A=1, B=7, C=4, D=2, E=2, F=4

An engineering project is being planned using Project Network Techniques, and the precedence diagram attached as Figure la has been prepared to show the sequence of logic. The duration of each activity is shown in the standard position, quoted in weeks. Lags with durations also given in weeks are shown applied to two dependencies. (a) Complete the precedence diagram (Figure la) by adding the full analysis of start and finish times (early and late), and total float in the appropriate places. (b) Indicate the critical path on the diagram. Finish Start CA BC AE 50 90 FE 10 30 100 1 1 ED AF AD BD 70 80 20 40 EC 60 3