An Evaluation of the Lookahead Planning Function in Last Planner® System

Last Planner® System (LPS) has been lauded as a critical improvement methodology for project execution. Best results accrue when all functions are utilised. However, in practice, due to lack of knowledge and appreciation of the LPS cycle and complementary interactions required, teams are not achieving optimal outcomes. Effective Lookahead planning that reduces variation and ‘making-do’ are primary concepts for facilitating better construction task execution. This study goes ‘back to basics’ and explores how improved Lookahead planning can enhance project delivery. It utilised a mixed-methods approach with case study design, encompassing interviews, project documentation, and existing research data. The case project utilised Visual Management, Takt concepts, Scrum, and Flow Walks to engage site supervisors proactively and collaboratively in diligent Lookahead planning. Findings demonstrate involvement of the trades persons in task breakdown and design of the operation ensured better activity and trade flow resulting in improved task execution. Proactive and diligent constraint screening and flow walks resulted in increased constraint identification and better on-time resolution, while also developing a workable backlog. Conducting a First-Run Study resulted in immediate productivity improvement. The basics of production planning and control are an essential component of Lean Project Delivery. The research highlights the value in practitioners exploring original literature in more depth to gain better knowledge and skills of the Lookahead planning function.