Civil Engineering Reference
In-Depth Information
Figure 4.8 Node diagram for example 4.3
Performing the CPM calculations, we find the early dates, late dates, total
float (TF), and free float (FF) for all activities, as shown in the following table.
Activity
Duration
ES
EF
LS
LF
TF
FF
A
2
02020 0
B
7
298 56 0
C
10
2
12
2
12
0
0
D
4
268 26 0
E
6
9 5 1 7 2 7
F
5
12
17
15
20
3
0
G
8
12
20
12
20
0
0
H
9
6 5 7 6 1 2
I
2
0 2 0 2 0 0
J
5
17
22
22
27
5
0
K
5
22
27
27
32
5
5
L
6
20
26
26
32
6
6
M
4
17
21
28
32
11
11
N
3
32
35
32
35
0
0
More Definitions
Free float
can be defined as the maximum amount of time an activity can be delayed
without delaying the early start of the succeeding activities. Some authors add
“and without delaying the entire project.” This statement is not incorrect, but it is
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