• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.597-601
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• 2006

There are considerable amount of man power and time spent for analysis and selection of various materials due to the inadequate application system and rapid searching process of material related information in each stage of building production process. Also, due to the insufficiency in recycling system of important information created for each process, they are hoarded at each task stage and project completion. As a result, because of the repetition of the similar/identical tasks on each process, it is the major reason for impeding the efficient employment of manpower of the company and decreasing competition of the company. Moreover, in selecting finish material in the project field, there are many difficulties due to the lack of technical information such as product characteristics and field applications. The construction quality also affects the profit and loss of the product which calls for a need to develop continued information management system that the finish material related examples could be shared in real time. The objective of this study is to propose a building finish material information which the real time research and application is possible to raise the productivity. TO do this, the current material information task status analysis and questionnaire research should be conducted to understand the demand of system development and reflect the result onto the system for easy access and application. Therefore, the building finish material information system for enhancement of productivity of construction task proposed in this study is expected to be utilized in enhancement of construction quality, maximization of company profit, and strengthening of company competition.

• Korean Journal of Construction Engineering and Management
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• v.12 no.2
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• pp.111-120
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• 2011

High-rise buildings have recently increased over the residential, commercial and office facilities, thus an understanding of construction cost for high-rise building projects has been a fundamental issue due to enormous construction cost as well as unpredictable market conditions and fluctuations in the rate of inflation by long-term construction periods of high-rise projects. Especially, recent violent fluctuations of construction material prices add to problems in construction cost forecasting. This research, therefore, develops a time-series model with the Box-Jenkins methodologies and material prices time-series data in Korea in order to forecast future trends of unit prices of required materials. BIM (Building Information Modeling) approaches are also used to analyze injection time of construction resources and to conduct quantity takeoff so that total material price can be forecasted. Comparative analysis of Predictability of tentative ARIMA (Autoregressive Integrated Moving Average) models was conducted to determine optimal time-series model for forecasting future price trends. Proposed BIM based time series forecasting model can help to deal with sudden changes in economic conditions by estimating future material prices.

• 월간 기계설비
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• s.232
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• pp.90-91
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• 2009

국내는 물론이고 세계 주요 국의 주가 지수가 금융 위기 이전으로 회복됐다고 말한다. 물론 우리가 느끼는 실물경기하고는 크게 거리가 있다. 하지만 환란이나 금융위기가 순식간에 닥쳐 왔듯 기회도 생각지 못한 때에 찾아 올 것이다. 다소 막연하고 시기상조인 듯 하지만 경기, 특히 우리 설비건설 업계에 언젠가 따뜻한 햇볕이 든다면 그 혜택을 누릴 준비가 됐는지 점검할 때라고 생각한다. 건설업의 활황에는 반드시 자재 가격 폭등 및 품귀가 따라 오기 때문이다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.6D
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• pp.753-760
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• 2009

This study analyzed the fluctuation of the construction material cost from 2001 to 2008 in Busan to examine the effect of the fluctuation of the construction material cost on lotting price of the multi family attached house. The major findings are as follow. First, as the result of the analysis on four materials such as reinforced bar, remicon, PHC piles, Copper Tubes, those take largest portion of construction cost, it was found that the there is wide difference in price fluctuation of the each materials. The reinforced bar and Copper Tubes showed high price increase by an average 14.03% and 14.91% per year while remicon, PHC piles remained almost unmoved by an average 0.86% and 2.41%. Second, According to the result of the analysis on the mutuality between the fluctuation of the construction material cost and the lotting price of the multi-family attached house, it was found that the fluctuation of the construction material cost have the most enormous effect on the sale price of the multi-family attached house, when there is 3 month time lag in reinforced bar, remicon, PHC piles, Copper Tubes, commonly. Also this mutuality continues to 6 month, 9 month and 1 year, although it decrease a little bit.

• 월간 기계설비
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• s.238
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• pp.86-87
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• 2010

최근의 설비 자재값 움직임을 보노라면 기억하기도 싫은 2008년 자재값 폭등이 오버랩된다. 당시도 원자재 가격 폭등과 매점 매석에 의한 가수요 등으로 설비 자재 가격이 하루가 다르게 치솟았다. 다시 그런 상황이 벌어지지 않기를 바라지만 현재의 양상이 그때와 많이 유사하다는 점은 부인할 수 없는 사실이다.

• 월간 기계설비
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• s.242
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• pp.88-89
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• 2010

사람에게 족보가 있고 그 뿌리가 되는 조상이 있듯이 설비 자재 역시 족보가 있고 뿌리가 있다. 강철, 주철, 스테인레스 강 등은 원래 그 뿌리가 하나이지만 중간에 누구와 만나 결혼하느냐에 따라 특성이 전혀 다른 품격의 자손을 낳는다. 결국 최종 자재의 가격은 그 시조 및 부모의 특성, 탄생(?)의 난이도, 출생지 등에 따라 천차만별이 될 수밖에 없다. 따라서 자재 가격에 전략적으로 대응하려면 어느 한 면 만 보아서는 안되고 입체적으로 다각도로 여러 요인을 분석해 보아야 한다.

• Korean Journal of Construction Engineering and Management
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• v.12 no.4
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• pp.59-69
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• 2011

Construction works have become larger and more complex, improving productivity by introducing Information Technology (IT) is pursued. In this circumstance, many different kinds of project management system is being introduced, and various IT technologies are applied such as Personal Digital Assistant (PDA), Bar Code, Radio Frequency Identification (RFID), Web Camera, and so on. However, these kinds of technologies might cause reprocessing of information and ineffectiveness of project because of lack of real time information processing technology or separation between construction sites and management offices. Therefore, this research aims to develop Application that can be applied efficiently for construction material management, by understanding problems of former management system with questionnaires and extracting functions with analysis of requirements. This will be possible to input information automatically, to process and check material information in real time, and to identify the location of necessary material. Then, the problem of separation between construction sites and management offices are solved, and as a result, more efficient management of materials in construction sites will become possible.

• 월간 기계설비
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• s.275
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• pp.68-69
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• 2013

• 월간 기계설비
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• s.265
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• pp.70-71
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• 2012

• 월간 기계설비
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• no.9 s.218
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• pp.80-81
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• 2008