Diversification of rebar standard lengths and optimization to reduce rebar waste rate

Abstract

In construction projects, highly rebar waste occurs in the unplanned construction rebar cutting made on the construction site. Therefore, in this study, an optimization method is offered to minimize the reinforced concrete rebar waste before the construction phase of the building. Using this method, it is aimed to further reduce the amount of waste if the rebar production lengths are produced at different lengths. The optimization method used in the study was made with CutLogic ID software which based on genetic algorithm and combined with a fuzzy logic system. Optimization was performed with rebar quantities calculated on 3 different projects on a small, medium and large scale. Also, in addition to the standard 12-meter production length, the most optimum rebar waste rates were determined in the direction of the analysis made with alternative different production lengths and sets of these lengths. It is observed that these waste rates are greatly reduced by the analysis. Especially in small, medium and large-scale constructions, trim loss in S3 and S4 alternative production length sets reach minimum values with approximately 1%. According to the proposed optimization methods and production alternatives in this study, Turkey's yields from rebar will be approximately 120597.585 tons, taking into account the optimum rebar waste rates. This will contribute to reducing construction costs as well as contribute to the country's economy.