Ranking the Building Construction Estimating Cost Factors using Terrell's Transformation Technique

Toh, Tien Choon and Ting, Connie and Ali, Kherun Nita and Aliagha, Godwin Uche and Munir, Omar and Lim, Cheng Sim and Hee, P.Y. (2010) Ranking the Building Construction Estimating Cost Factors using Terrell's Transformation Technique. In: 2nd International Postgraduate Conference on Infrastructure and Environment, IPCIE 2010, 1 - 2 June 2010, Hong Kong.


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Determination of estimating cost factors and examination of their degree of influence are important in developing reliable cost models while enhancing the competitiveness of contracting organizations during tendering. The objective of this study was to identify the factors influencing building contractors' cost estimating practice. This was achieved through a comparative study of one hundred and twenty-three Malaysian building contractors classified into three categories, specifically, small, medium and large contractors. Seventy-nine factors influencing project cost estimating practice were identified through literature and interviews. These factors were grouped into seven categories based on Akintoye's (2000) study on factors influencing project cost estimating practice in the United Kingdom which included of project complexity; technological requirements; project information; project team requirement; contract requirements; project duration; and market requirement. Priority ranking of cost-influencing factors was conducted using survey questionnaire distributed to quantity surveyors, estimators and contractors based in Klang Valley, Malaysia. Terrell's transformation index computation, coefficient of variation (CV, and Kendall's coefficient of concordance (W)were employed to analyze the data. Findings from Terrell's transformation index revealed that 35 of 79 factors were regarded by the research participants working for the small, medium and large contracting firms in Klang Valley, Malaysia as highly relevant for building projects cost estimating practice. However, Kendall's concordance test showed low level of concordance among contractors in ranking estimating cost-influencing factors.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Cost factors, cost estimating, building contractors, Terrell's transformation, Malaysia
Subjects: H Social Sciences > H Social Sciences (General)
Divisions: Faculty of Built Environment > Construction
Faculty of Built Environment > Construction Contract Management
Depositing User: FAB IR Admin
Date Deposited: 17 Aug 2014 09:17
Last Modified: 17 Aug 2014 09:17
URI: http://epublication.fab.utm.my/id/eprint/474

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