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LGB40703 - SHIPYARD AND ENGINEERING PROJECT MANAGEMENT Case Study 2 (Total 20 marks) a. Proper project planning helps schedule and manage complex projects. Using the forward and backward passes of CPM, evaluate and fill up Table 1 below. (use the following conditions as your guide) Ef = Es + activity time Es = Ef - activity time Lf=smallest Ls of immediate successor (or, for last node, LsELf - activity time highest Ef of last node) Slack Lf-Ef Es = highest Ef predecessor Table 1: Task Information Immediate Duration Task Es EF Ls Predecessor (days) LF Slack CP A 5 B A 4 A 6 D A 5 E B,C,D 6 F B,C,D 8 G B,C,D 6 I B,C,D 5 1 GH 8 J E 7 ES, EF, LS, LF and Slack ii. Critical Path (CP) and its duration iii. Discuss the outcome on the CP when its attributes are varied. iv. Manually draw the network diagram (indicating all early/late starts and early/late finish times and CP) using the forward and backward passes