Question

How do we calculate total time and free float time?
In critical path analysis.

Answer 1

easy. Will only explain when you're online @Karla

Answer 2

I'm online right now
Are you?

Answer 3

@Hero

Answer 4

Sorry I missed you @Karla

Answer 5

Now?

Answer 6

Oh there you are. Is it possible for you to upload the question you're working on. Can you screenshot it from your textbook and upload it here?

Answer 7

There is no option to upload the picture

Answer 8

Oh but there is. It's called "Attach File". It is a set of buttons right below the typing box.

Answer 9

I'm using mobile

Answer 10

Oh. Well use a website like postimage.org to upload it.

Answer 11

Then post the link here. That's what 99% of users usually do.

Answer 12

Keep in mind I have a limited amount of time.

Answer 13

Oh
I've uploaded

Answer 14

You have to post the link to the image here. I'm sorry you've never done this before. i don't know how to show you how to do this correctly.

Answer 15

Yea I haven't

Answer 16

c'mon Karla. You can figure this out. It's not a difficult site to use.

Answer 17

I figured that out 😃

Answer 18

nah you posted the wrong link.

Answer 19

Oh

Answer 20

You posted a link to the gallery not the link to the image.

Answer 21

Oh I did that

Answer 22

It's part 4
Calculate all free float and total floats

Answer 23

Trust me, you still have not done it right. The link you posted is still the incorrect link even though QC processed it as an image. Whatever you posted kicked me off QC and I had to sign in again. Nevertheless, I have the image now.

Answer 24

Oh I can see the picture without link here

Answer 25

Yes Karla, as I said "QC processed it as an image". But trust me, you still have not posted the correct link. I don't know why you haven't figured it out yet, but it doesn't matter I have the image. Anyway what I want to say is that your book is using terminology I have never heard of before.

Answer 26

It's non-traditional terminology. What is the name of this textbook?

Answer 27

Peter stimpson and Alastair farquharson
Cambridge international As and A level
Business
Coursebook third edition

Answer 28

That explains it. It's international. I'll never be able to find it now.

Answer 29

Oh

Answer 30

It's okay, I'll try to do some research on these terms.

Answer 31

Oh okay thank you!

Answer 32

What terms I can tell you them

Answer 33

I'm starting to figure it out. Hang on.

Answer 34

Ok

Answer 35

Let me ask, have you already created your network diagram?

Answer 36

@Karla are you still here?

Answer 37

Yea

Answer 38

Okay, just checking.

Answer 39

I tried to make one but I'm not sure that is correct

Answer 40

Okay, how much time to do you have to work on this question. I have to start getting ready for work.

Answer 41

5 min maybe
What is the time in your country

Answer 42

You can tell me the time when you are free
I'll get online

Answer 43

It is 8.44 pm here

Answer 44

Okay. Basically, I won't be back for a couple hours. I should be back by 11:30 pm your time.

Answer 45

And hopefully I'll have solved everything by then

Answer 46

Alright
Thank you!
I'll get online

Answer 47

Then I can explain it

Answer 48

Ok

Answer 49

See you in a couple hours

Answer 50

Okay

Answer 51

So if I ping you @Karla will you get an alert?

Answer 52

No when I'll get online then I can see that

Answer 53

Only

Answer 54

You should either set up a gmail on QC then set it up to receive alerts.

Answer 55

Oh
I dont use gmail to often

Answer 56

too*

Answer 57

whatever email you use, you should add it to QC

Answer 58

Ok

Answer 59

Your email service should have a way for you to set up alerts

Answer 60

Anyway, I have to go

Answer 61

Okay
Bye

Answer 62

Hey!

Answer 63

I'm back

Answer 64

https://i.postimg.cc/GmV0fWvz/20181120-211340.jpg

Answer 65

I am unable to make draw last part

Answer 66

Hi

Answer 67

I'm back as well. Let me put together a solution for this

Answer 68

Hi!
Ok

Answer 69

You there?

Answer 70

Yes sorry. I'm done

Answer 71

I haven't done this in like 8 years so I had to re-familiarize myself

Answer 72

Oh

Answer 73

But I have the solution

Answer 74

Great!

Answer 75

Let me know if you have any questions

Answer 76

F must be completed before I commence

Answer 77

So as F has no preceding activity shouldn't it be connected with first node

Answer 78

Yes that is correct. It isn't connected to anything except I

Answer 79

Do you see that this is the case?

Answer 80

But If i remember that correctly when anything has no preceding activity it is connected with first mode?

Answer 81

I only grouped it beneath A since both A and I have no preceding activity

Answer 82

Node*

Answer 83

But they are NOT connected

Answer 84

Do you understand that F is only connected to I?

Answer 85

Yea

Answer 86

Okay great

Answer 87

Ok

Answer 88

Is that really the only question you have?

Answer 89

Yea
But I've another question in which I only need to calculate free float and total float
So after this I'll do that myself

Answer 90

Well, I think that now that you have the correct answer you should be able to calculate those things.

Answer 91

I can help if necessary

Answer 92

Oh
Total float is LFT-duration-EST
And
FREE FLOAT= EST(next activity)-duration -EST (this activity)
I dont get that what LFT or EST will we take?
I mean of A,B,C,D...?

Answer 93

And what does LFT and EST stand for. Your nation deals with completely different terminology so you can't use any acronyms with me.

Answer 94

oh sorry
EST=earliest start time
LFT=latest finish time

Answer 95

Yeah I don't get your notation either.

Answer 96

are those dashes supposed to be subtraction symbols?

Answer 97

Yep

Answer 98

rewrite the formulas and put MINUS instead of dash

Answer 99

Okay

Answer 100

You can use acronyms now that I know what they mean

Answer 101

Total float is Latest Finish Time(minus) duration( minus) earliest start time
And
FREE FLOAT= Earliest start time(next activity) (minus) duration (minus) earliest start time(this activity)

Answer 102

Oh

Answer 103

Okay

Answer 104

Hmmm interesting.

Answer 105

they want this for each node (A, B, C, D)?

Answer 106

or for the entire project time

Answer 107

@Karla

Answer 108

Do they want these calculations for each node?

Answer 109

Oh each node okay
Then I'll do that

Answer 110

No, I'm asking if that's what they want

Answer 111

I don't know if that's what they want.

Answer 112

Oh now I reread the question it says all free float

Answer 113

Thank you so much!

Answer 114

I'm lost lol

Answer 115

But it says to calculate these values only for the non-critical nodes

Answer 116

Oh yea
So I'll find the non critical path and put the values in formula

Answer 117

Right?

Answer 118

Correct

Answer 119

But actually you don't have to find a non-critical path

Answer 120

Why?

Answer 121

Just find the non-critical nodes

Answer 122

Oh yea 👌

Answer 123

Ok

Answer 124

Thank you so much!

Answer 125

Looks like the non-critical nodes are CDF and H

Answer 126

How do you intend to calculate the Free and Total Float for node C for example?

Answer 127

Show me your work for that

Answer 128

Ok 1 min

Answer 129

So total float is 4-2-4
Right?

Answer 130

Where are you getting those numbers from?

Answer 131

From your diagram

Answer 132

I don't see 4 listed twice for node C

Answer 133

Also, if you're getting them from my diagram, how do you know how to interpret those numbers?

Answer 134

But what we make have 2 earliest start time and latest finish time

Answer 135

But when we make we have 2 numbers *

Answer 136

I never used any such numbers to represent "early start time" and "latest finish time"

Answer 137

Oh so what u do?

Answer 138

I only used two sets of numbers. Duration of Time To Complete a Particular Node By Itself and Total Project Time It Takes To Complete Node X Starting from Node A

Answer 139

Something like that

Answer 140

Oh

Answer 141

X represents any node other than node A

Answer 142

and F

Answer 143

Oh we do like I send you the pic

Answer 144

That is different way

Answer 145

Yeah, I calculated it correctly.

Answer 146

I know you do it differently but the answer is still correct

Answer 147

Oh

Answer 148

Ok

Answer 149

Some of the calculations are unnecessary from my point of view.

Answer 150

Ok

Answer 151

But let me help you out

Answer 152

Ok

Answer 153

C and D each have two extra days of float time since it will take B 6 days to complete
F has 6 days of float time
H has only 1 day of float time

2 + 2 + 6 + 1 = 11 total float time

Answer 154

11 total float days*

Answer 155

Does that make any sense to you at all?

Answer 156

You got H as 1
As G=12
And H=11
So difference

Answer 157

Yes, I think you are interpreting correctly the way I am calculating Free Float and Total Float

Answer 158

Oh alright

Answer 159

Free Float
C = 2 days of free float
D = 2 days of free float
F = 6 days of free float
H = 1 day of free float

Total Float
2 + 2 + 6 + 1 = 11 days total float

Answer 160

Alright

Answer 161

If I have to do it the teacher way, I usually run

Answer 162

I rather do it the easy way

Answer 163

Yea that was really easy way

Answer 164

Thank you so much!!

Answer 165

But it is important to manage the time properly because it is easy for the manager to think "Oh we have 11 days to play around with". That's plenty of time. Then if the employees think they have 11 days of float time, they won't do anything for 11 days and the project will surely fail. So don't tell the employees and monitor the time very closely.

Answer 166

I think that actually answers one of the questions as well.

Answer 167

Maybe you can think of a more technical way of explaining why the time must be monitored closely.

Answer 168

Oh, you already did #3, nevermind

Answer 169

No I didn't lol
But I've to write advantages of critical path analysis so that are written in book

Answer 170

And disadvantages

Answer 171

With some additional detail

Answer 172

If any delays occur, then you can push back the start time for the non-critical projects and delicate manpower towards ensuring the critical projects are completed on time.

Answer 173

Also, post the feedback from your instructor regarding this particular question.

Answer 174

Okay

Answer 175

Thanks!

Answer 176

You bet

Answer 177

Yea