Bulk Solids, Mining, Aggregates & Material Processing worked example

Belt Load at 8.64% run-time allowance for slowdowns: a worked example

This worked example runs the belt load numbers for a tougher week than the baseline: 8.64% run-time allowance for slowdowns instead of the typical 12%. Estimate belt load for belt load for bulk solids, mining, aggregates, and material processing using plant-floor material, production, quality, capacity, or cost inputs.

The inputs for this scenario

  • Tonnage to convey: 1,200 tons (held at the documented default)
  • Belt sustained haulage rate: 150 tons / hr (held at the documented default)
  • Run-time allowance for slowdowns: 8.64 % (the input this scenario stresses; the baseline uses 12)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base belt load = belt load workload รท belt load completion rate.
  • Belt Load works out to 8.69 hr at these inputs, and this is the headline figure for the scenario.
  • Base belt load works out to 8 hr at these inputs.
  • Belt Load allowance works out to 8.64 % at these inputs.
  • Belt Load completion rate works out to 150 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where run-time allowance for slowdowns sits at 12% and the headline result is 8.96 hr, this scenario comes in 3% below the baseline at 8.69 hr.
  • Use it to plan how long a defined tonnage will tie up a belt, or to check whether a transfer fits inside an available time window. 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

  • Belt Load: 8.69 hr (headline result)
  • Base belt load: 8 hr
  • Belt Load allowance: 8.64 %
  • Belt Load completion rate: 150 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Belt Load calculator, set run-time allowance for slowdowns to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.