Page 254 - DCOM303_DMGT504_OPERATION_RESEARCH

Unit 12: Critical Path Method and PERT

P (Z <Z ) = 0.5 –  (0.8944) (from normal tables,  (0.8944) = 0.3133) Notes
0
= 0.5 + 0.3133
= 0.8133
= 81.33%

Self Assessment

Fill in the blanks:

5. A ........................... has no slack.
6. The ........................... of an activity is the amount of time available by which it is possible to
delay its completion time without extending the overall project completion time.

7. ........................... refers to analyzing and evaluating the actual progress against the plan.
8. Project Management consists of ........................... phases.
9. An ........................... represents an action and consumption of resources required to complete
a portion of a project.
10. ........................... is the method to analyse the involved tasks in completing a given project.
11. Planning can be explained as the process of ........................... and ........................... a plan.
12. The probability of completing the project within the scheduled time or contracted time
may be obtained by using the ...........................
13. ........................... analysis is the general time given to certain specific techniques which can
be used for the planning, management and control of projects.
14. Pessimistic time is the ........................... time an activity would take to complete.
15. ........................... time is the normal time taken to complete an activity.

12.5 Summary

 Network analysis is the general name given to certain specific techniques which can be
used for the planning, management and control of projects.
 Critical Path Method (CPM), is a procedure for using network analysis to identify those
tasks which are on the critical path i.e. where any delay in the completion of these tasks
will lengthen the project timescale, unless action is taken.

 For all tasks off the critical path, a degree of tolerance is possible (e.g., late start, late
completion, early start, etc.).
 The CPM formally identifies tasks which must be completed on time for the whole project
to be completed on time Identifies which tasks can be delayed for a while if resource needs
to be reallocated to catch up on missed tasks.

 It helps you to identify the minimum length of time needed to complete a project.
 The CPM determines both the early start and the late start date for each activity in the
schedule.

 PERT is a method to analyze the involved tasks in completing a given project, especially
the time needed to complete each task, and identifying the minimum time needed to
complete the total project.

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