A Methodology of Open BIM-Based Quantity Take-Off for Schematic Estimation of Frame Work in Super-Tall Buildings

Abstract

In construction projects are increased the BIM-based technology for the reason that buildings are becoming large and complex. Quantity take-off and estimation fields are important factors for decision-making in conceptual and schematic design stages of construction projects. The purpose of this study improves reliability of estimates through QTO (architectural object and safety objects) based on Open BIM. Scope and method to apply QTO is to select conceptual design stage through LoD(Level of Detail) in AEC field and to extract information from BIM model through analysis of IFC structure. This study proceeds three step to make BIM model and check the model quality and calculate QTO. Development of QTO software using IFC is to verify of result in this study and expects utilizing software in design stage of construction projects.