Activities that have zero float must start on time to prevent the schedule from slipping. Critical activities can also have negative float. Negative float occurs when an imposed finish date creates a schedule that is shorter than the duration calculated to complete the activities on the critical path.

Does the critical path always have zero float?

The tasks on the critical path have zero float. You can either calculate the float using the steps above, or by using project management software. If an activity has a float greater than zero, it means it can be delayed without affecting the project completion time.

Can the critical path have total float?

And what is total float in the critical path method? The total float and slack are synonymous. The total float is the difference between project completion date and the total duration of critical path activities. In other words, you have a project to finish in 25 days.