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4D - Visualising Progress - Activities behind Late Start/ Finish

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Gerard Naughton
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Joined: 22 Oct 2013
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Hello everyone,

I come from a background in architecture, but have now found myself working with a contractor - where I have been tasked with developing ways of visualising progress using BIM/Navisworks.

I am starting off with some very basic visual reports, which will hopefully become more sophisticated.I came across an 'Autodesk University' presentation by Swinerton, where they showed an interesting image, where model elements behind their 'Late Start', and 'Late Finish' dates were highlighted (below):

1931
progress.jpg

 

I understand why highlighting the activities behind 'Late Start' can be useful for Project Controls - If we don't take mitigation measures, and increase performance in these activities, the project finish date will be compromised... we have a chance to finish before the late finish date.

What is the real purpose in highlighting activities that are behind their 'Late Finish' date though? These are already critically behind and have pushed the schedule back. Are we highlighting red here, because project controls are going to have to mitigate on these activities, and future activities in order to recover the schedule?

 

Any help input would be much appreciated - hope to be getting more active on these forums! Cheers

Replies

Mike Testro
User offline. Last seen 1 week 5 days ago. Offline
Joined: 14 Dec 2005
Posts: 4418

Hi Gerard

Welcome to Planning Planet you are certainly ahead of the curve in respect of 4D BIM - there is a topic head for BIM discussions so I will move it there.

When construction activities turn critical it is because something happened to make the original programme unworkable.

It was after all someones estimate of the time it will take to finish the job.

It may be possible to recover the delay by re-programming future work but that will be another guess.

If the something that happened was not caused by the contractor then there is usually a mechanism in the Contract to allow for an extension of time for the works in which case it will no longer be critical.

Best regards

Mike Testro