What is the correct form of Critical Path Method diagram?

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Minquan Wang

January 07, 2021 02:18

On Ballast page 4-7, a sample of the critical path method diagram is given:

In this diagram, the circles represent starting/ending points of the tasks, while the arrows in between represent tasks.

In Black Spectacle's practice exam however, a question showed the critical path method diagram in a different form:In this diagram, the circles represent tasks themselves.

Which is the "correct" or "standard" way of drawing a critical path method diagram?

Thanks!

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  Susan Scarlet-Macaw January 08, 2021 00:40

  The path that takes you the longest time to complete the work is the critical path. 

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  Helena Lee Ling Yeo January 08, 2021 21:00

  They placed the duration under the circle that made me missed it too. 5+8+1 =14 the longest path

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  Benjamin Eckhard January 14, 2021 23:57

  Hey! This threw me off when I was studying as well, but after some research with a friend we figured out the confusion. These are actually two different charts. One is a PERT chart and the other is a Critical Path Method (CPM) chart. I'm including a link that gives a great explanation of when you'd use one vs the other.

  In summary though, they both appear very similar. This article explains it well.

  Ben | Archizam

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