Earliest start time:
Earliest finish time:


Latest finish time:
Latest start time:


Total float:

Practise solving pert/cpm networks

The diagram above shows a randomly-generated pert/cpm network. Click on any of the nodes to set values for the earliest or latest start or total floats.

You can create a new problem by pressing your browser’s refresh button. If you want to see how these networks are drawn, try the activity-on-node web page. If you want to see how Gantt charts are drawn, try the Gantt chart page.

If this page doesn’t work properly in your web browser, try this web page, which has a java version of a similar problem.