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Validation of the peer-reviewed whole-building LCA of the built NEST UMAR circular-housing unit, reconstructing its material-passport and circularity logic and mapping the published performance to a 2026 Swiss KBOB/SIA reassessment workflow, while documenting the public-data limits that prevent a defensible absolute carbon recalculation.
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Design-stage LCA and LCC of a timber-led art gallery in Oulu using Finnish national construction-emissions data and verified product EPDs: A1-A3 hotspots, separated architectural and procurement decarbonisation effects, Monte Carlo uncertainty, budgetary life cycle cost and Finnish climate-declaration readiness with explicit claim controls.
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A century-old courtyard house of handmade clay brick, stone and timber, modelled in Revit and assessed twice in One Click LCA: once as built, once with the same geometry rebuilt in concrete block, ready-mix concrete and steel. Over sixty years the vernacular house emits 963 t CO2e against 1,372, and costs 123,964 dollars against 268,609. The difference is not the shape of the building. It is what the building is made of.
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