As the project manager for a high$-$profile runway construction project at a major international airport, your primary task is to develop a comprehensive Work Breakdown Structure $($WBS$)$ to ensure effective project management. The project involves expanding and renovating the existing runway to accommodate larger aircraft. Your assignment is divided into the following components:

$1.$ WBS Development $(35$ marks$)$:

$($a$)$ Develop a detailed Work Breakdown Structure $($WBS$)$ for the entire runway construction project. Clearly define major phases, tasks, and subtasks, ensuring a hierarchical structure that captures the project's scope. $(25$ marks$)$

$($b$)$ Provide a rationale for the chosen structure, explaining how it aligns with the specific requirements and intricacies of runway construction. Consider factors such as project complexity, resource allocation, and dependencies between tasks $(10$ marks$)$

$2.$ WBS Dictionary $(10$ marks$)$:

$($a$)$ Create a WBS Dictionary that provides detailed descriptions for each element in the WBS$.$ Include information such as deliverables, responsible parties, milestones, and any relevant technical details. $(6$ marks$)$

$($b$)$ Discuss the significance of the WBS Dictionary in enhancing project communication, coordination, and understanding among project team members and stakeholders. $(4$ marks$)$

$3.$ Integration with Project Management Processes $(5$ marks$)$:

$($a$)$ Explain how the developed WBS integrates with other project management processes, such as scheduling, cost estimation, and risk management.

$($b$)$ Illustrate how the WBS serves as a foundational tool for project planning and execution, contributing to the overall success of the runway construction project.

$4.$ Conclusion $(5$ marks$)$:

$($a$)$ Summarize the key elements of the developed Work Breakdown Structure and its dictionary for the runway construction project.

$($b$)$ Highlight the importance of a well$-$structured WBS in achieving project objectives, and briefly discuss potential challenges and benefits associated with its implementation.