• Journal of the Korea Safety Management & Science
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• v.18 no.3
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• pp.71-80
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• 2016

This study is on safety improvement measures through analysis of accident cases during plant storage tank construction. Storage tank is a general term for artificial ground facility constructed to store oil, water, gas, and other chemicals. Some companies have clustered storage tanks (tank farm). The construction methods vary according to the component and types of fluids. Because most of the construction procedures include lifting heavy weight materials using heavy construction equipment and are carried out at high places, storage tank construction contains more risk factors than normal aerial construction. Recently, major accidents such as storage tank collapse have occurred often, and cost many lives due to the characteristics of the structure. In this study we would like to analyze the cause of these accidents and propose measures to improve safety.

• 한국전산유체공학회:학술대회논문집
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• 2003.10a
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• pp.225-226
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• 2003

• Journal of the Korean Institute of Rural Architecture
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• v.13 no.4
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• pp.99-106
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• 2011

Since 1982, schools have been closed down by urbanization in rural areas. 3,386 schools had been closed down by March 2010. The average 300 schools was closed down every year. 55.7% closed schools were sold, 14.5% closed schools were rented. 6.3% closed schools have been utilized as education facilities. First, the closed school should be utilized as education facilities. And it should be utilized as public facilities as well as welfare facilities for local residents. This paper presents a case of the welfare facility remodeled using Don-Yi middle school in Okcheon-Gun, Chungcheongbuk-Do and propose the unit care composition. The main contents is composed of posts, beams floors, stairs. Masonry infill walls and windows ware improved. Corridors were placed. A classroom were divided into 2 rooms with the Korean traditional heating system(on-dol) for four. Other conveniences were designed for a cafeteria, recreation, a restroom as space required. It is effective to utilize the closed school that has magnificent views and orientation, space construction. The Unit-care system is proposed by 4 types developments.

• Journal of the Korean Institute of Educational Facilities
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• v.22 no.1
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• pp.3-12
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• 2015

The user participatory design process collects users' opinions efficiently through a feedback process such as various user workshops and conferences. When users who actually participated in a design process use the facility in which they were a participant, their satisfaction with the design quality of the facility they use may be enhanced; therefore, user participatory design methods in school construction are deemed to enlarge consistently the interest in a school of students, parents, teachers, and local residents. This paper selected the most appropriate user participatory design methods through an analysis of actually applied cases, and applied them to the empirical exploration process. Also, problems incurred through the empirical exploration process were solved by various user participatory design methods based on actually experienced cases and the results of workshops performed. As such, this paper deduced problems by applying user participatory design methods in practice, and solved problems by executing the empirical exploration process again. Through this, the paper proposed a variety of user participatory design methods for improving school design and raising user satisfaction.

• International conference on construction engineering and project management
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• 2013.01a
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• pp.616-623
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• 2013

One of the oldest, most common engineering problems is measuring the dimensions of different objects and the distances between locations. In AEC/FM, related uses vary from large-scale applications such as measuring distances between cities to small-scale applications such as measuring the depth of a crack or the width of a welded joint. Within the last few years, advances in applying new technologies have prompted the development of new measuring devices such as ultrasound and laser-based measurers. Because of wide varieties in type, associated costs, and levels of accuracy, the selection of an optimal measuring technology is challenging for construction engineers and facility managers. To tackle this issue, we present an overview of various measuring technologies adopted by experts in the area of AEC/FM. As the next step, to evaluate the performance of these technologies, we select one indoor and one outdoor case and measure several dimensions using six categories of technologies: tapes, total stations, laser measurers, ultrasound devices, laser scanners, and image-based technologies. Then we evaluate the results according to various metrics such as accuracy, ease of use, operation time, associated costs, compare these results, and recommend optimal technologies for specific applications. The results also revealed that in most applications, computer vision-based technologies outperform traditional devices in terms of ease of use, associated costs, and accuracy.

• Journal of the Korea Institute of Building Construction
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• v.22 no.1
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• pp.1-10
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• 2022

Recently, due to the frequent occurrence of localized torrential rains and heat waves caused by abnormal climates. For this reason, it is necessary to develop an economical and eco-friendly rainwater detention facility that can secure the groundwater level through rainwater detention as well as flood prevention against concentrated rainfall by simultaneously implementing rainwater permeation and storage. In this study, the structural safety of an eco-friendly rainwater infiltration type detention facility made using eco-friendly inorganic binders including red clay was examined. Static analysis considering the constant load and additional vertical load and dynamic analysis considering the seismic spectrum were performed. As a result, it was found that the eco-friendly prefabricated rainwater infiltration type detention facility developed in this study has a maximum stress of about 68.1% to 75.4% and a maximum displacement of about 0.9% to 9.6% under the same load and seismic conditions compared to the existing PE block rainwater detention facility. It was confirmed that the eco-friendly prefabricated rainwater infiltration type detention facility secured excellent structural stability.

• Plant Journal
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• v.5 no.4
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• pp.73-79
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• 2009

Increase of consumption in limited coal reserves leads prices surging. As a result, iron works which produce products with coal are in difficulties. Accordingly, it is required a lot of research of using non-caking coal that is relatively low cost and has abundant reserves. Direct drying and indirect drying are two major methods of drying the coal. Recently, to minimize the needed calories and to save energy, using fluidbed or fluidizing method is a recent main trend of minimizing the size of the facility and maximizing energy efficiency. However there is also disadvantage such as increasing facility investment because of installing additional facilities in the latter part. In this study, we will have theoretical researches on the indirect drying method with heat exchange system which have been traditionally used. As a result it is expected to increase the efficiency of the facility operation.

• The Journal of Sustainable Design and Educational Environment Research
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• v.22 no.1
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• pp.13-27
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• 2023

This study analyzed the reasons for extending the construction period considering factors such as the quality of construction materials, safety and cost-effectiveness of construction, size of construction, academic schedule, and local conditions (complaints) when determining the appropriate period for school construction projects tailored to a specific region or educational office. Based on the example of construction projects for school facility improvement by education office A, this study conducted a case study to identify the motives for construction period extension. To determine the appropriate construction period for school facilities, this study conducted a comprehensive review of construction projects under the jurisdiction of education office A, examined data from the Meteorological Data Open Portal, and performed advanced statistical analysis. Future case studies must determine the appropriate construction period for school facilities in a rational and systematics.

• International conference on construction engineering and project management
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• 2009.05a
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• pp.781-787
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• 2009

Training and process analysis in the construction industry has not taken full advantage of new technologies such as building information modeling(BIM). The purpose of this research is to develop a framework for the virtual interactive construction education system using three dimensional technologies. The modules will simulate the construction process for a facility from start to finish using information drawn from real projects in the built environment. These modules can be used as training tools for new employees where they attempt to optimize time and cost in a virtual environment given a limited number of equipment, time and employee options. They can also be used as a process analysis tool for new construction where a number of situational variables can change leading to exposure of potential risk. These modules would be particularly useful for repetitive construction where the initial project is analyzed for optimization and risk mitigation. This paper describes the framework and shows a residential construction example using a 900 square foot wood frame single family house designed for the United States.

• Journal of the Korean Society for Geothermal and Hydrothermal Energy
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• v.7 no.1
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• pp.17-22
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• 2011

Renewable energy is growing based on low-carbon green energy government policies. According to this policy, geothermal energy is highly efficient and environmental friendly energy which is being recently expanded. However, construction companies are generated disorderly but their ability has not been verified due to the poor geothermal facility which was reported in the media. In the this paper introduce on Busan region's largest geothermal facility, it was confirmed that thermal efficiency of the underground is close to heat exchanger performance. Therefore the study improving the efficiency of underground heat exchange found progressed. The results showed voids between borehole and ground heat exchanger should not be raised. And then geothermal facilities were installed very successfully through the principle grouting operation. As compared to the energy consumption on the basis of operating results energy usage was less than any other heat sources.