| Title |
A Study on the Development of Embodied Carbon Emission Calculation Model for the Automation of Building Life Cycle Assessment |
| Authors |
강찬혁(Kang, Chan-Hyeok) ; 정보경(Jung, BoKyung) ; 박창영(Park, ChangYoung) ; 권영철(Kwon, Young-Cheol) ; 최창호(Choi, Chang-Ho) |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.9.283 |
| Keywords |
Embodied Carbon Emissions; Open BIM; Automated Calculation; Life Cycle Assessment; Circular Economy |
| Abstract |
This study presents a BIM-based automated model for estimating embodied carbon emissions, aimed at supporting life cycle assessments in building projects. Traditional manual LCA methods often involve time-consuming processes and are prone to errors, particularly during the quantity takeoff of building materials. To overcome these issues, the proposed model automatically extracts material quantities using the Industry Foundation Classes (IFC) format within an Open BIM framework. It applies material surcharge rates from national construction cost standards to calculate gross quantities, using a 99 percent cut-off threshold to prioritize key materials. By incorporating data from environmental product declarations, the model accurately estimates embodied carbon emissions. The model was tested on four completed buildings of varying types and scales. Results showed that BIM-based estimates were within plus or minus 10 percent of actual measurements, confirming both accuracy and practical usability. However, slight overestimations occurred for materials with high global warming potential, such as glass and insulation, due to limitations in IFC data and modeling assumptions. These findings point to the need for further refinement through correction factors and integration with real construction data. Overall, the model offers an efficient and reliable method for early-stage carbon assessments and supports the development of more integrated LCA tools in the construction sector. |