Question: Q 3 Given the data below for a small pipeline project, based on a PERT analysis, 25 marks a) (15 marks) Estimate the project duration.

Q 3 Given the data below for a small pipeline

Q 3 Given the data below for a small pipeline project, based on a PERT analysis, 25 marks a) (15 marks) Estimate the project duration. b) (10 marks) What is the probability the project is completed in 120 days or less? Activity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Description Start Lead Time Move to Site Obtain Pipes Obtain Valves Lay Out Pipeline Dig Trench Prepare Valve Chambers Cut Specials Lay Pipes Fit Valves Concrete Anchors Finish Valve Chambers Test Pipeline Backfill Clean Up Leave Site End t. 0 10 18 20 18 6 20 17 7 18 8 11 8 5 8 2 3 0 10 20 30 20 7 25 18 9 20 10 12 8 6 10 3 4 0 10 22 100 70 14 60 31 17 46 12 13 8 7 20 10 5 Followed by Activity 2 3,4,5 6 8,9,10 11 7 8.10 11 11 12 13, 14 13, 14, 15 17 16 16 17 18

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