Manufacturing Sales Engineering, Estimating & Quoting Operations worked example

Engineering Review Burden at 12% interruption and clarification allowance: a worked example

Push interruption and clarification allowance up to 12% and the picture changes. This example computes every intermediate figure at that operating point. Use it when engineering review burden in manufacturing sales engineering, estimating and quoting operations needs a defensible run time before a quote goes out.

The inputs for this scenario

  • Drawings to review in queue: 120 units (unchanged)
  • Drawing review throughput rate: 12 units / min (unchanged)
  • Interruption and clarification allowance: 12 % (raised for this scenario; the documented default is 10)

Working through the calculation

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

How this compares with the baseline

  • Against the tool's baseline example, where interruption and clarification 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 converts a drawing review queue and a per-drawing review rate into required engineering hours, with an allowance for interruptions and setup applied on top of base time. 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 engineering review burden time: 11.2 hr (headline result)
  • Base engineering review burden time: 10 hr
  • Engineering review burden allowance applied: 12 %
  • Engineering review burden completion rate: 12 pieces / min

Run it with your numbers

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

Last reviewed 2026-05-12.