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Material — Copper evidence record

albedo0.45
emissivity0.94
thermal_conductivity200
specific_heat418
materialsIntegrated Environmental Solutions Limited 2011

Parameters

Names follow the SUEWS YAML specification; click one for its definition in the configuration reference.

Labelled fields override the record-level citation or scope; unlabelled fields use the record metadata.

albedo0.45 unreferenced
emissivity0.94 unreferenced
thermal_conductivity200
specific_heat418
density8900

Provenance evidence

Awaiting sign-off

Published value · assessed by provenance-audit · 2026-08-26. Agent assessment is evidence preparation, not human verification.

Apache-Tables User Guide: IES Virtual Environment 6.4Parameter source

Applies to: parameters.thermal_conductivity, parameters.specific_heat, parameters.density

Where: Table 6, Copper row, p. 17

Publishes thermal conductivity 200 W m-1 K-1, specific heat 418 J kg-1 K-1 and density 8900 kg m-3. The table does not publish albedo or emissivity.

Derivation of an urban materials spectral library through emittance and reflectance spectroscopyValidation

Applies to: parameters.albedo, parameters.emissivity

Where: Table C.1, sample Z004, p. 210

Prints the numerical pair 0.45/0.94 for Metal painted, described as Metal with paint and colour Copper patina. It does not identify the substrate as bulk copper and therefore validates an identity mismatch rather than serving as parameter provenance for this record.

SUEWS database pre-migration workbook: database.xlsxLater compilation

Where: Pre-migration Spartacus Material row 36248171

Stores the same complete tuple under Ref 99240099, whose registry entry says Missing, reference. This establishes release and migration lineage only.

Assessment findings

Namesupported
The IES table and historical catalogue identify bulk Copper; the Kotthaus sample is explicitly painted metal with a copper-patina colour and is not used to define the material identity.
Targetsupported
Both sources describe thermophysical material properties used by a building-energy model.
Valuessupported
IES Table 6 publishes the exact thermal tuple 200/418/8900. The optical pair 0.45/0.94 is retained from the migrated row only and is explicitly exported as unreferenced and assumed; its numerical match to a painted Kotthaus sample is not treated as bulk-copper evidence.
Sourcesupported
IES is the effective source only for thermal conductivity, specific heat and density. Field-level metadata prevents that citation or the identity-mismatched Kotthaus sample from being extended to the stored optical pair.
issue #272
Placenot applicable
The generic material row makes no observation-place claim.
Representativenessnot applicable
The generic material row makes no site, city or regional evidence-reach claim.
Methodsupported
Literature applies to the three IES-supported thermal leaves. Canonical overrides mark both optical leaves as assumed.
Identitysupported
Legacy ID 36248171 identifies the retained catalogue row. Correcting field-level provenance does not change the stable path, values or bulk-copper identity, and does not relabel it as painted metal.

Scientific note

This correction uses field-level provenance to retain all recoverable evidence without composing two physically different material identities. Matching numbers alone do not authorise joining bulk-copper thermal properties to a painted-metal optical sample. The two optical values therefore remain explicit unreferenced assumptions. No parameter value or stable identity changes.

Model-ready fragment

Paste under material in a SUEWS YAML configuration; every value carries its citation.

albedo:
  value: 0.45
  ref:
    ID: unreferenced
    DOI: null
    desc: null
emissivity:
  value: 0.94
  ref:
    ID: unreferenced
    DOI: null
    desc: null
thermal_conductivity:
  value: 200
  ref:
    ID: ies2011-apache-tables
    DOI: null
    desc: null
specific_heat:
  value: 418
  ref:
    ID: ies2011-apache-tables
    DOI: null
    desc: null
density:
  value: 8900
  ref:
    ID: ies2011-apache-tables
    DOI: null
    desc: null

Evidence review

Awaiting sign-offSign off evidence on GitHub

Raises a prefilled sign-off issue. CI accepts it only when the issue author is in the verifier registry and the evidence revision is still current.

Review procedure

Record metadata

Targetmaterial
Schema2026.5 · legacy row 36248171
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