The Impact of Primavera P6 Logic Gaps on Project Delays

Logic gaps in Primavera P6 are often the silent killers of construction schedules. When activities are not properly linked, the critical path becomes unreliable.

Why Logic Matters

In a perfect schedule, every activity should have a successor and a predecessor. Open ends lead to "orphaned" activities that can hide significant delays until it is too late to mitigate them.

Best Practices for Logic Audits

1. Use the Schedule Log to identify open ends.
2. Ensure every task has at least one predecessor and one successor.
3. Limit the use of hard constraints, which can artificially inflate the schedule status.

By maintaining clean logic, you ensure that your TIA (Time Impact Analysis) remains robust and defensible during commercial audits.