6 Terms Relating To Schedule Management For Projects
In my previous article, I have talked about Standard Schedule Diagramming Notations for projects. In this article, I want to talk about six terms relating to schedule management for projects. Follow me as we will look at these terms together in this article.
#1 The Critical Path
The critical path is the network path that has the longest duration. Activities on the critical path cannot be displayed or the whole project will be delayed unless subsequent activities are shortened.
The critical path is calculated by doing a forward pass to calculate the Early Start and Early Finish for each activity and then a backward pass to calculate the Late Start and Late Finish for each activity . The path with the longest duration and no scheduling flexibility is the critical path.
Float is the amount of time an activity can be delayed from it’s Early Start without delaying the project finish date or the consecutive activities . Float occurs only in activities that are not on the critical path. Float is also called slack. There are two types of floats;Total and Free.
#3 Total Float
Total float is a type of float where the total amount of time an activity requires can be delayed without delaying the project finish date. Total float for an activity can be calculated by subtracting it’s Early Finish from.its Late Finish or it’s Early Start from it’s Late Finish.
Please note that when you see the term float by itself, it generally refer to total float.
#4 Free Float
Free float is the amount of time an activity can be delayed without delaying the Early Start of any activity that immediately follows it. It allows flexibility of the start or finish time within the activity only.
If there is a strong of activities with float, free float will be available only at the end of the string.
Free Float for an activity is calculated by subtracting the Early Finish of the activity from the Early Start of it’s successor activity.
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