In order to put this information in a graphical format we draw what we call a Gantt Chart, also known as a Cascade Diagram. There are different ways in which we can present these charts.

This is one way of presenting it, based on the example above:

This is one way of presenting it, based on the example above:

Vertical red lines represent the end of critical activities.

The dotted pencil lines represent the floats of the activities.

It is quite clear how this chart was constructed from the information above. However, the second way of presenting it places all of the critical activities side by side at the top, making it easier to see how the schedule may fit together – see below.

Note that vertical gaps/no gaps between bars (activities) on charts do not make a difference.

The dotted pencil lines represent the floats of the activities.

It is quite clear how this chart was constructed from the information above. However, the second way of presenting it places all of the critical activities side by side at the top, making it easier to see how the schedule may fit together – see below.

Note that vertical gaps/no gaps between bars (activities) on charts do not make a difference.

Total length of all activities = 41

Time = 17

41/17 = 2.412 – therefore minimum 3 workers required to complete within time.

The most useful way of presenting a Cascade Diagram requires you to fit the activities together like a jigsaw from the diagram above in the most efficient way possible (they can move within their floats).

Total length of all activities = 41

Time = 17

41/17 = 2.412 – therefore minimum 3 workers required to complete within time.

The most useful way of presenting a Cascade Diagram requires you to fit the activities together like a jigsaw from the diagram above in the most efficient way possible (they can move within their floats).

This way we can also see that there needs to be a minimum of 3 workers.