Comparativo de custos entre arranjos estruturais compostos por lajes maciças e nervuradas, moldadas in loco para um projeto real de edifício comercial em Delmiro Gouveia – AL

Abstract

During the design of a structural solution, the use of the most appropriate construction method to be applied is sought. For this, it is essential to consider factors such as safety, quality and economy of the work, in order to choose the most appropriate structural arrangement for the proposed project, so as not to interfere with its functionality. The study carried out in this work draws a comparison between structural arrangements carried out with two distinct slab systems, in a 4-storey commercial building type. Economically evaluating which slab technique presentes the structural system with the most cost-effective solution, in order to elucidate which technique is more economically viable. The model structural design developed in this work was carried out using the Eberick V10 computational software, which allowed the creation of a table of input quantities (form, concrete and steel) particular to each method. From this, budgets were drawn up for each type of structural arrangement through the Sergipe Works Budget (ORSE) and the National System of Survey of Costs and Indexes of Civil Construction (SINAPI) platforms, enabling the verification of the reduction of significantly expensive inputs, such as the reduction of 20% in the volume of steel, 63,9% in the volume of concrete and almost 96% in the formwork area. Thus, the use of the ribbed slab was proven to be the most economically viable technique.