Final answer:
The execution phase in a project starts after the design is completed in the traditional project delivery method. Methods such as fast track and phased delivery allow overlapping phases, whereas lump sum relates to payment, not project phase sequencing. Successful implementation of a project design entails detailed planning, modeling, and potentially iterative refinements.
Step-by-step explanation:
The execution phase of a project cannot start until the design is completed primarily in the traditional project delivery method. In contrast, with the fast track project delivery method, construction activities may begin before the full design is complete, using incremental or phased approaches. On the other hand, a phased project delivery method also allows for overlapping of design and construction activities, albeit in a more structured manner. Lastly, the lump sum delivery method pertains more to the contract type and payment terms rather than the sequencing of design and construction phases.
Implementing the project design involves creating detailed drawings, models, and prototypes, and possibly iterating through the design process for refinement. This repetitive or cyclical design process is part of the sequential method where steps follow one another but may involve iterations for refining the design, demonstrating the spiral design process. In any method, the execution phase is critical for bringing the designed solutions to life, whether through building a physical model, constructing the actual project, or developing a virtual model.