FF and SS Links

I am unable to replicate your observations.

Could you please email me simple schedules one with the before and one with the after result of each problem, harrispe@eh.com.au.

Paul E Harris
Eastwood Harris Pty Ltd, Melbourne, Australia
Planning and Scheduling Training Manual & Book Publishers & Consulting
www.eh.com.au

When 2 activities are linked Start to Start and the successor starts before the predecessor (out of logic), under the logic override mode, the link is broken and the predecessor becomes open ended, but I don´t see a reason for this to happen when it is the predecessor which starts first.

Ernesto,
Where can you find "logic override mode" in MS Project?
This is a P3 feature, isnt’it.
If the successor starts before the predecessor in such an example, either the successor actual duration reaches the status date and the task bar is not splitted, or the successor actual duration does not reach the status date and the bar is splitted between the task actual date and the project status date.
I hope that you will understand what I mean; if not, just give me your email and I will forward my 2 task project to you.
All the best,
Alexandre

You can make MSP simulate Retained Logic and Progress Override by turning on or off “Split in Progress”.

With “Split in Progress” is checked you will get Retained Logic, except when the % complete of the successor is 0% then you get Progress Override.

With “Split in Progress” unchecked you will get Retained Logic.

Paul E Harris
Eastwood Harris Pty Ltd, Melbourne, Australia
Planning and Scheduling Training Manual & Book Publishers & Consulting
www.eh.com.au

Thank you Paul,
I did not know that; I have been using "Split in progress" since the beginning, but I was not aware of the relationship with "Retained logic".
Have a good week-end.
Alexandre

There are a few odd things in way MSP calculates.

Try turning on and off the “Update task status updates resources status” and entering a % Complete against a summary task and see the differences in the way it calculates the % Completes against the child tasks!

Paul E Harris
Eastwood Harris Pty Ltd, Melbourne, Australia
Planning and Scheduling Training Manual & Book Publishers & Consulting
www.eh.com.au

Paul,
I know this issue; on a training session, I always tell my trainees to concnetrate on child tasks and let summaries alone, on this topic.
All the best and have a good week; here in France it’s Sunday morning,
Alexandre

Dear Mr. leelanatra
answer for the question (b. Start to Start Link: When an activity has got only a "successive Start to Start Link", as soon as "Actual start" (or % complete) is entered it becomes an open end activity. (Total float calculates up to the project end date)
If you double clik on first activity and reach task information on the 4th tab (advanced tab) there is constraint type chose must finish on and select finishing date of activity in constraint date part so you can adjust the float or you can make it critical activity

Dear Easin,

Thanks a lot for your advice on my Question b. The problem is that I have a quite a lot of activities with “Successive SS links”. It’s said that “Constraints must be used only where it is unavoidable/ required”. Therefore, I’m afraid to use too many constraints in my project.

To All PP Members,

Thanks to Paul Harris, my Question a (FF links with 2 different calendars) has been now resolved. It was more to do with MSP2002 Standard which I was using. After upgrading to MSP 2003 Standard and pressing F9 (recalculation), I got the correct float calculations.


Regards
Viraja Leelaratna