Viabilidade econômica entre o emprego de laje maciça e nervurada para um sobrado no município de Pombal PB.

Abstract

In structural projects, the proper choice of slab type is of paramount importance. importance when looking for structural efficiency and cost reduction. In that sense, in general, solid and ribbed slab solutions are commonly adopted in small and medium-sized residential works, as well as high-rise buildings. multiple floors. However, it is observed that these solutions have different characteristics between them, which can highlight the weight high, big consumption of concrete, steel and formwork, as well as limitations of existing services in each region. The aim of this work is to present a feasibility comparison economical in the use of solid slab, ribbed with trussed and ribbed joists with plastic buckets for a townhouse located in the municipality of PombalPB. With with the aid of the Eberick software, it was possible to obtain the quantities of energy consumption concrete, steel and forms. Input cost data were collected in the municipality of Pombal - PB and nearby regions. Among the three models of slabs studied, the ribbed slab with lattice beams proved to be more economical and efficient, showing a reduction in costs of 14.80%, in relation to the model with massive slab. The same conclusion applies in relation to the loads transmitted to the foundations, where the model with lattice slab presented a transmission 6.31% smaller when compared to the solid slab model.