Analisis Produktivitas Alat Berat pada Pekerjaan Timbunan Kembali DPT Kiri Intake Kanan Proyek Bendungan Karangnongko
Analisis Produktivitas Alat Berat dalam Pekerjaan Timbunan Kembali DPT Kiri Intake Kanan pada Proyek Pembangunan Bendungan Karangnongko
Keywords:
heavy equipment, backfill, effectiveness, dam, construction managementAbstract
Backfill work DPT on retaining walls is a critical stage in dam construction as it affects structural stability. This study aims to analyze heavy equipment productivity and time effectiveness in the backfill work of the left retaining wall at the right intake of the Karangnongko Dam project, using a quantitative method through field observation and cycle time analysis.
The results show that the Kobelco SK200-10 excavator and Komatsu D21P-7E bulldozer achieved productivities of 56.73 m³/hour and 56 m³/hour, respectively, with 100% time effectiveness, indicating alignment between planning and execution. The Mitsubishi Fuso dump truck demonstrated higher efficiency, achieving 133% time effectiveness by completing work faster than planned. In contrast, the LiuGong 6611E vibratory roller exhibited high productivity but low effectiveness (-133.3%) due to excessive idle time. Overall, the study highlights that optimal equipment performance depends on proper synchronization and operational management. Efficient utilization of certain equipment can compensate for inefficiencies in others, ensuring balanced project time and cost performance.
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