Productivity Analysis of Piling Work for Coastal Safety Construction in Jakarta Bay Phase 6 Package 4

Abstract

This study aims to evaluate the productivity of spun pile installation during the construction of coastal safety structures in Jakarta Bay, Phase 6, Package 4. The piling work, scheduled for 303 days with 363 piles to be driven, faced significant deviations between planned and actual productivity rates, leading to delays and increased costs. The primary objective of this research is to identify and analyze the factors causing these discrepancies. Field observations, interviews with site personnel, and secondary data analysis were employed to gather information on productivity levels. The results show that effective productivity was 3.33 piles/day (9.99 m/h), while field and contract productivity were 3.2 m/h and 3.59 m/h, respectively. The discrepancies were largely attributed to factors such as weather conditions, equipment limitations, and community disturbances. This study underscores the need for improved planning, monitoring, and control measures to mitigate these disruptions and enhance piling productivity in future projects. The findings offer valuable insights for optimizing piling operations in similar coastal construction endeavors.