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How can we make the free float zero ???

3 replies [Last post]
Mon, 2007-02-12 23:07
Pranab Kumar Deb
User offline. Last seen 2 years 46 weeks ago. Offline
Joined: 23 Jan 2007
Posts: 291
Groups: Civil Engineering
Dear Sirs ,
In a schedule i want to have the free float = 0 , how can i acheive this , let me explain a bit in my schedule i have separated the Procurement of Items in a separte WBS level now i want these items to just stick to the succeding activity for which this items are required , please advice how this can be achieved as now we are preparing a Schedule to complete,and so i expect that the procurement schedule will be overcrowded for the next 2-3 months i want to avoid this .
Hope i made my question clear
regards
deb
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Replies

Thu, 2007-02-15 07:33
#1
Eva Martin
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Joined: 15 Feb 2007
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It depends on how you would use it.

You have to be careful and limit the use of constraints in your programme as this can influence the real computation of free and total floats (critical path).

Putting zero float is (albeit free float is better than total float) compels an activity to be planned as late as possible. So everytime programme is time analysed this activity always on the critical path which should not be the case.

Assigning early constraint date is less poison because the constraint effect vanished once the data date overuns it.

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Tue, 2007-02-13 02:54
#2
Pranab Kumar Deb
User offline. Last seen 2 years 46 weeks ago. Offline
Joined: 23 Jan 2007
Posts: 291
Groups: Civil Engineering
Dear Mr. Brennan ,
Thanks for the advice it works perfectly well also i have added some lag as advised by you.
thanks again
regards
deb
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Tue, 2007-02-13 01:20
#3
Brennan Westworth
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you could apply a "zero free float" constraint

If you are going to do this, it would be good practice to include some consealed float (lag) in the relationship between procurement and construction activities.
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