Title Analysis of the Influence of Design Score and Price Score for Design Build Bidding
Authors Lee, Jinhak ; Woo, Sungkwon ; Lee, Siwook
DOI https://dx.doi.org/10.6106/KJCEM.2023.24.5.044
Page pp.44-51
ISSN 2005-6095
Keywords Design-Build Bidding; Bidding System; Design Scores; Price Scores; Correlation analysis
Abstract Selecting appropriate bidding system in construction projects considering the characteristic of project can be a makeor-break element, so the understanding for bidding system of public construction projects is ever more important from the perspective of both the owner and the contractor. The design-build bidding is commonly referred to as turnkey in Korea, and is a bidding method that is often applied to large public construction projects because it allows new technologies to be applied to the design and facilitates risk management for the owner. In this bidding method, there are only two factors (design score and price score) that affect the selection of the winning bidder, so it is important to understand the influence of each factor, but there is little research on the subject. This study aims to provide a basis for establishing bidding strategies for understanding the influence between design score and price score by analyzing various design-build bidding data of public construction projects. The results of the study show that design score is the factor that has more influence on the ranking of bidders in all three weighted evaluation methods: design-emphasized, price-emphasized, and equalized evaluation. In addition, we found that the correlation between design and price scores was not significant due to the unique bid evaluation structure in Korea.