• Korean Journal of Construction Engineering and Management
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• v.19 no.2
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• pp.61-72
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• 2018

Conflicts in public construction projects lead to increase social costs as well as construction costs and schedule delay. Therefore, it is important to evaluate the conflict in construction project and find appropriate solutions based on previous cases. In this research, the conflict factors and criteria for evaluating conflict are derived and 30 cases are evaluated by 11 conflict experts. Using k-means clustering, the cases are clustered by three clusters. The cases were analyzed according to the characteristics of each cluster and labeled as 'NIMBY and harmful facility conflict cluster', 'environmental and pollution conflict cluster', and 'PIMFY and small conflicts'. In the future, when conflict occurs in the public construction projects, the conflict can be evaluated using this clustering and the characteristics of the conflicts can be found. As a result, it will be helpful to mitigate the conflict quickly and effectively by looking for previous cases that are suitable for resolving the conflict through appropriate clusters.

• International conference on construction engineering and project management
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• 2005.10a
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• pp.1048-1052
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• 2005

In Korean cases, the occupation of building construction is below 10% of the total industry workers but from a accident rate point of view, it is a risk serious industry and it's hazard is very considerable which accident rate is up to 30% of the total industry workers. The reason of high accident rate of the building construction is its own characteristic, hazard of the work in which is implicated and the shortage of safety counter plan and information, so it is most required to the building construction that educating, training, short and long period approaching to prevent the hazard. The safety information of building construction which is related to safety accident is divided into human and material such as hazard, work situation, cause and counter plan. The existing hazard cases imply all of the information about the work type and work progress of the building construction, so if the research of the every fact is well accomplished, we can obtain the useful information and prevent the hazard of building construction. From this point of view, the emphasis of this study is based on analyzing the cause of hazard first, suggesting the safety information each part of work type and work progress second, and finally making the all existing hazard cases to the Data Base and developing the safety information system.

• Journal of the Korean housing association
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• v.14 no.6
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• pp.33-40
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• 2003

The purpose of this study was to analyze the architect's Administrative Tribunal cases related to housing projects. We collected the 271 decisions of Administrative Tribunal cases from 1985 to 2001 through the Ministry of Legislation data base. As a conclusion of research, most of cases are caused during design process and supervision of construction which are major roles of architects. We can find out that the number of cases of Administrative Tribunal about housing is 10% more than other types of building. And this situation is more serious in supervision building phase. It proves that housing project has more possibility of violation of law than other types. Because it belong to an economic problems. In Korea, clients of housing project tend to take more profits by taking an illegal acts； like enlargement of a building, construction border violation. illegal construction balcony and so on. And architect who roles to be a supervisor is liable to these problems but he has not much authority and economical benefits. Through this research we can analyze this situation and make know what is problem.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2007.04a
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• pp.109-112
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• 2007

As buildings become higher, larger, and more complex, safety issues for construction workers working at such environments become more important. We analyzed 140 critical accident cases reported to the KOSHA(Korea Occupational Safety & Health Agency) for construction cranes and lifts by types of cranes and by patterns of accidents and causes. By finding out the accident's types and causes, we expect to develop an efficient measure for preventing similar accidents in the near future. The cases will be studied further and reexamined using the FMEA(Failure Mode and Effect Analysis) as a quantitative analysis method.

• International conference on construction engineering and project management
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• 2011.02a
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• pp.234-240
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• 2011

Preventing incidents occurred in construction process is important for safe implementation of construction projects. Due to the complexity and magnitude of the project and moreover, poor safe planning and management, construction incidents in Korea have been increasing. Reducing construction incidents effectively, appropriate safety management program in consideration of the incident rate of each facility is to be adapted. This study analyzes incident frequency and severity rate of each facility based on the data of construction sites(about 1,560 thousand cases) recorded by Korea Occupational Safety & Health Agency for 3 years from 2007 to 2009, and the incident related data (about 40 thousand cases) of Korea Workers' Compensation & Welfare Service. The results of this study revealed that construction incident rates of 'cold refrigeration storage facilities' are the highest among building types, followed by traditional building religious building, arcade department store and shopping center. In case of other facilities, the incident rate and the rate of intensity of 'pipelining project' are the highest, followed by 'tunneling project'. These results would be used in providing safety programs beneficial for preventing construction incidents.

• International conference on construction engineering and project management
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• 2022.06a
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• pp.375-381
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• 2022

Safety accidents are of concern during construction projects, even given the recent innovations in digital technologies. These projects remain focused on overcoming specific and limited applications on construction sites. For this reason, the development of an inclusive safety management system has become crucial. This study aims to build a Big Data platform to inform decisions on how to proactively eliminate worker hazards on construction sites. The platform consists of about 100,000 real records and a real-time monitored database featuring various safety indices, such as workers' altitudes, heart rates, and fatigability during construction, which are determined through various wearable devices. The data types are customized and integrated by a research team in accordance with the characteristics of a specific project using hypertext transfer protocol (HTTP). The results can be helpful as efficient tools to ensure successful safety management in complex construction situations. This study is expected to provide three significant contributions to the field, including real-time fatigability analysis and tracking of workers on-site; providing early GPS-based warnings to workers who might be accessing dangerous spaces or places; and monitoring the workers' health indices, based on details from 100,000 cases.

• International conference on construction engineering and project management
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• 2011.02a
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• pp.629-635
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• 2011

Retentions are generally considered to be intended to act as a powerful tool to incentivize contractors/subcontractors to remedy defective work in cases of non-performance. This study attempts to establish the extent to which retentions can be used for this purpose by investigating case law connected with insurance and defective work. One of the significant questions is whether retentions are sufficient to deal with construction defects or value of retentions in the rectification of defects is illusory. The cost to repair a defect may vary depending on a number of components including type, cause, magnitude and the construction stage at which the defect occurs. It is expected that a review of existing cases on defective workmanship will provide an insight on the issues and whether retentions are effective in their intended function. In order to establish their functionality, the study described in this paper investigated 6 construction insurance cases to identify the critical issues and the causes of dispute. It was found that the nature and the cause of defects were different in each case. It was also established that certain defect types not covered by insurance may be covered by retentions - potentially one of the key uses of a retention strategy. It is expected that the findings will assist in forming a view on the quantum of money that may be required paving the way for a first time understanding on a rational basis for setting up retention regime.

• Korean Journal of Construction Engineering and Management
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• v.10 no.3
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• pp.130-138
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• 2009

Bromilow's time-cost (BTC) relationship was examined for building projects in Vietnam using actual construction time and total construction cost. Data set was collected from 77 historical building construction projects completed between 1999 and 2005 which were adjusted by consumer price index (CPI) to 2000 price. Time-cost equations were specified respected to two sectors, public and private, in Vietnamese construction industry and all cases. It is shown that a public funded building project has the longer construction duration than a similar budget private funded project. The resulting models are statistically significant. The adjusted R-square coefficients of all cases, public and private projects models are respectively 0.403, 0.436 and 0.377 mean that the BTC regression lines moderately fit the data set.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2005.05a
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• pp.219-222
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• 2005

Recently, remodeling has been a major field of the building construction that comes up for the alternatives of the reconstruction and the economical construction method. In the almost cases, the engineering capacity for the repair/rehabilitation of the remodeling should satisfy also the owner's various needs (eg, the minimum construction time, etc.) and the safety of the building. Also, the engineering and construction technique for remodeling should be applied to the contrary point of view of the general construction method. But, the many problem actually has arose from the wrongly applied construction method that is caused with the insufficient researches and development. Therefore, this study would suggest the necessities and the directions of developing the elementary engineering technique and the method that satisfy the owner's various needs for the remodeling and repair/rehabilitation of the multi-owned building as multiplex shop, with the successful construction cases.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2005.05a
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• pp.107-112
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• 2005

Renovation of existing sports facilities or construction of temporary ones for international complex games requires a wide variety of hundreds of sub construction projects to be awarded at the same time but there are few precedents required regarding the study of tendering process required in such cases. As award of construction contracts to build sports facilities for various international complex games is a critical determinant of fate of international complex games in the initial phase, it is very critical that adequate construction tendering process bedetermined. This research is aimed to study tendering cases for renovation or construction of critical international sports facilities to enhance efficiency of facility construction and define most reasonable tendering approach to satisfy schedule constraints often associated with international complex games and contribute to improvement of international competitiveness of their host cities and propose a direction for further development. This study also provides inputs to subsequent sports events of comparable scale to minimize trial and error.