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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 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
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Risk Analysis Of Construction Planning Affecting Quality, Time, and OHS Control on Management Performance in Warehouse and Logistics Industry Fauzi, Muhammad; Pontan, Darmawan; Zaki, Muhammad; Widiarso, Tulus
Dinasti International Journal of Education Management And Social Science Vol. 6 No. 3 (2025): Dinasti International Journal of Education Management and Social Science (Febru
Publisher : Dinasti Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/dijemss.v6i3.4036

Abstract

The logistics industry in Indonesia is growing in line with the increase in online transactions. Warehouse facilities play a crucial role in the logistics industry as they are essential for ensuring smooth business operations. Warehouses used for logistics purposes generally employ steel construction. The development of steel-structured warehouses carries considerable risks that can affect project completion time, project quality, occupational health and safety (OHS), and management performance. Therefore, management must be able to identify and analyze all potential risks during warehouse construction to ensure the project is completed with planned quality, OHS control, and timing. This study aims to identify the relationships among risk factors during the planning and construction phases with quality control, time, and OHS, which can influence management performance. Additionally, it seeks to measure the impact of project control, particularly in terms of quality, time, and OHS, on management performance in warehouse and logistics industry development. The research employs a quantitative descriptive method. Data analysis was conducted using Structural Equation Modeling (SEM) with the Smart PLS application. The study found that risks have a direct positive impact on quality control, time, and OHS but an insignificant negative impact on management performance. Furthermore, the findings indicate that quality control, time, and OHS significantly and positively influence management performance.
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.
Analysis of Decision Making in Vendor Selection on the TKDN Value Limit Based on the Decree of the Minister of PUPR NO.602/KPTS/M/2023 Arfyan, Aslam Rizki; Kurniyaningrum, Endah; Pontan, Darmawan; Kusumawati, Lili
Eduvest - Journal of Universal Studies Vol. 5 No. 5 (2025): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i5.49995

Abstract

In the procurement process for goods and services, the use of domestic products is emphasized in Government Regulation No. 29 of 2018 regarding Industrial Empowerment, which mandates the use of Domestic Products (PDN) with a minimum Domestic Component Level (TKDN) of 40%. This regulation, outlined in Article 57, focuses on the inclusion of domestic components in various products and services, including construction works, which must adhere to TKDN provisions. The Ministry of Public Works and Public Housing (PUPR) has taken significant steps to support the use of domestic products by establishing the 2022-2024 Domestic Product Improvement Team (P3DN) in March 2022, followed by the issuance of Presidential Instruction No. 2 of 2022. This aims to accelerate the use of domestic products and promote small businesses through the National Movement Proud of Made in Indonesia. The TKDN is calculated based on the proportion of locally sourced materials and equipment in a product or service, and construction sectors like highways, dams, and irrigation works fall under the purview of various directorates at the Ministry of PUPR. This study investigates how these policies influence the procurement decisions in infrastructure projects and the impact of TKDN on vendor selection processes, particularly in large-scale construction projects such as road building and bridge construction. The findings are expected to contribute to a better understanding of TKDN implementation in the construction industry, offering insights into the challenges and opportunities of integrating domestic products into public procurement.
The Effectiveness of Iot Use on Supply Chain Management Under Extreme Conditions in The Copper Cleaner Project Wahyudhi, Nyoman Oka; Yuwono, Bambang Endro; Pontan, Darmawan; Inavonna, Inavonna
Eduvest - Journal of Universal Studies Vol. 5 No. 7 (2025): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i7.50796

Abstract

The success of a project cannot be separated from a series of activities that include planning, implementation and supervision stages. In Time control on a project, it is very necessary for a project to be able to complete the project on time or earlier than planned. The time control method used in this study is the Supply Chain Collaboration, Integration and Relations method. This research was conducted on the PT XYZ Mining Facility Development Project, Mimika Regency, Papua which aims to find out the project performance and get solutions to the problems that occur in the mining facility construction project. The data used in this study are Time Schedule, Construction Plan, Worker Supply Plan and weekly progress report. The implementation of IoT technology in logistics processes significantly improves the efficiency and effectiveness of the supply chain. In the copper cleaner project, the application of IoT was able to reduce delivery delays by an average of 13% and increase the reliability rate of delivery (on-time delivery) to 85%.
The Effect of Soil Survey Adequacy on Engineering Design Details (DED) on Potential Cost and Construction Time Savings Wibawa, Ilham Akbar Mulya; Yuwono, Bambang Endro; Pontan, Darmawan; Widiarso, Tulus
Eduvest - Journal of Universal Studies Vol. 5 No. 7 (2025): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i7.50870

Abstract

The construction of the Kadusirung Dua Underpass Project in Banten aimed to improve access routes but encountered landslides during execution, necessitating design changes and additional soil investigations. This study examined the impact of inadequate soil surveys on engineering design, focusing on cost and time efficiency. The research objectives were to analyze the effects of design changes during construction, compare initial and revised designs, and evaluate savings potential if proper soil investigations were conducted initially. Using secondary data from the project, the study employed Microsoft Project for time-cost analysis and applied the Cost of Change vs. Opportunity to Influence theory. Findings revealed that design changes during construction increased costs by Rp 43.6 billion and extended the timeline by 566 days. Conversely, comprehensive soil surveys at the planning stage could have saved 25% of the time (237 days) and 18% of costs (Rp 38.9 billion). The implications highlight the critical need for thorough geotechnical investigations early in projects to mitigate delays and cost overruns. The study underscores the importance of adhering to soil testing standards (SNI 8460:2017) and optimizing design decisions during planning to enhance project efficiency.
Evaluasi Tingkat Kepuasan Pengguna Fasilitas Pejalan Kaki di Jalan Kyai Tapa Grogol Rahman, Naufall Fadhlur; Pontan, Darmawan; Kurniyaningrum, Endah; Inavonna
Jurnal Locus Penelitian dan Pengabdian Vol. 4 No. 6 (2025): JURNAL LOCUS: Penelitian & Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v4i6.4474

Abstract

Penelitian ini bertujuan untuk mengevaluasi tingkat kepuasan pengguna terhadap fasilitas pejalan kaki di Jalan Kyai Tapa, Grogol, yang merupakan salah satu jalur pedestrian penting dan padat aktivitas. Permasalahan utama yang dihadapi di jalur ini adalah keberadaan pedagang kaki lima (PKL) dan parkir liar yang mengurangi ruang pejalan kaki, sehingga menurunkan kenyamanan dan keselamatan pengguna. Penelitian ini menggunakan metode Importance Performance Analysis (IPA) dengan data primer yang diperoleh melalui penyebaran kuesioner kepada pengguna jalur pedestrian. Hasil analisis menunjukkan hanya 33% dari fasilitas eksisting yang dinilai sudah cukup baik, sehingga ini mengindikasikan tingkat kepuasan yang masih rendah sehingga masih banyak aspek yang perlu ditingkatkan. Penelitian ini mengidentifikasi lima variabel utama yang memengaruhi kepuasan pengguna, yaitu keselamatan dan keamanan, kenyamanan, kesetaraan, kemudahan dan aksesibilitas, serta keindahan. Selain itu, melalui diskusi kelompok terarah (Focus Group Discussion), ditemukan tiga indikator tambahan yang turut memberikan pengaruh signifikan terhadap kepuasan pengguna. Hasil ini diharapkan dapat menjadi masukan dalam perencanaan dan peningkatan fasilitas pejalan kaki yang lebih humanis dan terintegrasi.
Cost Analysis of Construction Using the Cost Significant Model and Artificial Neural Network or Feasibility Study Cost Estimation in Process Industry (Case Study: Feasibility Study Projects in the Process Industry Sector in Indonesia) Fajar, Isma; Zaki, Muhammad; Pontan, Darmawan; Widiarso, Tulus
Eduvest - Journal of Universal Studies Vol. 5 No. 7 (2025): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i7.50381

Abstract

The process industry plays a vital role in the global economy, with increasing complexities requiring significant capital investment for projects. Accurate cost estimation in the early stages is critical to avoid cost overruns, delays, and poor quality. During the feasibility study phase, accurate cost estimation is crucial for project success. This study employs the cost significant model (CSM) to identify key cost elements influencing the total construction cost and compares the model's accuracy with actual costs in 50 process industry projects in Indonesia from 2010 to 2024. Artificial Neural Networks (ANN) with backpropagation are also used to validate the model and calculate the Mean Absolute Percentage Error (MAPE) for accuracy assessment. Analysis identifies significant cost components such as Mechanical ISBL (55.89%), Mechanical OSBL (7.65%), Electrical (6.06%), and Superstructure (15.07%), collectively contributing 84.66% of total costs. ANN-ALL achieves the highest accuracy (L: -4.76%, H: 0.55%), followed by CSM Model 3, ANN-CSM, and others, as per AACE International guidelines. Models exceeding Class 4 benchmarks are unsuitable for feasibility studies. Data analysis combines regression using SPSS and ANN modeling with MATLAB, highlighting the ANN-ALL model's superiority in cost estimation accuracy.
Implementasi Konsep Net Zero Healthy Pada Bangunan Sekolah Antoni, Febri; Kusumawati, Lili; Kurniyaningrum, Endah; Pontan, Darmawan; Widiarso, Tulus
Jurnal Locus Penelitian dan Pengabdian Vol. 4 No. 6 (2025): JURNAL LOCUS: Penelitian & Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v4i6.4268

Abstract

This study aims to evaluate the implementation of the Net Zero Healthy (NZH) concept in a total school rehabilitation project in DKI Jakarta Province, as an effort to develop energy-efficient buildings that also promote physical health and thermal comfort for occupants. Employing a qualitative case study approach, data were collected through in-depth interviews, field observations, document analysis, and questionnaires from building users. The results indicate that solar panels effectively supplied 15% of the school’s total energy needs, although constrained by regulations. Furthermore, all working spaces met the minimum standards for natural ventilation and daylighting based on ASHRAE and Indonesian national standards. Mechanical ventilation through fans also performed optimally, supplying fresh air significantly above the required minimum. These findings demonstrate that NZH principles can be effectively applied to public building projects by considering design, technology, and user behavior. This research contributes significantly to green building policy development and national emission reduction efforts.
Pengolahan Sampah Terpadu Dengan Konsep Waste To Energy Di Smart City IKN Rose, Ugahari; Kusumawati, Lili; Kurniyaningrum, Endah; Pontan, Darmawan; Widiarso, Tulus
Jurnal Locus Penelitian dan Pengabdian Vol. 4 No. 6 (2025): JURNAL LOCUS: Penelitian & Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v4i6.4269

Abstract

In the context of the development of Indonesia’s new capital city in East Kalimantan, waste management presents increasingly complex challenges. Due to limited existing infrastructure, unintegrated waste management can lead to groundwater contamination, vegetation cover degradation, and threats to local biodiversity. This study aims to evaluate the implementation of an integrated waste treatment system combined with Waste to Energy (WtE) technology in the Capital City Area. Data were collected through direct observation and interviews with relevant stakeholders to measure the operational performance of the system. Field measurements included emissions analysis, energy production, and waste volume reduction. Based on a 15-day observation period in December 2024, thermal treatment produced only 2.97% residue. Assuming the operation of a single incinerator unit and limited waste supply, waste can be converted into electrical energy (Waste to Energy) with a power output of 195.169 watts. It can be concluded that by operating two incinerator units under the current conditions, the energy output could be doubled to 390.338 watts.
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.