Hi guys,
I have created two programs in p6. Both showing activities over a certain period of time. One is showing critical activities which if can't be done during the allocated time, must be done during an allocated possesion with no allowance for risk. The other program shows all activities, due to be complete on time.
My issue is how do I merge both programs to show the minimum time needed, maximum time needed and most likely duration for both programs.
Would appreciate any help on this.
Nifemi;
I don't understand your situation - critical schedule and normal schedule to be merged.
Absent analysis, I propose you modify the durations by a percentage. PRA defaults to +/-25%, which may or may not be applicable. Assuming the current durations came from a credible estimate, those durations are your most likely. The optimistic is the likely times -%, I'd go with 10%. So your optimistic would be .9 likely. Similarly for the pessimistic. I'd suggest 25%, so it would be 1.25 likely. Then use the deterministic (calculated) dates for each of the three runs.
This is not the way it should be done. This method does not allow for variability (stochasitic variability) within the range. My caution is not to do this. You won't get the 'answer' you seek. Your program appears to violate sound project control methodologies. Please re-think.
The minimum time would be using the early dates
The maximum time would be using the late dates
for the minimum durations you can make them equal to the schedule which is being done on time
for the maximum duration you can use the schedule where it is not being done on time
for the most likely durations you can use the value between the max and the min durations