| Title |
A Development on the Model to predict the Degree of Subcontract Tender Variability in Construction Projects |
| Abstract |
The purpose of this study is to provide a model for the reasonable tender administration means to predict the degree of subcontract tender variability. In construction project of Korea. From the sample group of 3l3 tender packages and l.003 individual tenderers, the variability or tendering range and the coefficient of variation(C.O.V) were analyzed as 26.5% and 8.4% in average respectively which appears to be approximately two times higher than those by prime contractors, i.e. 14.1% and 4.9%. This has been presumably a causal of unstable business operation of the specialty contractors or the transitional risks of the subcontracts tender and contract performance procedures. On one hand. There appeared to be a relationship between the leveI of Qualification and skill that subcontractors possessed and the work characters and unit price, etc., and the amount of the variability in the tenders : the higher the technology and engineering and the other factors of the trades are the lower the variability in the tenders and coefficient of variation As a result of the regression analysis by computing the amount of contribution between the fixed individual variables in order to provide the prediction function of the subcontract tender variability degree for the formula of subcontracting characters to the prime contractors and the estimation of tender prices to the subcontractors as well, the prediction model coefficients have been derived. |