Checking an unexpected result
What to do when a result does not look right
Pause before using an unexpected result for ordering, lifting, transport, or approval. Most discrepancies can be traced by checking the unit system, shape, dimensions, quantity, density, and comparison basis in order.
Recheck the inputs before making a final decision
- Confirm that every dimension uses the unit shown beside its field.
- For hollow sections, use actual outside dimensions and wall thickness rather than nominal size alone.
- Confirm quantity, decimal placement, and whether the comparison is per piece, per length, or total.
- Compare the selected density with the grade, alloy, condition, and source required for the job.
- Use a measured or project-approved value when theoretical weight is not the controlling basis.
Information that can change a result
A correction may involve a geometry formula, unit conversion, density value, material applicability, example input, result label, or explanation. Related examples and pages must be checked together because one change can affect more than one displayed result.
What a material change record should explain
When a published correction materially changes a result, the record should state the date, affected pages or calculations, practical effect, previous basis, revised basis, and any action a returning user should take.