Inhan Kim

Improvement of Open BIM-based Building Permission Process Using EPI(Energy Performance Index)

As many countries have been raising awareness of environmental issues, greater efforts for eco-friendly construction have been made in both governmental and private sectors. However, assessment circumstances for building energy performance and green building standard of legislation are still based on two dimension and handwork. This takes time, cost and labor, and makes assessment inaccurate and inefficient. Therefore, this study suggests methods to improve eco-friendly construction permission process and to automatize open BIM-based assessment of Energy Performance Index (EPI) among several eco-friendly construction certification standards. First, it analyzes the relations between assessment criteria and IFC data, and provides solutions to problems and limitations. Second, it applies the solutions to assessment program in order to automatize open BIM-based assessment for EPI. The eco-friendly construction permission process with these solutions applied will reduce time, cost, and labor by simplifying and automatizing the tasks. Also, the simplified process of design revision will improve not only productivity and efficiency but also accuracy and reliability.

Open BIM-Based Quality Control for Enhancing the Design Quality in the Architectural Design Phase

Currently, Building Information Modeling (BIM) is an emerging technological shift that involves applying and maintaining an integral digital representation of all building information for different phases of the project life-cycle. Although BIM has been recognized as a main stream in the construction industry, it is difficult to ensure the quality of BIM data due to the problems such as internal errors of BIM tools and lack of guidelines considering design quality. Such problems give lots of difficulties to BIM adoption for designers, constructors, and owners. Therefore, it is necessary to develop the requirements including the object-oriented modeling method and property definition by applying the Industry Foundation Classes (IFC) which is an ISO/PAS 16739 standard for ensuring the quality of BIM data. This research aims at proposing the requirements considering the quality of BIM data and demonstrating the efficiency of the requirements with using the Solibri Model Checker (SMC) which is a quality control tool in a case study.

A Methodology of Building Code Checking System for Building Permission based on openBIM

The purpose of this study is to suggest methodology of building code checking system for building permission based on open BIM1. To achieve this purpose, the authors have suggested an open BIM-based building code checking process and developed a building code checking system called KBim Assess-Lite. According to this process, prevent various problem which may occur in developing the automated design quality checking system.

A Suggestion for Improvement of IFC Data in Energy Performance Index (EPI) based on Open BIM

As many countries are becoming more aware of environmental issues, both the governmental and private sectors are making more of an effort to achieve eco-friendly construction. However, the assessment of circumstances for building energy performance and green building standards of legislation are still based on two dimensions and manual work. This takes time, costs, and labor and makes assessment inaccurate and inefficient. Therefore, this study suggests methods to improve the eco-friendly building permission process and to automatize the open BIM-based assessment of the EPI among several eco-friendly building standards.

Development of IT BSC-based Assessment System to Measure BIM Performance for Architectural Design Firms

Despite the efforts of Korean government to vitalize BIM in AEC industry, the domestic adoption of BIM is still in its initial step. Particular in design field, where small and medium firms are the majority, shows lower level of BIM adoption. The primary reason for this could be considered as lack of the necessity of BIM caused by uncertain benefit of BIM and high technology entry barrier. Therefore, it is time to develop clear, quantifiable and qualitative measurement system for BIM performance to vitalize BIM utilization in design field. The purpose of this study is to suggest the BIM Performance Measurement System (PMS) for architectural design firms. This could improve the adoption of BIM in design field through offering the objective evidence of BIM benefit. To achieve this, authors have developed BIM Balanced Score Chart (BSC) which consist of Critical Sucess Factors (CSF) and Key Performance Indicators (KPI), and have validated its appropriateness by questionnaire survey, statistical analysis and case application. This development could contribute to voluntary utilization of BIM by visualizing detailed benefit of BIM. It also could improve the competitiveness of design firm by facilitating management of design process and estimating future outcome.

A Study on the Proposal and Application of Open BIM-based Design Method of Super-tall Building's Envelopes through Energy Performance Analysis

As contemporary design gets more sophisticated and the policies of environment-friendly design have been established, the use of BIM (Building Information Modeling) technology is widely spreading in the current AEC industry. For instance, PPS(Public Procurement Service) announced that public projects that are larger than 50 billion won in total construction costs should apply BIM from the year 2012, which is expected to be applied for large scale projects like super-tall buildings in the future. Unlike the conventional process of making a blueprint, BIM technology is a concept that includes additional information as well as the shape information of a building. However, there are few researches conducted for alternative assessment through open BIM-based energy assessment in the initial planning stage. Eventually, it requires much effort and time to understand energy efficiency to come up with the optimal building alternative in super-tall buildings design. Therefore, this study suggests an open BIM-based design method of super-tall buildings envelopes through energy performance analysis. When creating building envelopes of a super-tall building from the initial planning stage, the users can efficiently select the most suitable alternative.