Earned Value, BCWP in P3

Dear Mike,



(First of all apologize my unproffesional way of explaining..I have studied planning by experience).



I have a question has an indirect relation to your answer which is:what are the precautions that should be taken while Updating the Schedule?



In my mind some unclear points we should be woried about, while updating the schedule:



1-do we have to update End-ST to be and should equal to the anticpated duration(as I understand from your answer that once the duration of the activity becomes more than what is planned so we should request an official change for this period.



2-what about T.F,,I mean even if the duration becomes more than the targeted duration and we still have a +T.F,so do we need to have a variation order to the contract if we found that the OD becomes less than the (Actual End-Act Start).



3-shall we care about out of sequence activities which mean that if we start activity B before the End of Activity A(and B was supposed to start after the End of A).i.e shall we request a change of relation from the consultant to suit the new sequence.



4-some of the activities I have met such as mechanical work has a duration say 30 days (for example fire fighting work) and it stay more than 3 months) and still has a +T.F, because it happens that the subcontractor can’t work continously in one floor may be because of a lack of material or any other obstractions(and I am not using the option of suspend and resume in primavera, do I have to use this option)



in final words what are the effects of Updating on the % progress of the project then on any other related subjects (such as BCWP)?



thanks

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Unless there has been a variation to the contract it is unwise to change the duration to suit the situation.



When the contractor tendered the works he was aware of how long the operation should take and on that basis was awarded the works.



Unless underground obstructions have been encountered progress should be calculated as a % or remaining duration as long as the RD is not in excess of the OD.



The actual duration of the operation then becomes the topic of debate.



Hope this helps



Mike Harvey

Garath



You will find an article on my web site at www.eh.com.au on Earned Value Performance Measurement that may be of assistance.



Regards



Paul E Harris