Gantt chart
The Gantt chart as a calendar view of a schedule: bars, dependencies, earliest or latest placement, visible float, critical path, milestones, progress and load per resource.
- 26 cards
- 7 topics
- Free
The outline, topic by topic
Each topic is weighted the way the exam weighs it.
- Concepts
- Questions
- Sort and link
- On the timeline
- The numbers
- Scenarios
- Understand
A few cards from the deck
Bar of a Gantt chart: what is it?
Show the answer
A rectangle placed on a date axis that represents a task: its position gives the start, its length the duration.
A task's end is therefore its start plus its length. Two bars that overlap in time run in parallel.
On day 12, expected progress = (12 − start) / duration. Which is the only task running late?
```text
Task Start Duration Progress
T1 0 6 100%
T2 4 10 30%
T3 10 6 40%
T4 12 4 0%`- T2, at 80% expected, 30% done
- T3, because it is below 50% complete
- T4, because it is at 0%
- T1 and T2, because they began before day 12
Show the answer
T2, at 80% expected, 30% done
T2 should be at (12 − 4) / 10 = 80%. T3 should be at (12 − 10) / 6, i.e. 33%: at 40%, it is ahead. T4 starts on day 12, 0% is normal. T1 is finished, so not late.
In a Gantt chart, a bar's … represents the task's duration, and its horizontal position its ….
Show the answer
In a Gantt chart, a bar's length represents the task's duration, and its horizontal position its start.
A bar's thickness has no link with the task's importance: only the horizontal axis carries information.
Milestone: what is it?
Show the answer
A marker of zero duration, often drawn as a diamond, that flags a key date of the project: delivery, approval, end of a phase.
A milestone consumes no time or resource. It is used to check progress: on its date, the tasks before it must be finished.