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Dr. Neal CIS 480 MS Project Concepts Dr. Greg Neal CIS 480 Systems Analysis and Design.

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Presentation on theme: "Dr. Neal CIS 480 MS Project Concepts Dr. Greg Neal CIS 480 Systems Analysis and Design."— Presentation transcript:

1 Dr. Neal CIS 480 MS Project Concepts Dr. Greg Neal CIS 480 Systems Analysis and Design

2 Dr. Neal CIS 480 Pert Network

3 Dr. Neal CIS 480 Gantt Chart 1,2 & 3 all start at beginning

4 Dr. Neal CIS 480 Task List Early Start Late Start Slack Difference Early-Late Critical Path

5 Dr. Neal CIS 480 Calculation of EarlyStart,LateStart,Slack Task Three (3 days) –EarlyStart (Project Start on 6/1/06) –LateStart = Task 7 LateStart – Task 3 duration: 6/2/06 Task Seven (6 days) –Task 7 StartFinish predecessor of Task 3 –EarlyStart =Task 3 Finish 6/5/ day: 6/6/06 –LateStart = Task 9 LateStart – Task 7 duration: 6/7/06 Task Nine (3 days) –Task 9 StartFinish predecessor of Task 7 –EarlyStart = Task 7 Finish 6/13/ day: 6/14/06 –LateStart = Task 10 Start – 3 days: 6/15/06 Forward Calculation Backward Calculation Slack 1 day

6 Dr. Neal CIS 480 Task Dependencies Finish-to-Start (FS) –Task B cannot start until task A finishes Start-to-Start (SS) –Task B cannot start until task A starts (both start the same time) Finish-to-Finish (FF) –Task B cannot finish until task A finishes (both finish at the same time) Start-to-Finish (SF) –Task B cannot finish until task A starts

7 Dr. Neal CIS 480 Dependency Gantt Examples FinishStart(FS) StartStart(SS) FinishFinish(FF) StartFinish(SF)

8 Dr. Neal CIS 480 Lead and Lag Dependencies 1 day Lag 1 day Lead


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