Gerenciamento do tempo utilizando a ferramenta “LAST PLANNER System” – Lean Construction

Abstract

The construction sector has peculiar characteristics that imperceptibly generate waste. This can be exemplified because the sector uses, mostly, artisan processes to automated processes. However, the wastes are not restricted only the execution phase; in the project phase, budgeting and planning, they are also present. In order to protect the construction sector these and others wastes, Lauri Koskela devised in 1992 a management philosophy based mainly on the Toyota Production System (STP), which was named Lean Construction. This denomination came from the production philosophy within the Toyota factories, which in the 90s was known in academic and professional circles as Lean Production. Through the adaptation of Lean Production to construction, Koskela consolidated this innovative way to manage the production making it the most reliable and predictable sector. This paper will present the Lean Construction from the historical until to the principles that govern it, with some essential tools that guarantee the development of philosophy. However, the main aim is not to present ways to reduce waste during the execution phase, where they are more noticeable, but in the planning stage and production control often ignored by managers. One of the tools created in the dimension of planning from the Lean philosophy was the Last Planner System (LPS), which larger objective is to protect the production of variabilities starting from the planning stage to execution. This tool should be seen as an improvement made in the already traditional process of Planning and Production Control (PCP), it also takes the form of a philosophy and not a new methodology. Through the Last Planner tool, its possible to formalize a safer planning, effective and “lean”, free of uncertainties and constraints, making the production environment more dynamic and secure