R.C.Coleman sell many types of food products to grocery store and supermarket outlets. The order request for the outlets includes many different types of products from 20 to 50. Warehouse, the R.C.Coleman current operation, they use labors to dispatch the order-picking and have the goods moved to the ware house shipping area. Now, the management decide to automate the operation because of the high cost and ow productivity for labors. After consulting with members of the engineering staff and warehouse management personnel, the director complied a list of activities associated with the project. The optimistic, most probable, and pessimistic times have also been provided for each activity.
Develop a report that presents the activity schedule and expected project completion time for the warehouse expansion project. Include a project network in the report. In addition, take into consideration the following issues: 1. R. C. Coleman’s top management established a required 40-week completion time for the project. Can this completion time be achieved? Include probability information in your discussion. What recommendations do you have if the 40-week completion time is required? 2. Suppose that management requests that activity times be shortened to provide an 80% chance of meeting the 40-week completion time. If the variance in the project completion time is the same as you found in part (1), how much should the expected project completion time be shortened to achieve the goal of an 80% chance of completion within 40 weeks? 3. Using the expected activity times as the normal times and the following crashing information, determine the activity crashing decisions and revised activity schedule for the warehouse expansion project: [pic]
R.C. Coleman's Project Network
|Activity |Expected Time |Variance | |A |6 |0.44 | |B |9 |2.78 | |C |4 |0.44 | |D |12 |7.11 | |E |10 |1.00 | |F |6 |0.44 | |G |8 |7.11 | |H |6 |0.44 | |I |7 |2.78 | |J |4 |0.11 | |K |4 |0.44 |
| |Earliest |Latest |Earliest |Latest | |Critical | |Activity |Start |Start |Finish |Finish |Slack |Activity | |A |0 |3 |6 |9 |3 | | |B |0 |0 |9 |9 |0 |Yes | |C |9 |9 |13 |13 |0 |Yes | |D |13 |17 |25 |29 |4 | | |E |13 |13 |23 |23 |0 |Yes | |F |23 |23 |29 |29 |0 |Yes | |G |13 |21 |21 |29 |8 | | |H |29 |29 |35 |35 |0 |Yes | |I |29 |32 |36 |39 |3 |...
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