Part 1: Exercises
5. Calculate early start, early finish, late start, late finish, and float for each of the activities in the network below. The duration of each activity is given.
6. Identify the critical path for the network in Exercise 5. How long should the project take?
9. Given the information below, create the project schedule network. Then, using the enumeration method, calculate and show all of the paths through the network. Show how long each path will take. Identify the critical path. Show the schedule on a Gantt chart showing critical and noncritical activities and float.
Part 2 Scheduling Problem
Complete the following:
Your child is a school theater group member and has been asked to prepare the schedule, etc. for a skit to be performed during the 4th of July celebration in the local village square. As a volunteer, you offer to serve as the project controller because of your expertise in schedule management.
1. Construct an AON diagram similar to the format used in the Youtube videos found in the commentary using an MS Excel spreadsheet. Ensure that you include a Start activity and a Finish activity. Include a legend.
Make a diagram using the example below
2. Calculate the estimated time for each activity using PERT techniques for the 3 estimates provided. Include a sample calculation.
3. Prepare a table that identifies all paths and their lengths. Which path is the critical path?
4. During the execution phase of the skit project, one of the activities on the critical path is delayed by one day. Is this serious?
5. Using the activity estimates for optimistic, pessimistic and most likely time to complete activities on the critical path, qualitatively discuss the estimate uncertainty of the critical path.
| Activity |
Predecessor |
Time (days) |
||
|
Optimistic |
Most Likely |
Pessimistic |
||
| 1 | None | 2 | 4 | 6 |
| 2 | None | 5 | 5 | 5 |
| 3 | 2 | 3 | 5 | 7 |
| 4 | 1 | 7 | 10 | 13 |
| 5 | 1 | 11 | 12 | 13 |
| 6 | 2,4 | 5 | 6 | 7 |
| 7 | 3 | 9 | 10 | 11 |
| 8 | 3,6 | 5 | 7 | 9 |
| 9 | 4 | 7 | 9 | 11 |
| 10 | 5 | 3 | 3 | 3 |
| 11 | 7 | 15 | 17 | 19 |
| 12 | 8 | 6 | 8 | 10 |
| 13 | 9,10 | 7 | 8 | 15 |
| 14 | 7 | 12 | 14 | 16 |
| 15 | 12,13 | 16 | 17 | 18 |
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