Advanced Planning, Scheduling & APS worked example

Bottleneck Schedule Impact at 65% bottleneck-attributable share: a worked example

This worked example runs the bottleneck schedule impact numbers for a tougher week than the baseline: 65% bottleneck-attributable share instead of the typical 90%. Estimate the cost impact of bottleneck overload from constrained hours, hourly impact, bottleneck responsibility, and fixed recovery cost.

The inputs for this scenario

  • Overloaded bottleneck hours: 42 constraint hr (held at the documented default)
  • Impact per constrained hour: 210 $ / constraint hr (held at the documented default)
  • Bottleneck-attributable share: 65 % (the input this scenario stresses; the baseline uses 90)
  • Recovery setup or expedite cost: 1,200 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Constraint-attributable impact = overloaded bottleneck hours × impact per constrained hour × bottleneck-attributable share.
  • Bottleneck schedule impact works out to 6,933 $ bottleneck impact at these inputs, and this is the headline figure for the scenario.
  • Impact per constrained hour works out to 165 $ / constraint hr at these inputs.
  • Constraint-attributable impact works out to 5,733 $ bottleneck impact at these inputs.
  • Recovery setup or expedite cost works out to 1,200 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where bottleneck-attributable share sits at 90% and the headline result is 9,138 $ bottleneck impact, this scenario comes in 24.13% below the baseline at 6,933 $ bottleneck impact.
  • Use it when a constraint work center is overloaded in the schedule, when weighing offloading versus capacity additions, or when justifying constraint-buffer protection. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Bottleneck schedule impact: 6,933 $ bottleneck impact (headline result)
  • Impact per constrained hour: 165 $ / constraint hr
  • Constraint-attributable impact: 5,733 $ bottleneck impact
  • Recovery setup or expedite cost: 1,200 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Bottleneck Schedule Impact calculator, set bottleneck-attributable share to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.