{
  "_type": "curated_open_data",
  "as_of": "2026-07",
  "links": {
    "canonical": "https://vermarco.com",
    "docs_for_llms": "https://vermarco.com/llms.txt",
    "sell_your_own": "https://vermarco.com/api/marketplace/listings",
    "vertical_listings": "https://vermarco.com/api/marketplace/listings?vertical=construction-blueprints"
  },
  "records": [
    {
      "unit": "inches",
      "value": "22 by 34",
      "metric": "ANSI D drawing sheet size",
      "period": "current",
      "source": "ANSI/ASME Y14.1"
    },
    {
      "unit": "inches",
      "value": "34 by 44",
      "metric": "ANSI E drawing sheet size",
      "period": "current",
      "source": "ANSI/ASME Y14.1"
    },
    {
      "unit": "inches",
      "value": "24 by 36",
      "metric": "Architectural D sheet size",
      "period": "current",
      "source": "architectural convention"
    },
    {
      "unit": "inches",
      "value": "36 by 48",
      "metric": "Architectural E sheet size",
      "period": "current",
      "source": "architectural convention"
    },
    {
      "unit": "millimeters",
      "value": "841 by 1189",
      "metric": "ISO A0 sheet size",
      "period": "current",
      "source": "ISO 216"
    },
    {
      "unit": "millimeters",
      "value": "594 by 841",
      "metric": "ISO A1 sheet size",
      "period": "current",
      "source": "ISO 216"
    },
    {
      "unit": "scale ratio",
      "value": "1/4 inch equals 1 foot (1:48)",
      "metric": "Common floor plan drawing scale",
      "period": "current",
      "source": "architectural convention"
    },
    {
      "unit": "scale ratio",
      "value": "1 inch equals 20 feet",
      "metric": "Common site plan drawing scale",
      "period": "current",
      "source": "civil convention"
    },
    {
      "unit": "height",
      "value": "7 feet (84 inches)",
      "metric": "Minimum ceiling height, habitable rooms",
      "period": "2021 IRC",
      "source": "IRC R305"
    },
    {
      "unit": "inches",
      "value": "10",
      "metric": "Minimum stair tread depth",
      "period": "2021 IRC",
      "source": "IRC R311"
    },
    {
      "unit": "inches",
      "value": "7.75",
      "metric": "Maximum stair riser height",
      "period": "2021 IRC",
      "source": "IRC R311"
    },
    {
      "unit": "inches",
      "value": "36",
      "metric": "Minimum hallway width",
      "period": "2021 IRC",
      "source": "IRC R311"
    },
    {
      "unit": "height",
      "value": "6 feet 8 inches (80 inches)",
      "metric": "Standard residential door height",
      "period": "current",
      "source": "residential convention"
    }
  ],
  "sources": [
    {
      "url": "https://www.iso.org/standard/36631.html",
      "name": "ISO 216 paper sizes"
    },
    {
      "url": "https://codes.iccsafe.org/content/IRC2021P1",
      "name": "International Residential Code"
    },
    {
      "url": "https://www.asme.org/codes-standards",
      "name": "ASME Y14.1 drawing sheet standards"
    }
  ],
  "category": "benchmarks",
  "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": {
    "unit": "Unit of measurement",
    "value": "Published dimension or value",
    "metric": "Name of the standard value",
    "period": "Edition or applicability",
    "source": "Standard or code reference"
  },
  "buyer_use_cases": [
    "Standardize sheet sizes and title-block layouts across a drawing set",
    "Verify minimum code dimensions during design review",
    "Convert between imperial and metric sheet formats for a project"
  ]
}