DCMA 14 point schedule check – Critical Path Length Index

In our twelfth article looking at the 14 point check we described how we used the Critical Path Test, in this post we are going to take a look at the Critical Path Length Index.

The DCMA criteria states that a Critical Path Index of 1 or above in favourable and below 1 is unfavorable.

Critical Path Length Index Check

To check this is Primavera P6 we used the following steps:

Step 1. Open the required project for analysis in Primavera P6 and make a note of the Total Float

Step 2. Select Group and Sort, select <None> in the grouping and filter on critical activities only.

Step 3. Go back into Grouping & Sort and select show grand totals. The Duration for the Critical Path is shown, document this down.

Step 4. Now we have the data we can apply the formula – CPLI = (Critical Path Length +/- Total Float ) / Critical Path Length

If the index is 1 or above then the criteria has been met, if below one then the schedule may require a review.

There are a further 13 checks prescribed by the DCMA which along with the Invalid Dates Check will be detailed out in further supporting documentation and video tutorials at http://www.myxacom.com where knowledge is no weight to carry.

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