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(2) It's also good to get feedback when a solution is found, return to the original post to explain how it was resolved so that more people can also use the results.
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In the past, I've done an efficiency analysis...
You need to calculate how fast they should have done this based on the initial thickness, then compare it to the current thickness (in Excel)
Get them to agree on that, once you've done that you can allow for that and accurately.
I use this method en-mass and it works for me
I understood that the activity has not started yet and the analysis shall be easy, in this case it would be an increase in activity duration, the most easy to analyze.
Not all delays occur in between the activities, it is not uncommon for a delay to happen on activities while in progress especially if long duration activities typical of linear projects. This is the first time I heard that a delay analysis on an activity in progress is not feasible.
It if has started but not finished the analysis is not as simple as a change in duration where no fragnet is needed. Whatever has been plastered already might need some re-work and a fragnet of several activities might be needed. By using project records it shall not be difficult to reconstruct the details needed for the analysis.
Hi Nicos
And where precisely along the task duration would you link your Fragnet?
You would be guessing and that will not work.
Best regards
Mike T.
Dear Dean,
Depending on when the Variation Order was issued I would impact this event as follows:
If the Variation Order whas issued before the commencement of the plastering activity I would increase the activity duartion by a reasonable % to allow for the additional effort required.
If the variation was issued after plastering was completed I would create a fragnet with all relevant activities such as Issue of Instruction, procurment of material, removal of existing layer, plastering 1st Coat, 2nd Coat, Final Coat Plaster ect. and I would linke the last of these activities with the successor of the original "Blockwork and Plastering" Activity.
Best Regards,
Nicos.
Dean,
I understand that when there is a change in scope the old activity and schedule is no longer valid and a new schedule with either the same number of activities, less or more shall not be rejected if it is reasonable and represents true revised plans.
It looks like Mike do not believe in time location schedules, the activities are performed in multiple (quite a lot of locations) that it makes sense to somehow show the multiple locations in which a single activity is scheduled to happen. Imagine 1,000 activities each to represent 1 meter segment for each kilometer of pipe installation. Or in this case an activity for every coat on every wall on every room.
To keep computer assisted resource leveling of different crews working on the same activity splitting the work on separate activities will allow the software the different teams to work at different times when they should be working together. Therefore the requirement to always keep them apart makes no sense.
Mike does not believe in computer resource leveling and in such case he must track and manually level all these activities while making sure there are no resource overloads.
Best Regards,
Rafael
Hi Dimple.
Rafael is right - you have to re-construct your Level 3 task - and the engineer may not accept it.
That is why planners should NEVER use multiple trade / multiple location tasks in a programme.
What if the change had been for a few rooms only - kitchens and bathrooms - you would have been completely stuffed.
Best regards
Mike Testro
good work
This change represents changed conditions prior to impact.
Create a schedule update to variation order date as to represent conditions prior to changed conditions.
To model changed conditions you eliminate old activity with a duration of 30 days and substitute it with a new activity(es) and increased activity duration, suggest rename it as Revised block works and internal plaster, with a new cost and new duration.
Increase in internal plaster thickness might imply an additional coat is needed. The impact in activity cost is clear but the impact on activity duration and on project duration is not necesarily clear. You might need an expanded network as to justify the increase in activity duration you are to plug in.
Blocks XXXXXXXXXXXXXXXXX
Scratch Coat XXXXXXXXXXXXXXXXX
Finish Coat XXXXXXXXXXXXXXXXX
For revised activity
Blocks XXXXXXXXXXXXXXXXX
Scratch Coat XXXXXXXXXXXXXXXXX
Additional Coat XXXXXXXXXXXXXXXXX
Finish Coat XXXXXXXXXXXXXXXXX
Deppending on impact you might need additional activities to account for extra mobilization time, but in this case it looks like only original activity duration increases.
If the change causes an increase in total project duration you are entitled to additional activity cost, extended overhead and EOT. In there is no change in duration then you are entitled only to additional activity cost.
Good luck.
Email: PPadmin@planningplanet.com
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