Análise de custos diretos de lajes mistas steel deck e comparativo de custos com lajes pré-moldadas com vigotas treliçadas

Abstract

This study brings information about the steel deck composite slab and a cost comparative with pre-cast slabs with trussed joists. Starting from the history of steel deck, vantages and disadvantages, an analysis of the current national and international technical standards, materials, construction process, study about the structural behavior and a detailed design walkthrough following the Brazilian standard. Likewise, information about pre-cast slabs with trussed joists are shown. After that, analysis and unitary cost composition for both systems are presented. During the study, it is possible to notice that the steel deck element is responsible for the majority of the costs of the steel deck composite slab. In conclusion, the steel deck composite slab has shown to be costlier than the pre-cast slabs with trussed joists in all studied cases.