Which key factor enhances the effectiveness of the CM at Risk approach?

Incorporating contractor input during the design phase is crucial in the Construction Manager at Risk (CM at Risk) approach as it facilitates collaboration and promotes a shared understanding of project goals between the owner, designer, and contractor. When contractors are involved early in the design process, they can provide valuable insights regarding constructability, cost estimation, and scheduling, which can significantly influence the project's overall success and efficiency.

This engagement not only helps in identifying potential challenges and mitigating risks before they arise but also allows for adjustments to be made while still in the design phase, leading to a more streamlined process and potentially reduced costs. Additionally, this method fosters a cooperative environment where the contractor's expertise enhances the design, resulting in a more practical and feasible outcome for the project.

Other approaches, such as relying solely on fixed-price contracts, would not encourage the same level of collaborative input that contributes to the project's success. Similarly, minimizing communication between parties would be detrimental as it could lead to misunderstandings and errors. Delaying the final project delivery date would not enhance effectiveness but could instead result in increased costs and dissatisfaction among stakeholders. Thus, the active incorporation of contractor input is a key factor that enhances the effectiveness of the CM at Risk approach.