Wood & Paper Manufacturing worked example

Lumber Drying Time at 12% loading, ramp, and conditioning allowance: a worked example

Push loading, ramp, and conditioning allowance up to 12% and the picture changes. This example computes every intermediate figure at that operating point. Use it when lumber drying time in wood and paper manufacturing is being added to next week's schedule and you need an honest hours estimate.

The inputs for this scenario

  • Board Footage to Dry: 120 units (unchanged)
  • Kiln Throughput Rate: 12 units / min (unchanged)
  • Loading, Ramp, and Conditioning Allowance: 12 % (raised for this scenario; the documented default is 10)

Working through the calculation

  • Applying the documented formula (Base lumber drying time = lumber drying time workload รท lumber drying time completion rate) to the inputs above produces each figure below.
  • At this operating point the engine returns 11.2 hr for required lumber drying time, the number this scenario is built around.
  • At this operating point the engine returns 10 hr for base lumber drying time.
  • At this operating point the engine returns 12 % for lumber drying time allowance applied.
  • At this operating point the engine returns 12 pieces / min for lumber drying time completion rate.

How this compares with the baseline

  • Against the tool's baseline example, where loading, ramp, and conditioning allowance sits at 10% and the headline result is 11 hr, this scenario comes in 1.82% above the baseline at 11.2 hr.
  • It divides the drying workload by the kiln throughput rate to get base time, then multiplies by an allowance factor for loading, ramp, and conditioning. 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

  • Required lumber drying time: 11.2 hr (headline result)
  • Base lumber drying time: 10 hr
  • Lumber drying time allowance applied: 12 %
  • Lumber drying time completion rate: 12 pieces / min

Run it with your numbers

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

Last reviewed 2026-05-12.