Brian F. OByrne (F, he says, stands for frozen.) owns a frozen food company and is in the process of developing an information system for tracking shipments to warehouses. This is the information that the project management team has given him.

7 weeks back they started the systems development process. The first five weeks were spent on the construction of the process models. On its completion they started developing decision trees. Two more weeks worth of work is still pending on this activity. On completing the construction of the decision trees, the next 10 weeks will be spent on revising the decision trees. On completing the construction of the process models, work will immediately start on organizing the data dictionary. This activity has been assigned 7 weeks. Two weeks have been assigned for constructing output prototype. Since, this is an independent piece of work, this was completed at the beginning of the systems development process. On completion of the output prototype, work on revising the output design was also started. This process requires a total of 9 weeks. The team is also working on writing use cases from the beginning of the systems development process. This activity was estimated to take 10 weeks in total. On completion of the use cases, data dictionary and revision of the output design, the database design activity can start. This activity is estimated to take 8 weeks. The last activity would be to write up the project. This would take 4 weeks and is dependent on the completion of the database design and revision of the decision tree.

1. Using the information given above, construct a WBS, Gantt Chart, and Network Diagram.

2. List all paths, and calculate and identify the critical path and the duration associated with it.