Critical Chain Exercise
Consider a project with the activity precedence relationships
and time estimates given in the following table.
|
Activity |
Predecessors |
Duration |
|
A |
– |
6 |
|
B |
A |
12 |
|
C |
A |
4 |
|
D |
B,C |
10 |
|
E |
C |
10 |
Two workers are available. Due to his skill set, Jack is
responsible for activities A and B. Similarly, only Amy can do
activities C, D and E.
Assuming that the time estimates are perfectly accurate, what is
the expected project duration? Explain. (Use the time estimates as
is; do not insert project or feeding buffers.)
(1 point)
Use the ideas from the Critical Chain to reformulate the project
schedule using project and feeding buffers. Include a diagram
similar to that discussed in class. (3 points)
Assume Jack and Amy can be cross trained to do any activity, but
will not share activities. Can the activities be reassigned to Jack
and Amy such that the project is completed in less time? If so,
indicate the new assignment and project duration. (2 points)
Consider the following assignment: Jack does activities A and D,
Amy does activities B, C and E. Use the ideas from the Critical
Chain to reformulate the project schedule using project and feeding
buffers. Include a diagram similar to that discussed in class. (4
points).





