Abstract: For design-bid-build (DBB) projects, the assumption is that because the bid cost of the lowest bidder is usually below the estimated cost of the project, change orders during construction will increase. This study collected ...

Abstract: A capital investment of about USD 1.3 trillion is needed over the next 25 years to repair or replace the drinking water main breaks that occur each year in the United States. The use of two alternative delivery ...

Abstract: Costs, change orders, and schedule performances of highway projects built using the design-bid-build (DBB) method by state departments of transportation have been tracked for more than five decades. As technology improves, ...