Bring material alternatives, estimated quantities, and carbon-factor references into a decision brief that makes the comparison basis, data confidence, and unresolved evidence visible.

The actual workflow — connected nodes you can run to preview each step.
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Compare provisional options before specifications and quantities are developed enough for detailed assessment.

Show the team which data and assumptions are driving the apparent difference between materials.

Focus requests for declarations, quantities, transport assumptions, or scope clarification on the inputs that matter most.
Check that quantities, units, declared functions, service life, and life-cycle boundaries are comparable. A lower factor is not meaningful when the options represent different scopes or performance.
Record whether a factor comes from a product declaration, regional database, industry average, or provisional reference. Data specificity and age can materially affect the confidence of the comparison.
Treat the brief as decision support, not a certified life-cycle assessment. Final conclusions require verified quantities, suitable datasets, consistent methodology, and qualified professional review.
Compare options on a transparent basis and identify the data that must improve before the decision advances.