Total Float and Float in Network Diagram

Submitted by jjrr007 on Mon, 12/01/2008 - 00:06

I wanted to please ask how can I calculate total float when given a portion of a network diagram. 

For a particular example, please feel refer to question 18, in the Oliver Lehmann practice test at:

http://www.oliverlehmann.com/pmp-self-test/75-free-questions.htm

Thanks!

 

 

 

 

 

 

Forums: 
PMP / CAPM exam Question bank
  • Log in to post comments
  • 32111 reads

msachin

Tue, 12/30/2008 - 19:13

Eliminating the wrong choices.

Adil

Mon, 01/05/2009 - 12:06

Float =LS-ES=LF-EF
in the example of question 18:
ES=day 16 EF=Day 21 (forward)
LS=day 26, LF=day 31 (backward)
so the float of activity B is 10.
the question is: is-it total float or free float?
I think it's important to look at the question: start dates are early morning and finish dates are evening this important information involves that 10 is total float, because if the free float is 10: if activity B is delayed 10 days it will finish on day 31 evening; early start of activity C will be delayed! which is oposit to the definition of free float.
I hope I'm correct please see the definition of free float.

happyinlove505

Wed, 02/20/2013 - 12:13

 I think that your explanation is correct and thank you for that :)

Initially, I did not notice this point about early mornings and selected free float. Now I see what was wrong :)

vkajith

Wed, 12/31/2008 - 10:51

I have an inkling that 2 answers are coreect.

The activity B has a free float as well as total float of 10 days. 

Even though a portion of the network diagram is only shown there,  we can safely assume about the total float because the subsequent activity falls on the critical path.

 

Please correct me if I am wrong

 

Best Regards
Ajith

happyinlove505

Wed, 02/20/2013 - 12:41

 I think you are wrong in saying that subsequent activity falls onto a critical path.

Look attentively, subsequent activity has a float of 1 which means it is not on critical path.

umanath

Fri, 02/20/2009 - 04:46

I think that both A and B are correct in this OliverLehmann's example because:

Free Float = LS - ES or LF - EF = 10d

Total Float = LF - ES - D( duration of activity) = 10d

- Umanath

HN-LB

Mon, 03/02/2009 - 10:34

Hi All,

 I have question for you:

If you have two resources, one working on an activity & having free float of 4 & another one working on another activity and having total float of 8, which resource you use to crash a critical path activity?

 Awaiting your kind answers,

 Regards,

NH

deepfriedbrain

Fri, 11/13/2009 - 17:13

You can review the following article for a simple explanation of this topic:

Total Float vs Free Float