| | A group of developers is building a new shopping center. A consultant for the developers has constructed the following project network and assigned activity times, in week
[Page 373] Determine the earliest and latest activity times, activity slack, critical path, and duration for the project. |
| | A farm owner is going to erect a maintenance building with a connecting electrical generator and water tank. The activities, activity descriptions, and estimated durations are given in the following table:
| Activity | Activity Description | Activity Predecessor | Activity Duration (weeks) |
| a | Excavate |
| 2 |
| b | Erect building | a | 6 |
| c | Install generator | a | 4 |
| d | Install tank | a | 2 |
| e | Install maintenance equipment | b | 4 |
| f | Connect generator and tank to building | b, c, d | 5 |
| g | Paint finish | b | 3 |
| h | Check out facility | e, f | 2 |
(Notice that the activities are defined not by node numbers but by activity descriptions. This alternative form of expressing activities and precedence relationships is often used in CPM/PERT.) Construct the network for this project, identify the critical path, and determine the project duration time.
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