Activity Immediate Predecessor Time(Days)

Activity-On-Node (AON)
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Activity Immediate
Predecessor Time(Days)
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A – 5
B A 18
C A 13
D B 3
E B 10
F E,C 11
G D,E 4
H G,F 9
I H 2

1) First, draw the AON network diagram
2) Find all paths, their duration and slack for each path
using visual method. Highlight the critical path on the diagram.
3) Then apply ES,EF,LS,LF algorithm to find the critical
path. Do these calculations on the diagram itself. Highlight the critical path
on the diagram. Also show slack on the diagram.
4) What is the expected length of the project?