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Study on the Application of 3D-based BIM for School Facilities to Increase Cost Management Efficiency

교육시설물 공사비 관리 효율화를 위한 BIM 적용방안에 관한 연구

  • Kwon, O-Bin (Graduate School, Hongik University) ;
  • Son, Jae-Ho (School of Architectural Engineering, Hongik University) ;
  • Lee, Seung-Hyun (School of Architectural Engineering, Hongik University)
  • Received : 2010.09.15
  • Accepted : 2010.12.09
  • Published : 2010.12.20

Abstract

Cost Estimating allows each entity in a construction project to plan, distribute, and control its required construction cost for the project. However, existing 2D design based estimating has problems, such as inaccuracy and inefficiency caused by missing, duplicated, or erroneous calculations. In this situation, current estimations for school facilities have more difficulties in forecasting construction costs due to an inadequate work breakdown structure for BOQ (Bill of Quantity) and insufficient guidelines for Basis of Estimate. In this study, therefore, an effort was made to increase the efficiency of estimating for school facilities by applying a 3D modeling based BIM tool to quantity and cost estimates. In addition, this study suggested a reasonable work breakdown structure for BOQ that was appropriate when 3D modeling was applied, and verified it through a case study. The authors tried to provide a BIM-based estimating method for school facilities to obtain greater accuracy and efficiency by having more information in an earlier stage.

건설 사업을 진행하는 데 있어 적산업무는 사업에 참여하는 각 주체들로 하여금 최적화된 공사비를 계획하고 분배하며, 이를 관리할 수 있는 중요한 기능을 제공하고 있다. 그러나 기존의 2D 설계도서를 기반으로 하는 적산업무는 누락이나 중복, 혹은 계산상의 오류 등과 같은 부정확성이나 적산업무의 비효율성 등의 여러 가지 문제점을 내포하고 있다. 현재 교육시설물의 적산의 경우도 이러한 상황과 더불어 표준화된 분류체계(WBS)의 미흡과 불충분한 내역서 작성지침 등으로 인하여 적산업무 효율저하와 정확한 적산 결과를 통한 공사비 산정이 매우 어려운 실정에 놓여있다. 이에 본 연구에서는 최근 여러 가지로 활용가능성이 제시되고 있는 3D 모델링 기반의 BIM(Building Information Modeling)도구를 물량산출 및 공사비 산정을 위하여 활용함으로써 교육시설물의 적산 업무의 효율성을 제고하고자 하였다. 또한 BIM 적용 시 합리적인 3D 모델링에 부합하는 교육 시설물 분류체계를 새로이 제시하고, 이를 사례연구를 통해 검증하였다. 이를 통해 교육시설물의 적산업무에 있어서 더 많은 정보에 기초하여 적산 단계별로 효율적으로 BIM을 활용한 공사비 결정을 내릴 수 있는 공사비 관리 기반을 제공하고자 하였다.

Keywords

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