Join Chris Croft for an in-depth discussion in this video Deciding the level of granularity, part of Learning Gantt Charts.
- Next I want to mention the concept…known as granularity, the degree to which…the tasks are broken down.…I've already mentioned it briefly…in the context of clarifying your plan…when you have tasks overlapping.…The right level of detail is particularly important…to consider if one task is larger than the rest.…Also, if you have too many tasks,…I would say more than 30 in your plan,…then you should use a sub-Gantt.…This is just a Gantt chart on a separate Excel sheet…which shows the detail of the tasks…within the one larger task.…
So you can have a nice, clear overview plan,…you know the estimates are correct…because you have detailed sub-Gantts behind them,…and when you get to the implementation of those tasks,…you can monitor progress in detail…by looking at the sub-Gantt during each high-level task.…It's also good to double check the connections…between tasks as you go.…In theory, this is not needed…because your network diagram should in theory be correct.…But in my experience, it's certainly worth doing.…
I'll give you an example of this.…
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- Describe the layout of a Gantt chart.
- Define the critical path.
- Differentiate between agile, scrum, and waterfall.
- Determine how to position the floating tasks.
- Explain when it’s ideal to use a Gantt template.
- Summarize why a Gantt chart is useful for communicating with customers.