Calculate the following time estimates for each activity. Earliest Start Time(EST) Earliest Finish Time(EFT) Latest Start Time(LST) Latest Finish Time(LFT)
Consider the network diagram which
consists of the following activities.
Calculate the following time
estimates for each activity.
Ø Earliest Start Time(EST)
Ø Earliest Finish Time(EFT)
Ø Latest Start Time(LST)
Ø Latest Finish Time(LFT)
Solution
|
Activities |
Duration |
EST |
EFT=EST+D |
LST=LFT-D |
LFT |
|
0-1 |
2 |
0 |
0+2=2 |
2-2=0 |
2 |
|
1-2 |
8 |
2 |
2+8=10 |
16-8=8 |
16 |
|
1-3 |
10 |
2 |
2+10=12 |
12-10=2 |
12 |
|
2-4 |
6 |
10 |
10+6=16 |
22-6=16 |
22 |
|
2-5 |
3 |
10 |
10+3=13 |
25-3=22 |
25 |
|
3-4 |
3 |
12 |
12+3=15 |
22-3=19 |
22 |
|
3-6 |
7 |
12 |
12+7=19 |
19-7=12 |
19 |
|
4-7 |
5 |
16 |
16+5=21 |
27-5=22 |
27 |
|
5-7 |
2 |
13 |
13+2=15 |
27-2=25 |
27 |
|
6-7 |
8 |
19 |
19+8=27 |
27-8=19 |
27 |
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