Question

Please explain when is a Gantt Chart useful?  When is a network diagram useful? How are they different? Is there any of them that is more preferable than the other?

Answer 1

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Gantt charts are useful for planning and scheduling projects. They help you assess how long a project should take, determine the resources needed, and plan the order in which you'll complete tasks. Gantt charts are useful for monitoring a project's progress once it's underway, too.

Network Diagrams help justify your time estimate for the project. Since network diagram of a project shows how activities are interrelated with each other from the beginning of the project till the end, it will be very beneficial for calculating the overall project duration.

Gantt charts use horizontal bars across a linear representation of time to show the duration of tasks graphically, whereas network diagrams use basic flow-charting tools to represent graphically the tasks through a workflow.

Gantt Chats use rows of tasks with bars stretching across a time period to allow managers to review dependencies by identifying the rows of data required to be completed before tasks can begin. Classic Gantt charts do not graphically show the dependencies of work in the time-barred section of the chart. Many software programs supporting Gantt chart creation now map the dependencies visually as an added functionality. Network diagrams do not require additional steps to map dependencies. Visual representations, in flow-chart format, directly identify the dependencies with arrowed indicators. Network diagram is preferrable in more cases than grantt charts.

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