Labor Productivity in ABC Building Construction Project Surabaya Using Time Study Method

Abstract

Labor productivity is a critical indicator in determining the efficiency of construction project execution. This study aims to analyze labor productivity in reinforcement and formwork work at the ABC Building construction project in Surabaya using the Time Study method. This method measures actual working time in the field and converts it into standard time as a basis for productivity assessment. The measurement results show that slab reinforcement work has the highest productivity at 723.62 kg/hour, while beam reinforcement shows the lowest at 170.04 kg/hour. For formwork, slabs recorded the highest productivity at 63.16 m²/hour, while columns only reached 11.44 m²/hour. These variations are influenced by factors such as job position (vertical or horizontal), working space, location accessibility, and technical complexity. Non-ergonomic working positions, such as prolonged bending or working at height, also reduce efficiency. This study demonstrates that the Time Study method is effective in evaluating productivity differences based on job types. The findings are expected to serve as a reference for improving labor efficiency in the construction field.