The later in the sequence this occurs, the less likely any action will be taken.
Penetration into the middle third of the buffer does call for some action on the part of the CCPM project manager. In this case, the correct action is to investigate the cause of the slippage and put a get-well plan in place. The earlier in the sequence this occurs, the more serious the problem.
Penetration into the final third of the buffer is serious regardless of when in the sequence it occurs. Obviously, if it is in the first third of the duration of the sequence, it is very serious. If it occurs late in the final third, there may be little that can be done. In any case, action is called for.
Figure 12.7 is a matrix that can be used to determine schedule slippage severity and need for action as a function of buffer penetration and distance into the task sequence.
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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.