• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.19 no.4
• /
• pp.77-84
• /
• 2018

As the application of BIM (Building Information Modeling) to the civil sector has become practical, and mandatory for road projects, the standardization, development of systems, etc. for the application and operation of BIM are required. In particular, it is important to develop BIM data standards for producing, sharing and managing the lifecycle data of civil facilities because they are commonly national public facilities. The BIM data standards have been developed by utilizing or extending IFC (Industry Foundation Classes), which is an international standard, but schema extensions of river facilities has not been developed thus far. This study proposes an approach to an IFC extension for river facilities using the WBS (Work Breakdown Structure) as a fundamental study for IFC-based schema extension in the river field. For this purpose, the research was carried out as follows. First, the IFC extension development method was selected to represent the river facilities by analyzing the existing IFC structure and previous research cases for the IFC extension. Second, extended elements of the river facilities were identified through an analysis of the WBS and classified according to the high-level structure of the IFC schema. Third, the classified elements were arranged based on the IFC hierarchy and the IFC schema extension for river facilities was established. Based on the suggested extension method of IFC schema, this study developed the schema by defining the element components and parts of river facilities, such as distribution flow elements and deriving their detailed types and properties.

• Journal of KIBIM
• /
• v.12 no.4
• /
• pp.70-79
• /
• 2022

As BIM(Building Information Modeling) technology advances in architecture around the world, projects and industries using BIM are increasing. Unlike previous developments that were limited to buildings, BIM is now spreading to other fields such as civil engineering and electricity. In architecture, BIM is used in the entire process from design to maintenance of a building, and IFC(Industry Foundation Classes), a neutral format with interoperability, is used as an open BIM format. Since firefighting requires intuitive 3D models for evacuation and fire simulations, BIM models are desirable. However, due to the BIM model, which was developed centered on building objects, there are no objects and specific properties for fire evacuation in the IFC scheme. Therefore, in this study, when adding a new object in the firefighting area to the IFC schema, the IFC interoperability is not broken and the building WBS(Work Breakdown Structure) is analyzed with a hierarchical system similar to the IFC format to define the scope for a new object and the firefighting part within of the building WBS to derive a firefighting HBS(Hierarchy Breakdown Structure) with the extension of the object-oriented IFC file. And according to HBS, we propose an IFC schema extension method. It is a methodology that allows BIM users to instantly adapt the IFC schema to their needs. Accordingly, the methodology derived from this study is expected to be expanded in various areas to minimize information loss from IFC. In the future, we will apply the IFC extension methodology to the actual development process using HBS to verify that it is actually applicable within the IFC schema.

• Journal of the Korean Institute of Educational Facilities
• /
• v.13 no.2
• /
• pp.5-14
• /
• 2006

After the change of curriculum in the Year 2000, Partial extensions and renovations were carried out for functional correspondence. Despite of the importance of contextual consideration for facade, Leaning to curriculum and function leads to visual problems between old existing and new building in many case of educational facilities. therefore Design Guidelines for the Facade of extension and renovation are needed. In this study, First, made a survey of the level of satisfaction and harmony of facade of extensions and renovations on elementary schools which have extended and renovated since the Year 2000. secondary, analyzed the interrelationship between the level of satisfaction and harmony and design elements of facade of extension and renovation and lastly, derived design guidelines from them. Results of this study are as follows; 1) The more latest building, the more high in the level of satisfaction and harmony 2) The sequences of the level of satisfaction in finishing materials are as follows : stone>brick>paint 3) When the proportion of existing to new building over a half, higher level of satisfaction appears on the whole. 4) How overcomes the gap of time is the matter in the facade design of extension and renovation.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2015.11a
• /
• pp.83-84
• /
• 2015

Remodeling of apartment houses has been increasing recently and residents have chosen to extend the balcony along with the legalization of balcony extension in apartment houses. Balcony extension provides residents more space, however, it has been investigated that balcony extension increases construction cost, heating and cooling cost and decreases sound insulation performance. Therefore, this study focuses on developing a decision making index for residents in remodeling required apartment houses. The suggested methodology involves surveying actual residents, survey analysis by AHP and decision model development using logistic regression analysis.

• Journal of Agricultural Extension & Community Development
• /
• v.17 no.3
• /
• pp.385-418
• /
• 2010

This study aimed to find the way to help participants build capacity in rural development projects, through some case studies and Q-methodology. Decentralization and diffusion of bottom-up approach in rural development projects are the main contextual factors in this study. With the ethos of bottom-up approach in rural development, the human and financial inputs for capacity building increased drastically in the area of rural development policy. Four types of capacity building methods were identified in this study; training, consulting, learning organization, and forum. Theses methods were used more at planning step than implementation step in rural development projects. The government's effort to strengthen leadership in rural areas should be continued. The existing government's training program for capacity building had better include more diverse clients. Actions for capacity building should be centered on the needs of the participants in fields. Especially, organizing learning units is very important. Governments' rural development policy should establish the proper process which can help local actors plan their projects with enough time span.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2014.05a
• /
• pp.298-299
• /
• 2014

As a governmental plan for real estate revitalization, remodeling vertical extension has been permitted. Thus, the Ministry of Land, Infrastructure and Transport preannounced proclaiming the revised Housing Act and establishing the remodeling basic plan, and it is anticipated that the remodeling market will be revitalized in earnest after the enforcement of remodeling vertical extension(April 25th. 2014). As vertical extension is applicable up to 3 stories, the safety of building for remodeling is becoming important, so most remodeling construction works use various methods for structural reinforcement. In this process, the selection of structural reinforcement method has depended on structural engineer's experience and knowledge and there has been a limitation in selecting the optimum structural reinforcement method which considers remodeling project characteristics. Therefore, this study analyzed the factors to determine the kinds of structural reinforcement method in a remodeling project and suggested a process to select the best structural reinforcement method of remodeling construction.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2021.05a
• /
• pp.273-274
• /
• 2021

This paper proposes a process to calculate the amount of construction and demolition (C&D) of underground vertical extension methods through considering the characteristics of used construction and demolished materials. The underground vertical extension methods analyzed in this paper were the bottom-up, normal top-down, and top-down methods with multi-post downward (MPD). In order to check the applicability of the proposed process, 24 illustrative examples were generated. The amount of C&D waste of the illustrative examples were calculated and compared. As the results, the top-down method with MPD was the most efficient method to reduce the amount of C&D waste.

• Journal of architectural history
• /
• v.23 no.6
• /
• pp.7-20
• /
• 2014

The purpose of this paper is to study on the architecture and extension project for the Church of St. Lorenzo. This study is composed of a through analysis of the extension elements on the church building and extension type for extension project of the Church of St. Lorenzo. The results of study are as follows: 1. The extension project for the Church of St. Lorenzo was basically consisted of the concept of a horizontal extension plan through both the interior and exterior space of the church building. This project was the plan of concept of additional or affixing extension through existing spaces with necessary spaces to make up for the previous simple space and form as well as functional aspect. 2. The unit spaces of the nave, the aisle, the small chapels bilaterally adorning the aisles, the transept and the chapels around transepts, and the sacristies by the extension project for the Church of St. Lorenzo is composed of regulation, balance and harmony as geometric space composition according to simple proportion system on whole and parts as well as parts and parts, through the definite articulation by each space zoning. 3. The most important innovative aspect different to previous churches in the extension project for the Church of St. Lorenzo is the compositive system of each other symmetrical spaces through long centrical axis of central part, applying the module system for horizontal arrangement. In particular, the use of regular module on repetition and proportion of rhythm from architectural composition system was precisely composed with the alter that consists of visual focus to express more accurate perspective.

• Journal of the Earthquake Engineering Society of Korea
• /
• v.28 no.5
• /
• pp.257-266
• /
• 2024

Due to seismically deficient details, existing reinforced concrete structures have low lateral resistance capacities. Since these building structures suffer an increase in axial loads to the main structural element due to the green retrofit (e.g., energy equipment/device, roof garden) for CO₂ reduction and vertical extension, building capacities are reduced. This paper proposes a machine-learning-based methodology for allowable ranges of axial loading ratio to reinforced concrete columns using simple structural details. The methodology consists of a two-step procedure: (1) a machine-learning-based failure detection model and (2) column damage limits proposed by previous researchers. To demonstrate this proposed method, the existing building structure built in the 1990s was selected, and the allowable range for the target structure was computed for exterior and interior columns.

• Journal of Practical Agriculture & Fisheries Research
• /
• v.22 no.2
• /
• pp.37-50
• /
• 2020

The purpose of this study is to identify professional development needs of Extension professionals and to evaluate competencies essential to be a successful Extension professional. For the purpose of this study, quantitative capacity data of extension professionals were collected from the survey instrument based on Extension Professional Evaluation Scale in Utah state university. Descriptive statistics, mean difference analysis, IPA(importance-performance analysis) analysis were used to analyze the data. The main results of the study are as follows. First, it is necessary to first reinforce education on specialized technical capacity among the three extension capacity areas. The current status of the professional capacity of extension professionals in the three areas was found to be at the average level, and the level of professional technical capacity was relatively low. In addition, the importance was evaluated that professional technology capacity is more important than the project development/evaluation capacity and communication capacity. Second, Second, in order to reinforce communication capacity, it is necessary to strengthen education on 'development of joint educational materials with colleagues'. Third, in order to reinforce project development/evaluation capacity, it is necessary to strengthen education on 'project planning'. In the IPA analysis results, the importance was high, but the capacity with relatively low performance were analyzed as 'project planning'. Fourth, in order to reinforce professional technical capacity, it is necessary to develop an education program for 'crop expertise' first. In the IPA analysis results, the importance was high, but the competencies with relatively low performance were analyzed as 'crop technology expertise'.