• Journal of Construction Engineering and Project Management
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• v.5 no.4
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• pp.1-6
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• 2015

Due to unique characteristics of small construction companies, safety management is comprised of complex problems. This paper aims to better understand the complexity and dynamics of safety management in small construction companies. A system dynamics (SD) model was built in order to capture the causal interdependencies between factors at different system levels (regulation, organization, technical and individual) and their effects on safety outcomes. Various tests were conducted to build confidence in the model's usefulness to understand safety problems facing small companies from a system dynamics view. A number of policies were analyzed by changing the value of parameters. The value of a system dynamics approach to safety management in small construction companies is its ability to address joint effects of multiple safety risk factors on safety performance with a systems thinking perspective. By taking into account feedback loops and non-linear relationships, such a system dynamics model provides insights into the complex causes of relatively poor safety performance of small construction companies and improvement strategies.

• Journal of the Korea Safety Management & Science
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• v.16 no.4
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• pp.63-69
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• 2014

The large-sized, complex, and multi-storied construction industry caused the increasing construction amount together with insufficient skilled workers to increase the probability of occurring accident, resulting in the most construction accidents next to manufacturing industry. Death accidents have risen to serious level, compared construction industry with manufacturing industry along the numbers of workers. Due to the main feature of one-time industry receiving orders, open-air dispersed production activity and the long-complex production process, the continuous efforts to prevent and manage safety accidents were made but the results were of no effect. They didn't deeply analyze the falling accidents that consist of half death accidents in construction industry. This study has classified in detail Missteps, Slip, Trip, Unstability and the others on the basis of gait characteristics, occurrence types, frequency and intensity of death accidents. This study suggested the effective methods on the construction safety management according to the causes of falling accidents. This study will be expect to be used as the basic data in the procedure and the program of safety management.

• Korean Institute of Interior Design Journal
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• v.16 no.3 s.62
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• pp.3-9
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• 2007

Taliesin West is a meaningful historic site in architecture field, because its place had still been existing only one in the world as a ideal architectural community for working and living as well as learning by doing for Taliesin Fellowships and others based on F. L. Wright's idea of Organic Architecture. The main purpose of this study was to follow up the architectural thought and its construction shown in F. L. Wright's 'Taliesin West'. A study on the key notes are as follows; 1) The key-clue of the construction background for Taliesin West was based on the project of 'Complex Campus Building' which was early planed by F. L. Wright. 2) A basic design idea for Taliesin West was admiring from its own site characters as well as the Experimental construction methods and materials. 3) Design motive of Taliesin West was based on American Indian's movable shelter which called 'Tepee.' 4) A construction of F. L. Wright's temporary studio, Ocotilla, was a good opportunity to construct for Taliesin West which construction methods, covered and framed, were same as Ocotilla. 5) A concept idea of the master plan for Taliesin West came from combining Taliesin's Hillside Home School and Complex Campus Building project. 6) Construction of Taliesin West was a final accomplished place as F. L. Wright's utopia architecture and community.

• Proceedings of the Korean Geotechical Society Conference
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• 2009.03a
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• pp.896-901
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• 2009

A Soil Nail is a structural element which provides load-transfer to the ground in excavation reinforcement applications. The nail may simply consist of a steel tendon, but most commonly the tendon is encapsulated in a cement grouted body to provide corrosion protection and improved load- transfer to the ground. For temporary excavation support in a congested urban area, the steel bar of Soil Nails should be removed to get permission of the private land to install Soil Nails. Several removable nail systems were developed and evaluated by pull-out load tests. The Soil Nail pull-out tests were performed on five nails installed in soft and hard rock at a 00 housing-redevelopment area in seoul. Two nails are plastic socket type and two are complex socket type mixed steel and plastic. The nail was 0.1mm in diameter, 4m long. In this study verification tests, and steel bar removing tests of plastic socket type nails and complex socket type nails were performed and presented.

• Journal of the Korean Society of Safety
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• v.9 no.1
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• pp.155-160
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• 1994

A study of stream pollution caused by construction of the Industrial Complex in Agricultural Area of Chung Chong Nam Do were descrived here. The five main results of this studies are summerized. First, since 1988, among the companies moved in the industrial complex area, the number of electric and electronic companies have increased compared with food companies requiring much BOD. This Is very desirable to reduce the water pollution. Second, the average Biochemical Oxygen Demand(BOD) of Masan stream was the highest and it was decreased in the order of Yudug, Jo and Jungan stream. Third, although the concentration of heavy metals such as Cd and C $r^{6+}$ are not off the limit and the amount of it is small, it is desirable to introduce a chemical process to remove these metals. Fourth, since the wastewater from industrial complex area is the major factor in stream pollution, the laws associated with environmental protection should be enforced even then if the Industrial complex area with food and chemical companies produce wastewater less than 500ton/day. Fifth, it is required to improve a facilities which separete living wastewater from inderstrial wastewater In Kaya-gok and Nojang industrial complex areas.

• Journal of Environmental Impact Assessment
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• v.20 no.2
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• pp.141-150
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• 2011

The construction of photovoltaic complex in mountainous area is quickly increasing recently so that the environment assessment in constructing photovoltain complex in mountainous area was performed by comparison of $CO_{2{\cdot}}$ reduction and forest damage. The case studies for environmental value assessment, which construct photovoltaic complex in mountainous area, show that the losses of around 5.1billion won arise during 15 years. The government's official target for spreading photovoltaic energy until year 2030 can be satisfied when considering other alternative sites, improvement of technology and the alternative sites of an idle space of a building or a disused site, etc, except an undeveloped mountainous area. The construction of photovoltaic complex in mountainous area can cause the great damage to the environment, especially undeveloped mountainous area such as Baekdudaegan, and this defeat its own purpose of using photovoltaic energy. Therefore, the spread of photovoltaic complex through the additional damage of forest should be sublated.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2017.11a
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• pp.215-216
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• 2017

Existing studies highlights the problems about the negative-side waterproofing design of apartment complex underground structures. This study suggests the alternatives for waterproof design construction details of as a solution, and a review on the applicability of this new construction design details through a mock-up construction is provided.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2023.11a
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• pp.117-118
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• 2023

This study is a basic research study to establish an effective evacuation guidance system in case of fire in high-rise and underground-linked complex buildings. As a result of the analysis of overseas cases, it is judged that it is necessary to develop an evacuation guidance system using artificial intelligence.

• Proceedings of the KSR Conference
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• 2011.10a
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• pp.1235-1240
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• 2011

Urban transit system consist of complex system such as vehicle, signal, train control equipment, railway facilities, electricity facilities, station facilities and information & communications facilities. So a study on construction of management system for complex system. using system-engineering tool, Urban transit standardization of steps 2 perform architecture for urban transit standardization, requirement management and data-base construction. A study expect that provide more efficient and methodical information system to all user for using standardization.

• Korean Journal of Construction Engineering and Management
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• v.9 no.1
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• pp.66-76
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• 2008

Plant project is a complex project that consists of civil engineering, building, mechanical and electronic works. The schedule management is one of important factors in plant project because the construction duration of the project is very short comparing with the other construction projects. Specially, 4D CAD system needs to visualize construction schedule information in those complex projects. This study suggests methodologies for improving 4D CAD functions by considering those project characteristics. To develop a plant 4D CAD system, this study includes to develop new functions by analyzing actual schedule information from the plant construction sites.