Homework Answers
First, I have prepared Network Diagram based on Forward Path method and Backward Path method.
Loading schedule for each resource:
here, i have calculated Number of EE and Number of ME per day
| Activity | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 1 | EE | EE | |||||||
| 2 | EE | EE | EE | EE | |||||
| 3 | ME | ME | ME | ||||||
| 4 | EE | ||||||||
| 5 | ME | ME | ME | ME | ME | ME | |||
| 6 | ME | ME | |||||||
| 7 | EE | EE | EE | EE | |||||
| EE | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 0 | 0 |
| ME | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 |
Below data is created using above network diagram:
| Activity | ES | LS | EF | LF | SL |
| 1 EE | 0 | 2 | 0 | 2 | 0 |
| 2 EE | 0 | 4 | 3 | 7 | 3 |
| 3 ME | 0 | 3 | 2 | 5 | 2 |
| 4 EE | 2 | 3 | 2 | 3 | 0 |
| 5 ME | 3 | 9 | 3 | 9 | 0 |
| 6 ME | 4 | 6 | 7 | 9 | 3 |
| 7 EE | 3 | 7 | 5 | 9 | 2 |
Based on the network diagram, we can conclude that project needs at least 9 units time to complete.
SLACK for activity 2 = 3, SLACK for activity 6 = 3 and SLACK for activity 7 = 2
After Resource leveling, here, we have 1 EE and 1 ME each day.
| Activity | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 1 | EE | EE | |||||||||
| 2 | EE | EE | EE | EE | |||||||
| 3 | ME | ME | ME | ||||||||
| 4 | EE | ||||||||||
| 5 | ME | ME | ME | ME | ME | ME | |||||
| 6 | ME | ME | |||||||||
| 7 | EE | EE | EE | EE | |||||||
| EE | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| ME | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Based on it we see that project needs at least 11 unit time to complete
here, I have considered that all activities are independent to each other.
here, critical paths are Start - 1-4-5-6- End and Start-3-7-2-End
here, critical activities are 1,2,3 4, 5 and 6
after leveling
SLACK for activity 2 = 0,
SLACK for activity 6 = 0
and
SLACK for activity 7 = 0
Network diagram after resource leveling:
Add Answer to:
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