Optimization Analysis of Heavy Equipment Combination in the Soil Pilot Project, Viewed From the Time and Cost of the Bendo Building Development Project in Ponorogo District, East Java

Bendo Dam is one of the dams proposed in the Bengawan Solo River Basin Development Project Master Plan in 1974. The construction of the Bendo Dam is one of the efforts to develop the Ponorogo Regency which is related to the development of water resources, to meet various community needs such as irrigation water supply, domestic raw water, and industry as well as flood control and tourism. For the analysis of optimizing the combination of heavy equipment in a landfill project, productivity and number of heavy equipment are calculated and making several types of heavy equipment combinations with different types and types. The combination is Combination I, Combination II, Combination III, Combination IV. Based on the calculation of heavy equipment productivity, the most effective and efficient combination is Combination IV because in this combination the costs incurred are relatively smaller than using other combinations. It can be seen from the productivity and the number of each heavy equipment as follows: Excavator 0.93 m3 (PC-200) 36 units 14 days, 12 m3 Dump Truck 227 units 14 days, Bulldozer 155 Hp (D68) 5 units 13 days, Roller BW-141 72 units 14 days. The most efficient total cost to complete the Bendo Dam embankment project work is: Rp. 21,611,921,049