Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis of Causes and Impact of Change Orders in the U.S. Military Construction Projects

미군 시설공사 설계변경 요인과 영향에 대한 연구

  • Park, Insung (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Kim, Harim (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Lee, Hak-Ju (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Kim, Do-Hyung (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Min, Yoon-Gi (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Cho, Hunhee (School of Civil, Environmental and Architectural Engineering, Korea University)
  • Received : 2021.04.10
  • Accepted : 2021.04.22
  • Published : 2021.06.20
Download PDF
⟨ Previous Next ⟩

Abstract

Change orders that occur frequently during the construction phase, af ect the construction performance in terms of cost, time, quality, safety and environment, and place a huge burden for stakeholders of given projects. This study analyzed the causes of change orders and their impact on the basis of 721 cases and a questionnaire of 164 domestic U.S. military construction participants in a total of 24 U.S. military projects. Important factors for change orders in the US military construction projects were engineering change due to design errors (348 cases, 48.3%), user requests change(86 cases, 11.9%), and different site conditions (69 cases, 9.6%). In addition, due to the change orders, construction cost increased by 6.56% on average and construction period was extended by 21.1% compared to the original schedule. As a result, it is anticipated that domestic construction companies can obtain a better understanding of change orders and construction performance, which may be difficult due to accessibility and limitations to military facilities. Also, it is proposed a successor study that guides in the right direction for the U.S. Military Construction.

미군 공사는 국내 공사와 설계기준과 수행절차 등이 상이하기때문에 설계변경의 원인과 영향도 등도 다른 양상을 보인다. 본 연구는 100억 이상 규모 총 24건의 미군공사에서 발생한 721건의 설계변경 자료와 164명의 미군공사참여자 설문을 바탕으로 미군공사의 설계변경 원인과 그 영향도를 분석하였다. 미군공사에서 중요한 설계변경 요인은 설계 오류에 의한 설계 관련 변경(348건, 48.3%), 발주자 요구(86건, 11.9%), 상이한 현장 상태(69건, 9.6%)로 밝혀졌다. 또한, 설계변경으로 인해 평균 6.56%의 공사비 증가와 계약공기 대비 21.1%의 공기연장이 발생하였다. 본 연구의 결과로 국내 건설사에는 군 시설의 접근성 및 제한성으로 인해 부족할 수 있는 미군공사의 설계변경 및 공사성과의 전반적 이해도를 향상을 기대한다. 이를 바탕으로 향후 미군시설공사의 발전적 방향을 제시할 수 있는 후속 연구를 제안한다.

Keywords

References

  1. Khanzadi M, Nasirzadeh F, Dashti MS. Fuzzy cognitive map approach to analyze causes of change orders in construction projects. Journal of Construction Engineering and Management. 2018 Feb;144(2):04017111. https://doi.org/10.1061/(ASCE)CO.1943-7862.0001430
  2. Kim KU. Assessment of relative importance and improvement research through the analysis of factors causing design changes in private construction projects [doctor's thesis]. [Pusan (Korea)]: Pusan National University. 2014. 99 p.
  3. The Army Corps of Engineers Far East District. Year in Review 2018. 2019 Mar:1-60.
  4. Lee HM. Assessing the effects of change orders on the cost and schedule in the military construction projects. [master's thesis]. [Seoul (Korea)]: Dongguk University. 2013. 83 p.
  5. Lee GM. Analysis and improved methods suggestion of change order in construction projects. [master's thesis]. [Pusan (Korea)]: Pukyong National University. 2008. 97 p.
  6. Anastasopoulos PCH, Labi S, Bhargava A, Bordat CSL, Mannering FL. Frequency of Change Orders in Highway Construction Using Alternate Count-Data Modeling Methods. Journal of Construction Engineering and Management. 2010 Aug;136(8):886-93. https://doi.org/10.1061/(ASCE)CO.1943-7862.0000198
  7. Im, CS, Lee GC. The Influence of Construction Cost by the Variation of Design. Journal of the Architectural Institute of Korea Structure & Construction. 2004 Nov;20(11):107-14.
  8. Gunduz M, Mohammad KO. Assessment of change order impact factors on construction project performance using analytic hierarchy process (AHP). Technological and Economical Development of Economy. 2020;26(1):71-85. https://doi.org/10.3846/tede.2019.11262
  9. Cho YJ. A study on the interpretation for change order clause of USA government contract. Journal of the Korea Institute of Building Construction. 2009 Oct;9(5):105-112. https://doi.org/10.5345/JKIC.2009.9.5.103
  10. Lee SB, Kim BO, Rho BO. A study on the impact of change order delay in the apartment house construction. Journal of the Architectural Institute of Korea Structure & Construction. 2010 Aug;26(8):79-86.
  11. Shin CH, Nam HW, Chun JY. Application of improvement process for building design change support. Journal of the Architectural Institute of Korea Structure & Construction. 2012 Apr;28(4):99-106. https://doi.org/10.5659/JAIK_SC.2012.28.4.99
  12. Nam KW, Jang MH. Preliminary study on applying VE to design change. Proceeding of Journal of the Korea Institute of Building Construction; 2019 Oct 31-Nov 1; Chungju, Korea. Seoul (Korea): Journal of the Korea Institute of Building Construction; 2019. p. 80-1.
  13. Lee JY, Kim DH, Seo YS. A study of the factor of change order in the public construction project - Based on the cases in the Gyeongnam province. Proceeding of the 60th Anniversary and annual Conference of Architectural Institute of Korea; 2005 Oct 24-5; Seoul, Korea. Seoul, (Korea): Journal of The Architectural Institute of Korea. 2005. p. 523-6.
  14. Lee JS, Chun JY. Decision making process for alternative selection of proper design change in construction project. Korean Journal of Construction Engineering and Management. 2010 Mar;11(2):74-82. https://doi.org/10.6106/KJCEM.2010.11.2.74
  15. Kim SK, Kim KB. An analysis of the types of change order and cost increase factor for incheon AG new sports stadium. Proceeding of Journal of the Architectural Institute of Korea; 2016 April 30; Seoul, Korea. Seoul (Korea): Journal of The Architectural Institute of Korea; 2016. p. 89-90.