Elevators, Escalators & Vertical Transport Equipment worked example

Vertical Transport Rework Rate at 3.45% target maximum rework rate: a worked example

What does the result look like when target maximum rework rate reaches 3.45%? The full calculation is worked below with real intermediate numbers. a quality or operations manager needs to track rework on vertical transport equipment

The inputs for this scenario

  • Units or tasks requiring rework: 7 units (unchanged)
  • Total units or tasks inspected: 160 units (unchanged)
  • Target maximum rework rate: 3.45 % (raised for this scenario; the documented default is 3)

Working through the calculation

  • Applying the documented formula (Vertical transport rework rate = units or tasks requiring rework ÷ total units or tasks inspected) to the inputs above produces each figure below.
  • At this operating point the engine returns 4.38 % for vertical transport rework rate, the number this scenario is built around.
  • At this operating point the engine returns -0.92 points for rework-rate gap to target.
  • At this operating point the engine returns 7 units for units or tasks requiring rework.
  • At this operating point the engine returns 160 units for total units or tasks inspected.

How this compares with the baseline

  • Against the tool's baseline example, where target maximum rework rate sits at 3% and the headline result is 4.38 %, this scenario lands almost exactly on the baseline at 4.38 %.
  • A figure at this level is achievable when target maximum rework rate is genuinely sustained, not just peaked for a shift. It treats every reworked unit as equal weight, so it won't distinguish a trivial fixture re-terminate from a safety-circuit failure that grounds the car — pair it with a severity breakdown for high-stakes defects.

Results at a glance

  • Vertical transport rework rate: 4.38 % (headline result)
  • Rework-rate gap to target: -0.92 points
  • Units or tasks requiring rework: 7 units
  • Total units or tasks inspected: 160 units

Run it with your numbers

  • Every input above is editable in the live Vertical Transport Rework Rate calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.