• Journal of the Korea Institute of Building Construction
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• v.13 no.4
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• pp.321-332
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• 2013

Costs and expenses are intertwined and incurred throughout an entire construction project, even from the pre-construction phase, and each phase has a different impact on the life cycle cost (LCC). However, the cost breakdown structure (CBS) is different in each phase of a building construction project, which makes it hard to reasonably calculate construction cost. For this reason, the boundary conditions were analyzed in this study based on the life cycle cost break structure (LCCBS). In addition, breakdown factors were analyzed based on the boundary conditions to derive a linkage method. The validity of the linkage method was verified through application to actual construction projects. Through the analysis, it was found that the problem of items being left out was reduced by more than 97.2 percent, and the work was done an average of 6 hours faster compared to the conventional method. It is expected that by applying the new LCC system, LCC will be both reduced and calculated in a more efficient manner.

• Journal of the Korea Institute of Building Construction
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• v.23 no.1
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• pp.103-111
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• 2023

Accurate cost estimation in the early stages of a construction project is critical to the successful execution of the project. In this study, an ANFIS model was presented to predict construction costs in the early stages of a construction project. To increase the usability of the model, open construction cost data was used, and a model using limited information in the early stage of the project was presented. We analyzed existing studies related to ANFIS to identify recent trends, and after reviewing the basic structure of ANFIS, presented an ANFIS model for predicting conceptual construction costs. The variation in prediction performance depending on the type and number of membership functions of the ANFIS model was analyzed, the model with the best performance was presented, and the prediction accuracy of representative machine learning models was compared and analyzed. Through comparing the ANFIS model with other machine learning models, it was found to show equal or better performance, and it is concluded that it can be applied to predicting construction costs in the early stage of a project.

• Korean Journal of Construction Engineering and Management
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• v.16 no.2
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• pp.97-105
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• 2015

Building information modeling (BIM)-based construction projects have increased and become more varied, and as such the management of BIM-based facility information is also increasingly important for facility maintenance. Information management, and specifically product data mapping, however, has some problems in the area of manual data entry and does not adequately consider the exchange requirements of facility maintenance. Therefore, it is necessary to introduce a method to improve the management of composite object information for BIM-based facility maintenance so that it can handle construction operation building information exchange (COBie) data for a composite object. Therefore, we present a method to map COBie data to related materials of a composite object. This research contributes to increasing the efficiency and accuracy of the required information mapping between a building model and product data using a BIM library through optimal BIM data adoption. Moreover, it allows for the creation and management of specific product data at the design development phase.

• Korean Journal of Construction Engineering and Management
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• v.20 no.2
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• pp.86-94
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• 2019

The purpose of this study was to analyzes the problems in terms of transmission the information of architecture in the current apartment housing sales phase, to suggest the way of application the technology of BIM-based virtual reality. For this purpose, each element technology is analyzed through analyzing the exiting studies and international technical trend of BIM-based virtual reality and motion recognition devices. And then this study analyze the present condition of apartment housing sales phase and it conduct the expert interviews for derive the problem and analyzing the importance and priority by AHP method. And finally, this study suggest the solution in terms of information delivery in apartment housing sales phase through plan for support and deriving the function about problems. The system of BIM-based virtual reality viewer that utilize a leap motion that was presented in this study, it is believed to be able to efficiently transfer the information of architecture as building information transmission system user-centric in the future of apartment housing sales phase.

• Korean Architects
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• s.469
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• pp.73-78
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• 2008

우리 건축문화는 아직은 태동기라고 할 수 있다. 그간 건축계에서 논의하였던 건축문화정책을 제도적으로 지원.육성.진흥하고자 부단한 논의와 문제의 공론화가 있었지만 아직은 걸음마 단계이고 갈 길이 요원한 실정이다. 다행히 행정중심복합도시(행복도시)에서 새로운 패러다임의 도시 및 건축계획이 수립되고 있다. 행복도시는 우리가 그간 논의하였던 건축담론을 실현할 수 있는 기회가 아닌가 한다. 이에 따라 행복도시의 건축정책 및 디자인을 연재하고자 한다.

• Korean Architects
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• no.3 s.467
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• pp.67-70
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• 2008

우리 건축문화는 아직은 태동기라고 할 수 있다. 그간 건축계에서 논의하였던 건축문화정책을 제도적으로 지원.육성.진흥하고자 부단한 논의와 문제의 공론화가 있었지만 아직은 걸음마 단계이고 갈 길이 요원한 실정이다. 다행히 행정중심복합도시(행복도시)에서 새로운 패러다임의 도시 및 건축계획이 수립되고 있다. 행복도시는 우리가 그간 논의하였던 건축담론을 실현할 수 있는 기회가 아닌가 한다. 이에 따라 행복도시의 건축정책 및 디자인을 연재하고자 한다.

• Korean Architects
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• s.468
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• pp.73-77
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• 2008

우리 건축문화는 아직은 태동기라고 할 수 있다. 그간 건축계에서 논의하였던 건축문화정책을 제도적으로 지원·육성·진흥하고자 부단한 논의와 문제의 공론화가 있었지만 아직은 걸음마 단계이고 갈 길이 요원한 실정이다. 다행히 행정중심복합도시(행복도시)에서 새로운 패러다임의 도시 및 건축계획이 수립되고 있다. 행복도시는 우리가 그간 논의하였던 건축담론을 실현할 수 있는 기회가 아닌가 한다. 이에 따라 행복도시의 건축정책 및 디자인을 연재하고자 한다.

• 건축구조
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• v.19 no.3
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• pp.40-48
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• 2012

• Korean Architects
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• s.481
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• pp.76-83
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• 2009

• Korean Architects
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• s.524
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• pp.18-25
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• 2012