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All Journal Jurnal Proyek Teknik Sipil Jurnal Talenta Sipil Advance Sustainable Science, Engineering and Technology (ASSET) Journal of Green Science and Technology
Velantika, Griselda Junianda
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Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Transportation

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Perbandingan Produktivitas Excavator dan Dump Truk Sebelum dan Setelah Hujan Anggraeny, Anggi Dwi; Muzdhalifa, Rencany Maura; Putra, I Nyoman Dita Pahang; Velantika, Griselda Junianda
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.846

Abstract

The construction project of the JLS Lot 3 Pantai Serang - Sumbersih is a concrete example of the government's efforts to enhance connectivity and infrastructure development in Indonesia. Heavy equipment such as excavators and dump trucks play a crucial role in enhancing efficiency and productivity in this project. Infrastructure development projects often encounter obstacles such as delays and high operational costs. Rain is one of the causes of those obstacles. One way to get a clear picture of the impact of rain is to conduct a comparative analysis of heavy equipment productivity before and after the rain. Evaluation of the decrease in productivity is necessary so that mitigation measures can be taken to minimize its impact on the project. This study aims to analyze and compare the productivity of excavators and dump trucks under conditions before and after rain on the JLS Lot 3 project. This study uses a quantitative method by analyzing primary data obtained through observation of the cycle time of excavators and dump trucks before and after rain in the field. The excavator's productivity before the rain was higher, at 1506.27 m3/day, compared to after the rain, at 854.33 m3/day. The productivity of the dump truck before the rain was also higher, at 259.60 m3/day, compared to after the rain, at 138.67 m3/day. The cause of the difference in productivity between the excavator and dump truck before and after the rain is the muddy and waterlogged field conditions, which lead to changes in the excavator's digging speed, per-cycle production, and the dump truck's rate while moving from the excavation site to the disposal site.
Financial Performance Assessment of Flat Buildings Using Life Cycle Cost and Cost–Benefit Analysis Velantika, Griselda Junianda; Mikhail, Reguel; Putri, Karina Meilawati Eka; Widowati, Elok Dewi; Alghiffary, Rizqi; Akbari, Muhamad Fauzan
Advance Sustainable Science Engineering and Technology Vol. 7 No. 1 (2025): November-January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i1.1005

Abstract

Buildings resulting from construction projects are durable assets and decisions related to construction projects have enduring impacts. In many cases, building owners prioritize only the initial costs, such as building design, construction, and equipment costs, while neglecting the future operation and maintenance costs. This research studies life cycle costing (LCC) analysis to evaluate the financial feasibility of urban housing. The LCC calculates all the costs incurred and benefits during the building's operation. The cost is generated from construction, operational, and maintenance costs. At the same time, the benefit breaks down into flat rental costs, retail rental costs, and parking costs. The costs incurred are estimated over 25 years, and the parameters of feasibility are net Present Value (NPV), Benefit-Cost Ratio (BCR), and Internal Rate of Return (IRR). The study generates negative NPV, BCR < 1, and 0.61% of IRR. It indicates that the project is not feasible. This research gives alternatives to make the project feasible. This study employed a trial-and-error approach to ascertain the viability of investing in flat rentals by systematically adjusting rental rates. Incremental adjustments to rental rates are tested by a series of rate hikes of 50%, 100%, 150%, and 200% using a trial-and-error approach. The project will become feasible if the flat rate increases to 150-200% of the initial rental rate.
Analisis dan Desain Modifikasi Jembatan Rangka Busur Baja dengan Fluid Viscous Damper Menggunakan SAP2000 Akbari, Muhamad Fauzan; Saputra, Yohanes Hadi; Alghiffary, Rizqi; Velantika, Griselda Junianda; Eka Putri, Karina Melawati; Widowati, Elok Dewi
Jurnal Proyek Teknik Sipil Vol 8, No 2 (2025): September
Publisher : Civil Infrastructure Engineering and Architectural Design

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/potensi.2025.29068

Abstract

ABSTRACT The bridge design modification presented in this study focuses on implementing a steel arch truss system combined with Fluid Viscous Dampers (FVDs) to improve structural efficiency and seismic resilience. The steel arch truss enables a longer main span with fewer intermediate supports, offering construction advantages, enhanced stability, and improved aesthetics. Additionally, the integration of FVDs aims to reduce structural displacements during seismic events, thereby minimizing potential post-earthquake damage.The object of this study is referred to as Bridge XYZ, assumed to be one of the key bridges in Gresik Regency, serving as a vital connection between Gresik and Lamongan. This bridge plays a strategic role in supporting mobility and logistics distribution in the region, making structural optimization and seismic mitigation essential. The research methodology includes data collection and literature review, followed by the structural redesign process. Structural modeling and analysis were conducted using SAP2000 software, adhering to Indonesian bridge and seismic design standards. The primary objective is to develop a single-span bridge configuration using steel orthotropic decks for a lighter superstructure and to evaluate the effectiveness of FVDs in reducing seismic-induced displacements. The analysis results show that the redesigned bridge utilizes BJ55 steel orthotropic deck plates with T-profile ribs, cross girders with WF profiles, tie beams with box girders, and Macalloy suspension cables. The application of FVDs successfully reduced seismic displacement by 3% to 45%, demonstrating their effectiveness in enhancing the bridge’s structural resilience.KEYWORDS Fluid Viscous Damper; SAP2000; Steel Arch Truss.
Analysis of Success Factors: Self-Management System Using The AHP Method At The Ji’rona Building Project ‘Aisyiyah Hospital Bojonegoro Rohmat Satriawan, Earlangga; Putra, Nyoman Dita Pahang; Velantika, Griselda Junianda
Journal of Green Science and Technology Vol 9 No 2 (2025): Journal of Green Science and Technology Vol. 9 No.2 September 2025
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v9i2.10451

Abstract

Construction projects require an effective and efficient project management system to achieve the expected development goals. One of the developments in project management is the production of a self-managed project management system, which is a management system that the project owner manages by prioritizing the use of their resources. This study aims to determine the priority scale of the factors and criteria for success in self-management in the Ji’rona Building Construction Project of RSAB. The data collection technique used a quantitative descriptive questionnaire survey in this study. The study involved 24 respondents, including project owners, planning teams, implementation teams, supervisory teams/CM, and self-management expert respondents. The data analysis method uses the AHP (Analytical Hierarchy Process) method to make it easier to make decisions based on several alternative self-management success factors. Based on the results of data analysis, the research identified the results of ranking criteria and sub-criteria in the form of a diagram, as well as changes in the hierarchical structure of the research on the success factors of self-management success. The study concluded that the priority factors for the success of self-management in the Ji’rona RSAB Building Construction Project were quality 0.124, communication 0.120, risk management 0.116, stakeholder satisfaction 0.111, cost 0.110, administration 0.108, resources 0.107, time 0.101, and characteristics of the place 0.089.
Co-Authors Akbari, Muhamad Fauzan Alghiffary, Rizqi Anggraeny, Anggi Dwi Eka Putri, Karina Melawati Mikhail, Reguel Muzdhalifa, Rencany Maura NYOMAN DITA PAHANG PUTRA, NYOMAN Putra, Nyoman Dita Pahang Putri, Karina Meilawati Eka Rohmat Satriawan, Earlangga Saputra, Yohanes Hadi Widowati, Elok Dewi