From the following data calculate NWD. Identify the critical path & its duration. Calculate EST, EFT, LST, LFT & TF for each activity.
NWD Diagram
| Path | Duration |
| 1-2-4-9-10 | 4+1+5+7 =17 |
| 1-3-5-7-8-10 | 1+6+8+2+5 =22 -Critical Path |
| 1-3-4-9-10 | 1+1+5+7 =14 |
| 1-3-5-6-8-10 | 1+6+4+1+5 =17 |
Table showing EST, EFT etc
| Activity | Duration | EST | EFT | LST | LFT | TF |
| 1-2 | 4 | 0 | 4 | 5 | 9 | 5 |
| 1-3 | 1 | 0 | 1 | 0 | 1 | 0 |
| 2-4 | 1 | 4 | 5 | 9 | 10 | 5 |
| 3-4 | 1 | 1 | 2 | 9 | 10 | 8 |
| 3-5 | 6 | 1 | 7 | 1 | 7 | 0 |
| 4-9 | 5 | 5 | 10 | 10 | 15 | 5 |
| 5-6 | 4 | 7 | 11 | 12 | 16 | 5 |
| 5-7 | 8 | 7 | 15 | 7 | 15 | 0 |
| 6-8 | 1 | 11 | 12 | 16 | 17 | 5 |
| 7-8 | 2 | 15 | 17 | 15 | 17 | 0 |
| 9-10 | 7 | 10 | 17 | 15 | 22 | 5 |
| 8-10 | 5 | 17 | 22 | 17 | 22 | 0 |
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