Which of the following is NOT an input you must know when calculating belt run time (BRT)?

When calculating Belt Run Time (BRT), understanding the required inputs is crucial for accurate calculations. Shift Duration, Average Load Time, and Sort Speed are essential factors that directly influence how long the belt will need to run to process items efficiently.

Shift Duration is important because it defines the overall time available for operations during which the belt will need to run. Average Load Time affects how quickly items can be placed onto the belt, impacting its overall throughput. Sort Speed, which refers to how fast items can be sorted on the belt, also directly affects the efficiency and duration of operations.

On the other hand, Volume Planned doesn't directly correlate with BRT calculations. While it's important in a broader operational context, it doesn’t provide specific information necessary for calculating how long the belt needs to run based on the time-related metrics like sort speed, load time, and operational shifts. Therefore, knowing the Volume Planned is not necessary for determining the belt run time.