Advanced Planning, Scheduling & APS worked example

Material-Constrained Schedule with scheduled material draw rate of 190 units/hr: a worked example

Suppose scheduled material draw rate falls to 190 units/hr. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate material demand and cost for a scheduled run from planned consumption rate, run duration, and material cost.

The inputs for this scenario

  • Scheduled material draw rate: 190 units/hr (the input this scenario stresses; the baseline uses 380)
  • Planned production runtime: 9.5 hr (held at the documented default)
  • Material cost per unit: 2.85 $ / unit (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Material required for schedule = scheduled material draw rate × planned production runtime.
  • Material required for schedule works out to 1,805 material units at these inputs, and this is the headline figure for the scenario.
  • Scheduled material cost works out to 5,144 $ at these inputs.
  • Planned production runtime works out to 9.5 hr at these inputs.
  • Material cost per unit works out to 2.85 $ / unit at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where scheduled material draw rate sits at 380 units/hr and the headline result is 3,610 material units, this scenario comes in 50% below the baseline at 1,805 material units.
  • It computes the total material units a planned run will consume and the dollar value of that material draw. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Material required for schedule: 1,805 material units (headline result)
  • Scheduled material cost: 5,144 $
  • Planned production runtime: 9.5 hr
  • Material cost per unit: 2.85 $ / unit

Run it with your numbers

  • To rerun this with your own numbers, open the live Material-Constrained Schedule calculator, set scheduled material draw rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.