In: Operations Management
A project manager, in preparation for the construction of roads, has identified the activities and their durations to prepare a difficult stretch of motorway (as in the following table).
|
Activity |
Duration (days) |
Preceding activities |
|
A |
5 |
– |
|
B |
10 |
– |
|
C |
1 |
– |
|
D |
8 |
B |
|
E |
10 |
B |
|
F |
9 |
B |
|
G |
3 |
A, D |
|
H |
7 |
A, D |
|
J |
3 |
F |
|
K |
8 |
E, H |
|
L |
4 |
C, J |
Project network


Formula

a. Project duration = Duration of critical path = sum of duration of critical activities (i.e whose skack is 0) = 33 days
b. Critical activities = B,D,H,K
c. There won't be any change in project duration as activity A has slack of 13 days