Análise de custo da construção de casas populares com paredes de concreto moldadas in loco

Abstract

The growing demand for affordable housing in Brazil has intensified as the country develops and its population increases. To meet this need, the federal government implements housing programs aimed at reducing the housing deficit and ensuring access to housing for low-income populations. In this context, it becomes essential to adopt more efficient construction systems capable of optimizing resources and reducing project execution time. Among the modern alternatives, the cast-in-place concrete wall system stands out, offering advantages such as shorter construction time, material savings, and reduced labor requirements. Thus, this study presents a comparative cost analysis between two construction systems: cast-in-place concrete walls and the conventional system, which consists of reinforced concrete structures with ceramic block masonry. The methodology was based on a case study of a project carried out in Novo Sarandi, Paraná, Brazil, where 30 housing units were built using the cast-in-place concrete wall system. The case study enabled the collection of actual cost data for the execution of a single residence using this construction system. Additionally, a detailed budget was prepared for the same residence executed with the conventional system. The results indicate that the construction cost using the cast-inplace concrete wall system is approximately 25% lower than that of the conventional system, demonstrating its economic feasibility and constructive efficiency.