Comparativo de produtividade e custo entre malhas soldadas em máquina automatizada e malhas ponteadas no local da obra

Abstract

Following the Brazilian market trend, the average percentage cost of labor involved in the construction has grown and today represents a significant value in the total costs of a building. As a result, new industrialization solutions emerged in this market with the goal to increase the productivity of the employees involved and to reduce the labor cost. Thus, this work aims to check a change in the percentage costs involved in civil construction and to compare the productivity and the cost difference in the execution and assembly stage of positive reinforcement using a conventional solution and an industrialized solution. For this, the number of collaborators involved in the execution and assembly and the time spent for assembly using two different methods were determined. Finally, it has been concluded that, in 2010, labor costs has exceeded materials costs, the largest cost of construction. In addition, it has been established that the use of a factory welded rebar mesh, an industrialized solution, when compared to the use of bars mounted on the spot, has, in man-hour per m², 3.62 times higher performance and has, in reais per kilo, 3,4 times cheaper cost.