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All Journal REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development
R. Winanda, Lila Ayu
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Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Environmental Science Transportation

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Penjadwalan Berbasis Risiko dengan Program Evaluation and Review Technique untuk Mendukung Implementasi BIM 4D pada Proyek Jembatan Febrianti, Imelda; R. Winanda, Lila Ayu; Roostianawaty, Nenny; Kartika, Deviany; F. Anugerahputra, Krisna
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 7 Issue 1 (March 2026)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v7i1.819

Abstract

The construction industry plays strategic role in national infrastructure development, particularly in bridge projects that are characterized by high complexity and significant implementation uncertainty. Bridges function not only as physical connections between regions but also as critical infrastructure supporting public mobility and economic growth. Therefore, accurate scheduling methods that are capable of accommodating the risk of time delays are required. This study to analyze the total project duration of bridge project risk-based approach through the integration of three-dimensional Building Information Modeling (BIM 3D) and the Program Evaluation and Review Technique (PERT). The analysis begins with the development of three-dimensional bridge structural model using Tekla Structures to generate bill of quantity that includes structural material volumes. These quantity data basis for probabilistic duration estimation using PERT method through expert judgment, which involves optimistic time, most likely time, and pessimistic time. The BIM 3D modeling results indicate total reinforcement steel volume of 24,343.4 kg and concrete volume of 274.1 m³. Furthermore, risk-based scheduling using the PERT method analyzed with the Precedence Diagram Method (PDM) produces total project duration of 190 days with completion probability of 50%. This result indicates potential risk of delay that should carefully project time control
Pemodelan Causal Loop Diagram Percepatan Proyek terhadap Biaya dan Kualitas Konstruksi: Pemodelan Causal Loop Percepatan Proyek terhadap Biaya dan Kualitas Konstruksi D. Maharani, Avrilia; R. Winanda, Lila Ayu; Wijayaningtyas, M.; Kartika, Deviany
REKONSTRUKSI TADULAKO: Civil Engineering Journal on Research and Development Vol. 7 Issue 1 (March 2026)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/renstra.v7i1.820

Abstract

Construction project acceleration is a strategy commonly implemented to overcome schedule delays; however, its application often results in increased costs and reduced work quality when not managed in a systematic and integrated manner. This condition reflects the presence of complex and dynamic interrelationships among time, cost, and quality as the three main elements within the triple constraint framework, which cannot be adequately analyzed using linear approaches. Failure to understand the interactions among these three aspects may lead to project inefficiencies and decreased overall performance. Therefore, an approach capable of explaining cause–effect relationships and feedback mechanisms within construction project systems is required. This study aims to model the causal relationships between project acceleration, cost, and quality in order to obtain a structural understanding of their dynamic interactions. The research method employs a system dynamics approach using causal loop diagram modeling supported by Vensim PLE 10.4.0 software. The research stages include system definition to determine boundaries and identify key variables, model formulation based on a literature review to establish intervariable relationships, and the development of causal loop diagrams to illustrate interactions and feedback structures within the system. The modeling results indicate that the developed system consists of twenty feedback loops and forty-six one-way relationships representing interactions among acceleration, cost, and quality factors within the context of project acceleration. These findings confirm that project acceleration, cost, and quality are not independent variables but are dynamically interconnected. The proposed model provides a conceptual contribution to strengthening systemic understanding in construction project management and can serve as a foundation for strategic decision-making related to more effective and sustainable project acceleration
Co-Authors D. Maharani, Avrilia Deviany Kartika F. Anugerahputra, Krisna Imelda Febrianti Roostianawaty, Nenny Wijayaningtyas, M.