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BIM±â¹Ý °Ç¹° ¸¶°¨¼ö·® »êÃ⠽à ¼ö·® Â÷ÀÌ ¿äÀÎ / Factors Influencing Quantity Variations in BIM-Based Quantity Take-offs for Building Finishing Works |
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Çѱ¹°ÇÃà½Ã°øÇÐȸ ³í¹®Áý, Vol.24 No.5 (2024-10) |
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½ÃÀÛÆäÀÌÁö(607) ÃÑÆäÀÌÁö(12) |
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ºôµùÁ¤º¸¸ðµ¨¸µ; 3Â÷¿ø ¸ðµ¨; ¸¶°¨°ø»ç; ¼ö·®»êÃâ; ¼ö·®Â÷ÀÌ ¿äÀÎ ; building information modeling(BIM); 3D model; finishing works; take-off quantity; quantity difference factors |
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With the growing adoption of Building Information Modeling(BIM), many studies on BIM-based quantity take-off are being conducted. However, the absence of standardized quantity take-off protocols for BIM-based methods has led to a decline in accuracy. This study aimed to compare quantity take-off results from 3D models with those derived from traditional 2D-based quantity take-off methods and modeling approaches, specifically for finishing work, and to identify the underlying causes of any discrepancies. The analysis revealed significant variations in the quantities of walls, floors, and ceilings, with walls exhibiting the largest deviation. The primary cause of these discrepancies was that when interior and exterior surfaces were modeled as a single composite object, it became impossible to accurately set the height of individual finishing materials, resulting in overestimations of the quantities. Consequently, the study demonstrated that modeling interior and exterior components as separate composite objects in 3D models can significantly reduce quantity take-off discrepancies. Moving forward, the establishment of precise quantity take-off standards through additional case studies will be crucial for improving cost management in BIM applications. |