Industrial Engineering and Production Management
For a product layout the material handling equipment must

Have full flexibility
Be a general purpose type
Be designed as special purpose for a particular application
Employ conveyor belts, trucks, tractors etc.

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Industrial Engineering and Production Management
A big advantage of PERT over Gantt charts is that in the former case

Early start and late finish of an activity are clearly marked
Activity times are clear
Interrelationship among activities is clearly shown
Activities and events are clearly shown

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Industrial Engineering and Production Management
The assumption in PERT is

A project will always be behind schedule, if left uncorrected
Activities are fixed and can't be changed
Cost of project will always be more than the estimated cost, if no timely corrections are taken
A project can be subdivided into a set of predictable, independent activities

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