Modelo para estimar o consumo de madeira em formas de estrutura de concreto armado em unidades habitacionais unifamiliares

Abstract

Wood has great relevance in the generation of construction waste because it is an element of temporary use. The knowledge of the wood consumption parameter is of extreme importance to the rational use of the material, both from the constructor's point of view, for financial issues, or from the environmental point of view. This work aims to propose a model to estimate the consumption of wood used as a form of reinforced concrete structures in isolated residential constructions, considering the use of sawn wood boards. It was done from data from architectural and structural projects of residential houses, which were analyzed by linear regression, generating an equation that expresses the amount of wood needed to make forms, using as variables built area, building height and verge length. The proposed model was elaborated in an electronic spreadsheet and expresses the wood consumption for each element, considering different information units (area or boards) and different reuse rates. The results indicate that on average the wood consumption (m²) in relation to the built area (m²) is 2.00m²/m². Of the total, on average, 43% is consumed for column forms, 24% for baldram beams and 33% for beams in general.