Construction Products, Windows, Doors & Fenestration worked example

Frame Scrap Rate at 1.8% target frame scrap rate: a worked example

This worked example runs the frame scrap rate numbers for a tougher week than the baseline: 1.8% target frame scrap rate instead of the typical 2.5%. Calculate frame scrap rate from scrapped frame members versus total frame members produced or issued.

The inputs for this scenario

  • scrapped frame or sash members: 86 members (held at the documented default)
  • total frame or sash members produced: 2,860 members (held at the documented default)
  • target frame scrap rate: 1.8 % (the input this scenario stresses; the baseline uses 2.5)

Working through the calculation

  • The calculation starts from the formula this tool documents: Frame scrap rate = scrapped frame or sash members ÷ total frame or sash members produced × 100.
  • frame scrap rate works out to 3.01 % at these inputs, and this is the headline figure for the scenario.
  • frame scrap gap to target works out to -1.21 points at these inputs.
  • scrapped frame or sash members works out to 86 count at these inputs.
  • total frame or sash members produced works out to 2,860 count at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where target frame scrap rate sits at 2.5% and the headline result is 3.01 %, this scenario lands almost exactly on the baseline at 3.01 %.
  • Use it for daily or shift scrap reporting, comparing lines or cells, and tracking the impact of process improvements against a scrap target. 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

  • frame scrap rate: 3.01 % (headline result)
  • frame scrap gap to target: -1.21 points
  • scrapped frame or sash members: 86 count
  • total frame or sash members produced: 2,860 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Frame Scrap Rate calculator, set target frame scrap rate to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.