PERT Terminology
Event: Denotes a performance milestone
Activity: Work (jobs) in process
Time: Estimated weighted times for completion of an
activity—optimistic (most likely) and pessimistic
Critical path: The most time consuming (longest)
chain of required activities and events in a PERT network that must be
completed on time or else the entire project will be delayed
Positive and Negative Aspects of PERT
— Excellent
scheduling tool for large, nonroutine projects
— Requires
envisioning projects in their entirety
— Provides
a tool for predicting resource needs, potential problem areas, and the effect
of delays
— Inappropriate
for repetitive assembly-line operations
— Only
as good as its underlying assumptions about event completion times
— Can
be too time-consuming if not computerized
A Sample PERT Network
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