Cost Analysis Required for the Construction of the Banjarsari Sluice Project, Sidoarjo Regency

Abstract

The Banjarsari sluice on the Sungai Pengairan in Sidoarjo Regency faces performance challenges, including sedimentation, structural damage, and water quality degradation from waste. The maintenance project prioritizes repairing the leaking floor to prevent structural failure. To optimize scheduling, the Critical Path Method (CPM) is recommended, enabling precise calculation of project start and end times as well as activity durations. Thus, we can determine the time lag between all existing activities. The analysis of the acceleration of work duration is also carried out by increasing the number of workers on the critical path, as well as finding the best solution to achieve the most efficient cost. The purpose of this study is to determine the amount of cost required by the Banjarsari Pintu Air maintenance project. In this study, the analysis was carried out using the CPM method and supported by Microsoft Project 2021 software. The results of the analysis show that the total cost for work on the critical path is Rp 117,732,707, which increased to Rp 124,366,707, resulting in a cost difference of Rp 6,634,000. The study concludes that while acceleration strategies increase costs, they effectively reduce project duration, ensuring timely completion. The findings underscore the importance of systematic planning and resource management in construction projects.