ANALISIS PENGARUH WAKTU KERJA OPERATOR TERHADAP PRODUKTIVITAS ALAT BERAT EXCAVATOR PADA PROYEK INFRASTRUKTUR PABRIK WINE TABANAN, BALI

Abstract

Heavy equipment productivity is a crucial indicator in assessing the efficiency of construction projects. This study aims to analyze the impact of operator working hours on the productivity of excavators in the infrastructure development of a wine factory located in Tabanan, Bali. The project utilized two types of excavators—LIUGONG 920 E and KOBELCO SK 200—with observations conducted over a two-week period. External factors such as site conditions and material types were also considered as influencing variables in equipment performance. The research employed a quantitative descriptive approach, with data collected through field observations, interviews, and documentation. The data were analyzed using productivity calculation methods derived from the Heavy Equipment Management course material (Kadek Adi Suryawan, S.T., M.Si.), aiming to determine the relationship between operator working hours and excavator production volume. The findings revealed specific time periods that significantly affected productivity. The most productive hours were recorded in the morning—specifically the first hour (08:00–09:00)—and after the lunch break, during the fifth hour (13:00–14:00). A decline in productivity was observed approaching midday and late afternoon. These results contribute to more effective planning of operator schedules, with the goal of enhancing excavator efficiency. The study’s insights are expected to serve as a reference for contractors in establishing optimal working hours for heavy equipment operators.

Keywords: Operator working hours, Excavator productivity, Construction project