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Alizar Alizar
Dian Nusantara University
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Journal : international journal multidisciplinary science

 1 
Evaluation of Wastewater Pipeline Network Discharge in the Area of Patimura Street to Prapanca Raya Street, South Jakarta Ali Bahroni; Alizar Alizar
International Journal Multidisciplinary Science Vol. 5 No. 1 (2026): February: International Journal Multidisciplinary Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijml.v5i1.2683

Abstract

This study evaluates and plans a wastewater pipeline network to support sustainable urban wastewater management in the Pattimura Street–Prapanca Raya area. The analysis uses a gravity-flow hydraulic approach that considers domestic wastewater discharge, infiltration, peak factors, and pipe filling conditions. The results indicate that the maximum design discharge of 0.7296 m³/s can be accommodated by the planned pipeline network. The calculated pipe diameter was adjusted to a standard size of 250 mm to ensure sufficient capacity and safe operation. Flow velocities meet technical requirements, preventing sedimentation and pipe damage. An 80% pipe filling ratio provides reserve capacity for future flow increases, while the design discharge remains within the capacity of the existing wastewater treatment plant. Therefore, the proposed wastewater pipeline network is optimally designed and suitable as a connection point for future network development
An Analysis of Traffic Congestion Due to Railway Crossings on Prof. Dr. Latumenten Road, Grogol, West Jakarta Wisnu Akbar; Alizar Alizar
International Journal Multidisciplinary Science Vol. 4 No. 2 (2025): June: International Journal Multidiciplinary Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijml.v4i2.2231

Abstract

This study aims to analyze the impact of railway crossings on congestion levels, traffic volume, delays on Jalan Prof. Dr. Latumenten Grogol, West Jakarta. The research methods used include collecting traffic data through primary data from direct surveys and analyzing secondary data from related agencies. The parameters analyzed include vehicle volume, queue duration, side barrier performance, delays and frequency of crossing barrier closures. The method used refers to the Indonesian Road Capacity Guidelines (PKJI 2023). The final result of the research writing is to provide recommendations for handling traffic congestion due to railway crossings, such as proposals for the construction of flyovers or underpasses, improving traffic management in affected areas
Operational Speed Analysis of LRT Trains on Curved Track Sections in the Kuningan Line (Long Spans) Yuli Sulistiyohadi; Alizar Alizar; Norfi Janoko Sakti
International Journal Multidisciplinary Science Vol. 4 No. 2 (2025): June: International Journal Multidiciplinary Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijml.v4i2.2292

Abstract

Mass transit systems such as Light Rail Transit (LRT) offer an efficient and environmentally friendly solution to urban mobility challenges. The performance of LRT systems is highly influenced by track geometric design, particularly in segments involving curve radii and long-span structures. The analysis is based on technical parameters such as centrifugal force, track elevation (superelevation), and railway geometric standards as stipulated by national regulations. The findings indicate a reduction in operational speed on certain curved sections where the radius does not align with ideal design speeds, primarily due to geometric constraints and safety considerations.
Time Management Analysis on the Terban Market Renovation Project in Yogyakarta Panca setiawan; Alizar Alizar
International Journal Multidisciplinary Science Vol. 4 No. 3 (2025): October: International Journal Multidisciplinary Science
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijml.v4i3.2293

Abstract

The construction of the Terban Market in Yogyakarta requires time management that not only sharpens priorities but also enhances the efficiency and effectiveness of project execution. This study aims to analyze the application of time management in the Terban Market construction project, with a focus on improving prioritization, efficiency, and effectiveness. The research method used is Earned Value Analysis (EVA) to evaluate project performance in terms of time and cost. Data were obtained through field observations and interviews as primary data, and project documents such as the S-Curve and Budget Plan (RAB) from the contractor as secondary data. The analysis results indicate that time management implementation still requires improvement, particularly in on-site execution, with several weaknesses identified during project implementation.
Co-Authors Ali Bahroni Andika Lubis Ayie Maulana Ikhsan Dwi Wahyudi Era Agita Kabdiyono Heri Permana Kiki Marjuki Mohamad Kamyah Muslim Untung Nabiyanka Ardhiansyah Norfi Janoko Sakti Panca setiawan Rachmat Mudiyono Rendi Agustiawan Rialdi Hikmahtiar Rifaldi Adi Saputra Slamet Imam Wahyudi Wisnu Akbar Wulan Muchidayat Yudhi Setyarahman Yuli Sulistiyohadi