AACE International Updated PSP Exam Questions and Answers by troy

Free float is a concept in Critical Path Method (CPM) scheduling that refers to the amount of time an activity's early start can be delayed without affecting the early start of any immediately succeeding activities.

Option A refers to total float, which considers early and late dates of an activity​.

Option C also points to total float.

Option D does not define free float.

Free float is critical for project planners as it provides flexibility in scheduling without impacting downstream activities​.

 Definition of a Critical Path Method (CPM) Schedule:

CPM schedules are based on network diagrams that logically link activities, showing the sequence and dependencies between them.

These schedules identify the critical path, which is the longest path through the network, determining the project's shortest possible duration.

 Evaluation of Options:

Option A: Incorrect. While CPM schedules do include tasks and timelines, the defining feature is the logical interconnection of activities.

Option B: Incorrect. CPM schedules are not limited to "risky" work; they show all activities.

Option C: Incorrect. CPM schedules use network diagrams, not just graphical representations.

Option D: Correct. The network diagram is the key characteristic of CPM schedules.

Understand the Relationship Between G and H:

The time-scaled diagram shows that Activity H starts immediately after the finish of Activity G.

This is indicative of a Finish-to-Start (FS) relationship.

Cross-Verification:

Option A: Incorrect. The relationship is visible in the diagram.

Option B: Incorrect. There is no evidence of a Start-to-Start (SS) relationship.

Option D: Incorrect. Finish-to-Finish (FF) is not applicable here.

Option C: Correct. FS relationship matches the network logic.