## Webinar Critical Path : Q5

Discuss PMP doubts, tips and lesson learned. iZenBridge makes PMP® Certification easy
namita
Super Member
Posts: 502
Joined: Wed Dec 11, 2013 10:25 am

### Webinar Critical Path : Q5

Calculate the following for this N/W Diagram :
Float of each activity
Critical Path
Attachments
Q5.png (30.6 KiB) Viewed 2745 times
Pashi
Beginner
Posts: 40
Joined: Tue Dec 24, 2013 12:48 am

### Re: Webinar Critical Path : Q5

i) - Critical Path - ACDF

4 possible Paths -
ACDF = 27
ABDF = 22
ACDE = 24
ABDE = 19

Since ACDF = 27, is the longest path, hence the CRITICAL PATH.

ii) Float on each Activity-
Critical path = ACDF and float on all activities on Critical path = 0, so -
Float on A = 0, Float on C = 0, Float on D = 0, Float on F = 0.

Now, Subtract the Second Longest path in the N/W Diagram from the Critical Path, this will give the float on each activity on second longest path.
i.e. ACDF - ACDE => 27-24 = 3 (Float on all activities on the second longest path EXCLUDING the CRITICAL PATH activities on this path (if any)).
Since A, C and D are on CP so float on them is 0. Remaining activity is E, hence float on E=3.

Repeating above on Third Longest Path in the N/W Diagram from the Critical Path.

ACDF - ABDF = 27-22 = 5.

Since A, C and D are on CP so float on them is 0, Remaining Activity is B, hence Float on B=5..

Alternate Solution is to find out the Es, Ef, Ls, Lf on all activities and calculate the float. But if the question is limited to identify Float only, I would stick to this method as it saves me some time.
Attachments
Solution
compressed.jpg (22.28 KiB) Viewed 2737 times
namita
Super Member
Posts: 502
Joined: Wed Dec 11, 2013 10:25 am

### Re: Webinar Critical Path : Q5

Right approach... same will be discussed in webinar. Also if n/w diagram is not very complex...forward path and backward path method is recommended