A superintendent is using a Gantt chart to manage a large commercial fit-out. The flooring installation task has been delayed by 3 working days due to unforeseen subfloor repairs. The painting task is scheduled to start immediately after flooring is complete. If painting was originally scheduled to take 5 working days, and the overall project completion date cannot be shifted, what is the most likely impact on the project schedule?

Question: A superintendent is using a Gantt chart to manage a large commercial fit-out. The flooring installation task has been delayed by 3 working days due to unforeseen subfloor repairs. The painting task is scheduled to start immediately after flooring is complete. If painting was originally scheduled to take 5 working days, and the overall project completion date cannot be shifted, what is the most likely impact on the project schedule?

Answer options:

• The painting task will take longer, increasing its duration to 8 working days.
• The painting task will need to be re-scheduled to finish 3 days earlier than planned, assuming no float.
• Other tasks on non-critical paths will need to be accelerated to compensate. ✅ The overall project completion date will be delayed by 3 working days unless there is float in the critical path somewhere after flooring.

Correct answer: The overall project completion date will be delayed by 3 working days unless there is float in the critical path somewhere after flooring.

Explanation: If flooring is delayed and painting is directly dependent on it without any float, then the overall project completion date will be delayed by the same amount as the flooring delay (3 working days), unless there is enough float in subsequent tasks on the critical path to absorb this delay. The painting task itself will still take 5 days, it just starts later. Accelerating non-critical path tasks would not help if painting is on the critical path.