Firewood / Cord Calculator mechanism

Model scope

The formula is standard and arithmetically correct. Review is required only because the input units and conversion behavior are unspecified. The honest label should say 'stacked firewood volume in cords' and should not imply solid-wood volume.

No additional formula finding is recorded.

Units and conventions

• The formula is correct when stack length, width, and height are all measured in feet: 1 cord = 128 cubic feet of stacked volume.
• The exact ambiguity is whether the instrument accepts feet only or accepts other units and converts them to feet; the input specification does not say.
• The result represents stacked volume, including normal air gaps between pieces, not the solid-wood volume.

Inspectable vector

One of 4 source-bound review vectors:

{
  "inputs": {
    "L_ft": 8,
    "W_ft": 4,
    "H_ft": 4
  },
  "expected_outputs": {
    "cords": 1
  },
  "working": "Volume = 8 ft × 4 ft × 4 ft = 128 ft³. Cords = 128 ÷ 128 = 1 cord."
}

Failure boundary

BREAK_CLAIMED · SELF_FLAGGED

Very large finite-looking inputs overflow JavaScript arithmetic and produce Infinity rather than a finite cord value. Negative dimensions also produce a negative result unless physical-input validation rejects them.

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche5/tranche5-results.json
• BOUNDARY_HAZARD_CATALOG.json