Transcript PERT - Mladen Miličić

Macronet 2012.
PERT Chart for Nekretnine
Homepage
design/coding
XML
configurator
TE = 11
Project
Spec.
2
6
TE = 5
1
5
Test
XML
TE = 20
TE = 23
5
TE = 14
8
1
6
4
TE = 12
2
TE = 19
3
Setup code
and dbase
Testing
portal/SEO
Contact
agents
7
[2012.]
TE = 22
6
7
5
3
Transfer
properties
1
Macronet 2012.
PERT Chart for Nekretnine
TE = 11
TE = 20
2
6
TE = 5
1
5
5
TE = 14
TE = 23
8
1
6
4
TE = 12
2
3
7
TE = 19
TE = 22
6
7
5
3
2
[2012.]
PERT Chart
Task. A project defined with list of activities and required times for completion:
Activity
No.
Activity
Expected
completion time
Dependency
1.
Specification
5 days
-
2.
XML configurator
6 days
1
3.
Setup code and dbase
7 days
1
4.
Test XML
2 days
2,3
5.
Homepage design/coding
6 days
4
6.
Contact agents
5 days
5
7.
Transfer properties
3 days
4
8.
Testing portal/ SEO
1 day
5,7
Portal is functional
a. Draw a PERT chart for the activities.
b. Calculate the earliest expected completion time.
c. Show the critical path.
3
PERT Chart (cont’d)
a.
Draw a PERT chart for the activities.
Using information from the table, show the sequence of activities.
2
1
5
8
4
3
6
7
4
PERT Chart (cont’d)
b. Calculate the earliest expected completion time.
1. Using information from the table, indicate expected completion time for each activity.
TE = 11
TE = 20
TE = 23
2
6
TE = 5
1
5
5
TE = 14
8
1
6
4
TE = 12
3
2
TE = 19
6
TE = 22
7
5
3
7
2. Calculate earliest expected completion time for each activity (TE) and the entire project.
Hint: the earliest expected completion time for a given activity is determined by summing the
expected completion time of this activity and the earliest expected completion time of the
immediate predecessor.
Rule: if two or more activities precede an activity, the one with the largest TE is used in 5
calculation (e.g., for activity 4, we will use TE of activity 3 but not 2 since 12 > 11).
PERT Chart (the end)
c. Show the critical path.
TE = 11
TE = 20
2
6
TE = 5
1
5
TE = 14
TE = 23
8
1
6
4
5
TE = 12
3
7
2
TE = 19
TE = 22
6
7
5
3
The critical path represents the shortest time, in which a project can be completed. Any activity
on the critical path that is delayed in completion delays the entire project. Activities not on6the
critical path contain slack time and allow the project manager some flexibility in scheduling.