Viabilidade da utilização de estruturas pré-fabricadas de concreto armado em uma edificação residencial

Abstract

The construction sector has a relatively delayed technological development when compared to other branches of industry. In Brazil, this problem is even more noticeable, and one of the reasons for this is the predominance of the use of reinforced concrete structures molded in the site, to the detriment of other techniques, including precast concrete. Thus, the precast structures of reinforced concrete are an alternative for the improvement of the current conditions of production in the construction, since the industrialized process provides several advantages. For residential buildings, however, the use of precast elements faces adversities, such as the particularities of each architectural design. This present study aims to evaluate the viability of using precast reinforced concrete structures for a two-floors residential building. For this, a structural design was developed for reinforced concrete structures molded on site and another for precast concrete structures for the building in question, resulting in a budget for each situation, which allowed the realization of a comparison between the scenarios, considering the economic perspective. It was observed that the precast structure presented approximately a 7% lower total cost than the reinforced concrete structure molded on site, implying, for this specific case, that the use of precast elements of reinforced concrete proved viable.