Constraints

Constraints are imposed start or finish dates that override normal schedule logic and float calculations (ex: “Must Finish On” or “Start No Earlier Than”).

How constraints affect the schedule:

• Overusing constraints can force the schedule into unrealistic timelines.
• It reduces flexibility, potentially causing resource bottlenecks.
• Constraints can mask underlying scheduling issues by hiding true dependencies.

Best Practices:

• Apply constraints sparingly, only when absolutely necessary (ex: regulatory deadlines, contractual milestones).
• Rely on logical relationships to drive the schedule whenever possible.
• Regularly review constraints to ensure they remain relevant and do not conflict with progress.