Análise da efetividade da aplicação da ferramenta gerencial Last Planner em obras de curta duração

Abstract

In order to meet the demand for services, the construction industry has been looking for alternatives that could improve and facilitate the production planning and control (PPC) process. A management tool that has been used a lot is the Last Planner System. Thusly, the present study had as general objective to analyze the effectiveness of the application of the Last Planner System in short duration construction works. This work used the case study method, applying the management tool in five short term construction works in the city of Curitiba - PR, during the months of April to June 2019. For the application of the Last Planner System there was initially elaborated a macro schedule, then a weekly schedule with daily follow up of established goals, and problem monitoring using a spreadsheet develop using the software Microsoft Excel. After weeks of follow up, it was possible to identify the main causes of non-compliance with the targets established by the weekly schedules. In commercial building works, non-compliance with the weekly targets occurred mainly because of an overestimation of the team's production over the course of the week, which occurred in 21% of the cases, the second cause with the highest occurrence was the delay of suppliers, which corresponded to 16%. In the corporative building work, the main cause of the low PPC level were the numerous project changes that occurred during the work, representing 33%, which led to problems with reworking and execution errors (18%). The databases gathered by the conclusion of the work have allowed better insight of the problems and will be used as an aid on planning and decision making for future works, improving the efficiency of the processes involved in construction.