Which of the following is NOT a common project delivery method in construction?

In construction, traditional project delivery methods include Design-bid-build, Design-build, and Construction manager at risk. Each of these has established frameworks to facilitate collaboration between the parties involved in a project.

Design-bid-build is the most conventional method, where the design is completed first, followed by the bidding process and then construction. This approach emphasizes clear roles and phases.

Design-build integrates the design and construction phases, allowing for more collaboration and streamlining, which can lead to faster project delivery and reduced costs due to a single point of responsibility.

Construction manager at risk involves a construction manager participating in the project during the design phase and committing to completing the project within a guaranteed maximum price. This method fosters collaboration and can help in identifying potential issues early.

On the other hand, Design-repair is not recognized as a common project delivery method within the industry. While repairs may be part of a project's lifecycle, they do not constitute a delivery method by themselves in the same way that the listed options do. Therefore, identifying Design-repair as the response shows an understanding that it does not fit within the standard frameworks used in the construction industry for delivering projects.