{
  "category": "Dimensional Lumber",
  "vertical": "building-materials-and-lumber",
  "source": "https://getclaro.ai/resources/attribute-library/building-materials-and-lumber/dimensional-lumber/",
  "status": "editorial-draft",
  "note": "Editorial reference template. Example values show format only and do not describe a real SKU. Not an official ETIM or ECLASS class.",
  "groups": [
    {
      "key": "identity",
      "name": "Identity",
      "check": "Preserve leading zeros and punctuation, validate against the manufacturer record, and check the GTIN check digit and packaging level before linking."
    },
    {
      "key": "technical",
      "name": "Technical specifications",
      "check": "Store the number and unit separately. Convert only when the source unit and test conditions are known."
    },
    {
      "key": "selection",
      "name": "Selection attributes",
      "check": "Map supplier wording to a governed vocabulary only after checking the source text and which variant it applies to."
    },
    {
      "key": "fit",
      "name": "Fit & compatibility",
      "check": "Keep model and series qualifiers. A similar-looking part is not a verified fit until a source says so."
    },
    {
      "key": "evidence",
      "name": "Evidence & compliance",
      "check": "Link the manufacturer document or label with its edition or date. Never copy a certification from a neighboring SKU."
    }
  ],
  "fields": [
    {
      "key": "nominal_size",
      "label": "Nominal Size",
      "group": "technical",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "2x6"
    },
    {
      "key": "actual_dressed_size",
      "label": "Actual Dressed Size",
      "group": "technical",
      "priority": "core",
      "value_type": "text",
      "unit": "in",
      "example_format": "1-1/2 in x 5-1/2 in (dry, S4S)"
    },
    {
      "key": "length",
      "label": "Length",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "ft",
      "example_format": "16"
    },
    {
      "key": "species_species_group",
      "label": "Species / Species Group",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Spruce-Pine-Fir (SPF)"
    },
    {
      "key": "grade",
      "label": "Grade",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "No. 2 & Btr"
    },
    {
      "key": "grade_category_ngr_size_classification",
      "label": "Grade Category (NGR Size Classification)",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Structural Joists & Planks (2x5 and wider)"
    },
    {
      "key": "seasoning_moisture_designation",
      "label": "Seasoning / Moisture Designation",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "KD-HT (MC 19% max)"
    },
    {
      "key": "surfacing_edge_profile",
      "label": "Surfacing & Edge Profile",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "S4S, eased edges"
    },
    {
      "key": "selling_unit_of_measure",
      "label": "Selling Unit of Measure",
      "group": "identity",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "PC (piece); price basis MBF"
    },
    {
      "key": "manufacturer_part_number",
      "label": "Manufacturer Part Number",
      "group": "identity",
      "priority": "core",
      "value_type": "identifier",
      "unit": null,
      "example_format": "LBR-2616-SPF-2B"
    },
    {
      "key": "gtin_upc",
      "label": "GTIN / UPC",
      "group": "identity",
      "priority": "core",
      "value_type": "identifier",
      "unit": null,
      "example_format": "00614141320035"
    },
    {
      "key": "preservative_type",
      "label": "Preservative Type",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "MCA (micronized copper azole)"
    },
    {
      "key": "awpa_use_category",
      "label": "AWPA Use Category",
      "group": "evidence",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "UC4A (ground contact, general use)"
    },
    {
      "key": "preservative_retention",
      "label": "Preservative Retention",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "pcf",
      "example_format": "0.15"
    },
    {
      "key": "bending_design_value_fb",
      "label": "Bending Design Value (Fb)",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "psi",
      "example_format": "875"
    },
    {
      "key": "modulus_of_elasticity_e",
      "label": "Modulus of Elasticity (E)",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "psi",
      "example_format": "1400000"
    },
    {
      "key": "grading_agency_mill_number",
      "label": "Grading Agency & Mill Number",
      "group": "evidence",
      "priority": "channel",
      "value_type": "identifier",
      "unit": null,
      "example_format": "Grading agency mark / Mill 000"
    },
    {
      "key": "country_of_origin",
      "label": "Country of Origin",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Canada"
    }
  ],
  "evidence_columns": [
    "raw_value",
    "normalized_value",
    "source_uri",
    "source_page_or_row",
    "confidence",
    "review_state",
    "last_verified"
  ],
  "normalization_examples": [
    {
      "attribute": "Species / Species Group",
      "variants": [
        "SPF",
        "S-P-F",
        "Spruce Pine Fir",
        "SPRUCE/PINE/FIR",
        "S.P.F.",
        "Spruce-Pine-Fir"
      ],
      "normalized": "Spruce-Pine-Fir (SPF)"
    },
    {
      "attribute": "Grade",
      "variants": [
        "#2",
        "No.2",
        "NO 2",
        "No 2",
        "#2 Grade",
        "Number 2"
      ],
      "normalized": "No. 2"
    },
    {
      "attribute": "Seasoning / Moisture Designation",
      "variants": [
        "KDHT",
        "KD-HT",
        "KD HT",
        "Kiln Dried/Heat Treated",
        "HT-KD",
        "K.D.-H.T."
      ],
      "normalized": "KD-HT (MC 19% max)"
    }
  ]
}