Fixture, Gauge & Workholding Management worked example

Fixture Design Workload at 13% review, eco, and tryout allowance: a worked example

Suppose review, eco, and tryout allowance falls to 13%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate engineering hours required to design, review, detail, release, and support fixtures, gauges, jigs, nests, or workholding.

The inputs for this scenario

  • Fixture designs or revisions: 26 designs (held at the documented default)
  • Completed designs per engineering hour: 1.5 designs / hr (held at the documented default)
  • Review, ECO, and tryout allowance: 13 % (the input this scenario stresses; the baseline uses 18)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base fixture design workload time = fixture designs or revisions รท completed designs per engineering hour.
  • Required fixture design workload time works out to 19.59 hr at these inputs, and this is the headline figure for the scenario.
  • Base fixture design workload time works out to 17.33 hr at these inputs.
  • Review, ECO, and tryout allowance works out to 13 % at these inputs.
  • Completed designs per engineering hour works out to 1.5 designs / hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where review, eco, and tryout allowance sits at 18% and the headline result is 20.45 hr, this scenario comes in 4.24% below the baseline at 19.59 hr.
  • It divides the number of fixture designs or revisions by the completed-designs-per-hour rate to get base hours, then inflates that by a review, ECO and tryout allowance to give the required design workload. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Required fixture design workload time: 19.59 hr (headline result)
  • Base fixture design workload time: 17.33 hr
  • Review, ECO, and tryout allowance: 13 %
  • Completed designs per engineering hour: 1.5 designs / hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Fixture Design Workload calculator, set review, eco, and tryout allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.