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1. A
4
Project Networks
C
3
B
8
D
2
E
3
F
10
A-B-D-F 4+8+2+10 = 24
A-C-E-F 4+3+3+10 = 20
ES ID EF
SL
LS DR LF

2. = Early
Start
ES
Time-Related Task Properties
= Early FinishEF
= Late StartLS
= Late
Finish
LF
= Slack or FloatSL
= DurationDR
A
Task
= Early
Start
ES
= Early FinishEF
Forward
Pass
= Late StartLS
= Late
Finish
LF
= Slack or FloatSL
Backward
Pass

3. A
Forward Pass:
ES+DR=EF
C
B D
E
F0 4
4
4
12 12 14
7 7 10
10
14 14 24
Always Take Larger Number
on Forward Pass
4
8 2
3 3
10
ES ID EF
SL
LS DR LF

4. A
4
Project Networks
C
3
B
8
D
2
E
3
F
10
0 4
4
4
12 12 14
7 7 10
10
14 14 24
A-B-D-F 4+8+2+10 = 24
A-C-E-F 4+3+3+10 = 20
ES ID EF
SL
LS DR LF

5. A
Backward Pass: LF-
DR=LS
C
B D
E
F0 4
4
4
12 12 14
7 7 10
8
4 14 24
Always Take Smaller Number
on Backward Pass
4
8 2
3 3
10 2414
1411118
1412124
40
ES ID EF
SL
LS DR LF

6. A
C
B D
E
F0 4
4
4
12 12 14
7 7 10
8
4 14 24
Always Take Smaller Number
on Backward Pass
4
8 2
3 3
10 2414
1411118
1412124
40
Backward Pass: LF-
DR=LS
ES ID EF
SL
LS DR LF

7. A
Backward Pass:
Slack
C
B D
E
F0 4
4
4
12 12 14
7 7 10
14 24
4
8 2
3 3
10 2414
1411118
1412124
40
0
0 0
0
44
Slack or Float = LS - ES
ES ID EF
SL
LS DR LF

8. A
C
B D
E
F0 4
4
4
12 12 14
7 7 10
14 24
4
8 2
3 3
10 2414
1411118
1412124
40
0
0 0
0
44
Completed Project
Network
ES ID EF
SL
LS DR LF