Elevators, Escalators & Vertical Transport Equipment worked example

Vertical Transport Rework Rate at 2.16% target maximum rework rate: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop target maximum rework rate to 2.16%, then walk the calculation through step by step. Measure rework rate for elevator, escalator, moving walkway, or modernization equipment against a target.

The inputs for this scenario

  • Units or tasks requiring rework: 7 units (held at the documented default)
  • Total units or tasks inspected: 160 units (held at the documented default)
  • Target maximum rework rate: 2.16 % (the input this scenario stresses; the baseline uses 3)

Working through the calculation

  • The calculation starts from the formula this tool documents: Vertical transport rework rate = units or tasks requiring rework ÷ total units or tasks inspected.
  • Vertical transport rework rate works out to 4.38 % at these inputs, and this is the headline figure for the scenario.
  • Rework-rate gap to target works out to -2.21 points at these inputs.
  • Units or tasks requiring rework works out to 7 units at these inputs.
  • Total units or tasks inspected works out to 160 units at these inputs.

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 %.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to target maximum rework rate, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. 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: -2.21 points
  • Units or tasks requiring rework: 7 units
  • Total units or tasks inspected: 160 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Vertical Transport Rework Rate calculator, set target maximum rework rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.