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Problem with Total Float in P6

8 replies [Last post]
Labeeqh Ahmed
User offline. Last seen 9 years 33 weeks ago. Offline
Joined: 6 Aug 2009
Posts: 7

Hi,

I am currently working on a Infra Project were i wont be using the resources or levelling part,whereas i have to manage with the sheduling part i had already made the shedule now revising it again but have to maintain the total float as zero ,can any one help me on it.

Thanks in advance

Replies

Gary Whitehead
User offline. Last seen 5 years 25 weeks ago. Offline

Project duration float will be zero if you remove all constraints

Labeeqh Ahmed
User offline. Last seen 9 years 33 weeks ago. Offline
Joined: 6 Aug 2009
Posts: 7

Hi,

The each activity has different float,i am talking about the project duration float which must be zero

Jay Stadler
User offline. Last seen 13 years 14 weeks ago. Offline
Joined: 8 Aug 2011
Posts: 5
Groups: None

Just remove all constriants.

You wil have 0 float and your forecast woul be your earlydate (Including project must finish) 

Peter Ayre
User offline. Last seen 3 years 41 weeks ago. Offline
Joined: 17 Jun 2003
Posts: 26
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Are you saying that your critical path activities do not have zero total Float, or are you trying to make every activity have zero total float?

I think Mike might have been jesting when he said "Why not just take out all the links and set each task to Must Start On."

Labeeqh Ahmed
User offline. Last seen 9 years 33 weeks ago. Offline
Joined: 6 Aug 2009
Posts: 7

Hi,

What i have done is i have given must start dates and revised the project and i have applied the actuals and also updated the project as per the status , but could not able to make the total float as ZERO when i gave it for review to my Reporting head he is admant on me making the total float ZERO and wants it but i am not able to make

Will there be any problem if i have a negative Total Float or Positive one &  what difference does it make in the program because we are only using the sheduling part.And how can i come out of this Float part.

Please help me out

 

Best Regards

Labeeqh Ahmed
User offline. Last seen 9 years 33 weeks ago. Offline
Joined: 6 Aug 2009
Posts: 7

Thank You friends for the valuable feedback will surely work on those lines and check my program

Mike Testro
User offline. Last seen 36 weeks 12 hours ago. Offline
Joined: 14 Dec 2005
Posts: 4418

Hi Labeeqh

The only way you can set up a genuine zero total float programme is to have only one cascade usiing only FS links.

In most construction programmes this would be pointless.

Why not just take out all the links and set each task to Must Start On.

If you try to make the adjustments described by Jash (which would work) your programme will be worthless for time control management.

Even worse it will be blatantly obvious that you have fiddled the programme.

Float is a valid part of a properly prepared programme and should arise naturally from the logic - don't try to hide it.

Best regards

Mike Testro

Jash Sales
User offline. Last seen 12 years 43 weeks ago. Offline
Joined: 8 Dec 2009
Posts: 27
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Hi Labeeqh,

If you really want to maintain your schedule with zero total float, use a series-connection of activities with FS relationship only. Another way is that if you have different sequence/link of activities with morethan 0 TF, then assigned a lag to activities equal to its total float to make it critical.

Cheers,