(A) Determine the earliest and latest activity times and slack time for each act

Question

(A) Determine the earliest and latest activity times and slack time for each activity. You need to follow the above network and redraw the network as in the format of the network.
(B) which path is the critical path?
(C) how long is the project duration? (A) Determine the earliest and latest activity times and slack time for each activity. You need to follow the above network and redraw the network as in the format of the network.
(B) which path is the critical path?
(C) how long is the project duration? 1 9 2 3 3 1 8 2

Explanation / Answer

The activities with their earliest and latest starting times are as follows:

Project duration is 15 months and critical path is one having critical activities (having slack zero).

Critical path Start-1-3-7-8-10-12

Earliest Latest Activity Time Start Finish Start Finish Float 0---1 2 0 2 0 2 0 1---2 2 2 4 6 8 4 1---3 5 2 7 2 7 0 1---4 4 2 6 4 8 2 2---5 4 4 8 8 12 4 3---5 4 7 11 8 12 1 3---6 3 7 10 8 11 1 3---7 1 7 8 7 8 0 4---8 3 6 9 8 11 2 5---11 2 11 13 12 14 1 6---9 1 10 11 13 14 3 6---10 3 10 13 11 14 1 7---8 3 8 11 8 11 0 8---9 1 11 12 13 14 2 8---10 3 11 14 11 14 0 9---12 1 12 13 14 15 2 10---12 1 14 15 14 15 0 11---12 1 13 14 14 15 1

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