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v4i12.1698

Abstract

Building Information Modeling (BIM) is one of the technologies in the field of AEC (Architecture, Engineering and Construction) that is able to simulate all information in a development project into a 3D model. Research in this thesis was carried out to analyze the results of the implementation of Building Information Modelling (BIM) 5D in dock work (Quay Wall Structure) by paying attention  to clash detection at the pre-construction stage, with a case study of the Patimban Port Project Package 6. The focus of the research is the application of BIM 5D in identifying and resolving design clashes that can have an impact on the estimation of work volume and cost. The method used is qualitative and inductive analysis using Tekla Structure 2021 BIM software for 3D modeling and clash detection identification. The results of clash detection identification are grouped into three categories, namely large, medium, and small. The implementation of BIM 5D shows significant volume changes in some work items. The volume of the Deck Slab (Pier Head) and Front Wall decreased compared to the initial RAB, while the volume of the Deck Slab (In-Situ Concrete) increased. The cost comparison shows a savings of 7.06% of the total initial cost of RAB Quay Wall Structure, which is equivalent to IDR 10,502,919,303.55. The implementation of BIM 5D by conducting clash detection is quite effective in identifying and resolving design clashes, mitigating errors and revisions when entering the construction stage, and can increase project efficiency in better communication and coordination.
Evaluation Of Cost And Time Performance Control Using The Concept Method Of Earned Value In The Purwodadi Market Development Project, Argamakmur District, North Bengkulu Regency Anwar, Muhammad; Kurniyaningrum, Endah; Pontan, Darmawan; Innavona, Innavona
Eduvest - Journal of Universal Studies Vol. 4 No. 11 (2024): Journal Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v4i11.49920

Abstract

Construction projects often face challenges in maintaining a balance between execution and planning, especially in terms of time and cost. Delays and cost overruns often hinder project efficiency, which has an impact on the satisfaction of the project owner. This study aims to evaluate the cost and time performance of the Purwodadi Market development project in North Bengkulu Regency using the Earned Value Management (EVM) approach. The EVM method was chosen because of its ability to provide a comprehensive picture of the achievement of project performance in terms of time and cost. Data is obtained from the project's weekly report and analyzed using indicators such as Actual Cost of Work Performed (ACWP), Budgeted Cost of Work Scheduled (BCWS), and Budgeted Cost of Work Performed (BCWP). The results show that in the 9th month, the project achieved faster progress than scheduled with a Schedule Performance Index (SPI) of 1.068 and a Cost Performance Index (CPI) of 1.012. This shows that the project is running more efficiently in terms of time and more cost-effective compared to the planned budget. However, there are several months before (the 5th to 8th month) that show delays and wasted costs. The conclusion of this study is that the EVM method is effective in evaluating project performance and allows for the identification of areas that need improvement. Thus, the application of EVM is recommended to improve the management efficiency of similar construction projects.
Analysis of Road User Satisfaction Passing Through The West Boulevard Highway and The Kelapa Gading - Pulo Gebang Toll Road Andhika Putri, Lisa; Pontan, Darmawan; Moengin, Parwadi; Inavonna, Inavonna
Eduvest - Journal of Universal Studies Vol. 5 No. 1 (2025): Journal Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i1.50378

Abstract

This study aims to analyze the satisfaction level of road users on Jalan Boulevard Barat Raya and the Kelapa Gading - Pulo Gebang Toll Road. Evaluating user satisfaction is crucial for assessing transportation infrastructure performance and prioritizing road maintenance and development. Using a quantitative approach, data was collected through questionnaires distributed to drivers and passengers of private and online four-wheeled vehicles. The research applied the Importance Performance Analysis (IPA) and Customer Satisfaction Index (CSI) methods, focusing on nine indicators from the Indonesian Ministerial Regulation No. 14 of 2017, including requirements, procedures, completion time, costs, service specifications, implementer competence, behavior, complaint handling, and facilities. The CSI results revealed that road users are "Very Satisfied" with both roads, with Jalan Boulevard Barat Raya scoring 90.7% and the Kelapa Gading - Pulo Gebang Toll Road scoring 90.85%. However, IPA analysis identified several variables in quadrant 1, indicating high importance but low performance. These variables include: (B1) reasonable tariffs without additional costs, (PP1) friendly and polite officers handling complaints, (SM1) availability of complaint forums, and (SP1) adequate supporting facilities. These findings highlight areas needing improvement to enhance user satisfaction further. Overall, the study underscores the importance of addressing specific service gaps to maintain high satisfaction levels among road users.
Potensi Penghematan Biaya Dan Waktu Konstruksi terhadap Detail Engineering Design (DED) di RSPAD Gatot Soebroto Hartanty, Dyah Widya Dwi; Yuwono, Bambang Endro; Pontan, Darmawan; Inavonna, Inavonna
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i4.57749

Abstract

Indonesia sebagai negara berkembang terus berupaya memenuhi kesejahteraan rakyat dengan berbagai pembangunan infrastruktur. Namun, banyak proyek konstruksi mengalami masalah yang menyebabkan keterlambatan dan pembengkakan biaya, seringkali disebabkan oleh desain yang kurang matang. Penelitian ini bertujuan untuk mengevaluasi potensi penghematan biaya dan waktu dalam proyek Gedung Proton Beam RSPAD Gatot Soebroto Jakarta, dengan mengidentifikasi jenis tanah pada tahap Detail Engineering Design (DED) sebelum pelaksanaan konstruksi. Metode yang digunakan dalam penelitian ini adalah analisis data sekunder dari proyek, yang dibandingkan antara kondisi kesalahan desain yang terjadi saat konstruksi dan kondisi di mana desain diubah sebelum konstruksi dimulai. Temuan menunjukkan bahwa dengan mendeteksi jenis tanah lebih awal, penghematan biaya mencapai 50% dan penghematan waktu sebesar 150% dari yang diperkirakan. Implikasi dari penelitian ini memberikan wawasan penting bagi perencana dan pelaksana proyek untuk memperhatikan aspek geoteknik dalam tahap perencanaan, sehingga dapat meminimalisir risiko dalam proyek konstruksi.
Analisis Keputusan Pemilihan Vendor pada Proyek Infrastruktur Kawasan Ibu Kota Negara (IKN) dengan Menggunakan Metode Rank Order Centroid (ROC) dan Simple Multi Attribute Rating TechniquE (SMART) Mahatmantong, Syafrullah; Moengin, Parwadi; Kurniyaningrum, Endah; Pontan, Darmawan
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v10i7.60497

Abstract

Di era pembangunan infrastruktur sekarang ini, kebutuhan akan vendor semakin meningkat. Vendor sebagai pihak penyedia sangat berperan penting dalam menentukan kualitas produk dan kelancaran proses konstruksi. Maka dari itu perusahaan perlu selektif dalam memilih vendor sebagai mintra bisnis. Pemilihan vendor sangat penting dilakukan oleh perusahaan untuk meningkatkan rantai pasok dan mendapatkan kualitas mutu produk yang baik. Oleh karena itu perusahaan perlu melakukan penilaian dan pemilihan terhadap kinerja dari setiap vendor. Proyek-proyek di Kawasan IKN merupakan proyek yang pengerjaannya dilakukan percepatan dari waktu yang ditentukan, sehingga perlu suatu strategi yang matang dalam merencanakan pengadaan material. Pengadaan material menjadi hal penting dalam keberlangsungan proyek, maka dari itu dibutuhkan strategi yang cepat dan tepat dalam pemilihan vendor untuk men-supply material yang dibutuhkan dalam pelaksanaan. Tujuan dari penelitian ini yaitu membuat strategi pemilihan vendor dengan pendekatan pengambilan keputusan menggunakan metode kombinasi Rank Order Centroid (ROC) untuk menghitung bobot kriteria dan Simple Multi Attribute Rating Technique (SMART) untuk menentukan alternatif terpilih. Metode penelitian ini dilakukan dengan penyebaran kuesioner untuk menentukan kriteria prioritas berdasarkan pendapat dari para expert judgment. Dari hasil pengolahan kuesioner diperoleh bahwa dari 13 kriteria hasil studi literature diperoleh 7 kriteria prioritas dalam pemilihan vendor, yang dilakukan perhitungan pembobotan kriteria dengan metode ROC, yang secara berurutan yaitu: kriteria Kualitas (37,04%), Harga (22,76%), Responsif (15,61%), Reputasi Perusahaan (10,85%), Metode Pembayaran (7,28%), Pengiriman (4,42%) dan Layanan (2,04%). Dan dari hasil pengolahan data juga diperoleh vendor terpilih dengan metode SMART untuk pengadaan Girder tipe I yaitu PT. Adhimix PCI, pengadaan Girder tipe U yaitu PT. Adhimix PCI, dan pengadaan baja tulangan BjTS 420B yaitu: PT. Buana Baja.
Co-Authors Abadan, Achmad Chakim Abidin, Dikky Safitra Adnan Muhtaram Alexander Alexander, Alexander Alfa Nur Alim Alfa Nur Alim Alim, Alfa Nur Alsion Maxsi Andhika Putri, Lisa Antoni, Febri Arfyan, Aslam Rizki Aulia Najah Bambang Endro Yuwono Berman, Berman Bhekti, Dhanu Setyo Bruantama, Daffa Miln Budi Hartanto Susilo Cakrawinata, Annastashia Dinie Aprilia Chandra Gemilang Chandra Pramodya Gemilang Chen, Pentagon Christianto Christianto Daniel Daniel Diski Kholida Zia Hadie Putri Endah Kurniyaningrum Fabyanto, Ikhsan Fadli Rahman Al Ghifari Fadly, Noer Fajar, Isma Fatchurrohman Fatchurrohman, Fatchurrohman Fawwaz, Arvyant Arrazaqi Galih Prio Sujagat 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 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 Novriardo, Fiqry Ichsan Nugroho, Muhammad Sapto Palensia, Ruri Welda Parwadi Moengin Pentagon, Pentagon Rahman, Naufall Fadhlur Rose, Ugahari Rucitawangi, Manisha Saihul Anwar Saihul Anwar Salman, Salman - Sanbella, Lunatari Sangadji, Cindy 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 Wijayayanto, Indra Aprian Zahara Ajeng Septia Zaki, M.