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Probability Of Failure In Infrastructure Project Unbalanced Bidding, Yuhan Jiang, Yong Bai, Sisi Han, Ting Lin
Probability Of Failure In Infrastructure Project Unbalanced Bidding, Yuhan Jiang, Yong Bai, Sisi Han, Ting Lin
Civil and Environmental Engineering Faculty Research and Publications
Design-Bid-Build infrastructure projects with Unit-Price Contracts have a high risk of quantity and price deviations. Those deviations might be the result of contractors' unbalanced bidding. At the same time, contractors' performance was unknown under unbalanced bidding situations. The researchers utilized the First Order Reliability Method and Statistical Analysis to evaluate contractors' bidding performances and engineers' estimating performances with bidding and settlement data of 163 NDDOT projects. Results showed that contractors adopted unbalanced bidding strategies as follows: if quantities were overestimated, then they underrated unit price; if quantities were underestimated, then they overrated unit price to maintain projects' Bid Total Amount …