KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Comparative Analysis between GDP Deflator Method and Index Adjustment Rate Method on BTL Sewer Rehabilitation Projects in Jeju

제주도 내 하수관거정비 BTL사업의 GDP 디플레이터 방식과 지수조정률 방식과의 비교 분석

  • Received : 2014.09.19
  • Accepted : 2014.12.09
  • Published : 2015.02.01
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Abstract

This study conducted case studies in order to suggest the improvement of GDP (Gross Domestic Product) deflator method which is adopted on calculating fluctuation rate on BTL (Build-Transfer-Lease) sewer rehabilitation projects in Jeju. As a result, because GDP deflator method calculates fluctuation rate by each quarterly, the fluctuation rate of GDP deflator method is higher than it of index adjustment rate method. And GDP deflator method cannot reflect real price because of applying fixed index in whole construction cost for calculating fluctuation rate. Especially, the notification day - the base point influences fluctuation rate and fluctuation amount strongly in GDP deflator method.

본 연구는 건설투자 GDP (Gross Domestic Product) 디플레이터 방식의 물가조정이 이루어진 제주특별자치도 내 하수관거정비 BTL(Build-Transfer-Lease)사업에 대하여 물가변동률 적용에 문제점을 파악하기 위하여 실시되었다. 분석 결과, GDP 디플레이터 방식의 기준지수는 고정값을 사용하며 매분기별 물가변동률이 반영되기 때문에 지수조정률 방식보다 물가변동률이 높게 나타나는 것으로 조사되었다. 그러나 GDP 디플레이터 지수가 총사업비에 일괄적으로 적용되기 때문에 현실적인 물가를 반영하지 못함으로써 정확도가 떨어지는 단점이 있는 것으로 조사되었다. 또한 GDP 디플레이터 방식의 기준지수가 고정값을 사용하기 때문에 기준이 되는 시점(정부고시일)이 물가조정에 매우 크게 영향을 미치는 것으로 조사되었다.

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References

  1. ECOS (Economic Statistics System, The Bank of Korea) (http://ecos.bok.or.kr).
  2. Hong, J. H. and Lee, D. W. (2014). "Analysis of road construction project's escalation under historical data-based estimate system in Jeju." Journal of the Korean Society of Civil Engineers, Vol. 34, No. 2, pp. 667-676 (in Korean). https://doi.org/10.12652/Ksce.2014.34.2.0667
  3. Jeong, K. C. (2008). Problems and improvement schemes to historical cost fluctuation ratio calculation according to the escalation, Chung-Ang University, Master's Thesis (in Korean).
  4. Kang, J. S. (2013). The improvement of performance evaluation on BTL sewer rehabilitation projects in jeju, Jeju National University, Master's Thesis (in Korean).
  5. Oh, B. H. (2012). Improvement of adjustment method for price fluctuation in build transfer lease projects, Chungbuk National University, Master's Thesis (in Korean).
  6. Park, Y. H. (2005). An improvement plan of contract price adjustment through the problem analysis of the current price escalation regulation in construction projects, Chung-Ang University, Master's Thesis (in Korean).
  7. The Bank of Korea (2014). National Accounts 2013 (in Korean).