Activity network exercise: In a project there are nine activities (A, B, C, D, E, F, G, H and I). In the accompanying table, the duration to complete these activities, their dependence (predecessor), and the relationship among the activities are given. Also given is the total float of some activities.

a. Sketch the activity network and calculate ES and EF for every activity.

b. Identify the critical path.

c. Calculate the LS and LF for every activity.

d. Complete TF and FF for every activity.

e. H ow did you find the duration of activity I?

f. Can you shorten the project by shortening activity D? Explain.

g. What will be the project duration if activity D takes 18 weeks to complete instead of 14 weeks?

h. Will the critical path change?