INDEPENDENT FLOAT
Independent float is that portion of the total float within which an activity can be delayed for start without affecting the float of the preceding activities. It is computed for an activity by subtracting the tail event slack from its total float.
Thus, independent float can be calculated as under:
Independent Float = Total Float – Tail Event Slack
Note: In case negative value is obtained, it is taken as zero.
Computation of Total Float, Free Float and Independent Float
It may be observed that the total float of activities lying on critical path is zero.
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