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Comparative Analysis on Unit Price based on Historical Cost Data Estimating for Large and Small-scale Civil Engineering Works

대·소규모 토목공사의 실적공사비 비교 분석

  • 홍성호 (대한건설정책연구원) ;
  • 신주열 (한국시설안전공단) ;
  • 김창학 (경남과학기술대학교 토목공학과) ;
  • 이동욱 (제주대학교 토목공학과(해양과환경연구소))
  • Received : 2013.05.06
  • Accepted : 2013.05.21
  • Published : 2013.07.30

Abstract

Historical cost data estimating system has been introduced since 2004 in the construction industry. Based on contract prices of past projects, this estimating system estimates construction cost according to work types. The Korea Institute of Construction Technology (KICT) announces the historical cost data twice a year annually. The unit price of a small construction project is higher than large construction project due to the increase on production cost per work unit, equipment and labor cost, etc. However, the historical cost data estimating system is applied to project estimation uniformly regardless the construction project's size. This study compared and analyzed the historical cost data of large and small construction project to indicate the problem of historical cost date estimating system. The study derived that the unit price of a small construction project is 21.8% higher than that of large construction project.

실적공사비 제도는 2004년부터 도입된 제도로서, 과거의 유사 공사의 계약단가를 토대로 공종별 단가를 파악하여 예정가격을 결정하는 방식이다. 이러한 실적공사비 단가는 매년 2회 한국건설기술연구원에서 발표하고 있다. 소규모 공사의 공사비 단가는 작업단위당 생산비용 증가, 장비 및 노무비 등 상승으로 인해 대규모 공사보다 높을 수밖에 없는 것이 건설공사의 특성이다. 그러나 실적공사비 단가가 공사의 규모와 무관하게 일률적으로 적용되고 있어 문제점으로 대두되고 있다. 본 연구에서는 이러한 실적공사비 제도의 문제점을 파악하기 위해서 대 소규모 토목공사의 실적공사비를 비교 분석하였으며, 소규모 토목공사의 실적공사비가 대규모 토목공사에 비해 21.8% 높은 결과가 도출되었다.

Keywords

References

  1. Ahn, J.-S., Lee, J.-H., Kim, Y.-S., Tea, Y.-H. and Lim, H.-S. (2009). "A study on the improvement of revision process and depreciation method of the construction standard estimating system." Journal of the Architectural Institute of Korea(Structure), Vol. 25, No. 8, pp. 195-204 (in Korean).
  2. CAK(Construction Association of Korea). (2009a). Statistics yearbook of construction industry (in Korean).
  3. CAK(Construction Association of Korea). (2009b). Analyses of cost items in complete works (in Korean).
  4. CAK(Construction Association of Korea). (2010). Historical cost data estimating system, What is problems and How can improve?, CAK's internal materials (in Korean).
  5. Choi, S.-I, Lee, B. N., Lee, S.-W. and Choi, M.-S. (2006). An assessment and improvement scheme of a new cost estimation system in Korean public construction industry(II), CERIK (Construction and Economy Research Institute of Korea) (in Korean).
  6. Choi, S.-I, Song, B.-K. and Kim, Y.-J. (2004). An assessment and improvement scheme of a new cost estimation system in Korean public construction industry, CERIK(Construction and Economy Research Institute of Korea) (in Korean).
  7. Ha, G.-J., Choi, M.-K, Yi, D.-Y., Lee, Y.-S., Kang, T.-K. and Ha, M.-S. (2008). "A study on the application methods of historical data cost method by historical data analysis in construction cost." Proceedings of AIK Branch Federation Conference, pp. 531-534 (in Korean).
  8. Jeon, S.-H. and Koo, K.-J. (2008). "Comparison of labor input from standard quantities per unit and actual quantities in apartment reinforced concrete work." Journal of Korea Institute of Construction Engineering and Management, Vol. 9, No. 2, pp. 182-189 (in Korean).
  9. Jun, S.-H. and Choi, I.-S. (2005). "A study on the construction cost estimating system based on historical data in apartment housing." Journal of Korea Institute of Building Construction, Vol. 5, No. 1, pp. 111-122 (in Korean). https://doi.org/10.5345/JKIC.2005.5.1.111
  10. Kang, L. S., Jeong, H. W., Kwon, J. H. and Youn, S. M. (2006). "Improvement method of cost estimating based on actual unit price for small size construction." Proceedings of KSCE Conference, pp. 1060-1063 (in Korean).
  11. KICT (Korea Institute of Construction Technology). (1998). Research report for accumulation and implementation of historical unit price, 2nd Report (in Korean).
  12. KICT (Korea Institute of Construction Technology). (2008). Current situation of cost estimate system for public construction project in Korea, KICT's internal materials (in Korean).
  13. Kim, G. H. (2008). A compensation method of historical unit price for public construction projects, Chung-Ang University, Master's Thesis (in Korean).
  14. Kim, K.-S., Hyun, C.-T., Hong, T.-H., Jo, S.-M. and Mun, H.-S. (2010). "Development of an unit cost modification model for proper actual cost data in small building construction projects." Journal of Korea Institute of Building Construction, Vol. 10, No. 1, pp. 81-89 (in Korean). https://doi.org/10.5345/JKIC.2010.10.1.081
  15. Kim, W .T., Choi, S.-I. and Lee, B. N. (2010). Improvement schemes on cost estimates of the public construction projects, CERIK (Construction and Economy Research Institute of Korea) (in Korean).
  16. Kim, W. T. and Yoon, C. H. (2006). Inspection of cost mana-gement of foreign public project and implementation of historical cost data estimating system - USA and UK, CERIK (Construction and Economy Research Institute of Korea) Working Paper (in Korean).
  17. KOSCA. (2009). Statistics yearbook of special construction industry (in Korean).
  18. Ministry of Land, Transport and Maritime Affairs and KICT (Korea Institute of Construction Technology). (2004-2011). Works and unit prices for application of historical cost data estimating system in construction projects (in Korean).
  19. Ministry of Land, Transport and Maritime Affairs and KICT(Korea Institute of Construction Technology). (2010). Conference proceedings of committee for improvement of for historical cost data estimating system (in Korean).
  20. Park, U.-Y. (2006). Inspection of cost management of Japan public project and implementation of historical cost data estimating system, CERIK (Construction and Economy Research Institute of Korea) Working Paper (in Korean).
  21. Yoon, C. H. (2006). Inspection of cost management of UK public project and implementation of historical cost data estimating system, CERIK(Construction and Economy Research Institute of Korea) Working Paper (in Korean).

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