The string diagram is a scale plan or model on which a thread is used to trace and measure the path of workers, material or equipment during a specified sequence of events.
Use of string diagram
1) To trace the path of workers
2) To trace material and equipment
3) To measure path of worker , material , equipment
4) To find time required for processing
String Diagram:
1. A string diagram is defined as a scale plan or model on which a thread is used to trace and measure the path of workers, materials or equipments during a specified sequence of events.
2. It is a special form of flow diagram in which a string or thread is used to represent the movements.
3. The purpose of using string is to measure the distance between the two movements.
4. Repetitive movement and too many paths make the flow diagram congested and it becomes difficult to understand.
5. The paths which are travelled more frequently calls for critical examination of the work points or movement.
6. A String diagram for a particular process is shown in following fig.