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Time Impact Analysis using P3

2 replies [Last post]
Wed, 2005-05-04 09:01
Kashyap Mothali
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I am currently reviewing a P3 as-built schedule (for the Owner) in order to evaluate a time impact that the Contractor is claiming. Is there an accepted industry standard of performing this TIA?

In order to arrive at my conclusions, I have so far used
1) Window Analysis
2) As-Built Data (based on historic daily work sheets)

Using the above options, the results (actual delay)are fairly close to each other.

The Contractor is asking for twice the time than that in my findings. Therefore, just to back my case, could anyone suggest an alternative tested/acceptable/proven method of doing a TIA?

Thanks,

Kashyap
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Replies

Wed, 2005-05-04 10:27
#1
Rashid Iqbal
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Joined: 3 May 2005
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If you go AACE web site, you can find a large number of articles on this subject. The authors of these articles have also cited numerous court cases as well. You can observe that most of the ’authorities’ have categorized the delays as follows:

Excusable and compensable
Excusable and non-compensable and
Non excusable

You can find their descriptions and the details of the methodologies to be deployed for quantifying and proving causation in the above mentioned articles/web site. For example, the second type would be due to both the parties in parallel networks etc. Though in any case it is fairly a tricky and a contentious issue and would not be as easy as explained in literature.

Regards
Rashid
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Sat, 2005-05-14 09:10
#2
Zubaer Shariff
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After completing as-built schedule, I sugest you compare it with the target schedule, the contractor had (should have) submitted before starting the work.
-Zubaer
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