_______ float is defined as the time through which an activity can be delayed without affecting the succeeding and preceding activities.

Question

Question

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JKSSB JE CE 2021 Official Paper Shift 1 (Held on 28 Oct 2021)

Answer 1

Explanation

Slack or Event Float

Slack

It is defined as the amount of time by which an event can be delayed without delaying the project schedule.
Slack of an event = Latest Start Time – Earliest Start Time OR Latest Finish Time – Earliest Finish Time

There are three types of floats.

Total Float (TF)

It is the amount of time by which an activity can be delayed without delaying the project duration.
Extra time available for an activity without delaying the project schedule.
If the value of TF is,
- Positive – Recourses are surplus and can be allocated for other activities.
- Zero – Resources are just sufficient to complete the activity on time.
- Negative – Resources are not sufficient and activity may not complete
Total Float = Latest start time – Earliest start time

Free Float (FF)

· Part of the Total Float, which can be used without affecting the float of succeeding activity.

· Extra time by which an activity can be delayed so that the succeeding activity can be started on earliest start time.

Independent Float

(IF)

It is amount of free float time which can be used without affecting either the head or the tail event.
Independent float = free Float – Tail event slack