Critical Path AnalysisThe critical path analysis is used in network planning to determine the optimum route for the project from the time the first activity starts till the termination of the last activity. An activity is a part of the critical path if the value specified in the ( and the ( fields in the Activities (tppss2100m000) session, is zero. You can view the critical path on the planning board by selecting the Critical check box in the Project Schedule (tppss2700m000) session. If the activity data is modified, the critical path may change. To view this data, you must regenerate the network planning using the Generate Network Planning (tppss2240m000) session. Float Time: The critical path calculation considers activity relationships, constraints of activities and milestones, and progress to calculate the earliest and latest start and finish dates, free float time, and total float time. Note However, float time for an activity can vary. Float types for an activity:
Calculating float time If the value of the Relationship Type field is equal to Finish-to-Start, the next activity starts when the preceding activity is completed: free float-time (ES)= Earliest start date of the next activity - relation float times - activity duration - earliest start date If the value of the Relationship Type field is Start-to-Start, the next activity and the preceding activity start simultaneously: free float-time (SS)= Earliest start date of the next activity - relation float times - earliest start date The float times are calculated when you run the Generate Network Planning (tppss2240m000) session. If the value of both the float times is zero, the activity belongs to the critical path. Limitation: Network planning can be performed for the project if:
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