https://doi.org/10.24928/2024/0236

Quantity Take-Off in Rough Construction of High-Rise Buildings Based on CAD and BIM Methodologies: A Case Study

Walter Meléndez¹, Rodrigo Saavedra² & Gonzalo Garcés³

Abstract

Building Information Modeling (BIM) prepares the quantity take-off (QTO) of the construction elements, helping in the management of the design and construction process and preparing the 3D visualization of the construction phases. BIM increases efficiency and gives users more control over construction-related tasks. This study identifies the New Cycle building as a Case Study, in which inconsistencies were detected in the QTO, compared to the real quantities of budgeted materials, so the interested parties decided to implement BIM in the use of QTO as a mechanism of control. The central question addressed was: If BIM had been implemented at the tender stage, could it have provided benefits to the project? To do this, various parameters were evaluated to conduct a comparative analysis between the results obtained through the use of the CAD and BIM methodology in the same project. Using the Analytical Hierarchy Process (AHP) method, it was possible to evaluate and compare the two alternatives, CAD and BIM, in order to determine which of them would have been more effective in satisfying the objectives set in the project. The results obtained offer a valuable and informed vision for making informed decisions for future construction projects,

Keywords

Building Information Modeling; quantity take-off; work flow; collaboration.

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Reference

Meléndez, W. , Saavedra, R. & Garcés, G. 2024. Quantity Take-Off in Rough Construction of High-Rise Buildings Based on CAD and BIM Methodologies: A Case Study, Proceedings of the 32nd Annual Conference of the International Group for Lean Construction (IGLC 32) , 793-806. doi.org/10.24928/2024/0236

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