lob management
TRANSCRIPT
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Line Of Balance
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Q1:
Activity Predecessor Duration Rate
Z W,X,Y 10 4
W R 14 2
R - 8 4
X R 20 8
Y R 12 4
For the 65 units Construction Project using the one unit net work it is required to: 1) Draw LOB Chart. 2) Check project situation at 46th week. 3) Whatβs your recommendation if at 60th week activity Z finished in 39 unit ?
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R
0 8
8
X
8 28
20
W
8 22
14
Y
8 20
12
Z
28 38
10
A.O.N For the first unit at (N=1)
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ππ
ππ
Rate= slope = π΅βπ
ππβ ππ
N β 1 = R (ππ β ππ )
π΅ β π
πΉ = ππ β ππ
π΅ β π
πΉ = ππ β ππ
ππ = ππ + π΅ β π
πΉ
ππΆ = ππ - π΅ β π
πΉ
π
π΅ ππππ
ππππ
π¨πππππππ
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For Activity (R) : ππ = π
ππ = ππ + π΅ β π
πΉ
ππ = π + ππ β π
π = 24
Unit Time
Time
24
8
R
N= 65
N= 1
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For Activity (w) : R(w) < πΉ(R) 2 4
ππ(π) = ππ (πΉ) + π«(πΎ)
ππ = π + 14 = 22
ππ = ππ + π΅ β π
πΉ
ππ = ππ + ππ β π
π = 54
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Unit Time
Time
24
8
R
22
54
w
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For Activity (x) : R(x) > πΉ(R) 8 4
ππ(π) = ππ (πΉ) + π«πΏ
ππ = ππ + 20 = 44
ππ = ππ - π΅ β π
πΉ
ππ = ππ - ππ β π
π = 36
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Unit Time
Time
24
8
R
22
54
w
36
44
X
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For Activity (Y) : R(Y) = πΉ(R) 4 4
ππ(π) = ππ (πΉ) + π«π
ππ = ππ + 12 = 36
ππ = ππ - π΅ β π
πΉ
ππ = ππ - ππ β π
π = 20
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Unit Time
Time
24
8
R
22
54
w
36
44
X
36
20
Y
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1) Act. (Z) with Act. (X)
R(Z) < πΉ(πΏ) 4 8 ππ(π) = ππ (π) + π«π
ππ = ππ + 10 = 46
ππ = ππ + π΅ β π
πΉ
ππ = ππ + ππ β π
π = 62
2) Act. (Z) with Act. (w)
R(Z) > πΉ(πΎ) 4 2 ππ(π) = ππ (πΎ) + π«π
ππ = ππ + 10 = 64
ππ = ππ - π΅ β π
πΉ
ππ = ππ - ππ β π
π = 48
For Activity (Z):
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Unit Time
Time
24
8
R
22
54
w
36
44
X
36
20
Y
64
48
Z
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Unit Time
Time
24
8
R
22
54
w
36
44
X
36
20
Y
64
48
Z
46
46
N = ???
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w
46
46
N = ???
Time
Time
22
54
R = π΅βπ
ππβ ππ
2 = π΅βπ
ππβππ
N =49
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2) The project situation at 46th week. Activities R, Y AND X has been finished Activity W finished in 49 unit Activity Z not finished yet in any unit
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Unit Time
Time
24
8
R
24
54
w
36
44
X
36
20
Y
64
48
Z
60
60
N = ???
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Unit Time
Time
48
Z
60
60 64
N = 49
N = 39
πΉπππ=
ππ βππππ β ππ
=6.5
πΉπππ
πππππ
πΉπππ = ππβπ
ππβππ = 3.1666 < 4