Float_(project_management)
In project management, float or slack is the amount of time that a task in a project network can be delayed without causing a delay to:[1]: 183
- subsequent tasks ("free float")
- project completion date ("total float").
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Total float is associated with the path.[2]: 508 [1]: 183 If a project network chart/diagram has 4 non-critical paths, then that project would have 4 total float values. The total float of a path is the combined free float values of all activities in a path.
The total float represents the schedule flexibility and can also be measured by subtracting early start dates from late start dates of path completion.[3][2]: 502 [1]: 183 Float is core to critical path method, with the total floats of noncritical activities key to computing the critical path drag of an activity, i.e., the amount of time it is adding to the project's duration.[4]