Índices e taxas de consumo de materiais em função da tipologia estrutural

Abstract

In this work, carried out a quantitative study on the consumption of materials for the elements of reinforced concrete structures, considering structural systems with Solid Slabs, Precast Slabs and Hollow core Slabs. Studies the amounts of concrete, steel and moulds. We chose to analyze finished projects of types mentioned, constructed in the state of Rio Grande do Sul.Were studied 13 buildings, 5 of which with Solid massive slabs, 4 with Precastslabs and 4 with Hollow core slabs. For each of the projects and typologies was calculated consumption rates. The rate of concrete and steel in structural systems with massive slabs was higher in slabs, with the exception of one project, where consumption was higher in the pillars. With regard to the consumption of moulds, slabs showed the highest values, with the exception of two projects that stood out for high consumption in the beams. Considering the structural systems with pre-slabs, concrete consumption was balanced, varying little between consumption slabs and beams, but in relation to the use of steel and moulds, the beams were the most consumed. And at the last, the analysis of structural systems with hollow core slabs, in which the consumption of concrete showed similar values between slabs and beams. Only two projects were highlighted by increased consumption in the beams. Regarding the consumption of steel, beams exhibited higher values, with the exception of a project where the pillars topped consumption. Regarding use of moulds, beams that were consumed more.