Optimizing heavy equipment combination in excavation work of a dam channel construction to support SDG 9: A case study in the Jragung Dam Project

¹ Departement of Civil Engineering Technology, Faculty of Applied Science and Technology, Universitas Negeri Yogyakarta, Indonesia
² Department of Civil Engineering and Planning, Faculty of Engineering, Universitas Negeri Yogyakarta, Indonesia

^* Corresponding author: satoto.nayono@uny.ac.id

Abstract

This research aims to analyze the productivity of the excavator and dump truck, evaluate the most efficient combination of excavator and dump truck, and determine the heavy equipment cost required to complete the Jragung Dam channel excavation project. Data collection in this study was carried out using interviews and field observations at the construction site. The results of this study are: (1) excavator productivity was 113.84 m³/hour and dump truck 29.30 m³/hour; (2) alternative combination 1 consists of one excavator unit and four dump truck units, alternative combination 2 consists of two excavator units and eight dump truck units, alternative combination 3 consists of three excavator units and twelve dump truck units; (3) the cost of completing the project on alternative 1 requires 4,836 hours and costs for Mitsubishi dump trucks only is IDR 8,147,774,673.48, Hino dump trucks only is IDR 8,368. 444,351.80 and a combination of two types of dump trucks (Hino and Mitsubishi) is IDR 8,368,444,351.80, alternative 2 requires 2418 hours and costs for Mitsubishi dump trucks are IDR 8,121,163,155.04, Hino dump trucks is IDR 8,562,340,865.57, and a combination of two types of dump trucks is IDR 8,341,752,010.31, alternative 3 takes 1612 hours and costs for Mitsubishi dump trucks amounting to IDR 8,116,260,073.48, Hino dump trucks amounting to IDR 8,557,599,430.12, and a combination of two types of dump trucks amounting to IDR 8,336,929,751.80. Alternatives 2-3 with Mitsubishi dump trucks are more suitable for the project as they have shorter work durations and cheaper costs. By optimizing equipment utilization and identifying cost-effective solutions for the Jragung Dam channel excavation, this research contributes to SDG 9 (Industry, Innovation, and Infrastructure) by promoting efficient and sustainable infrastructure development.