• Korean Journal of Computational Design and Engineering
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• v.15 no.4
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• pp.289-296
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• 2010

Energy consumption by buildings accounts for a large part of the world‘s energy consumption. Methods to analyze building energy consumption before construction have been studied for decades. With BIM (Building Information Modeling) technology, architects can easily export building information to data models in order to analyze the design‘s effect on building energy efficiency. Although several BIM-based energy simulation applications are currently available, utilizing these applications for energy efficiency simulation is difficult. In this paper, by comparing existing BIM-based energy applications, the authors test the building energy efficiencies estimated by some BIM models, offer ideas and solutions to problems that appeared during the test process and propose new methods for BIM-based energy evaluation based on quantitative factors.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2010.05a
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• pp.261-264
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• 2010

As construction projects get bigger and more complex, communication and information flow among participants become key success factors of a project. Accordingly, construction projects to respond to these changes being made in the introduction of BIM (Building Information Modeling). But as 2D drawings are still to be widely used in practical fields, it is very important that 2D drawing information could be easily and clearly projected from 3D BIM data. In this study suggest that efficiency of design phase in BIM-based construction projects for can cause confusion and additional work in traditional to BIM.

• Korean Journal of Computational Design and Engineering
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• v.15 no.6
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• pp.467-475
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• 2010

Due to the needs of design optimization and productivity for modernized Korean traditional house, standardization of Korean traditional building components is proceeding by BIM (Building Information Modeling). Currently, most of BIM software support object-based parametric modeling. By means of parameterized Korean traditional building components, the shape and assembly relation can be controlled. Although IFC(ISO/PAS 16739), which is an international standard in the AEC field, has been developed for information exchange among BIM software, IFC and other existing common data formats cannot be exchangeable parametric information. For the exchangeable parametric information within IFC, the authors defined meta-data by using Pset(Property-Set). The authors analyzed results about interoperability test in Revit $Architecture^{TM}$, $ArchiCAD^{TM}$ and Digital $Project^{TM}$. In order to solve found problems, the authors developed a translator to improve interoperability among BIM software.

• International Journal of High-Rise Buildings
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• v.3 no.4
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• pp.311-323
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• 2014

This paper introduces recent applications of three-dimensional building/construction data modeling (3D) and building information modeling (BIM) to large-scale complex building construction projects in Japan. Recently, BIM has been utilized as a tool in construction process innovation through planning, design, engineering, procurement and construction to establish a front-loading-type design building system. Firstly, the background and introduction processes of 3D and BIM are described to clarify their purposes and scopes of applications. Secondly, 3D and BIM applications for typical large-scale complex building construction projects to improve planning and management efficiency in building construction are presented. Finally, future directions and further research issues with 3D and BIM applications are proposed.

• Journal of Korea Multimedia Society
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• v.17 no.5
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• pp.623-630
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• 2014

While BIM software becomes popular for CAAD and architectural design educations, the affordance of BIM for students' architectural idea developments, called intra-process of communication, is still unknown. Therefore, this study conducted t-test quantitative analysis in order to the scores for feedback, idea productivity, idea development for architectural elements(form, interior space, material, and details), and creative motivation(novelty, appropriateness) using BIM and non-BIM 3D modeler. To achieve the goal, in authentic CAAD class, architecture major students proposed two office designs using those two tools, then they evaluated in which ways those tools influenced their idea developments.

• Journal of Korean Society of Steel Construction
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• v.24 no.3
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• pp.301-312
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• 2012

This paper studied the applicable case study on the BIM, based on a structural design process for office buildings. The design process and the applicable system are provided from the results of the research project on the system development of a virtual construction. The case study evaluated the work productivity and economic application of the process and the developed system. The study mainly takes steel structures into account. By using the structural analysis model and the basic design documents, it is able to create the basic construction model and the construction structural model. Likewise, the integrated model is built by IFC from the finished construction structural model. It checked the interoperability of the information among the various BIM design tools. The work environment was efficiently improved by establishing the BIM process, and work productivity could be increased with the help of the modeling automation for connections at the construction design stage.

• Korean Journal of Computational Design and Engineering
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• v.20 no.1
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• pp.22-35
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• 2015

As BIM in the construction industry has been activated, the building information reliability - design quality is getting important. Meanwhile, it is still difficult to reflect the quality control experience to the modelling since the current methods are strongly rely on a certain BIM tools or systems with formal logics and limited information for quality checking. Therefore, the checking results may contain a lot of issues unrelated or unnecessary to the BIM qualities. In order to overcome this problem, we firstly performed clash check using a conventional checking tool and secondly interpret the results by an Expert System to filter out more meaningful results. We found this study gave a confirmation that it is possible to improve clash quality control when we link the expert experience to the rule-based automatic checking system.

• International conference on construction engineering and project management
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• 2013.01a
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• pp.419-425
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• 2013

Recently AEC industry has required construction automation according to becoming large and complex. Thus BIM-based construction project is increased and used in whole fields of AEC industry. Quantity take-off and estimation fields are important factor for decision-making in conceptual and schematic design stages of construction projects. The purpose of this study improves reliability of the estimation through QTO based on Open BIM. Scope and method to apply QTO is to select conceptual design stage through LoD(Level of Detail) in AEC field and to extract information from BIM model through analysis of IFC structure. This study proceeds three step to make BIM model and check the model quality and calculate QTO. The methodology of QTO using IFC is to verify of result in this study and expects utilizing in design stage of construction projects. The result from this study is expected to decrease the risk factor and time of estimation in the project early phase through improving reliability of schematic estimation.

• International conference on construction engineering and project management
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• 2011.02a
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• pp.23-30
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• 2011

The people in the AEC industry have acknowledged and long struggled to solve the critical low productivity issue of the entire construction industry. Integrated Project Delivery has been suggested as a solution to this problem and to take this into practice many countries have come up with BIM guidelines. In order to make this a success, BIM design process and LOD must be dealt in advance. The following research has selected 3 out of 16 guidelines that specifically describes BIM process and LOD, and intends to fully acknowledge its concept by comparing the approach and definition of LOD in the BIM Design Process.

• Korean Journal of Computational Design and Engineering
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• v.18 no.2
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• pp.83-92
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• 2013

IFC based open BIM has internationally developed as a solution for interoperability problem among different software applications. Despite much interest and effort, the open BIM technologies are rarely introduced to the construction industry and need more technical development for a practical application as well. This research aims to develop automated code checking modules for quality assurance process of BIM data. The research have analyzed domestic regulations focusing on super-tall buildings and developed open BIM-based code checking modules for the evacuation regulations. The modules are able to validate evacuation regulations such as installation of emergency elevator and fire safety zone. The authors expect to improve the process of BIM quality assurance and enhance the quality of BIM data by this research on automated checking system.