{
  "_type": "curated_open_data",
  "as_of": "2026-07",
  "links": {
    "canonical": "https://verticalmarketplace.ai",
    "docs_for_llms": "https://verticalmarketplace.ai/llms.txt",
    "sell_your_own": "https://verticalmarketplace.ai/api/marketplace/listings",
    "vertical_listings": "https://verticalmarketplace.ai/api/marketplace/listings?vertical=construction-blueprints"
  },
  "records": [
    {
      "term": "Floor plan",
      "category": "drawing type",
      "reference": "National CAD Standard",
      "definition": "Horizontal cut view showing the layout of a building level"
    },
    {
      "term": "Elevation",
      "category": "drawing type",
      "reference": "National CAD Standard",
      "definition": "Orthographic view of a vertical face of a building"
    },
    {
      "term": "Section",
      "category": "drawing type",
      "reference": "National CAD Standard",
      "definition": "View created by cutting vertically through a building"
    },
    {
      "term": "Detail drawing",
      "category": "drawing type",
      "reference": "National CAD Standard",
      "definition": "Enlarged view clarifying a specific assembly or component"
    },
    {
      "term": "Plan view",
      "category": "drawing type",
      "reference": "ASME Y14",
      "definition": "Top-down orthographic projection of an element"
    },
    {
      "term": "Title block",
      "category": "sheet component",
      "reference": "ASME Y14.1",
      "definition": "Bordered area holding sheet metadata and project identification"
    },
    {
      "term": "Scale",
      "category": "concept",
      "reference": "architectural convention",
      "definition": "Ratio expressing drawing size relative to actual size"
    },
    {
      "term": "Reflected ceiling plan",
      "category": "drawing type",
      "reference": "National CAD Standard",
      "definition": "Ceiling layout drawn as if reflected in a floor mirror"
    },
    {
      "term": "Datum",
      "category": "concept",
      "reference": "ASME Y14.5",
      "definition": "Reference point or line from which measurements are taken"
    },
    {
      "term": "Schedule",
      "category": "sheet component",
      "reference": "AIA",
      "definition": "Tabular list of components such as doors, windows, or finishes"
    },
    {
      "term": "Legend",
      "category": "sheet component",
      "reference": "National CAD Standard",
      "definition": "Key explaining symbols and line types used on a sheet"
    },
    {
      "term": "Callout",
      "category": "annotation",
      "reference": "National CAD Standard",
      "definition": "Marker referencing a related detail or drawing"
    },
    {
      "term": "Revision cloud",
      "category": "annotation",
      "reference": "National CAD Standard",
      "definition": "Outline marking an area that has changed since prior issue"
    }
  ],
  "sources": [
    {
      "url": "https://www.nationalcadstandard.org/",
      "name": "National CAD Standard (NIBS)"
    },
    {
      "url": "https://www.aia.org/",
      "name": "American Institute of Architects"
    }
  ],
  "category": "glossary",
  "vertical": "construction-blueprints",
  "data_note": "All records are public-domain facts compiled from the cited sources as of the asOf date. This content is authored and served by the platform itself — it is not seller data, so the marketplace's zero-storage promise about seller datasets is unaffected.",
  "record_count": 13,
  "what_this_is": "A platform-published open-data listing curated by Open Data Desk, the marketplace's in-house public-data seller. It is real free inventory: it counts in marketplace statistics and is purchasable for $0 through the normal purchase flow, which delivers this payload with an Ed25519-signed receipt.",
  "record_schema": {
    "term": "Blueprint or drawing term",
    "category": "Type of concept",
    "reference": "Where the term is standardized",
    "definition": "Plain-language meaning"
  },
  "buyer_use_cases": [
    "Onboard new drafters to standard blueprint terminology",
    "Resolve disputes over how a drawing element should be read",
    "Build consistent sheet legends and annotation standards"
  ]
}

The full dataset is delivered after purchase. Fingerprint: sha256:95520807eed4821174f45a1248e7a79bdf5c903102f741cb4fb7a9f42f3a7427

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