SUEWS parameter database

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Material — Clay Tile evidence record

albedo0.2
emissivity0.9
thermal_conductivity0.84
specific_heat800
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.

albedo0.2 unreferenced
emissivity0.9 unreferenced
thermal_conductivity0.84
specific_heat800
density1900

Provenance evidence

Awaiting sign-off

Published value · assessed by provenance-audit · 2026-08-25. 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, Clay Tile row, p. 19

Publishes thermal conductivity 0.840 W m-1 K-1, specific heat 800 J kg-1 K-1 and density 1900 kg m-3. The table does not publish albedo or emissivity.

SUEWS database pre-migration workbook: database.xlsxLater compilation

Where: Pre-migration Spartacus Material row 36248178

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 both identify the material as Clay Tile.
Targetsupported
Both sources describe thermophysical material properties used by a building-energy model.
Valuessupported
IES Table 6 publishes the exact thermal tuple 0.84/800/1900. The optical pair 0.20/0.90 is retained from the migrated row only and is explicitly exported as unreferenced and assumed.
Sourcesupported
IES is the effective source only for thermal conductivity, specific heat and density. Field-level metadata prevents that citation from being extended to the unsupported albedo and emissivity.
issue #269
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 36248178 identifies the retained catalogue row. Correcting field-level provenance does not change the stable path, values or clay-tile identity.

Scientific note

This correction uses field-level provenance to represent the evidence boundary rather than treating a missing optical citation as a blocker for the supported thermal tuple. No checked source states albedo 0.20 and emissivity 0.90 together for the same clay-tile row, so those two values 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: 0.2
  ref:
    ID: unreferenced
    DOI: null
    desc: null
emissivity:
  value: 0.9
  ref:
    ID: unreferenced
    DOI: null
    desc: null
thermal_conductivity:
  value: 0.84
  ref:
    ID: ies2011-apache-tables
    DOI: null
    desc: null
specific_heat:
  value: 800
  ref:
    ID: ies2011-apache-tables
    DOI: null
    desc: null
density:
  value: 1900
  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 36248178
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