Industrial Engineering and Production Management
In process layout

Handling and backtracking of materials is too much
Production control is more difficult and costly
All of these
Routing and scheduling is more difficult

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

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

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