Answer A, B, C, D and E

1. The Denver Iron and 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 ft counter and several display cases for its equipment. Before erection of the building, the project manager evaluated the project using CPM analysis. The tasks with their corresponding times were recorded in the table below. Task No. Task Description Preceding Tasks Duration (days) 6 10 12 D F B A, C D 20 Lay foundation Dig hole for scale Insert scale bases Erect frame Complete building Insert scales Insert display cases Put in office equipment Finishing touches Calibrate scales 4 I J 2 T F a. Draw the AON network diagram for this project. b. What is the shortest duration for this project? List the tasks on the critical path(s)? c. Calculate the Early Start, Early Finish, Late Start and Late Finish times for each task, and draw them on the AON diagram. d. Calculate the Free Slack and Total Slack for each task. Suppose at the end of first week, the project team reviewed the actual costs spent is $20,000, while the planned cost for the first week is $18,000. Furthermore, the team also discovered that the value of work completed is only 75% of planned. Assume that the original budget is $500,000. Find out the Cost variance, schedule variance, cost performance index and schedule performance index for this project. Expected cost at completion and the expected date of completion