EFT LFT Float (LF-EF) Project Description

Potnuru R – MRE5003 – Assignment 3
Activity 3A
3A.1 Network diagram for the job
Set of activities are properly arranged and organized for a small maintenance
project and the detail of the project is given in the below table:
Activi
ty
People required at the
same time
Duration
(days)
EF
T
LF
T
Float (LF-
EF)
1-2 3 3 3 5 2
1-3 2 4 4 4 0
2-4 4 3 6 8 2
2-5 5 3 9 11 2
3-4 3 4 8 8 0
4-5 2 4 12 12 0
Critical path (CP) is referred to a sequence of activities in a project plan or the
longest path followed for completion of any project. The critical path for this
project is highlighted with red colour line 1-3-4-5. Activity which is on critical
path cannot be initiated unless the predecessor activity gets completed. If the
project is delayed for a single day then entire project will be delayed.
1

1
2
3
5
4
Potnuru R – MRE5003 – Assignment 3
Figure 1: Activity on Node (AON) diagram for the project
3A.2 Bar chart for allocating labours
The project will be accomplished followed by 6 activities in a sequence. For
completion of each task, no more than 5 people will be allocated. For each
activity, based on the allocated resources a bar chart that is created elaborated
below:
Acti
vity
Peopl
e
Requ
ired
Dur
atio
n
D
ay
1
D
a
y
2
D
ay
3
D
a
y
4
D
ay
5
D
a
y
6
D
ay
7
D
ay
8
D
ay
9
Da
y
10
Da
y
11
Da
y
12
A1-2 3 3 3 3 3
A1-3 2 4 2 2 2 2
A2-4 4 3 4 4 4
A2-5 5 3 5 5 5
A3-4 3 4 3 3 3 3
A4-5 2 4 2 2 2 2
People
Neede
d 5 5 5
1
1
1
2
1
2 3 3 2 2 2 2
People
Availa
ble 5 5 5 5 5 5 5 5 5 5 5 5
Short/
Surplu
s 0 0 0 6 7 7 -2 -2 -3 -3 -3 -3
2

Potnuru R – MRE5003 – Assignment 3
Figure 2: Bar chart for the project
3A.3 Reconfiguration of project plan
The project was running well but at the initiation of 6th day one worker (labour 4)
asked for 3 off days (day 6th, 7th and 8th). Reconfiguration of project resources
identifies that the total numbers of days will be increased from 12 days to 15
days.
Figure 3: Resource allocated for the project
Activity 3B
Activity 3B.1
The plant improvement project in the workplace is comprises of 10 activities. The
optimistic, pessimistic time are provided and the SD for the project is calculated
in the below table using (P-O)/6.
Activi
ty no
Optimist
ic time
(OT)
Most
likely
time
(MLT)
Pessimis
tic time
(PT)
Estimated
time
(OT+4MLT+
PT)/6
Standard Deviation
(P-O)/6
1-2 4 10 16 10 2
1-3 6 6 6 6 0
1-4 3 5 9 5.33 1
2-6 3 7 11 7 1.33
3-5 2 2 2 2 0
3-6 6 4 10 5.33 0.66
3