Critical Chain Critical Chain Theory of Constraints in Project Management
Jan 16, 2015
Critical ChainCritical ChainTheory of Constraints in Project Management
Theory of Constraints in Project Management
FF
CC DD
AA BB EE GG
161 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”
Problems in projects
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
probability50%
80%
Estimating
FF
CC
AA
161 2 3 4 5 6 7 8 9 10 11 12 13 14 15
weeks
17 18 19 20 21
BB EE GG
DD
Project according to estimation
Step 1 – Identify the restriction
AA
161 2 3 4 5 6 7 8 9 10 11 12 13 14 15
săptămâni
17 18 19 20 21
BB EE GG
50%
The project after moving the contingency
Step 2 – Exploit the restriction
AA
161 2 3 4 5 6 7 8 9 10 11 12 13 14 15
weeks
17 18 19 20 21
BB EE GG
25% 25%
The project after cutting the contingency in half
Step 2 – Exploit the restriction
The project with non-critical tasks
AA
161 2 3 4 5 6 7 8 9 10 11 12 13 14 15
săptămâni
17 18 19 20 21
BB EE GG
25% 25%FF
CC DD
Step 3 – Subordinating to the restriction
FF
CC
AA
161 2 3 4 5 6 7 8 9 10 11 12 13 14 15
weeks
17 18 19 20 21
BB EE GG
DD
Feeding-buffer not consumed
FF
CC
AA
161 2 3 4 5 6 7 8 9 10 11 12 13 14 15
weeks
17 18 19 20 21
BB EE GG
DD
Feending buffer consumed
AA
161 2 3 4 5 6 7 8 9 10 11 12 13 14 15
weeks
17 18 19 20 21
BB EE GG
35%
15%
Monitoring the project
AA
161 2 3 4 5 6 7 8 9 10 11 12 13 14 15
weeks
17 18 19 20 21
BB EE GG
35%
60%
Monitoring the project
Good luckGood luck!!