Question

Consider the following set of activities: Time Predecessor Activity Required Activities A 5 None B 4...

Consider the following set of activities:

Time Predecessor
Activity Required Activities
A 5 None
B 4 A
C 5 B
D 8 B
E 9 C
F 6 C,D
G 8 D
H 3 E,F,G
a.     Draw the CPM network for this problem.
b.     Calculate and summarize the earliest and latest start and finish times, the slack for each activity, and the critical activities.
c.     What is the earliest time that the project can be completed?
d.     If the project needed to be completed two (Time) earlier, what would you recommend?
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Answer #1

Activity
ES EF LS LF Slack Critical
A 0 5 0 5 0 Yes
B 5 9 5 9 0 Yes
C 9 14 11 16 2 No
D 9 17 9 17 0 Yes
E 14 23 16 25 2 No
F 17 23 19 25 2 No
G 17 25 17 25 0 Yes
H 25 28 25 28 0 Yes

The earliest completion time is 28.

If the project needs to be completed 2 times earlier, the activity G should be crashed ( reduced for time) for 2 days.

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