Stone, Countertops & Engineered Surfaces worked example

Stone Waste Cost at 22% offcut and yield loss: a worked example

This worked example runs the stone waste cost numbers for a tougher week than the baseline: 22% offcut and yield loss instead of the typical 30%. Estimates the dollar cost of stone material wasted as offcuts and kerf, plus disposal, across a countertop fabrication job.

The inputs for this scenario

  • Square feet of slab purchased: 320 sqft (held at the documented default)
  • Slab material cost per square foot: 22 $/sqft (held at the documented default)
  • Offcut and yield loss: 22 % (the input this scenario stresses; the baseline uses 30)
  • Slab disposal and dump fee: 150 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Stone waste $ = sqft purchased x slab cost per sqft x yield loss% + disposal fee.
  • Total stone waste cost works out to 1,699 $ at these inputs, and this is the headline figure for the scenario.
  • Stone waste cost per unit works out to 5.31 $ / piece at these inputs.
  • Variable stone waste cost works out to 1,549 $ at these inputs.
  • Fixed stone waste cost adder works out to 150 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where offcut and yield loss sits at 30% and the headline result is 2,262 $, this scenario comes in 24.9% below the baseline at 1,699 $.
  • Use it when quoting slab-heavy jobs, comparing suppliers, or deciding whether a nesting/CAD layout change is worth it. 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 stone waste cost: 1,699 $ (headline result)
  • Stone waste cost per unit: 5.31 $ / piece
  • Variable stone waste cost: 1,549 $
  • Fixed stone waste cost adder: 150 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Stone Waste Cost calculator, set offcut and yield loss to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.