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I was fortunate to have been mentored by Eli Goldratt in TOC and Critical Chain. Goldratt shared the Critical Chain knowledge in his book, 'Critical Chain' in May 1997 and I implemented Critical Chain in a complex multi-project company in July 1997. CP is the longest chain of task dependencies whereas CCPM is the longest chain considering task and resource dependencies. This means that the Critical Chain (CC) may consist of predecessor / dependencies task and/or resource dependencies. This means there may be a physical dependency so a task may have to finish before you can stay the successor task (task dependency). If there is a resource dependency this means a task with a limited resource has to finish on the predecessor task and be available for the next task (there is no physical dependency). This is important in understanding the difference between CPM and CCPM - So a CC is not just a CPM with no resource contention a CCPM schedules both task and resources.
Sorry for just addressing just one difference but this is a basic building block in understanding CCPM - If there is interest I will gladly share additional differences and more importantly advantages of using CCPM
Knowingly or unknowingly we used CC in our projects. In real time every one will add buffer to project plan . How and where this can be added is what CC teaches.
Critical PAth is a good way to secure your project by having only one big buffer for your project.
It deals with some well knows syndroms in Prject management like student syndrom or parkinson syndrom.
The interesting thing is taht the buffer is mutualised and it good be followed precosely and some warnings could be putted in place to prevent a sidetrack on your project.
Critical chain project management (CCPM) is a method for planning and managing projects like Critical Path Method. It is different from CPM and PERT because it relies on resource levelling and resource availability rather than activity sequences.
my thesis topic is "the performance evaluation of buffer sizing methods in CCPM and develop an comprehensive model to buffer sizing in CCPM"
there are more than 32 methods for buffer sizing in CCPM from 1997 until 2018!!!
the most important matter which is not pay attention, is Fever Chart and the Action Rate Index in planning phase.
Critical Path consists of activities that have zero total floats calculated using Critical Path Method.
Critical Chain is the same as Resource Critical Path, consisting of activities that have zero total floats in resource constrained schedule.
Resource Critical Path was also called Critical Sequence or Resource Constrained Critical Path. Critical Chain is just another name for RCP proposed by Goldratt.
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