Thậm chí sau đó, tất cả các nhiệm vụ và công việc phụ của tất cả các cầu thủ trong tất cả các phòng ban chức năng sẽ đòi hỏi phải xây dựng một biểu đồ thực sự lớn và phức tạp. Một biểu đồ như vậy thực sự là một lai của đề cương chi tiết và sơ đồ cây. Tuy nhiên, các nhà quản lý dự án nhiều người đã dùng đến kỹ thuật này. Bằng cách xây dựng cả một sơ đồ phác thảo và cây WBS và sau đó kết hợp cả hai, tuy nhiên lớn. | Plain English Parallel tasks Two or more tasks that can be undertaken at the same time. This doesn t imply that they have the same starting and ending times. Dependent tasks are those that cannot begin until something else occurs. If you are constructing a building you first have to lay the foundation. Then you can build the first floor the second floor and the third floor. Obviously you can t start with the fifth floor and then move to the third not in three-dimensional space as we know it. Plain English Dependent task A task or subtask that cannot be initiated until a predecessor task or several predecessor tasks are finished. Predecessor task Task that must be completed before another task can commence. The WBS is not the best tool for identifying the relationship between interdependent tasks. When preparing a WSB outline you want to proceed in chronological order much as you want to do with the tree approach. When you combine the outline and tree diagram type WBS you end up with an extended outline describing the tasks and subtasks associated with the elements on the tree diagram. Thereafter you can alter the position of the boxes to be in alignment with what takes place and when. Hence parallel tasks are on the same position on the chart. As you can see in the figure below some items such as assignment and resource occur at the same time. Adding detail to the WBS sequence. Item J F M A M J J A s 0 N D Task A . . _ Task B Task c Task D - Dependent tasks necessarily have to have staggered positions. These can be joined by the arrows that indicate the desired path of events or activities. Milestones don t necessarily require any time or budget as they represent the culmination of events and tasks leading up to a milestone. A milestone may or may not involve a deliverable. Nevertheless milestones are important particularly to project team members because they offer a visible point of demarcation. They let team members know that the project is or is not proceeding
