Elevators, Escalators & Vertical Transport Equipment worked example

Inspection Checklist Time at 23% documentation, retest, and witness allowance: a worked example

Push documentation, retest, and witness allowance up to 23% and the picture changes. This example computes every intermediate figure at that operating point. a quality engineer or field manager needs to plan inspection and turnover hours

The inputs for this scenario

  • Inspection checklist line items: 185 checks (unchanged)
  • Checklist completion pace: 32 checks / hr (unchanged)
  • Documentation, retest, and witness allowance: 23 % (raised for this scenario; the documented default is 20)

Working through the calculation

  • Applying the documented formula (Base checklist time = inspection checklist items รท checklist completion pace) to the inputs above produces each figure below.
  • At this operating point the engine returns 7.11 hr for estimated inspection checklist time, the number this scenario is built around.
  • At this operating point the engine returns 5.78 hr for base checklist time.
  • At this operating point the engine returns 23 % for documentation and retest allowance.
  • At this operating point the engine returns 32 checks / hr for checklist completion pace.

How this compares with the baseline

  • Against the tool's baseline example, where documentation, retest, and witness allowance sits at 20% and the headline result is 6.94 hr, this scenario comes in 2.5% above the baseline at 7.11 hr.
  • It computes total inspection labor-hours by dividing the checklist line-item count by the completion pace, then adding an allowance for documentation, retests, and witness coordination. 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

  • Estimated inspection checklist time: 7.11 hr (headline result)
  • Base checklist time: 5.78 hr
  • Documentation and retest allowance: 23 %
  • Checklist completion pace: 32 checks / hr

Run it with your numbers

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

Last reviewed 2026-05-12.