Construction Machinery & Attachments worked example

Rework Cost at 72% rework scope included: a worked example in construction machinery & attachments

This worked example runs the rework cost numbers for a tougher week than the baseline: 72% rework scope included instead of the typical 100%. Estimate rework cost for construction attachments, weldments, hydraulics, paint, or final assembly.

The inputs for this scenario

  • Attachment rework events: 18 events (held at the documented default)
  • Average rework cost per event: 690 $ / event (held at the documented default)
  • Rework scope included: 72 % (the input this scenario stresses; the baseline uses 100)
  • Fixed containment and corrective action cost: 1,800 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable rework cost = attachment rework events × average rework cost per event × rework scope included.
  • total attachment rework cost works out to 10,742 $ at these inputs, and this is the headline figure for the scenario.
  • rework cost per event works out to 597 $ / piece at these inputs.
  • variable rework cost works out to 8,942 $ at these inputs.
  • fixed containment and corrective action cost works out to 1,800 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where rework scope included sits at 100% and the headline result is 14,220 $, this scenario comes in 24.46% below the baseline at 10,742 $.
  • Use it when quantifying the cost of a defect trend, building a cost-of-quality case, or comparing rework spend to a prevention investment. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • total attachment rework cost: 10,742 $ (headline result)
  • rework cost per event: 597 $ / piece
  • variable rework cost: 8,942 $
  • fixed containment and corrective action cost: 1,800 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Rework Cost calculator, set rework scope included to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.