Avaliação do impacto do uso da técnica de linha de balanço no gerenciamento da cadeia de suprimentos em obras de rodovia

Abstract

A well-executed construction planning has the power to ensure the continuous flow of production, making the company perform its activities with higher quality and lower cost. At the same time, the Supply Chain Management (GCS) suggests performing the construction steps as a continuous stream of value generation rather than just a series of individual activities as the traditional management approach proposes. There are few studies that seek to relate these two concepts that are indispensable to any highway construction project. The present thesis aims to evaluate the impact that the change between two techniques of planning with different approaches, the Program Evaluation and Control Technique / Critical Path Method (PERT / CPM) and the Line of Balance (LoB), causes in the logistic flows (flows of capital, inputs and information) that define the Highway Construction’s Supply Chain. This objective was achieved qualitatively by the Bibliographic Review and quantitatively by the application of a case study with the planning data of a highway project of a large Brazilian infrastructure construction company, whose original planning according to the PERT/CPM technique and reprogrammed by the LoB technique. The comparison between the data corresponding to each planning scenario, such as Physical-Financial Schedules, Histograms and Flow Curves, were the parameters used as a basis of comparison that made it possible to infer that the planning according the LoB presented a more adequate treatment of the logistical flows and, consequently, of the supply chain because its graphs have more levels than abrupt variation, indicating the continuous flow of inputs and capital. The LoB technique, based on its principles of team formation and activity packages, prioritizes the continuous flow of information.