## Network Diagram- Critical PATH

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nawaz23@yahoo.com
Posts: 6
Joined: Fri Sep 02, 2016 3:53 pm

### Network Diagram- Critical PATH

Hi All,

Can any one explain the answer for this question.

You and your project management team are conducting the activity sequencing for a new project. The team has determined that
Task A takes 3 days. Task B depends on Task A finishing and has a duration of 1 day. Task C takes 4 days. Task D depends on
Task C starting and has a duration of 7 days. Task E depends on both Task C and Task D finishing and has a duration of 2 days.
Task F depends on both Task E and Task B finishing and has a duration of 4 days.
What is the duration of the project?

1. 8 days
2. 17 days
3. 10 days
4. 13 days

I chose option-2 but not sure.

Thanks

Nawaz
ankurjig
Contributor
Posts: 195
Joined: Mon Mar 07, 2016 5:46 am

### Re: Network Diagram- Critical PATH

Best would be to draw the project schedule network diagram on a paper with your solution and post here.

While solving keep in mind that task D starts when task C starts (i.e. SS relationship). Rest of the tasks have FS relationship. Hope this helps.

Ankur
nawaz23@yahoo.com
Posts: 6
Joined: Fri Sep 02, 2016 3:53 pm

### Re: Network Diagram- Critical PATH

Thanks Ankur. The result is now different after i sketched network diagram on paper.

D+E+F= 13 DAYS

SEE THE ATTACH NETWORK DIAGRAM and please advise me accordingly.

thanks

Nawaz
Attachments
IMG_0784.JPG (190.75 KiB) Viewed 2105 times
ankurjig
Contributor
Posts: 195
Joined: Mon Mar 07, 2016 5:46 am

### Re: Network Diagram- Critical PATH

Yes, your solution looks correct.

Ankur
nawaz23@yahoo.com
Posts: 6
Joined: Fri Sep 02, 2016 3:53 pm

### Re: Network Diagram- Critical PATH

Nawaz
Housam Bassal
Contributor
Posts: 239
Joined: Fri Nov 04, 2016 7:38 pm

### Re: Network Diagram- Critical PATH

I Think we cannot calculate critical path directly by summing the duration of the activities when we have logical relation like the one between C, D (SS)
To calculate the project duration which is the critical path, you need to calculate the ES of all activities.

The correct answer is D (13 Days)
Housam Bassal
Housam Bassal
Contributor
Posts: 239
Joined: Fri Nov 04, 2016 7:38 pm

### Re: Network Diagram- Critical PATH

and here is the SND
Attachments
Network Diagram- Solution
Network Diagram- Critical PATH.gif (152.32 KiB) Viewed 1671 times
Housam Bassal
manishpn
Expert
Posts: 2451
Joined: Sat Jan 04, 2014 3:55 pm

### Re: Network Diagram- Critical PATH

so your concept are clear now? thats good
Br,
Manish P
PMP, PMI - ACP, SAFe Agilist
http://www.izenbridge.com/blog/7-effect ... ification/

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