Rotina de programação para geração de modelos BIM visando estimativas de custos

This study presents a comparison between a general programming routine and a reference routine from the literature. Both routines propose a cost estimate in the initial phases of the project using generative programming associated to BIM, which involves generating a model and extracting quantitative data through Dynamo, Revit and Excel software. The purpose of this study is to refine the reference routine to allow variations in the construction model by modifying only the data inputs, without having to change the programming structure for each new modeled solution. The research strategy adopted in this work is Design Science Research (DSR), which is oriented to the solution of relevant and pragmatic real-world problems. It has been divided into the stages of awareness, suggestion, development, evaluation and completion. In order to compare the results, the structural elements (beams, slabs and pillars) of a building were modeled through the general routine. The routine presented an error of 12% in relation to the budgeted cost and was considered a viable and fast solution for the creation of BIM models for preliminary cost estimates, in order to support decisions in the initial phases of the project.