Which type of maintenance involves work that is planned and scheduled for completion?

The type of maintenance that involves work planned and scheduled for completion is indeed scheduled maintenance. This approach is essential in building maintenance as it allows for routine tasks to be carried out at predetermined intervals. This proactive strategy aims to prevent unexpected breakdowns or failures by addressing potential issues before they escalate.

Scheduled maintenance often includes tasks such as regular inspections, servicing equipment, and making necessary adjustments that can enhance performance and extend the lifespan of building systems. This method is not only efficient but also cost-effective, as it helps to mitigate the risks associated with unscheduled repairs and disruptions.

In contrast, the other types of maintenance, such as corrective, emergency, and reactive, are typically not planned in advance and usually arise due to unexpected failures or issues needing immediate attention, thus lacking the structured approach that scheduled maintenance embodies.