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management alpha 10 Minute Guide to Project Management PHẦN 4

Sơ đồ cây WBS (xem hình sau) làm một công việc tuyệt vời của tách các hoạt động chức năng. Thiếu sót chính của nó là để truyền đạt mức độ cao chi tiết nhiệm vụ, sơ đồ cây sẽ là rất lớn. Nó có thể nhận được quá lớn đối với một mảnh giấy hoặc màn hình máy tính duy nhất, và do đó sẽ phải được vẽ trên một biểu đồ bức tường lớn. | When many subteams within an overall project team each have individual responsibilities the outline can be a little unwieldy because it doesn t visually separate activities according to functional lines. A combination tree diagram and outline WBS. The tree diagram WBS see the following figure does a magnificent job of separating functional activities. Its major shortcoming is that to convey high levels of task detail the tree diagram would be huge. It might get too big for a single piece of paper or single computer screen and hence would have to be plotted on a large wall chart. Even then all the tasks and subtasks of all the players in all of the functional departments would necessitate constructing a large and complex chart indeed. Such a chart is actually a hybrid of the detailed outline and the tree diagram. Nevertheless many project managers have resorted to this technique. By constructing both an outline and tree diagram WBS and then combining the two however large and unwieldy the combination gets you end up with a single document that assures the totality of the entire project. Here s an example of a segment of an outline and tree outline WBS combined. More Complexity More Help With this potential level of detail for the project you have been assigned to manage it is important to get help when first laying out your plan. Even relatively small projects of short duration may necessitate accomplishing a variety of tasks and subtasks. Eventually each subtask requires an estimate of labor hours How long will it take for somebody to complete it and what will it cost See next lesson. You will need to determine how many staff hours staff days staff weeks and so on will be necessary based on the plan that you have laid out. From there you will run into issues concerning what staff you will be able to recruit how many hours your staff members will be available and at what cost per hour or per day. Preparing your WBS also gives you an indicator of what project .