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All Journal Potensi : Jurnal Sipil Politeknik Jurnal Inovasi Konstruksi
Simanullang, Joel M
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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Identifikasi Added and Non-Value Added activities Melalui Analisis Just In Time Pada Pekerjaan Pondasi Bore Pile Simanullang, Joel M
Jurnal Inovasi Konstruksi Vol 3, No 2 (2024): October
Publisher : Politeknik Pekerjaan Umum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56911/jik.v3i2.119

Abstract

A construction project is a complex job because it involves various resources to achieve the targets of the project. Management of these resources must be carried out with the aim of achieving high productivity. The aim of this research is to determine activities that have added value (Value Added activity) and activities that do not have added value (non-Value Added activity) as well as to evaluate the productivity efficiency of machines and tools in Bore Pile foundation work. The author uses the Just In method Time to identify the effectiveness and efficiency of Bore Pile foundation work. Just In Time will focus on reducing waste so that it can increase productivity. The application of the Just In Time method is only used for resources, namely machines and tools needed for a job. This method will be assisted by the Manufacturing Cycle Effectiveness concept to measure the percentage of Value Added activities. The research results show that there are still several machines or heavy equipment with a percentage of non-Value Added activity that is greater than Value Added activity. This is caused by quite a lot of waiting time and Moving time, resulting in smaller Value Added activity.
Analysis of Excavator Productivity in Bore Pile Foundation Drilling Using the 5W + 1H Method Simanullang, Joel M; Nugroho, Agus
Potensi: Jurnal Sipil Politeknik Vol. 27 No. 2 (2025): Potensi: Jurnal Sipil Politeknik
Publisher : Department of Civil Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/potensi.v27i2.6149

Abstract

The increasing traffic congestion has driven the development of the Solo–Yogyakarta–Yogyakarta International Airport toll road project, which involves drilling bore piles using heavy excavators. This study aims to evaluate excavator productivity by analyzing the percentage of value-added activities (VAA) and non-value-added activities (NVAA), using the Manufacturing Cycle Effectiveness (MCE) method combined with the 5W + 1H approach. The novelty of this research lies in integrating MCE and the 5W + 1H framework for analyzing construction equipment, providing a structured framework to identify the root causes of productivity losses beyond conventional time–motion studies. The results from three case samples reveal that NVAA dominates VAA, with idle time being the primary factor that reduces productivity. These findings underscore the importance of enhancing interteam coordination, optimizing work sequencing, and minimizing standby periods to improve excavator efficiency in bore pile operations. Practically, the proposed analysis provides construction managers with actionable insights to minimize inefficiencies, reduce project costs, and improve scheduling reliability. However, the study is limited by its focus on a single project location and three observation samples, which may restrict generalizability. Future research should extend the method to larger datasets and diverse project settings to strengthen its applicability
Co-Authors Agus Nugroho, Agus