Bulk Solids, Mining, Aggregates & Material Processing worked example

Screen Deck Utilization at 68% target screen deck utilization: a worked example

This worked example runs the screen deck utilization numbers for a tougher week than the baseline: 68% target screen deck utilization instead of the typical 95%. Estimate screen deck utilization for screen deck utilization for bulk solids, mining, aggregates, and material processing using plant-floor material, production, quality, capacity, or cost inputs.

The inputs for this scenario

  • Saleable on-spec product tonnage from this deck: 850 tons (held at the documented default)
  • Total feed tonnage onto the screen deck: 1,000 tons (held at the documented default)
  • Target screen deck utilization: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Screen Deck Utilization = screen deck utilization accepted or affected material ÷ total screen feed, oversize, undersize, fines, or saleable aggregate in same period × 100.
  • Screen Deck Utilization works out to 85 % at these inputs, and this is the headline figure for the scenario.
  • Screen Deck Utilization gap to target works out to -17 points at these inputs.
  • Screen Deck Utilization accepted or affected material works out to 850 count at these inputs.
  • Total screen feed, oversize, undersize, fines, or saleable aggregate in same period works out to 1,000 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target screen deck utilization sits at 95% and the headline result is 85 %, this scenario lands almost exactly on the baseline at 85 %.
  • Use it during commissioning, after a media change, or whenever product gradation or carryover suggests a deck is underperforming. 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

  • Screen Deck Utilization: 85 % (headline result)
  • Screen Deck Utilization gap to target: -17 points
  • Screen Deck Utilization accepted or affected material: 850 count
  • Total screen feed, oversize, undersize, fines, or saleable aggregate in same period: 1,000 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Screen Deck Utilization calculator, set target screen deck utilization to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.