Exploiting Resource Availability

One of the leading, alleged causes of late projects is that resources are not available, or are not available in sufficient quantity, when needed. CCPM requires a mechanism to prevent the critical-chain tasks from starting late or taking longer due to the resource. Goldratt proposed a resource buffer to provide information to the critical-chain resources about when they will be needed. I rely on a more traditional approach, greatly facilitated by modern PC-based project software. The approach I recommend is to filter the project file for each type of resource and to give each a reasonable time window (perhaps three to four weeks) so that each resource or resource manager can see what tasks are upcoming. Doing this with the working schedule provides a continuous best estimate of when the task is likely to start. I avoid printing columns of dates on these reports, as dates rapidly lead people back into expecting deterministic dates. Instead, I let the calendar illustrate rough date intervals. Figure 4.7 illustrates an example.

Task 1

Task 2

Task 2

Figure 4.6 Aggregating uncertainty reduces planned project lead-time while maintaining the level of due-date protection.

Task Name

|10|17|24| 31| 7 |14|21|28| 4 |11|18|25| 4 |11|18|25 1 | 8 |15|22|29| 6 |13|20|27| 3 |10|17|

Jul '01

Task Name

Dec'00 I Ian '01 | Feb '01 | Mar'01 I Apr| May'01 | |un '01

I I I m| I I -8 I I I n I l.-l 5 I I I M I I^ I I - I I - I I I 6 I || I I |..| I I

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Project Management Made Easy

Project Management Made Easy

What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.

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