Consider the project described:
|
Activity
|
Immediate
Predecessors
|
Normal
Time
|
Normal Cost
|
Crash Time
|
Crash Cost
|
|
A
|
-
|
6
|
100
|
6
|
100
|
|
B
|
A
|
10
|
2,000
|
4
|
2,600
|
|
C
|
A
|
10
|
800
|
8
|
920
|
|
D
|
B
|
6
|
700
|
5
|
750 ...
|
|
E
|
B
|
8
|
1,000
|
6
|
1,140
|
|
F
|
C,D
|
9
|
1,400
|
7
|
1,550
|
|
G
|
E
|
14
|
3,000
|
10
|
3,320
|
|
H
|
E, F
|
10
|
900
|
8
|
1,020
|
a) Draw an activity-on-arrow diagram for the project.
b) Using the normal activity times (in weeks), carry out the forward and the backward pass calculations. Identify the critical path (A-B-D-F-H), the total project time and total normal project cost.
c) Determine which activities to crash and by how much to achieve a project completion time of 36 weeks at minimum cost. Provide a crash table.