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15. Draw a precedence network for 3 activities: A, B, and C; with durations of 9, 4, and 7 days; respectively, and connected with SS and FF relationships. Put a 2-day lag on every SS relationship and a 1-day lag on every FF relationship. All activities are contiguous. Do the CPM calculations. (5 points) 16. In the context of scheduling, what do we mean by resources? What is resource allocation? What is resource leveling? Discuss resource leveling in a multi-project environment. (4 points) 17. Give two examples (each) of salaried staff, hourly workers, construction materials, installed materials, construction equipment, and installed equipment. For the above examples, which ones are classified as "materials" and which ones are classified as "equipment" for a cost estimator? (4 points) 18. In the network below: (5 points, bonus) Activity Duration IPA Workers 2 A 6 B 2 C 8 A D 5 A, B E 3 B F 6 D. E G 5 C, D H F. G 3 Try to reduce the maximum resource need to less than 8 workers per day. Can you do that? If not, can you shift activities -manually- so you improve resource daily usage? (We try to start low, increase the resource usage gradually till they peak around the middle of the project, then gradually decrease them towards the end of the project.) I3354323 5 3 2