Project management
Sam's.Tech
assignment_.docx
Time-Cost Trade-Offs
|
Activity |
Predecessor |
Total Normal time (day) |
Total Crash time (day) |
Total Normal cost ($) |
Total Crash cost ($) |
Available crashing days |
Crashing cost per day (cost slope) |
|
A |
--- |
6 |
5 |
60 |
90 |
|
|
|
B |
--- |
7 |
4 |
50 |
150 |
|
|
|
C |
A |
6 |
4 |
100 |
200 |
|
|
|
D |
A |
7 |
7 |
30 |
30 |
|
|
|
E |
B |
5 |
4 |
70 |
85 |
|
|
|
F |
C |
9 |
7 |
40 |
120 |
|
|
|
G |
E, D |
7 |
4 |
50 |
230 |
|
|
Overhead project costs (Indirect costs) are $70 per day.
Please crash the project and find the project schedule with the lowest total cost (indirect cost + direct cost).
Rule of thumb:
· Crash the project one period at a time.
· Crash the least expensive activity that is on the critical path.
· Critical path will very likely change after each crashing, find new critical path each time before crashing.
