Critical Chain Theory of Constraints in Project Management

F C D A B E G Student Syndrome : “ I have sufficient time ” Parkinson ’s Law : Work will take all available time Murphy ’s Law : Failure at the first step Bad multitasking : “ I do more in ... more time ” Problems in projects 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 weeks 17 18 19 20 21

Student Syndrome : “ I have sufficient time ”

Parkinson ’s Law : Work will take all available time

Murphy ’s Law : Failure at the first step

Bad multitasking : “ I do more in ... more time ”

Task 1 Task 2 Task 3 Bad Multi-tasking Tasks 1 and 2 are delayed

Task 1 Task 2 Task 3 No task was completed on time Bad Multi-tasking

50% 80% probability Estimating

50% 80% probability 50% 80% Estimating

probability 50% 80% Estimating

F C A B E G D Project according to estimation Step 1 – Identify the restriction 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 weeks 17 18 19 20 21

A B E G 50% The project after moving the contingency Step 2 – Explo it the restric tion 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 săptămâni 17 18 19 20 21

A B E G 25% 25% The project after cutting the contingency in half Step 2 – Explo it the restric tion 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 weeks 17 18 19 20 21

The project with non-critical tasks A B E G 25% 25% F C D Step 3 – Subo r d inating to the restriction 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 săptămâni 17 18 19 20 21

F C A B E G D Feeding-buffer not consumed 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 weeks 17 18 19 20 21

F C A B E G D Feending buffer consumed 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 weeks 17 18 19 20 21

A B E G 35% 15% Monitoring the project 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 weeks 17 18 19 20 21

A B E G 35% 60% Monitoring the project 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 weeks 17 18 19 20 21

Good luck !