Advanced Planning, Scheduling & APS worked example

Finite Capacity Load at 63% work-center availability: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop work-center availability to 63%, then walk the calculation through step by step. Compare finite work-center capacity against scheduled operations using run hours, available scheduling buckets, uptime, and yield assumptions.

The inputs for this scenario

  • Available hours per scheduling bucket: 16 hr/bucket (held at the documented default)
  • Number of finite scheduling buckets: 10 buckets (held at the documented default)
  • Work-center availability: 63 % (the input this scenario stresses; the baseline uses 88)
  • Schedulable efficiency factor: 92 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Calendar capacity before constraints = available hours per bucket × finite scheduling buckets.
  • Usable finite capacity works out to 92.74 capacity hr at these inputs, and this is the headline figure for the scenario.
  • Calendar capacity before constraints works out to 160 capacity hr at these inputs.
  • Availability capacity loss works out to 59.2 capacity hr at these inputs.
  • Efficiency capacity loss works out to 8.06 capacity hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where work-center availability sits at 88% and the headline result is 130 capacity hr, this scenario comes in 28.41% below the baseline at 92.74 capacity hr.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to work-center availability, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes availability and efficiency are stable across all buckets; a single major breakdown or a product mix shift can move the real number well outside the calculated figure.

Results at a glance

  • Usable finite capacity: 92.74 capacity hr (headline result)
  • Calendar capacity before constraints: 160 capacity hr
  • Availability capacity loss: 59.2 capacity hr
  • Efficiency capacity loss: 8.06 capacity hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Finite Capacity Load calculator, set work-center availability to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.