• Korean Journal of Construction Engineering and Management
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• v.18 no.6
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• pp.109-120
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• 2017

Even though domestic construction companies are expanding into overseas construction markets, the profitability of overseas project are decreasing and finally some biggest domestic construction companies recorded heavy deficit one after another in 2013. Contract management, which is very deeply related to profitability, is the most difficult area to domestic construction companies, especially in Middle East and Asia where they have the highest market share and a high level of contract management is required. The purpose of this study is to assess their contract management competences to help them improve contract management skills and strategies. First, we defined the overseas project contract management process and selected competences from the each process stage. Then, we conducted a survey with overseas project experts. For considering their competences from various angles, we divided survey groups into domestic construction groups and other groups (Contract consultancy agencies and Construction research institutes) to understand the internal and external perspective of the domestic construction companies' contract management competences. The results of survey was analyzed by using paired samples t-test, Borich Needs Assessment Model and Independent t-test. We expected that the results of this study could contributes to establish strategies for enhancing the domestic construction companies' contract management competencies.

• Korean Journal of Construction Engineering and Management
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• v.16 no.1
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• pp.64-73
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• 2015

The theft of construction equipments and materials at construction sites is one of the risk factors that may affect to the productivity as well as the progress of the project. However, managers of the construction site have paid little attention to the security measure, therefore the theft loss at construction sites has been occurred repeatedly every year. In this study the situation analysis has been carried out for the present condition of theft loss of construction equipments and materials as well as its prevention measure based on the questionnaire survey targeting field managers, experienced theft loss at the site, as a part of base study to set up a security measure of construction sites. The main content of this study is analyzing characteristics of theft loss and the degree of impact and risk by it at construction sites, then reviewing the direction of the prevention plan establishment for the future through the analysis of the importance and utilization level of prevention measures. The result of this study would give an opportunity to create an awareness against the theft loss at construction sites as well as can be utilized as a basic survey for the systematic development of concerned prevention measures.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.278-281
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• 2008

As all industries field has changed very quickly, the field of construction faces in many changed. It is the representatively change that focus on the growth of quality level than increase of the quantity in construction. Whether the project successes or not is related to the survival of the company and it is necessity that we need performance measurement indicators to complete the project successfully. The domestic construction company considers overbearingly the cost-performance indicator in executing a project so far. It is rare of studies that suggest the methodology of more deeply measurement and analysis about the each project itself. The performance measured methodology based on Lean Construction is linked with the each project performance measurement methodology. This methodology uses three indicators such as the reliability, effectiveness and productivity at the sane their measuring whether each task is completed at the point of work. The measurement on the three performance indicators measure and evaluate whether the task is completed on the focus of construction duration. The research suggest the work plan reliability and weight of the performance measurement methodology based on the Lean Construction and the three considerately in the scope of measurement. If the suggestion is considered fully, we can indicate more objective and accurate construction project performance measurement indicators based on Lena Construction.

• Korean Journal of Construction Engineering and Management
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• v.20 no.3
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• pp.3-11
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• 2019

The construction of a facility is an act whereby infrastructure such as roads and railways and other facilities such as housing and office spaces are constructed, and due to the characteristics of the relevant industry where such construction is carried out in a custom order method, it requires a long period of time mostly. While the construction is carried out over a long period of time, fluctuations in the price of raw materials required for the construction occur. Therefore, the cost of the construction also fluctuates inevitably. The fluctuation of the construction cost meshes closely with the profit of a constructor and the efficiency of government spending. Therefore, it is necessary to maintain the construction cost at a reasonable level by adjusting the construction cost rationally in order to secure the required construction quality and spend the budget efficiently. The buffer system for solving such problem is the contract amount adjustment system by fluctuations in prices (Escalation/De-Escalation). In this study, the method combining the escalation method based on the item adjustment method was suggested for an efficient contract amount adjustment method. In addition, it is proposed that there be an investigation and codification of matters not applied to government acts and regulations on contracts related to the adjustment of fluctuations in prices legally.

• Journal of the Korea Institute of Building Construction
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• v.9 no.5
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• pp.135-144
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• 2009

The primary focus of this study has been directed towards assessing the potential impact of construction method improvement on a reduction in project cost. A total of 90 actual application cases were collected from a public organization and private construction firms, and 32 cases were used in analysis by adopting a synthetic approach. The level of cost reduction was measured in terms of material and labor cost by comparing the existing method and the improved method. An analysis of the results indicates that project cost can be reduced by up to 5.26 percent compared to a normal project by adopting a synthetic approach. Additional benefits include the assurance of uniform quality, savings in terms of labor and/or materials, and improved productivity. The potential of the applicability of this approach to other types of buildings and the implications of research findings were discussed in detail.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.282-285
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• 2003

The construction industry has been behind in informatization compared to other industries such as banking, manufacturing, medical, etc. since it is not conscious of informatization and it also has difficulties in attracting investments and attracting IT experts. Furthermore, there has been lack of survey and research on that specifically what areas and how much degree they are behind in informatization. This paper presents a framework and strategy for assessment of informatization based on end users' viewpoints. The authors has already performed the assessment of informatization of general contractors based on IT experts' viewpoints. However, this paper tries to assess informatizaton of construction based on end users' aspects. The result of this research is expected to provide various aspects such as assessment, identification of needs, and problems regarding information systems. These could be effectively used as a guideline and a direction for information system development.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.242-245
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• 2003

Most engineering tasks require collaboration between many users in major hospital Construction Projects that have many risks. Loss of cost and change orders occurred in factors such as information exchange, misunderstandings, advanced Technology in hospital projects. Moreover, changes in context, costs, requirements, deadlines, etc. require negotiation of issues that may modify important project characteristics. Each part of the major hospital construction projects have been rapidly changed technology of equipments. Therefore it is a major challenge to make a high level of communication and to have mutual understanding. The objective of this paper is to reduce risks for the design process and construction process of hospital projects.

• The Journal of the Korea Contents Association
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• v.15 no.9
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• pp.555-561
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• 2015

The construction industry is a labor-oriented and quality, cost, and schedule performance is effected by technicians. However, the construction industry have faced a labor shortage problem. Therefore, technician graying and no new workers inflow cause labor shortage and decline of worker's skill level. The utilization of foreign technicians instead of domestic technicians has been increased in the construction industry. This paper performed questionnaire survey for 43 managers on 14 project fields to determine the current status and problems of construction technicians and to propose a improvement plan. As a result, most foreign technicians are carpenters and iron workers, but the skill levels are generally lower than domestics. The major problems for foreign technicians are communication and non-skilled. Then, labor productivity and accident rates of foreign technicians are higher than domestics. This paper proposes that skill training programs, language lessons, and multi-cultural programs are effective to improve foreign workers' problems.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.2151-2155
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• 2008

In case of constructing final closure in sea having big tide variation, the velocity in gap and the seepage velocity under the revet are faster because of inner and outer water level difference of the revet. Thus, the rubbles for final closure lose and the original ground is scoured by piping. There are several difficulties from the view of construction efficiency and safety. This study finds hydraulic phenomena in final closing construction area, develops a program for final closing simulation, minimizes the error during design and construction, and supports the engineering capacity for efficient and safe construction. The existing design method for final closure only considers the flow in gap, but the developed program considers the seepage in revet and flow in closure gap. This developed program chooses the suitable rock size for final closing design and establishes the proper method for final closing construction.

• Explosives and Blasting
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• v.24 no.1
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• pp.39-48
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• 2006

The various alternatives to reduce the construction period and cost in the wide and long tunnel have been attempted recently. However, the concrete lining forming process after finishing tunnel excavation may delay construction period considering the specific conditions of the wide and long tunnel. The concrete lining is indispensible for the road tunnel. For this reason, the blasting-lining synchronizing study had been carried out to reduce construction period in the Gyea-Ryong Tunnel. Lining models were installed at four different distance conditions the floor of the tunnel. After model installation, hundreds of blasting vibration measurements and concrete material tests were performed to calculate the safe distance between blasting point and concrete lining form. The study also introduces a method which can obtain the better ability of construction by improving working environment with the ventilation and the relocation of tunnel equipments in the working places.