The Denver Iron & Steel Company is expanding its operations to include a new dri

Question

The Denver Iron & Steel Company is expanding its operations to include a new drive-in weigh station. The weigh station will be a heated air-conditioned building with a large floor and small office. The large room will have the scales, a 15-foot counter, and several display cases for its equipment. Before erection of the building, the project manager evaluated the project using probabilistic modeling. The following activities with their corresponding times (in weeks) were recorded. Draw the network showing expected activity durations for this project using the AIB method. Find the critical path and the expected completion time for the project. Sketch the normal distribution for this project showing the (-3sigma, -2 sigma, -1 sigma, 1 sigma, 2 sigma, 3 sigma) points on the curve. What is the 2.5 sigma duration for completing the project?

Explanation / Answer

project network 10 64 10 15 71 12 20 5 27 39 59 3 6 3 6 62 68 6 Activity tO tm tP Expected time 0 m p ( o+4m+p)/6 1 8 10 13 10 2 5 6 8 6 3 13 15 21 16 4 10 12 14 12 5 11 20 30 20 6 4 5 8 5 7 2 3 4 3 8 4 6 10 6 9 2 3 4 3 THE CRITCICAL PATH= Start-1-3-4-4-dummy--7-8-9-finish = 71 DAYS 3.00 Rest is not solved through excel by me.

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