Estudo comparativo entre dois sistemas construtivos: placas de concreto pré – moldadas e alvenaria estrutural

Abstract

This research analyzed two distinct construction systems: precast concrete panels and structural masonry, aiming to compare execution time and the inherent advantages and disadvantages of each method. The selected housing developments were located in Vitória da Conquista, Bahia, and featured similar architectural layouts. A total of 291 houses were built using the precast concrete panel system, while 28 buildings were constructed with structural masonry. The average execution time per lot for the precast system was 27.81 working hours, compared to 36.9 hours per lot for the masonry system. It is important to note that the structural masonry houses had a 30% larger floor area. When applying the Unit Production Rate (RUP) to assess service productivity, structural masonry demonstrated greater efficiency, with a productivity rate 23.5% higher than the precast concrete panel system. The main discrepancies between the methods were that the precast system had a shorter execution time, while structural masonry exhibited higher productivity. Various factors may influence these results, including local conditions, rainfall, and material availability. Additionally, it is essential to consider industry benchmarks such as SINAPI (National System of Construction Costs and Indexes) and TCPO (Price Composition Table for Budgets) to evaluate productivity against sector standards. The findings of this study provide a solid information base to support the selection of the most suitable construction system, considering factors such as execution time, productivity, and total building area. Therefore, it is important to emphasize that the final decision should be preceded by a more detailed analysis that considers the specific characteristics of each project.