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All Journal AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment)
Elok Dewi Widowati
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Energy Environmental Science

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Analysis of Management Reserve and Schedule Slip in a Steel Truss Bridge Project Dina Kurnia Shanty; Putra, I Nyoman Dita Pahang; Elok Dewi Widowati
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 2 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i2.1001

Abstract

Project implementation delays (schedule slips) not only affect project completion time but may also influence the adequacy of the project’s cost reserve (management reserve). This study aims to analyze the relationship between schedule slip and management reserve using the Earned Value Analysis (EVA) approach through the Estimate at Completion (EAC) and Variance at Completion (VAC) parameters. The study utilized planned S-curves, weekly progress reports, and the project contract value as the Budget at Completion (BAC) from a steel truss bridge construction project with a planned duration of 35 weeks and an actual completion time of 36 weeks. EVA parameters were evaluated at each reporting period. The Actual Cost of Work Performed (ACWP) was determined using the Project Implementation Budget (Rencana Anggaran Pelaksanaan/RAP) approach at 90% of the contract value, while the management reserve was established at 10% of the BAC. The results demonstrate that schedule slip is directly associated with an increase in the EAC value, leading to a reduction in the VAC value toward the management reserve threshold. Conversely, improvements in schedule performance increased the VAC value above the management reserve limit, indicating that the project’s cost reserve remained secure. Although the project experienced a one-week delay at completion, the VAC value remained within the management reserve threshold, confirming that the management reserve was still adequate. These findings indicate that project delays significantly affect the dynamics of management reserve conditions through changes in the estimated final project cost. Contribution to Sustainable Development Goals (SDGs):SDG 9: Industry, Innovation and InfrastructureSDG 8: Decent Work and Economic GrowthSDG 11: Sustainable Cities and Communities
Evaluation of Constructability Factors on The Implementation Budget Plan Based on Importance Performance Analysis Shalwa Norendina Aziz; Putra, I Nyoman Dita Pahang; Elok Dewi Widowati; Griselda Junianda Velantika
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 2 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i2.1002

Abstract

The rapid growth of the construction industry has increased the complexity of project implementation; however, in practice, cost overruns still frequently occur due to the suboptimal application of constructability during the planning and execution phases of projects. This situation results in a discrepancy between the planned budget and actual on-site expenditures. This study aims to identify the constructability factors that influence the implementation of the budget plan, analyze. The importance and performance levels of each factor, and evaluate the gaps as a basis for determining improvement priorities. The study employs a quantitative approach using a survey method by distributing questionnaires to contractors, followed by analysis using the Importance-Performance Analysis method. The results indicate that the average importance level of 3.737 is higher than the performance level of 3.368, suggesting that the implementation of constructability factors has not fully met the expected level of importance. A total of 16 variables had a conformity level below 100%, thus falling into the improvement priority category, while several other variables demonstrated performance that met or exceeded their importance levels. The contribution of this study lies in the integration of constructability analysis with the evaluation of the efficiency of the implementation budget plan using the IPA method to determine priorities for improving the performance of constructability factors Contribution to Sustainable Development Goals (SDGs):SDG 9: Industry, Innovation and InfrastructureSDG 11: Sustainable Cities and CommunitiesSDG 12: Responsible Consumption and Production
Co-Authors Dina Kurnia Shanty Griselda Junianda Velantika NYOMAN DITA PAHANG PUTRA, NYOMAN Shalwa Norendina Aziz