Independent Float used in CPM Calculator

✖Free Float is the period by which an activity can shift in its timing without affecting the early start of any succeeding activity or event.ⓘ Free Float [FF₀]			+10% -10%
✖Slack of an Event in a network is the difference between the latest event time and the earliest event time at its terminal point or node.ⓘ Slack of an Event [S]			+10% -10%

✖Independent Float is that portion of the total float within which an activity can be delayed to start without affecting the float of the preceding activities.ⓘ Independent Float used in CPM [IF₀]

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Formula

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Independent Float used in CPM

Formula

`"IF"_{"0"} = "FF"_{"0"}-"S"`

Example

`"12d"="18d"-"6.0d"`

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Independent Float used in CPM Solution

STEP 0: Pre-Calculation Summary

Formula Used

Independent Float = Free Float-Slack of an Event
IF₀ = FF₀-S
This formula uses 3 Variables

Variables Used

Independent Float - (Measured in Day) - Independent Float is that portion of the total float within which an activity can be delayed to start without affecting the float of the preceding activities.
Free Float - (Measured in Day) - Free Float is the period by which an activity can shift in its timing without affecting the early start of any succeeding activity or event.
Slack of an Event - (Measured in Day) - Slack of an Event in a network is the difference between the latest event time and the earliest event time at its terminal point or node.

STEP 1: Convert Input(s) to Base Unit

Free Float: 18 Day --> 18 Day No Conversion Required
Slack of an Event: 6 Day --> 6 Day No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

IF₀ = FF₀-S --> 18-6

Evaluating ... ...

IF₀ = 12

STEP 3: Convert Result to Output's Unit

1036800 Second -->12 Day (Check conversion here)

FINAL ANSWER

12 Day <-- Independent Float

(Calculation completed in 00.004 seconds)

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Created by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

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Coorg Institute of Technology (CIT), Coorg

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< 10+ Critical Path Method Calculators

Earliest Finish Time

Go Earliest Finish Time = Latest Finish Time-Total Float

Total Float in CPM

Go Total Float = Latest Finish Time-Earliest Finish Time

Latest Finish Time

Go Latest Finish Time = Total Float+Earliest Finish Time

Slack of Event given Independent Float

Go Slack of an Event = Free Float-Independent Float

Free Float given Indenpendent Float

Go Free Float = Independent Float+Slack of an Event

Independent Float used in CPM

Go Independent Float = Free Float-Slack of an Event

Total Float given Free Float

Go Total Float = Free Float+Slack of an Event

Free Float used in CPM

Go Free Float = Total Float-Slack of an Event

Slack of Event in CPM

Go Slack of an Event = Total Float-Free Float

Interfering Float

Go Interfering Float = Total Float-Free Float

Independent Float used in CPM Formula

Independent Float = Free Float-Slack of an Event
IF₀ = FF₀-S

What is Independent Float?

Independent Float is defined as the amount of time an activity's start time can be delayed without affecting the earliest start time of any successors. So independent float is the delay in any project tasks that have no bearing on the early finish date of the project.

What is Tail Event Slack?

The Tail Event Slack of an activity in a network is the slack at the tail (or starting point) of an activity. In other words, tail event slack of an activity in a network is the difference between the latest event time and the earliest event time at its tail (or starting point or node).

How to Calculate Independent Float used in CPM?

Independent Float used in CPM calculator uses Independent Float = Free Float-Slack of an Event to calculate the Independent Float, The Independent Float used in CPM formula is defined as the excess time available as the preceding activity ends as late as possible and the succeeding activity starts as early as possible. Here slack is tail event slack. Independent Float is denoted by IF₀ symbol.

How to calculate Independent Float used in CPM using this online calculator? To use this online calculator for Independent Float used in CPM, enter Free Float (FF₀) & Slack of an Event (S) and hit the calculate button. Here is how the Independent Float used in CPM calculation can be explained with given input values -> 0.000139 = 1555200-518400.

FAQ

What is Independent Float used in CPM?

The Independent Float used in CPM formula is defined as the excess time available as the preceding activity ends as late as possible and the succeeding activity starts as early as possible. Here slack is tail event slack and is represented as IF₀ = FF₀-S or Independent Float = Free Float-Slack of an Event. Free Float is the period by which an activity can shift in its timing without affecting the early start of any succeeding activity or event & Slack of an Event in a network is the difference between the latest event time and the earliest event time at its terminal point or node.

How to calculate Independent Float used in CPM?

The Independent Float used in CPM formula is defined as the excess time available as the preceding activity ends as late as possible and the succeeding activity starts as early as possible. Here slack is tail event slack is calculated using Independent Float = Free Float-Slack of an Event. To calculate Independent Float used in CPM, you need Free Float (FF₀) & Slack of an Event (S). With our tool, you need to enter the respective value for Free Float & Slack of an Event and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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