Wood & Paper Manufacturing worked example

Lumber Drying Time at 7.2% loading, ramp, and conditioning allowance: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop loading, ramp, and conditioning allowance to 7.2%, then walk the calculation through step by step. Estimate lumber drying time for wood and paper manufacturing using production-ready inputs so teams can plan labor hours, schedule the work, or check whether the job fits the available shift time.

The inputs for this scenario

  • Board Footage to Dry: 120 units (held at the documented default)
  • Kiln Throughput Rate: 12 units / min (held at the documented default)
  • Loading, Ramp, and Conditioning Allowance: 7.2 % (the input this scenario stresses; the baseline uses 10)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base lumber drying time = lumber drying time workload ÷ lumber drying time completion rate.
  • Required lumber drying time works out to 10.72 hr at these inputs, and this is the headline figure for the scenario.
  • Base lumber drying time works out to 10 hr at these inputs.
  • Lumber drying time allowance applied works out to 7.2 % at these inputs.
  • Lumber drying time completion rate works out to 12 pieces / min at these inputs.

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 2.55% below the baseline at 10.72 hr.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to loading, ramp, and conditioning allowance, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes a steady throughput rate and does not model species, target moisture, or thickness directly — those must be baked into the rate you enter.

Results at a glance

  • Required lumber drying time: 10.72 hr (headline result)
  • Base lumber drying time: 10 hr
  • Lumber drying time allowance applied: 7.2 %
  • Lumber drying time completion rate: 12 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Lumber Drying Time calculator, set loading, ramp, and conditioning allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.