LAST PLANNER SYSTEM: IMPLEMENTATION, EVALUATION AND COMPARISON OF RESULTS IN THE CONSTRUCTION OF A SOCIAL HOUSING PROJECT IN CHILE

Abstract

This paper shows a detail implementation and lessons learned from the Last PlannerSystem (LPS) in the context of a social housing program of the government of Chile.Specifically the “Condominio Juanita Aguirre” (CJA) project in the commune of Conchaliin Santiago, Chile, which includes the construction of 80 apartments of 56 m², in buildingsof 4 stories high on a contractual period of one year. We followed the trajectory from thegeneral contractor perspective, Oval Company, which has extensive experience in theconstruction of social housing. This company has obtained highly variable projects resultsin the past, and thus the company decided to implement the Last Planner System (LPS) inthe CJA project. This research measures the results of the implementation throughout theconstruction process. Additionally, we make a comparison against previous projects ofsimilar characteristics built by the same company with traditional management systems.Finally, the research shows that CJA project achieved significant improvements comparedto previous projects, in the areas of: construction schedule, construction costs, safety, andfinal quality of housing.