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Civil construction is characterized as one of the industrial segments of major importance for the economic and social development of the country. It is also known for being an industry that demands an expressive amount of materials and that considerably wastes its resources throughout its productive chain. For these reasons, the aim of this research was to analyze losses of materials used in the execution stage of the masonry service. The research consists of an exploratory case study that had as reference area two works of small residential developments in Monteiro-PB, where the masonry was monitored, being the most representative service in these buildings. All stages of production were observed, from the receipt of the material at the construction site until its application to finding the unconformities that influenced the material losses in the execution phase of the service. From then on, these unconformities were classified according to their nature, the moment of incidence and origin and then mapped in the process to be identified as flow or conversion activities. Subsequently, the lost material was measured in the production phase of the service, calculating the theoretical consumption of material expected to be used in the masonry and the estimated consumption of material expended for its production. By comparing the amount of predicted input with the consumed, it was possible to establish the percentage index of material lost during the productive process of the masonry. As a result, the relation of lost material and the main causes that subsidized its triggering was obtained. However, it is interesting to emphasize the materials control, and it is up to the managers to seek these improvements through the mechanisms that aim to increase the efficiency of the productive process of the constructions.

Análise das perdas de materiais no serviço de alvenaria: estudo de caso realizado em obras de edificações residenciais de pequeno porte