Advanced Planning, Scheduling & APS worked example

Material-Constrained Schedule with scheduled material draw rate of 950 units/hr: a worked example

Push scheduled material draw rate up to 950 units/hr and the picture changes. This example computes every intermediate figure at that operating point. a materials manager needs to check whether available material can support the scheduled run

The inputs for this scenario

  • Scheduled material draw rate: 950 units/hr (raised for this scenario; the documented default is 380)
  • Planned production runtime: 9.5 hr (unchanged)
  • Material cost per unit: 2.85 $ / unit (unchanged)

Working through the calculation

  • Applying the documented formula (Material required for schedule = scheduled material draw rate × planned production runtime) to the inputs above produces each figure below.
  • At this operating point the engine returns 9,025 material units for material required for schedule, the number this scenario is built around.
  • At this operating point the engine returns 25,721 $ for scheduled material cost.
  • At this operating point the engine returns 9.5 hr for planned production runtime.
  • At this operating point the engine returns 2.85 $ / unit for material cost per unit.

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 150% above the baseline at 9,025 material units.
  • It computes the total material units a planned run will consume and the dollar value of that material draw. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Material required for schedule: 9,025 material units (headline result)
  • Scheduled material cost: 25,721 $
  • Planned production runtime: 9.5 hr
  • Material cost per unit: 2.85 $ / unit

Run it with your numbers

  • Every input above is editable in the live Material-Constrained Schedule calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.