Browse > Article
http://dx.doi.org/10.5345/JKIBC.2021.21.5.495

Analysis of Impact Factors for the Improvement of Conceptual Cost Estimation Accuracy for Public Office Building  

Jo, Yeong-Ho (Department of Architectural Engineering, Gyeongsang National University)
Yun, Seok-Heon (Department of Architectural Engineering, Gyeongsang National University)
Publication Information
Journal of the Korea Institute of Building Construction / v.21, no.5, 2021 , pp. 495-506 More about this Journal
Abstract
A Conceptual cost estimate, which is computed in the preliminary step of a project, is important for decision-making by a contractor in terms of the project budget, economic feasibility and validity analysis, and alternative comparisons. Therefore, a high error rate of a prediction model for a conceptual cost estimate can lead to various problems including excessive project expenditures and a delayed break-even point. this study proposed optimal impact factors by configuring quantitative impact factors computable in a preliminary step in various cases(combinations of impact factors). subsequently, the accuracy of different cases was comparatively analyzed by using the cases as input values of a prediction model using regression analysis. when the optimal combination of impact factors proposed in this study and other combination of impact factors were applied to the prediction model, the regression analysis-based prediction model exhibited 0.2-4.7% improvements in accuracy, respectively. the optimal combination of impact factors proposed in this study improved the accuracy of the prediction model of a conceptual cost estimate by removing unnecessary impact factor.
Keywords
conceptual cost estimate; regression analysis; impact factor;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Ahn YS, Song KR, Heo JM. Improving the accuracy of screening of cost estimating in early construction project phase. Journal of the Architectural Institute of Korea Structure & Construction. 2003 Nov;19(11):133-40.
2 Song KR. A study on the standard for approximate quantity of framework of apartment housing for using scatter diagram & heptagram method. Journal of the Architectural Institute of Korea Structure & Construction. 2005 Oct;21(10):167-74.
3 Park UY, Kim GH. A study on predicting construction cost of apartment housing projects based on support vector regression at the early project stage. Journal of the Architectural Institute of Korea Structure & Construction. 2007 Apr;23(4):165-72.
4 Son JH, Kim SK, Kim JO. A study on the analysis and estimation of the construction cost by using artificial neural network in the btl projects for educational facilities. Journal of the Architectural Institute of Korea Structure & Construction. 2008 Jun;24(6):136-42.
5 Kim KH, Park CS, Chang SH. Web-based cost planning program for high-rise office building. Korean Journal of Construction Engineering and Management. 2005 Apr;6(2):69-79.
6 Park YJ, Won SK, Han CH, Lee JB. A study on 3D BIM collaborative approximate estimating model of structural work for apartment projects. Journal of the Architectural Institute of Korea Structure & Construction. 2011 Jun;27(6):123-30.
7 Son BS, Park MS, Lee HS, Lim DH. Analysis the schematic cost estimating model based on quantity variation in building projects using the case study. Journal of the Architectural Institute of Korea Structure & Construction. 2008 Jun;24(6):109-18.
8 Kim SM, Cho JH, Lee JS, Chun JY. Cost estimating model of structural elements using approximate quantity survey in preliminary building design phase. Journal of the Architectural Institute of Korea Structure & Construction. 2009 Dec;25(12):155-64.
9 Jung SH, Gwon OB, Son JH. A study on the analysis and estimation of the construction cost by using deep learning in the smart educational facilities -Focused on planning and design stage-. Journal of the Korean Institute of Educational Facilities. 2018 Nov;25(6):35-44. https://doi.org/10.7859/kief.2018.25.6.035   DOI
10 Seo JK, Kim SM, Cho JH, Chun JY. Supporting model of cost planning using case-based reasoning in pre-design phase-focused on the case of public office building. Journal of the Architectural Institute of Korea Structure & Construction. 2010 Apr;26(4):159-68.
11 Yim JH, Park JM, Kim OK. Cost estimating method of public building construction through construction scale. Journal of the Korea Institute of Building Construction. 2015 Jun;15(3):307-16. https://doi.org/10.5345/JKIBC.2015.15.3.307   DOI