What is the difference between resource leveling and resource smoothing?

What is the difference between resource leveling and resource smoothing?

• A. Leveling resolves overallocation by delaying tasks, possibly affecting end date; smoothing adjusts within float to optimize resource usage without changing the critical path.
• B. Leveling compresses the schedule; smoothing extends the critical path.
• C. Leveling increases resources; smoothing reduces resources.
• D. Leveling and smoothing both always change the project finish date.

Answer: (A)

Resource leveling focuses on resolving overallocation by delaying tasks until resources become available, even if that means the project finish date shifts. It targets feasibility under resource limits, so timing on the critical path can change as needed to satisfy the constraints. Resource smoothing, on the other hand, keeps the schedule intact by moving tasks within their available float to even out resource usage, without changing the critical path or finish date. In short, leveling fixes resource conflicts by pushing work out, potentially extending the project, while smoothing optimizes resource use without altering the project’s end date. If there’s no slack to use, smoothing can’t fix an overallocation and leveling would be required, which might slip the schedule.

Resource leveling focuses on resolving overallocation by delaying tasks until resources become available, even if that means the project finish date shifts. It targets feasibility under resource limits, so timing on the critical path can change as needed to satisfy the constraints. Resource smoothing, on the other hand, keeps the schedule intact by moving tasks within their available float to even out resource usage, without changing the critical path or finish date. In short, leveling fixes resource conflicts by pushing work out, potentially extending the project, while smoothing optimizes resource use without altering the project’s end date. If there’s no slack to use, smoothing can’t fix an overallocation and leveling would be required, which might slip the schedule.