• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.626-627
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• 2011

본 논문은 전기연구원에서 수행한 1차년도 조사인 수용가별 정전비용 산정에 대한 자료를 바탕으로 각 수용가별 적정 예비전원 설비 구축비용의 산정에 대해 논의하고자 한다. 각 수용가별 적정 예비 전원설비비용을 산정하기 위해 우선적으로 정전 시 수용가가 필요로 하는 예비전력량과 평균 정전시간에 대해 조사될 필요가 있다. 본 논문에서는 1차년도 조사 자료를 바탕으로 수행되었기 때문에 1차년도 자료에서의 사용전력량 전체를 예비전력량으로 계산하도록 하였다. 각 수용가별 예비전력량으로부터 설치될 UPS 용량과 비상발전기 용량을 선정한다. 평균정전시간은 각 수용가별로 조사된 정전시간으로부터 평균값을 구하여 절상하도록 하였다. 선정된 UPS 용량과 비상발전기 용량으로부터 설치비용을 계산한다. 본 과제에서는 2011년 표준품셈과 2011년 시중노임단가를 참고로 설치비용을 계산하였다. 산출된 수용가별 설치비용과 이전에 조사된 정전비용으로부터 회수기간을 구하였고, 이 값을 지표로하여 각 수용가별 예비전원설비에 대한 타당성을 판단하였다.

• Korean Journal of Construction Engineering and Management
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• v.14 no.4
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• pp.24-34
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• 2013

Since 2004, the government decided to gradually introduce Actual Cost Data into cost estimate for improving problems of below-cost tendering and to reflect fair market price through competition and carry contract efficiently. However, there are many concerns that Actual Cost Data has not reflected real market price, even that has contributed to reduce the government's budget. General construction firm's burden for labor cost is imputed to specialty contractors and eventually it becomes construction worker's burden. Therefore, realization of Actual Cost Data is very important factor to settle this system. To understand realization level and make short term forecast, this paper drew construction group of which labor cost constitutes more than 95% of direct cost, and compares their Actual Cost Data with relevant skilled workers's unit wage and predicts using time series analysis. The bid price which is not be reflected market price accelerates work environment changes and leads to directly affect such as late disbursement of wages, bankruptcy to workers. Therefore this paper is expected to be used to the preliminary data for solving the problem and establishing improvement of Actual Cost Data.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.40 no.5
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• pp.527-534
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• 2020

A significant factor in construction work is cost. At early- and advanced-stage design, costs should be calculated to derive realistic cost estimates according to unit price calculation. Based on these estimates, the economic feasibility of construction work is assessed, and whether to proceed is determined. Through the Korea Institute of Civil Engineering and Building Technology, the construction cost index has been calculated by indirect methods after both the producer price index and construction market labor have been reprocessed to easily adjust the price changes of construction costs in Korea, and the Institute has announced it since 2004. As of January 2000, however, the construction cost index was released, and this has a time constraint on the correction and use of past construction cost data to the present moment. Variables were calculated to compute a rough construction cost that utilized past construction costs through surveys of the producer price index and the construction market labor force consisting of the construction cost index. After significant independent variables among the many variables were selected through correlation analysis, the construction cost index from 1970 to 1999 was calculated and presented through multiple regression analysis. This study therefore has prominent significance in terms of proposing a method of calculating rough construction costs that utilize construction costs that pre-date the 2000s.