It appears that you are describing a rolling windows analysis which is acceptable for work in progress if you are reporting to the US Corps of Engineers.
It does not work in forensic analysis.
Mike Testro
Member for
13 years 8 months
Member for13 years9 months
Submitted by thefloriantrout on Mon, 2013-03-11 19:48
the latest approved schedule just before the impact is the one that should be used.
you could also have the contractor update the schedule to the point right before the impact if you want, but the update should be carefully examined, then approved.
the contractor should have used the latest approved as-built,
using the as-planned in most cases is not on the contractor side because the acivities total float in the as-planned is still intact and not consumed accordingly the resultant EOT will be less than that if he used the latest As-built schedule.
My apologies, my computer and/or website was too slow to response, I might have pushed save button several times resulting in recording of same message repeadtedly. Once again sorry for inconvenience.
Thanks so much for providing a clear and consize response.
Elaborating my case further after looking at your response, the latest schedule update contains progress data as well as the changes in the logic and some of the durations etc. However, no rigging of result is being suspected at this point.
1) Will it be okay to ask Contractor to use the latest schedule update to show the impact as this contains our new plan?
2) Or, as I saw in one of the related threads that one could use the orginal baseline, apply impact and compare the impacted activities with the porgressed schedule. In this case (as I understood it) if the impacted activity (of the impacted baseline) overlaps or goes beyond the same activity's date/s in the progressed schedule, then it would indicate that the schedule has in fact been impacted by a given event, if not then it would mean that something else has caused the delay.
Usually the last approved programme is used to impact delays - provided that the changes were not made solely to rig the results of the impact and no progress has been added.
Whatever baseline is used the Contractor must also compare the impacted tasks with actual progress on site.
Member for
19 years 10 monthsHi C Andre It appears that
Hi C Andre
It appears that you are describing a rolling windows analysis which is acceptable for work in progress if you are reporting to the US Corps of Engineers.
It does not work in forensic analysis.
Mike Testro
Member for
13 years 8 monthsthe latest approved schedule
the latest approved schedule just before the impact is the one that should be used.
you could also have the contractor update the schedule to the point right before the impact if you want, but the update should be carefully examined, then approved.
Member for
19 years 10 monthsHi Mahmooud That is one of
Hi Mahmooud
That is one of the reasons why you should never use a progressed programme as a baseline.
Why should a contractor take unfair advantage from his own delays.
Best regards
Mike Testrp
Member for
13 years 9 monthsHi Meraj,the contractor
Hi Meraj,
the contractor should have used the latest approved as-built,
using the as-planned in most cases is not on the contractor side because the acivities total float in the as-planned is still intact and not consumed accordingly the resultant EOT will be less than that if he used the latest As-built schedule.
Member for
14 years 10 monthsThanks once again Mike.Best
Thanks once again Mike.
Best Regards
Meraj Zia
Member for
19 years 10 monthsHi Meraj The latest APPROVED
Hi Meraj
The latest APPROVED programme should be used to impact delays provided you have an original version with no progress on it.
If the event impact is downstream of the progressed tasks then no further adjustment is needed.
If however the event impacts in the progressed section then all progress should be removed and the data date set earlier than the the start date.
I have removed your duplicate threads.
Best regards
Mike Testro
Member for
14 years 10 monthsMy apologies, my computer
My apologies, my computer and/or website was too slow to response, I might have pushed save button several times resulting in recording of same message repeadtedly. Once again sorry for inconvenience.
Best Regards
Meraj Zia
Member for
14 years 10 monthsHi Mike,Thanks so much for
Hi Mike,
Thanks so much for providing a clear and consize response.
Elaborating my case further after looking at your response, the latest schedule update contains progress data as well as the changes in the logic and some of the durations etc. However, no rigging of result is being suspected at this point.
1) Will it be okay to ask Contractor to use the latest schedule update to show the impact as this contains our new plan?
2) Or, as I saw in one of the related threads that one could use the orginal baseline, apply impact and compare the impacted activities with the porgressed schedule. In this case (as I understood it) if the impacted activity (of the impacted baseline) overlaps or goes beyond the same activity's date/s in the progressed schedule, then it would indicate that the schedule has in fact been impacted by a given event, if not then it would mean that something else has caused the delay.
Once again I will appreciate your response.
Best Regards
Meraj Zia
Member for
19 years 10 monthsHi Meraj Usually the last
Hi Meraj
Usually the last approved programme is used to impact delays - provided that the changes were not made solely to rig the results of the impact and no progress has been added.
Whatever baseline is used the Contractor must also compare the impacted tasks with actual progress on site.
Best regards
Mike Testro