1. A CPM network diagram is drawn using AOA (activity on arrow) format to analyze the schedule:

Immediate

Activity Pred. Duration (day)

a - 3

b a 4

c a 5

d - 3

e d 6

f b,c,e 7

a) Show all potential paths and their durations.

b) Calculate ES, EF, LS, LF and Slack for all activities.

c) How long is the project duration?

d) If activity a is delayed by 2 days, what is your new estimate on total project duration?

e) If all activities are on schedule and then activity e is delayed by one day, what is your new estimate on total project duration?