Bulk Solids, Mining, Aggregates & Material Processing worked example

Stockpile Volume with usable stockpile inventory of 31,300 tons: a worked example

This scenario runs the stockpile volume calculation on the strong side: usable stockpile inventory of 31,300 tons, with every other input held at its documented default. a plant team is reviewing stockpile volume for bulk solids, mining, aggregates, and material processing and needs a clear stockpile volume for production, quality, capacity, maintenance, purchasing, or costing decisions

The inputs for this scenario

  • Usable stockpile inventory: 31,300 tons (raised for this scenario; the documented default is 12,500)
  • Daily stockpile draw-down: 850 tons / day (unchanged)
  • Stockpile cover safety factor: 1.2 x (unchanged)

Working through the calculation

  • Applying the documented formula (Stockpile Volume uses the entered stockpile volume for bulk solids, mining, aggregates, and material processing values on a consistent unit basis.) to the inputs above produces each figure below.
  • At this operating point the engine returns 30.69 tons for stockpile volume, the number this scenario is built around.
  • At this operating point the engine returns 36.82 days for unprotected stockpile volume.
  • At this operating point the engine returns 31,300 pieces for usable stockpile volume inventory.
  • At this operating point the engine returns 850 pieces / day for daily stockpile volume usage.

How this compares with the baseline

  • Against the tool's baseline example, where usable stockpile inventory sits at 12,500 tons and the headline result is 12.25 tons, this scenario comes in 150% above the baseline at 30.69 tons.
  • Use it for reorder and replenishment planning, contingency checks before a supply disruption, or sizing how much pile you need to ride out a delivery gap. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Stockpile Volume: 30.69 tons (headline result)
  • Unprotected stockpile volume: 36.82 days
  • Usable stockpile volume inventory: 31,300 pieces
  • Daily stockpile volume usage: 850 pieces / day

Run it with your numbers

  • Every input above is editable in the live Stockpile Volume calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.