What is free float and how it can be reduced

Question

Accepted Answer

Free float is the amount of time an activity can be delayed without affecting the early start of its successor activity.

Free float is calculated by subtracting the duration of an activity from the amount of time available before its successor activity must start.
Reducing free float can be achieved by shortening the duration of the activity or by overlapping activities.
Free float is important in determining the critical path of a project and identifying potential delays.
For example, if an activity has a duration of 5 days and its successor activity must start no later than day 10, then the free float for that activity is 5 days.
If the free float for an activity is reduced to zero, any delay in that activity will cause a delay in the project's completion date.