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Precedence Relations and Durations for a Nine Activity Project Activity Description Predecessors Duration A B C D E F G H I Site clearing Removal of trees General excavation Grading general area Excavation for trenches Placing formwork and reinforcement for concrete Installing sewer lines Installing other utilities Pouring concrete --- --- A A B, C B, C D, E D, E F, G 4 3 8 7 9 12 2 5 6

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Operation Management, Management Studies

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